阅读说明：本技术 具有通信功能的压力表及和手持终端的适配连接方法 (Pressure gauge with communication function and adaptive connection method of pressure gauge and handheld terminal ) 是由 董立军 万春辉 闫守旺 于 2021-03-10 设计创作，主要内容包括：一种具有通信功能的压力表及压力表和手持终端适配连接方法,包括：手持终端以第一获取方式从压力表获取适配连接信息,适配连接信息包括压力表的连接识别码,第一获取方式非有线连接；手持终端产生连接请求信息,并以第二交互方式向压力表发送连接请求信息,连接请求信息包括连接识别码,第二交互方式是与第一获取方式不同的无线通讯；响应于手持终端的连接请求信息,手持终端和压力表以第二交互方式建立数据通道；手持终端通过数据通道从压力表获取压力量；设计了配置于压力表的连接识别码,使手持设备可以通过这一验证确保连接对象的正确性,同时保证了压力量的信息安全。(A pressure gauge with a communication function and a pressure gauge and handheld terminal adaptive connection method comprise the following steps: the method comprises the steps that the handheld terminal obtains adaptive connection information from a pressure gauge in a first obtaining mode, the adaptive connection information comprises a connection identification code of the pressure gauge, and the first obtaining mode is in non-wired connection; the handheld terminal generates connection request information and sends the connection request information to the pressure gauge in a second interactive mode, wherein the connection request information comprises a connection identification code, and the second interactive mode is wireless communication different from the first acquisition mode; responding to the connection request information of the handheld terminal, and establishing a data channel by the handheld terminal and the pressure gauge in a second interaction mode; the handheld terminal obtains the pressure from the pressure gauge through the data channel; the connection identification code configured on the pressure gauge is designed, so that the handheld device can ensure the correctness of a connection object through the verification, and meanwhile, the information safety of the pressure is ensured.)

1. A pressure gauge with a communication function, comprising:

a watch case;

the pressure guide pipe is connected with the watchcase and used for guiding a fluid medium;

a pressure detection unit configured to detect a pressure of the fluid medium and convert the pressure into an electrical variable, thereby obtaining a pressure amount of the fluid medium;

the touch display screen is arranged on one outer surface of the watch case and displays the pressure quantity and receives an operation instruction input by a user through touch;

a wireless communication unit configured to wirelessly transmit and receive data;

a control section configured to:

receiving a connection request sent by a handheld terminal through the wireless communication part, wherein the connection request comprises a connection identification code, and the connection identification code is obtained by the handheld terminal from the pressure gauge in a non-wired connection mode;

and verifying the connection identification code, establishing wireless communication connection with the handheld terminal after the connection identification code passes verification, and transmitting the pressure to the handheld terminal through the wireless communication part.

2. The pressure gauge according to claim 1, wherein said transmitting the pressure amount to the handheld terminal through the wireless communication part comprises:

and receiving a data transmission rule transmitted from the hand-held terminal through the wireless communication unit, and transmitting the pressure amount according to the data transmission rule.

3. The pressure gauge according to claim 2, wherein said transmitting said amount of pressure according to said data transmission rule comprises:

when the data sending rule is real-time sending, the pressure gauge sends the pressure amount to the handheld terminal in real time through the wireless communication part;

or when the data transmission rule is interval transmission, the pressure gauge transmits the pressure amount to the handheld terminal block at intervals of a set time length through the wireless communication part;

or, when the data transmission rule is transmitted according to a request, the pressure gauge transmits the pressure amount to the communication module through the wireless communication part after receiving a transmission request transmitted by the handheld terminal.

4. The pressure gauge according to claim 1 or 2, wherein the control portion is further configured to:

correspondingly storing the pressure amount and the acquisition time of the pressure amount;

and transmitting the pressure amount and the acquisition time of the pressure amount to the handheld terminal through the wireless communication part.

5. The pressure gauge according to claim 1 or 2, wherein the connection request comprises an identification code;

the control section is further configured to:

storing the identification code;

and when the pressure amount is transmitted to the handheld terminal through the wireless communication part, the identification code is sent together, so that the handheld terminal performs matching verification according to the identification code and receives the pressure amount after the verification is passed.

6. The pressure gauge according to claim 1 or 2, wherein the control portion is further configured to:

receiving an instruction for generating the connection identification code through a touch display screen, and generating the connection identification code into a two-dimensional code according to the instruction, so that the handheld terminal scans the two-dimensional code to obtain the connection identification code.

7. The pressure gauge according to claim 1 or 2, wherein the control portion is further configured to:

receiving at least one setting item sent by the handheld terminal and a setting result corresponding to the at least one setting item; the at least one setting item and a setting result corresponding to the at least one setting item are obtained by the handheld terminal from other pressure gauges different from the pressure gauge in a non-wired connection mode; the at least one setting item includes an acquisition unit of the amount of pressure;

and resetting the at least one setting item according to the setting result of the at least one setting item.

8. A method for adapting and connecting a pressure gauge and a handheld terminal comprises the following steps:

the method comprises the steps that the handheld terminal obtains adaptive connection information from a pressure gauge in a first obtaining mode, the adaptive connection information comprises a connection identification code of the pressure gauge, and the first obtaining mode is in non-wired connection;

the handheld terminal generates connection request information and sends the connection request information to the pressure gauge in a second interactive mode, wherein the connection request information comprises a connection identification code, and the second interactive mode is wireless communication different from the first acquisition mode;

responding to the connection request information of the handheld terminal, and establishing a data channel by the handheld terminal and the pressure gauge in a second interaction mode;

the handheld terminal obtains the pressure amount from the pressure gauge through the data channel.

9. The adaptive connection method according to claim 8, wherein the handheld terminal is preset with a pressure measurement model, the pressure measurement model comprises one or more measurement control parameters, and the handheld terminal obtains the pressure amount through the data channel according to the measurement control parameters.

10. The adaptive connection method according to claim 9, wherein the adaptive connection information includes metering characteristic information, the handheld device determines whether the pressure gauge conforms to the pressure metering model according to the metering characteristic information, and the handheld terminal sends the connection request information to the pressure gauge conforming to the pressure metering model.

11. An adaptive connection method according to claim 9, wherein the metering control parameter comprises a combination of one or more of a pressure type, an indication type, a significand, or an acquisition period.

12. An adaptive connection method according to claim 9, wherein the pressure measurement model comprises a pressure calibration model, and the handheld terminal sends the connection request information to a standard pressure gauge and/or a calibrated pressure gauge conforming to the pressure calibration model in a second interactive mode.

13. An adaptive connection method according to claim 9 or 12, wherein the hand-held terminal simultaneously establishes data connections with two or more pressure gauges and determines the reading objects of the pressure amounts according to the pressure metering model, at least one set of pressure amounts being obtained by the second interactive mode.

14. The adaptive connection method according to claim 13, wherein the handheld terminal sends the identification code to the pressure gauge according to the pressure metering model so that different pressure gauges correspond to different identification codes, and the handheld terminal performs matching verification on the pressure quantity according to the identification code.

15. The adapting connection method according to claim 8, wherein the first acquisition mode is image acquisition, the pressure gauge comprises a display unit capable of presenting images, and the handheld terminal comprises a camera unit capable of reading images.

16. The adaptive connection method according to claim 15, wherein the pressure gauge comprises a touch display screen having a display unit and an input unit, and the pressure gauge generates a two-dimensional code containing adaptive connection information through the touch display screen based on a touch instruction of the touch display screen.

17. The adaptive connection method according to claim 8, wherein the first acquisition mode is NFC or RFID.

Technical Field

The invention relates to the technical field of pressure measurement detection, in particular to a pressure gauge with a communication function and an adaptive connection method of the pressure gauge and a handheld terminal.

Background

The pressure gauge is widely applied to various links of industrial manufacturing as an important metering monitoring device, and in order to ensure the accuracy, stability and reliability of pressure quantity acquisition, the pressure quantity needs to be read from the pressure gauge periodically or aperiodically for checking and analyzing, and the requirement has some problems in actual operation:

in one or more scenes, when the pressure gauges are wirelessly connected, a plurality of connectable objects are found, and once an incorrect connecting object is selected, the connectable objects are difficult to find, for example, one pressure gauge is respectively arranged on a plurality of pipelines with similar pressure, and when reading and analyzing each pressure gauge, if a certain connecting object is wrongly used as another pressure gauge to be connected, the pressure can not be found even if the pressure is read (because the pressure quantities corresponding to the different pressure gauges are similar originally);

secondly, to ensure that the safety of pressure information does not leak, the external equipment is required to be prevented from being directly connected with the pressure gauge to establish data, and conversely, to ensure the rapid remote reading of pressure from the pressure gauge, the external equipment is required to be directly or almost directly connected with the pressure gauge to establish data.

In the prior art I, a wireless intelligent remote transmission pressure gauge represents the conventional scheme at present, and comprises a shell and a glass panel, wherein the shell is an open cavity, the glass panel seals the opening, a detection interface, a pointer, a machine core, a dial and a transmission mechanism are arranged in the cavity, the pointer is sleeved on the machine core and is in linkage arrangement with the machine core, the transmission mechanism is connected with the detection interface, and when pressure change is detected, deformation is generated to drive the machine core to rotate so as to realize that the pointer rotates on the dial; the wireless digital transmission device also comprises a wireless digital transmission module, a power supply and a resistance detection module, wherein the resistance detection module is linked with the transmission mechanism to change the resistance value of the resistor; the power supply is positioned on the bottom surface of the shell and provides power for the wireless data transmission module; the wireless data transmission module comprises an antenna, the wireless data transmission module changes an analog quantity signal transmitted by the resistance detection module into a digital signal and transmits the digital signal to the terminal through the antenna, and the antenna is positioned outside the shell and fixed with the shell; the scheme can certainly enable the handheld device and the pressure gauge to establish data connection, but the two problems also exist, namely when a plurality of similar pressure gauges need to be connected at the same time, the pressure gauges are difficult to distinguish, and if the data connection between the wireless data transmission module and the terminal can be directly established, the safety of pressure information is difficult to guarantee.

In the second prior art, a method, a device and terminal equipment for reading a pressure gauge in a transformer substation represent another conventional scheme at present, namely, the problem is solved by giving up communication convenience to a certain extent, the current position information of a handheld terminal of a reading person is obtained, and a shortest meter reading path is determined according to the current position information of the handheld terminal and prestored position information of each pressure gauge to be read in the transformer substation; sending the shortest meter reading path to a handheld terminal of the transcriber so that the handheld terminal displays the shortest meter reading path; acquiring meter information of each pressure meter to be copied, which is sent by the handheld terminal, and determining whether each pressure meter to be copied is normal; this solution, which abandons the direct data connection between the pressure gauge and the hand-held device, does solve the two aforementioned problems, but at the same time it causes new problems:

if the pressure information of the pressure gauge needs to be continuously checked for a period of time, it is very inconvenient because there is no direct data connection.

In summary, the prior art cannot meet the requirement of data connection between the pressure gauge and the handheld device.

Disclosure of Invention

In order to solve the problems existing in the prior art, a technical scheme aiming at quick connection of a pressure gauge is provided.

A pressure gauge with communication function, comprising:

a watch case;

the pressure guide pipe is connected with the watchcase and used for guiding a fluid medium;

the pressure detection part is configured to detect the pressure of the fluid medium introduced by the pressure guiding pipe, convert the pressure into an electric variable and obtain the pressure quantity of the fluid medium;

the touch display screen is arranged on the outer surface of the watch case and displays the pressure and receives an operation instruction input by a user through touch;

a wireless communication unit for wirelessly transmitting and receiving data;

the control part is configured to receive a connection request sent by the handheld terminal through the wireless communication part, wherein the connection request comprises a connection identification code, and the connection identification code is obtained by the handheld terminal from the pressure gauge in a non-wired connection mode;

and verifying the connection identification code, establishing wireless communication connection with the handheld terminal after the connection identification code passes verification, and transmitting the pressure to the handheld terminal through the wireless communication part.

The technical scheme of the pressure gauge with the communication function is optimized or improved, and the following scheme can be adopted:

preferably, the transmitting the pressure amount to the hand-held terminal through the wireless communication unit includes receiving a data transmission rule transmitted from the hand-held terminal through the wireless communication unit, and transmitting the pressure amount according to the data transmission rule.

Further preferably, transmitting the pressure amount according to the data transmission rule includes,

when the data transmission rule is real-time transmission, the pressure gauge transmits the pressure amount to the handheld terminal in real time through the wireless communication part,

or when the data transmission rule is interval transmission, the pressure gauge transmits the pressure amount to the handheld terminal through the wireless communication part at intervals of set duration,

or, when the data transmission rule is that the pressure gauge transmits the pressure to the communication module through the wireless communication part after receiving the transmission request transmitted by the handheld terminal.

Preferably, the control part is configured to store the pressure amount in correspondence with a collection time of the pressure amount, and transmit the pressure amount and the collection time of the pressure amount to the handheld terminal through the wireless communication part.

Preferably, the connection request includes an identification code of the handheld terminal, and the control unit is configured to store the identification code of the handheld terminal, and transmit the identification code together when the wireless communication unit transmits the pressure amount to the handheld terminal, so that the handheld terminal performs matching verification according to the identification code, and receives the pressure amount after the verification is passed.

Preferably, the control part is configured to receive an instruction for generating the connection identification code through the touch display screen, and generate the connection identification code into a two-dimensional code according to the instruction, so that the handheld terminal scans the two-dimensional code to obtain the connection identification code.

Preferably, the control part is configured to receive at least one setting item sent by the handheld terminal and a setting result corresponding to the at least one setting item; the setting result corresponding to the at least one setting item and the at least one setting item is obtained by the handheld terminal from other pressure meters different from the pressure meter in a non-wired connection mode; at least one setting item comprises an acquisition unit of the pressure amount; and resetting the at least one setting item according to the setting result of the at least one setting item.

A method for adapting and connecting a pressure gauge and a handheld terminal comprises the following steps:

the method comprises the steps that the handheld terminal obtains adaptive connection information from a pressure gauge in a first obtaining mode, the adaptive connection information comprises a connection identification code of the pressure gauge, and the first obtaining mode is in non-wired connection;

the handheld terminal generates connection request information and sends the connection request information to the pressure gauge in a second interactive mode, wherein the connection request information comprises a connection identification code, and the second interactive mode is wireless communication different from the first acquisition mode;

responding to the connection request information of the handheld terminal, and establishing a data channel by the handheld terminal and the pressure gauge in a second interaction mode;

the handheld terminal obtains the pressure amount from the pressure gauge through the data channel.

The technical scheme of the pressure gauge and the quick connection method of the handheld terminal is optimized or improved, and the following scheme can be adopted:

preferably, the handheld terminal is preset with a pressure measurement model, the pressure measurement model comprises one or more measurement control parameters, and the handheld terminal obtains the pressure amount through a data channel according to the measurement control parameters.

Further preferably, the adaptive connection information includes metering characteristic information, the handheld device judges whether the pressure gauge conforms to the pressure metering model according to the metering characteristic information, and the handheld terminal sends connection request information to the pressure gauge conforming to the pressure metering model.

Further preferably, the metering control parameter comprises a combination of one or more of a pressure type, an indication type, a significand, or an acquisition period.

Further preferably, the pressure measurement model comprises a pressure calibration model, and the handheld terminal sends connection request information to a standard pressure gauge and/or a calibrated pressure gauge conforming to the pressure measurement model in a second interaction mode.

Further preferably, the handheld terminal simultaneously establishes data connection with two or more pressure gauges, and determines a reading object of the pressure amount according to the pressure metering model, and at least one group of pressure amounts is acquired through the second interaction mode.

Further preferably, the handheld terminal sends the identification codes to the pressure gauges according to the pressure metering model, so that different pressure gauges correspond to different identification codes, and the handheld terminal performs matching verification on the pressure according to the identification codes.

Preferably, the first acquisition mode is image acquisition, the pressure gauge comprises a display unit capable of presenting images, and the handheld terminal comprises a camera unit capable of reading images.

Further preferably, the pressure gauge comprises a touch display screen with a display unit and an input unit, and based on a touch instruction of the touch display screen, the pressure gauge generates a two-dimensional code containing adaptive connection information through the touch display screen.

Preferably, the first acquisition mode is NFC or RFID.

Advantageous effects

The connection identification code configured on the pressure gauge is designed, the pressure gauge also verifies the connection identification code when verifying the connection request, and the connection identification code can be rapidly and unidirectionally acquired, so that the connection identification code is almost equivalent to direct data connection for authorized handheld equipment, the verification difficulty is not increased, but the handheld equipment can ensure the correctness of a connection object through the verification, and correspondingly, for the pressure gauge, the connection request sent by various unauthorized external objects can be blocked through the verification of the connection identification code, and the information safety of the pressure force is ensured.

Drawings

Fig. 1 is a flowchart illustrating the operation of a control unit of a pressure gauge according to an example of the present invention.

FIG. 2 is a flowchart illustrating interaction between a pressure gauge and a handheld terminal according to an exemplary embodiment of the present invention.

Fig. 3 is a flowchart illustrating interaction between a pressure gauge with pressure amount transmission rules and a handheld terminal according to an exemplary embodiment of the present invention.

Fig. 4 is a flowchart illustrating a connection request with a pressure amount transmission rule by a pressure gauge according to an example of the present invention.

Detailed Description

The particular embodiments set forth in the detailed description and other contents of the specification are intended to describe and illustrate possible implementations of the present invention, and unless explicitly stated otherwise, such description and illustrations should not be construed as limiting the scope of the invention but as an admission that the invention is entitled to the broadest possible scope including readily conceivably and practicable alterations, modifications, and equivalents thereof, based on the ordinary knowledge of those skilled in the art.

On the basis of the implementation and without departing from the inventive concept, although specific possible technical solutions are not listed in each embodiment, based on the citation and suggestion in different embodiments, those skilled in the art should be able to obtain these implementation technical solutions without creative efforts based on common knowledge, and these technical solutions obtained by simply combining or replacing various embodiments should also belong to the disclosure of the specific embodiments.

Detailed description of the preferred embodiment

A pressure gauge with a communication function comprises a gauge shell, a pressure guiding pipe, a pressure detection part, a touch display screen, a wireless communication part and a control part;

the pressure-leading pipe is connected with the meter shell and leads fluid medium to the pressure detection part;

the pressure monitoring part detects the pressure of the fluid medium introduced by the pressure leading pipe and converts the pressure into an electric variable to obtain the pressure quantity of the fluid medium;

the touch display screen is arranged on the outer surface of the watch case and displays the pressure and receives an operation instruction input by a user through touch;

the wireless communication part and the watch case are fixedly arranged and used for wirelessly receiving and transmitting data;

the control part is respectively in signal connection with the pressure detection part, the touch display screen and the wireless communication part, as shown in fig. 1, the control part is configured to receive a connection request sent by the handheld terminal through the wireless communication part, the connection request comprises a connection identification code, and the connection identification code is obtained by the handheld terminal from the pressure gauge in a non-wired connection mode; the control part verifies the connection identification code, establishes wireless communication connection with the handheld terminal after the connection identification code passes verification, and transmits pressure to the handheld terminal through the wireless communication part.

In this embodiment, the connection identification code may be obtained from the pressure gauge by the handheld terminal through image reading, or through near field communication such as NFC or RFID, and the pressure gauge includes a corresponding information sending unit;

the wireless communication part can be a WIFI module, a Bluetooth module, a ZigBee module, a 4G module, a 5G module and other various wireless communication modules for realizing data interaction.

In an improvement of the present embodiment, for example, the control portion receives a data transmission rule transmitted from the handheld terminal through the wireless communication portion, stores the data transmission rule, and transmits the amount of pressure according to the data transmission rule during the wireless communication connection until a new data transmission rule is received or the wireless communication connection is disconnected;

further refined, as an example, the data transmission rule may include a pressure amount transmission trigger point:

if the data transmission rule is real-time transmission, the control part stores the setting and transmits the pressure amount to the handheld terminal in real time through the wireless communication part before the setting is changed;

if the data transmission rule is interval transmission, the control part stores the setting and transmits the pressure amount to the handheld terminal through the wireless communication part at intervals of set time length before the setting is changed;

if the data transmission rule is to transmit according to the request, the control part stores the setting, and transmits the pressure amount to the handheld terminal through the wireless communication part after the control part receives the transmission request transmitted by the handheld terminal before the setting is changed;

at the same time, the data sending rule executed by the pressure gauge is one.

For example, the control unit records the pressure amount and the time for acquiring the pressure amount, stores the pressure amount and the time for acquiring the pressure amount in a corresponding manner, and transmits the pressure amount and the time for acquiring the pressure amount to the handheld terminal through the wireless communication unit when transmitting the pressure amount;

in a further refinement, the data transmission rule includes a time of acquisition of whether the amount of pressure is acquired.

In an improvement of the embodiment, for example, the connection request includes an identification code from the handheld terminal, and the control unit is configured to store the identification code, transmit the identification code together when the wireless communication unit transmits the pressure amount to the handheld terminal, so that the handheld terminal performs matching verification according to the identification code, and receive the pressure amount after the verification is passed.

In an improvement of the present embodiment, as an example, the control portion is configured to receive an instruction for generating the connection identification code through the touch display screen, and generate the connection identification code as a two-dimensional code according to the instruction, so that the handheld terminal scans the two-dimensional code to obtain the connection identification code.

In an improvement of the present embodiment, as an example, the control portion is configured to receive at least one setting item sent by the handheld terminal and a setting result corresponding to the at least one setting item; the setting result corresponding to the at least one setting item and the at least one setting item is obtained by the handheld terminal from other pressure meters different from the pressure meter in a non-wired connection mode; at least one setting item comprises an acquisition unit of the pressure amount; and resetting the at least one setting item according to the setting result of the at least one setting item.

Detailed description of the invention

As shown in fig. 2, a method for adapting a pressure gauge and a handheld terminal includes:

the method comprises the steps that the handheld terminal obtains adaptive connection information from a pressure gauge in a first obtaining mode, the adaptive connection information comprises a connection identification code of the pressure gauge, and the first obtaining mode is in non-wired connection;

the handheld terminal generates connection request information and sends the connection request information to the pressure gauge in a second interactive mode, wherein the connection request information comprises a connection identification code, and the second interactive mode is wireless communication different from the first acquisition mode;

responding to the connection request information of the handheld terminal, and establishing a data channel by the handheld terminal and the pressure gauge in a second interaction mode;

the handheld terminal obtains the pressure amount from the pressure gauge through the data channel.

In this embodiment, the first obtaining manner may be image reading, or NFC or RFID.

For example, the handheld terminal presets a pressure measurement model, the pressure measurement model includes one or more measurement control parameters, and the handheld terminal obtains the pressure amount through a data channel according to the measurement control parameters;

further improved, as an example, the adaptive connection information includes metering characteristic information, the handheld device judges whether the pressure gauge conforms to the pressure metering model according to the metering characteristic information, and the handheld terminal sends connection request information to the pressure gauge conforming to the pressure metering model;

further refined, it is also possible, as an example, that the metering control parameter comprises a combination of one or more of a pressure type, an indication type, a significand, or an acquisition period;

further improved, as an example, the pressure measurement model includes a pressure calibration model, and the handheld terminal establishes a data channel with the calibrated pressure gauge in a second interaction manner;

in a further improvement, as an example, the handheld terminal simultaneously establishes a data connection with two or more pressure meters, and determines a reading object of the pressure amount according to the pressure metering model, and at least one group of pressure amounts is acquired through the second interaction mode.

Further improved, as an example, the handheld terminal sends the identification code to the pressure gauge according to the pressure metering model, so that different pressure gauges correspond to different identification codes, and the handheld terminal performs matching verification on the pressure according to the identification code.

For the specific embodiment, if the first obtaining mode is image obtaining, the pressure gauge includes a display unit capable of presenting an image, and the handheld terminal includes a camera unit capable of reading the image;

further improved, as an example, the pressure gauge includes a touch display screen having a display unit and an input unit, and based on a touch instruction of the touch display screen, the pressure gauge generates a two-dimensional code containing adaptive connection information through the touch display screen.

Detailed description of the preferred embodiment

In order to achieve quick, accurate and convenient acquisition of the pressure, a mobile phone or other similar handheld devices and a pressure gauge for detecting the pressure are used to establish a wireless connection when conditions allow, so that the pressure can be checked and read through the mobile phone, however, this solution in the prior art has disadvantages:

when a plurality of objects capable of communicating exist (which is very prominent in a field environment), taking a mobile phone and a pressure gauge for bluetooth communication connection as an example, a plurality of selectable objects exist in a selectable bluetooth communication object list of the mobile phone, and it is required to carefully find and confirm again that the connected object is exactly the required pressure gauge, and a large misconnection possibility still exists;

if the connection object is other equipment, such as a certain dry body furnace supporting Bluetooth communication, the situation is relatively good, and the pressure force which cannot be read can be found immediately during working, so that the problem of misconnection is found;

if the connection object happens to be other pressure metering devices, such as a pressure gauge for measuring another pressure quantity, the prior art can not find the problem at all, for example, two pressure quantities with the same or similar pressure activity ranges exist on the site, and once an error occurs when the communication object is selected in the front, the error can not be found in the subsequent work, thereby causing interference to the actual pressure metering work.

To address this issue, the present embodiment provides a systematic approach.

The pressure gauge is used for measuring the force to be measured.

The pressure gauge comprises a gauge head and a pressure module, a touch display screen is fixedly arranged on the front surface of the gauge head, and a control circuit board, a Bluetooth communication module and a battery module are fixedly arranged in the gauge head; the pressure module is fixedly arranged at the lower part of the gauge head, a pressure sensor is fixedly arranged in the pressure module, a pressure guiding pipe is arranged at the bottom end of the pressure module, is communicated with the bottom end of the pressure module and extends to the pressure sensor, the pressure guiding pipe is electrically connected with the pressure sensor and is fixedly arranged in the pressure module, the pressure module also comprises a signal processing unit, and the control circuit board is electrically connected with the Bluetooth communication module, the signal processing unit, the touch display screen and the battery module respectively; when the pressure sensor works, fluid media enter from the pressure guiding pipe and reach the pressure sensor, the pressure sensor responds to the pressure of the fluid media to generate a first electrical variable, the signal processing unit acquires the first electrical variable from the pressure sensor and generates a second electrical variable after amplification and conversion, and the control circuit board acquires the second electrical variable from the information processing unit and obtains pressure indicating value information after processing.

The pressure gauge has preset functions, including uploading pressure data (such as pressure indication information) through the Bluetooth communication module.

The method comprises the steps that a control circuit board is preset, so that a touch display screen displays a pressure metering control interface, the pressure metering control interface comprises an adaptive connection icon, the adaptive connection icon is clicked, an adaptive connection touch instruction is generated by the touch display screen, the control circuit board obtains the adaptive connection touch instruction, adaptive connection information containing a connection identification code is generated after processing, the touch display screen receives the adaptive connection information, a two-dimensional code is presented in the touch display screen, and the connection identification code is recorded in the two-dimensional code;

the connection identification code and the pressure gauge are directly related, so that the connection identification code can be used as a connection identification basis;

when the pressure gauge receives a connection request through the Bluetooth communication module, the pressure gauge does not directly agree with the connection, but firstly carries out a verification process: and verifying whether the connection request contains a connection identification code, if and only if the connection request contains the connection identification code displayed in the touch display screen, agreeing to the connection request, and establishing a data connection channel with an initiator (such as a mobile phone) of the connection request through the Bluetooth communication module, wherein after the data connection channel is established, the control circuit board is configured to upload the pressure amount (such as pressure indication value information) through the data connection channel.

If the external equipment is illegal equipment, such as a certain mobile phone without data acquisition right, obviously, the external equipment cannot be objectively close to the pressure gauge and acquire the connection identification code, at the moment, even if the mobile phone without data acquisition right can find the pressure gauge through signal search, the connection identification code cannot be contained in the connection request sent by the mobile phone without data acquisition right, at the moment, when the connection request reaches the control circuit board through the Bluetooth communication module, the control circuit board finds the condition of no connection identification code in verification, correspondingly, the control circuit board generates a connection rejection signal, at the moment, the pressure information acquired by the pressure gauge cannot be transmitted to the mobile phone without data acquisition right, and the information safety of metering data is ensured; furthermore, even if the mobile phone without the data acquisition right tries to create a false connection identification code, the pressure gauge does not have any condition of revealing the rule of the connection identification code in the whole interaction process, so the mobile phone cannot pass the verification of the control circuit board;

if the external equipment is wrong-connection legal equipment, for example, a certain mobile phone which has data acquisition right to other pressure gauges, therefore, the request signal is sent to the pressure gauge by wrong operation, at the moment, the connection request reaches the control circuit board through the Bluetooth communication module, the control circuit board can find that the data which is similar to the connection identification code and is contained in the connection request is inconsistent with the connection identification code of the pressure gauge in verification, the connection request is similar to illegal equipment processing, connection is refused, the pressure gauge cannot become a wrong-connection data source, the correctness of metering data is ensured, the metering time wasted in the wrong-connection process is greatly reduced, and the metering operation efficiency is improved.

The mobile phone is used for reading, observing or analyzing the force to be measured.

For convenience of measurement work, a dedicated pressure measurement work application program (hereinafter abbreviated as App) may be configured in the mobile phone.

The method comprises the steps that when an App is opened to enter a pressure metering mode, the App controls a mobile phone to start a camera assembly, adaptive connection information in a two-dimensional code form is obtained from a touch display screen of a pressure gauge through the camera assembly and is analyzed, and a connection identification code of the pressure gauge is obtained;

in the specific embodiment, the pressure gauge is provided with the Bluetooth communication module, so that the Bluetooth communication module of the mobile phone is turned on, the pressure gauge is searched in a communicable range, and a connection request is sent to the pressure gauge after an object is confirmed, wherein the connection request comprises the obtained pressure gauge connection identification code;

as described in the working flow of the pressure gauge in this embodiment, the pressure gauge may verify the connection request, and perform a forward response if and only if the connection identifier matches the pressure gauge setting, at this time, the pressure gauge and the mobile phone are connected through bluetooth communication, and a data channel for data communication is established;

and when the App pressure metering mode is set, after the data connection is confirmed to be established, the mobile phone starts to acquire pressure information from the pressure gauge through the data channel and displays the pressure information in a display interface of the mobile phone.

When the mobile phone sends a connection request to the pressure gauge, if the connection object is an incorrect object, based on the connection identification code contained in the connection request, the connection cannot be established, for example, the connection object is a pressure gauge which does not have verification and response to the connection identification code at all, because the connection identification code is contained in the connection request, the pressure gauge cannot interpret the connection request (for the pressure gauge, the instruction format is unknown or data containing unknown content is included), and certainly cannot establish data connection, for example, the connection object can verify the connection identification code but is not a pressure gauge which expects connection, at this time, the pressure gauge can refuse connection just as described when the pressure gauge faces illegal equipment/misconnection legal equipment; therefore, in the scheme, for a mobile phone user, when the mobile phone is found to be unable to establish connection with the connection object, the wrong connection object can be found and selected as soon as possible, so that the measurement time wasted in the misconnection process is greatly reduced, and the measurement operation efficiency is improved.

In this embodiment, the format or rule of the connection identifier may be any feasible encoding manner in the prior art, and it is required to be clear, general, and the connection identifiers of different pressure gauges are different, and in particular, if the two pressure gauges measure the same pressure amount, the connection identifiers corresponding to the two pressure gauges may be the same.

In this embodiment, the two-dimensional code is used as the transmission carrier for adapting the connection information and the connection identification code contained therein, which is only a feasible way in the prior art, and alternatively or additionally, other image carriers with identification or verification capability are also feasible, for example, only one set of numbers corresponding to the connection identification code is shown in the touch display screen, and after the image is acquired by the camera component, the mobile phone has the function of identifying and processing the numbers in the image (for example, the function is included in App).

For improvement/replacement of some details of the technical solution of the present embodiment, there may be the following solutions:

for a pressure meter and a handheld device to be adapted for connection, both comprise at least two wireless communication modes corresponding to each other, e.g. both the pressure meter and the handheld device comprise a first wireless communication mode and a second wireless communication mode.

The handheld device comprises a first wireless communication mode, a pressure gauge and a handheld device, wherein the first wireless communication mode is near field communication, communication establishment speed is relatively high, data transmission speed is relatively low, such as NFC or RFID, furthermore, the pressure gauge can only use/only use a signal generating unit in the first wireless communication mode, and the handheld device can only use/only use a signal receiving unit in the first wireless communication mode;

the second wireless communication mode can be near field communication, mobile communication or a combination of several communication modes, the communication establishing speed is relatively slow, the data transmission speed is relatively high, such as bluetooth, WIFI and ZigBee, the participating combination can also comprise a wired/wireless (industrial) local area network, and the pressure gauge and the handheld device have data interaction capacity in the second wireless communication mode.

In one example, the pressure gauge includes an NFC chip, the NFC chip may pre-store a connection identifier of the pressure gauge, and the corresponding handheld device includes an NFC module that is switchable to an active mode;

preferably, the control circuit board is in signal connection with the NFC chip, and sends and stores the new connection identification code in the NFC chip when the connection identification code changes, and the NFC chip may be preset in a passive mode, that is, in response to a radio frequency signal of the control circuit board or an external handheld device, the control circuit board may write information stored in the NFC chip, and the external handheld device may read information stored in the NFC chip; in another case, reading and writing of the NFC chip are both completed by an external device, for example, when shipping/initial installation/initial application/information change, a connection identification code is written into the NFC chip by the external NFC device, and when it needs to be used, an NFC module of the handheld device reads information such as the connection identification code stored in the NFC chip from the NFC chip;

the pressure gauge and the handheld device can be located in the same local area network, a point-to-point adaptive connection channel is not established between the pressure gauge and the handheld device, the NFC module of the handheld device is switched to an active mode, and the NFC module reads a connection identification code from the NFC chip;

based on the read connection identification code, sending a connection request to all possible target objects (for example, pressure meters) in the local area network by using the handheld device, where the connection request includes the connection identification code, and after each possible target object receives the connection request, as described in the foregoing description of this embodiment, except for the pressure meter from which the connection identification code is read, other target objects refuse to connect, and the pressure meter to which connection is desired (the pressure meter from which the connection identification code is read) responds to the connection request, so that a data channel adapted to the connection is established between the pressure meter and the handheld device;

after the data channel is established, the handheld device can read pressure information from the pressure gauge in real time;

in this example, the pressure gauge, the handheld device, and the local area network may communicate with each other in a stable manner with a relatively high data transmission speed, without using NFC or RFID technology.

In the improved scheme, the connection identification code adopts a first wireless communication mode with relatively high communication establishing speed and relatively low data transmission speed due to small data volume, and a second wireless communication mode with relatively low communication establishing speed and relatively high data transmission speed is adopted for subsequent pressure transmission due to large data volume and high tightness, so that the respective communication modes of different types of data are processed, the quick adaptive connection between the pressure meter and the handheld device can be ensured, and the reliability and the stability of pressure information transmission can be met.

Detailed description of the invention

The foregoing first embodiment, the second embodiment, and the third embodiment can be improved, and there is a technical solution of the present embodiment.

For pressure measuring operations, comprising at least one pressure gauge for detecting the amount of pressure to be measured and a hand-held device, it is always necessary to take into account the pressure information required by the hand-held device, for example:

the pressure type corresponding to the acquired pressure quantity;

the indication type corresponding to the acquired pressure quantity;

units of indication in the acquired pressure quantity;

a numerical significance in the captured pressure quantity;

the acquired pressure quantity contains time information;

the method comprises the steps that after data connection is established between the handheld device and a pressure gauge, the current pressure is obtained immediately;

after the data connection between the handheld device and the pressure gauge is established, acquiring the pressure amount in a certain time period (for example, 0.3 s);

after the data connection between the handheld device and the pressure gauge is established, the pressure quantity is not immediately acquired but an acquisition instruction is waited, and the pressure quantity is acquired in response to the acquisition instruction;

since there are many possible types of requirements under different scenarios, they are not listed here;

the above-mentioned requirements may be mutually exclusive, and therefore the transmission of the pressure quantity between the pressure gauge and the hand-held device needs to be based on certain rules.

In this embodiment, when the handheld device establishes data connection with the pressure gauge, the handheld device sends a pressure sending rule to the pressure gauge, the wireless communication module of the pressure gauge receives the pressure sending rule and transmits the pressure sending rule to the control module of the pressure gauge, and the control module of the pressure gauge stores the pressure sending rule and sends the pressure according to the rule.

The pressure sending rule is transmitted from the handheld device to the pressure gauge in the form of information data, and the same communication mode is adopted for the connection request, namely the same data channel is adopted for the subsequent transmission of the pressure information.

According to different specific situations, the generation node of the pressure sending rule may also have:

in one case, as shown in fig. 3, the handheld device sends a connection request and a pressure amount sending rule at the same time, the connection request and the pressure amount sending rule reach a control part (corresponding to the control circuit board of the third embodiment) of the pressure gauge through a wireless communication part (corresponding to the bluetooth communication module of the third embodiment) of the pressure gauge, the control part of the pressure gauge processes the connection request first, the specific processing procedure can refer to the first embodiment or the third embodiment, when the connection request is verified, the control part of the pressure gauge processes the pressure amount sending rule, stores the sending rule, and sends the pressure amount according to the rule;

in the other case, the hand-held device transmits the pressure amount transmission rule at the same time as the connection request, and the pressure sending rule is a part of the connection request, as shown in fig. 4, the connection request reaches the control part of the pressure gauge through the wireless communication part of the pressure gauge, and the control part of the pressure gauge processes the connection request, where the processing procedure includes not only the verification of the connection identification code in the first embodiment or the third embodiment but also the verification of the pressure sending rule, when the connection identification code does not pass the verification, the connection is rejected similarly to the foregoing embodiment, when the connection identification code passes the verification, the pressure amount transmission rule does not pass the verification, the connection is rejected while the feedback information indicates that the pressure amount does not conform, when the connection identification code and the pressure sending rule are verified to be passed, establishing data connection and sending the pressure according to the sending rule; for example, the pressure type indicated in the pressure sending rule is gauge pressure, the pressure gauge supports a gauge pressure metering mode, the control part of the pressure gauge stores the pressure sending rule (gauge pressure type), a data channel is established between the pressure gauge and the handheld device in response to the connection request, the pressure gauge sends the pressure to the handheld device through the data channel, and the pressure is gauge pressure; for another example, the pressure type indicated in the pressure sending rule is absolute pressure, and the pressure gauge does not support absolute pressure measurement, the control part of the pressure gauge rejects the connection request, and simultaneously sends feedback information to the handheld device through the wireless communication part, wherein the feedback information includes that the pressure type does not support;

in another case, the handheld device sends the pressure sending rule immediately after the data connection is established, and the pressure gauge sends the pressure according to the sending rule after receiving the pressure sending rule; for example, the handheld device sends a connection request to the pressure gauge, the control part of the pressure gauge processes the connection request, after the verification is passed, data connection is established between the handheld device and the pressure gauge, meanwhile, the pressure gauge feeds back the verification passed and allows data intercommunication to the handheld device through the data connection, the handheld device receives the verification passed information of the pressure gauge, immediately calls a pressure quantity sending rule and sends the pressure quantity sending rule to the pressure gauge, the wireless communication part of the pressure gauge receives the pressure quantity sending rule and forwards the pressure quantity sending rule to the control part of the pressure gauge, and the control part of the pressure gauge stores the sending rule and enables the wireless communication part to send the pressure quantity to the handheld device according to the sending rule; in this example case, after the data connection between the handheld device and the pressure gauge is established, the interval may be very short until the control part of the pressure gauge receives the pressure amount sending rule, but in this process, the control part of the pressure gauge does not actively send the pressure amount unless another pressure amount sending instruction of the handheld device is obtained; for another example, before the handheld device sends the connection request, the handheld device requires to input the pressure sending rule, the input may be to import preset content or may be to input in real time on site, and after the input of the pressure sending rule is completed, the handheld device sends the connection request to the pressure gauge to enter a subsequent process; for another example, the handheld device requests to input a pressure amount sending rule while/after sending the connection request; for another example, the method may be set to be automatically executed, after the handheld device receives the verification passing information of the pressure gauge, if there is a corresponding pressure sending rule, the corresponding pressure sending rule is called, if there is no corresponding pressure sending rule, whether there is a default pressure sending rule is searched in the handheld device/related database and called, if there is neither a corresponding pressure sending rule nor a default pressure sending rule, the handheld device generates a pressure sending rule with empty content and sends the pressure sending rule to the pressure gauge, and for the pressure sending rule with empty content, the control part of the pressure gauge responds to collect and send the pressure according to the preset pressure gauge;

in another case, after the data connection is established, the handheld device sends the pressure sending rule according to the instruction, that is, before the instruction is generated, the handheld device may have obtained pressure information from the pressure gauge, after receiving the adjustment instruction, the handheld device generates a new pressure sending rule and sends the new pressure sending rule to the pressure gauge, the wireless communication part of the pressure gauge receives the new pressure sending rule and transmits the new pressure sending rule to the control part of the pressure gauge, and the control part of the pressure gauge stores the new sending rule and replaces the old sending rule, and then sends the pressure according to the new sending rule.

According to different actual requirements, the pressure sending rule can be in the form of:

in one case, the pressure gauge is preset, and in this case, the handheld device may not send the pressure amount sending rule to the pressure gauge, but directly obtain the pressure amount according to the preset pressure gauge;

in another case, in which it is desired to obtain the amount of pressure at fixed time intervals (i.e., time periods) and other requirements have been satisfied by the preset setting, the hand-held device may transmit a pressure amount transmission rule to the pressure gauge, the transmission rule including transmitting the amount of pressure at intervals at fixed time intervals (e.g., 0.1 s);

in yet another case, the pressure gauge selectable settings include a pressure mode and pressure units, in which case the handheld device may send a pressure amount sending rule to the pressure gauge, and the sending rule includes a pressure mode (e.g., set to an absolute pressure mode) and a pressure unit (e.g., set to kPa);

in general, the pressure amount transmission rule may be preset (default) according to a pressure gauge, a single setting, a combination of multiple settings, or the like.

Based on the technical solution described in this embodiment, a technical solution of the pressure gauge that can support the related technical solution is given as follows.

Example, a pressure gauge, include

The touch control display screen is provided with an input unit and an output unit, instruction information can be input through the touch control display screen, pressure information and control menu information can also be displayed in the touch control display screen, and the instruction input and the information display can be positioned at the same position of the touch control display screen;

the control module is internally packaged with a processing element for data/information processing, a storage element for data/information storage, a clock circuit for generating time signals and a configuration circuit assembly for power supply and signal configuration, is packaged on the surface of the control module and comprises connection sites/electric connection joints (interfaces) for butting other components;

the ZigBee communication module supports multipoint wireless communication connection based on an IEEE 802.15.4 communication standard;

the atmospheric pressure module is used for generating an electric signal corresponding to the standard atmospheric pressure;

the pressure detection module comprises a pressure guiding structure and a pressure signal generation assembly communicated with the pressure guiding structure, a fluid medium corresponding to the pressure to be detected can be introduced to the pressure signal generation assembly accessory through the pressure guiding structure, and the pressure signal sending assembly responds to the pressure of the fluid medium to generate an electric signal corresponding to the pressure quantity; in this example, the pressure detection module is a gage pressure detection module;

the battery module is a 12V battery pack packaged and used for supplying power to all electric components in the pressure gauge; the power supply connector assembly is electrically connected with an external power supply so as to obtain the external power supply to supply power for all electric components in the pressure gauge, and the power supply connector assembly and the battery module can coexist or only exist one of the power supply connector assembly and the battery module;

the control module is respectively and electrically connected with the pressure detection module, the atmospheric pressure module, the ZigBee communication module, the touch display screen and the battery module (or the power connector assembly).

The control module presets and comprises the following functions:

after judging that data connection is established between the ZigBee communication module and external equipment (such as handheld equipment), an electric signal representing pressure is immediately obtained from the pressure detection module, the electric signal is measured and processed to obtain pressure information, and the pressure information is output through the ZigBee communication module;

based on a pressure acquisition instruction transmitted from the ZigBee communication module, an electric signal representing the pressure amount is immediately acquired from the pressure detection module, the electric signal is measured and processed to obtain pressure amount information, and the pressure amount information is output through the ZigBee communication module;

the pressure quantity setting instruction transmitted from the ZigBee communication module is used for storing the setting time (for example, 0.3 s) in the instruction, the control module acquires an electric signal representing the pressure quantity from the pressure detection module, measures the electric signal and obtains pressure quantity information after processing, judgment is carried out based on a time signal generated by the clock circuit, and the pressure quantity information is output through the ZigBee communication module every 0.3 s.

Further, the control module presets and also comprises the following functions:

in the process of processing the pressure electric signal, the final output pressure can be an electric indication value (electric signal with the range of 4-20 mA), specifically, the conversion of the electric indication value can be performed in the pressure detection module, that is, the pressure detection module is provided with a corresponding signal conversion unit, or can also be performed in the control module;

in the foregoing process of processing the pressure electrical signal, the final output pressure amount can be a pressure indication value (pressure measurement unit), specifically, an electrical signal representing the pressure amount is obtained from the pressure detection module, the electrical signal is measured and processed according to the parameters of the pressure detection module, for example, the signal output by the pressure detection module is an electrical measurement signal (4-20 mA), the pressure measurement range of the pressure detection module is 0-10MPa, and the calculation formula of the pressure indication value is as follows:

equation 1

In the formula 1, P represents a pressure indication value corresponding to the pressure amount, P₀Represents the minimum pressure value within the range, in this example 0MPa, Δ P represents the difference between the maximum pressure value and the minimum pressure value within the range, in this example 10MPa, i represents the measured current value₀Represents the minimum value of the electrical measuring range, in this example 4mA, imax represents the maximum value of the electrical measuring range, in this example 16 mA; further, for example, if the measured current value is 16mA, the corresponding pressure value is 7.5 MPa.

Further, the control module presets and also comprises the following functions:

the gauge pressure output is used for acquiring an electric signal representing the pressure from the pressure detection module, measuring the electric signal and processing the electric signal according to the parameters of the pressure detection module to obtain a corresponding pressure indication value, and outputting the obtained pressure indication value;

absolute pressure output, namely acquiring an electric signal representing pressure from a pressure detection module, acquiring an electric signal representing standard atmospheric pressure from an atmospheric pressure module, measuring the two electric signals, respectively processing the two electric signals according to parameters of the pressure detection module and the atmospheric pressure module, calculating the sum of the pressure corresponding to the pressure detection module and the pressure corresponding to the atmospheric pressure module to obtain a pressure indication value, and outputting the obtained pressure indication value;

and differential pressure output, namely acquiring an electric signal representing pressure from the pressure detection module, measuring the electric signal and processing the electric signal according to the parameters of the pressure detection module to obtain corresponding local gage pressure, acquiring another gage pressure from the ZigBee communication module, calculating the difference between the local gage pressure and the other gage pressure to obtain a pressure indication value, and outputting the obtained pressure indication value.

Further, the control module presets and also comprises the following functions:

and a control module which simultaneously records the occurrence time of the electric signal when the electric signal representing the pressure is acquired from the pressure detection module, for example, when the occurrence time of the electric signal corresponds to the 16 th time after the occurrence of the reference time, the occurrence time of the electric signal is recorded as 16s, and so on, and when the pressure information is uploaded, the pressure amount (the electric measurement value or the pressure value) and the corresponding occurrence time are transmitted together.

Further, the control module presets and also comprises the following functions:

the pressure detection module is used for acquiring an electric signal representing the pressure, and the control module is used for recording the occurrence time of the electric signal;

and a control module selects the stored pressure amount and transmits the pressure amount to the ZigBee communication module for uploading based on the pressure amount setting command transmitted from the ZigBee communication module, and generally, one or more pressure amount information and corresponding time stamps are simultaneously output when a group of pressure amount information is output.

Further, the control module is preset and also comprises the following functions:

setting effective digits in output information, namely setting the final effective digits of the output pressure in the process of processing the pressure electric signals, specifically, acquiring the electric signals representing the pressure from the pressure detection module, measuring and processing the electric signals, intercepting data according to the set effective digit number in the range of the most effective digits, wherein the most effective digit number is 7, for example, the most effective digit number can actually set effective digit numbers including four digits, five digits, six digits and the like, the effective digit number is set to four digits, the four-digit effective digits are reserved in the digital part of the output pressure obtained after the electric signals are processed, and rounding is performed on the rest parts;

the pressure unit in the output information is set such that when the output pressure amount is a pressure indication value, optional units include Pa, kPa, MPa, PSI, Tor, and the like, and the pressure unit is set, a digital portion is determined from the pressure unit, for example, 1.600MPa, and when the switching unit is kPa, the output is 1600kPa when the final output pressure amount is processed.

Further, the preset functions of the control modules can be selectively combined among one or more items, for example, gauge pressure which outputs a group of four-digit effective digits with time stamps can be set.

Detailed description of the preferred embodiment

The technical solutions of the foregoing embodiments are provided to enable improvements to be made on the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment.

As for the pressure gauge example described in the fourth embodiment, the functions that may be included in the pressure gauge include: pressure type (gauge pressure/absolute pressure/differential pressure), pressure acquisition mode (immediate/periodic/command), output indication type (electrical indication value/pressure indication value), indication unit, valid number, whether to output a time stamp, whether to output a set of pressure amount, etc.; in this state, when a plurality of pressure amounts are to be obtained, it takes a lot of time to set a plurality of parameters of different pressure gauges, and actually, the obtaining conditions of the pressure amounts may be completely the same, so that the setting work has a lot of repetitive work.

The technical solution of the present embodiment is provided to improve the above situation.

Illustratively, there is a first pressure gauge and a second pressure gauge, wherein the first pressure gauge has completed the pressure amount sending rule setting, and the second pressure gauge has not yet performed the pressure amount sending rule setting.

The pressure sending rule setting of the first pressure gauge can be automatically completed on the first pressure gauge or can be completed through input of a handheld device.

Before preparing to perform the pressure sending rule on the second pressure gauge, obtaining a metering control parameter (i.e., a pressure obtaining related parameter, i.e., specific content of the pressure sending rule in the third embodiment):

as described in the previous embodiments, a data connection is first established between the first pressure gauge and the handheld device (e.g., the process is complete and may be omitted), and the existing metering control parameters are obtained from the first pressure gauge (e.g., the process is complete and may be omitted);

as described in the previous embodiments, a data connection is established between the handheld device and the second pressure gauge (which may be omitted if this process is complete);

and the wireless communication part of the second pressure gauge receives the metering control parameter and transmits the pressure quantity according to the pressure quantity transmission rule contained in the metering control parameter.

If a third pressure gauge with the same requirement exists, establishing data connection between the handheld device and the third pressure gauge in the same way (if the process is completed, the process can be omitted); and the wireless communication part of the third pressure gauge receives the metering control parameter and transmits the pressure quantity according to the pressure quantity transmission rule contained in the metering control parameter.

Above scheme can satisfy the quick reproduction in batches of sending the rule to the pressure gauge, reduces unnecessary repeated operation by a wide margin, promotes pressure gauge work efficiency.

Further, a special data transmission format may be set to implement formatting, normalization and generalization of data transmission, and the table of items of pressure sending rules is set as shown in table 1 below, for example, in connection with the pressure gauge described in the fourth embodiment.

When a handheld device (from a first pressure gauge) is used for acquiring the existing metering control parameters of the first pressure gauge, accompanying setting acquisition instructions comprise a pressure quantity sending rule item table of the table 1, and the acquisition instructions are configured to enable the first pressure gauge (mainly born by a control part of the first pressure gauge) to acquire each parameter item by item according to a table 1 format, and after the acquisition of the metering control parameters is completed, the acquired metering control parameters are sent to a second pressure gauge, a third pressure gauge and other pressure gauges which need to be configured together as a pressure quantity sending rule according to the table 1 format.

Based on the technical solutions described in the present embodiment, the following technical solutions are further improved.

For example, the pressure amount transmission rule item table of table 1 is configured in different pressure tables, and further, the control part of the pressure table is configured such that the control part is configured to:

when the metering control parameters are generated and sent, acquiring the parameters of each item according to the format of the table 1;

and when the metering control parameters are received and applied, identifying and acquiring the parameters of each item according to the format of the table 1.

In particular, when a certain gauge does not have a setting function for a certain setting item, the parameter for the setting item is locked as a specific parameter, for example, the fourth pressure gauge itself is a gauge pressure gauge and does not have a function of switching between different pressure types such as gauge pressure/absolute pressure/differential pressure, and on this basis, the fourth pressure gauge stores the gauge 1, and the settable parameter for the pressure type is locked as gauge pressure.

In a particular case, for example, the fifth pressure gauge has only a function of selective setting in units of indication (indication of pressure), in which case, upon receiving and applying the quantity control parameter, the fifth pressure gauge actually responds only to the setting in units of indication (indication of pressure), but at the same time, the fifth pressure gauge also stores table 1 and operates according to the above example (in practice, when the fifth pressure gauge can assume the acquisition of the corresponding quantity of pressure, it indicates that the relevant parameter of the locked setting item satisfies the operating requirement).

Detailed description of the preferred embodiment

Feasible modifications can be made to the first embodiment, the second embodiment, the third embodiment, the fourth embodiment and the fifth embodiment, and the technical scheme of the present embodiment is provided.

While the foregoing embodiments describe verification of the identification code based on pressure gauge connection, the present embodiments are expected to improve upon the addition of verification of the identification code based on the handheld device.

The pressure gauge comprises a touch display screen, a control module, a WIFI communication module and a pressure detection module, wherein the control module is electrically connected with the touch display screen, the pressure detection module and the WIFI communication module respectively; use handheld device and manometer to establish data connection's in-process, not only acquire the connection identification code from the manometer according to aforementioned specific embodiment, handheld device can produce the identification code based on self equally, during the connection request that handheld device sent the manometer, not only include the connection identification code of manometer, still include handheld device's identification code, then, the object of carrying out the check by the manometer is the connection identification code, the check-up passes the back, manometer and handheld device establish data connection, this moment, the manometer sends the identification code when sending pressure volume information to handheld device, it is subsequent, the object of carrying out the check-up by handheld device is the identification code:

when the identity identification code is matched with the identity identification code recorded by the handheld equipment, the pressure information is really requested by the handheld equipment;

conversely, if a discrepancy occurs between the identification code and the identification code recorded by the handheld device, this indicates that the pressure level information may not be requested by the handheld device.

Specifically, after the control module obtains the identification code through the WIFI communication module, the control module stores the identification code, and then until the identification code is deleted or replaced, the stored identification code indicates that the pressure gauge knows the object for acquiring the pressure, and when the pressure is transmitted, the control module is configured to transmit the identification code along with the pressure, so that the object for receiving the pressure judges whether the object is a corresponding receiving object of the pressure, if the identification code is consistent, the handheld device receives the pressure and uses the pressure, and if the identification code is not consistent, the handheld device refuses to receive the pressure.

The technical scheme of this example has further increased the safety guarantee to the pressure volume information:

starting from the angle of the handheld device, the handheld device can judge whether the pressure is required by the handheld device according to the identification code, typically, when any pressure source sends pressure information to the handheld device, the handheld device can distinguish that the pressure is not required by the handheld device, and refusing to receive and use the pressure information of unknown source and direction ensures that the pressure operation is not interfered by other information;

from the perspective of the pressure gauge, a receiving object of the pressure amount (for example, a handheld device) is enabled to determine whether the receiving object is an expected receiving object of the pressure amount, and further, based on the design of the present embodiment, the receiving object is determined to be a non-receiving object, so that when the data sending object of the pressure gauge has redundant designation or wrong designation, the receiving object can determine whether to reject the data sending object without actually obtaining and analyzing the pressure amount information, thereby avoiding leakage of the pressure amount information and ensuring safety of pressure operation.

On the basis of the specific embodiment, improvements or replacements are made as follows:

generating an instruction based on the connection identification code (or adaptive connection information), receiving the instruction by the control module, generating and outputting a first connection identification code, wherein the first connection identification code is generated randomly, recording the first connection identification code by the control module, and continuously outputting the first connection identification code in subsequent similar instructions until the first connection identification code is generated randomly

The method comprises the steps that a connection request is received through a WIFI communication module, connection request information comprises a first connection identification code, a control module receives and verifies the first connection identification code, and after the verification is passed, the control module controls the WIFI communication module and external equipment (such as a mobile phone) to establish a data interaction channel;

when the verification of the connection request is finished, the control module is configured to immediately generate a second connection identification code which is randomly generated and is theoretically completely different from the first connection identification code, at the moment, when a connection identification code generation instruction is received again, the control module generates and outputs the second connection identification code, when the connection request is received, if the connection identification code contained in the connection request is the first connection identification code, the request is rejected, and if the connection identification code contained in the connection request is the second connection identification code, the verification is passed;

similar to the above process, after the second connection identification code is verified to pass, the control module is configured to immediately generate a third connection identification code, which is randomly generated and theoretically completely different from the first connection identification code and the second connection identification code;

the technical advantage of the alternative scheme is that the safety of the pressure information is further improved, and the illegal equipment can not be accessed to the pressure gauge even if the illegal equipment can obtain the connection identification code through other channels while the legal equipment can be normally connected (the connection identification code is kept unchanged before the connection request is verified);

the alternative scheme is supplemented by that when a connection identification code generation instruction is received, the control module searches whether a connection identification code exists currently or not, if so, the control module skips the connection identification code generation process to directly output the current connection identification code, and if not, a connection identification code is randomly generated; it may be further developed that after a connection identity is generated, a timer is started, a time limit is set, for example 1h, and if the connection identity has not been used within the time limit, the control module is configured to immediately randomly generate a new connection identity when the time limit is exceeded; further improvement can be that when the pressure meter is shut down, the recorded current connection identification code is deleted; the supplementary scheme enables the legal device to have a reasonable delay connection period after obtaining the connection identification code;

as a partial alternative or improvement to this alternative, it may be that the control module is configured to record and associate the first connection identification code and the identification code after verifying that the first connection identification code passes and the identification code of the handheld device is obtained, and at the same time, control the WIFI communication module to enable the pressure meter and the handheld device to establish a data connection capable of transmitting the pressure amount, and when the data connection is disconnected, store the recorded first connection identification code and the identification code associated with each other for a certain period of time, for example, 1h, and if a connection request (including the associated first connection identification code and identification code) is received within the time limit, the verification is passed, and the storage time of the first connection identification code and identification code associated with each other is refreshed at the same time, otherwise, the record of the first connection identification code and identification code is deleted if the time limit is exceeded, in response, rejecting the connection request (including the associated first connection identifier and id) when the connection request is received; the improved scheme mainly aims at connection of repeated switching, for example, one handheld device is used for repeated single-point connection among a plurality of pressure meters, and a reasonable time limit authority storage period is given to the handheld device which passes verification, so that the handheld device can be quickly connected with the pressure meters without acquiring connection identification codes again in the normal operation process, the convenience of pressure measurement operation is ensured, the authority of the handheld device cannot be infinitely extended, and the safety of pressure information is ensured;

as a partial replacement or improvement of the present alternative, it may be that the control module is configured not to generate the second connection identification code immediately after the verification of the connection request including the first connection identification code is completed, but to keep the first connection identification code as the current connection identification code unchanged until the connection identification code generation instruction is received again, and to generate the second connection identification code; the improved scheme is mainly aimed at the condition of multi-point connection which is possible to be outgoing, namely the condition that the pressure gauge needs to output pressure to a plurality of handheld devices at the same time, for example, in the process of one-time pressure measurement operation, a user can firstly use a first handheld device to obtain a first connection identification code, then use a second handheld device to obtain the first connection identification code, and after each handheld device obtains the connection identification code, respectively operate to carry out a connection request without repeatedly refreshing the connection identification codes of the plurality of handheld devices; meanwhile, after the operation is finished, the connection identification code can be refreshed again through the command, so that the safety of the pressure information is ensured.

As an improvement or alternative to this embodiment, the generation of the id code may also be at least partially random:

preferably, the identification code of the handheld device comprises a fixed part and a random generation part, wherein the fixed part is associated with the handheld device itself, for example, different handheld devices can have different fixed parts, thereby realizing the distinction between different handheld devices;

the randomly generated part in the identification code may be associated with the connection request, for example, the identification code (or the random part thereof) is randomly generated each time the connection request is initiated, if so, the identification code is stored for checking the pressure amount during the period when the connection request is verified and data connection is established, and the corresponding identification code is deleted after the data connection is disconnected;

the randomly generated part in the identification code may be associated with the acquired connection identification code corresponding to the pressure gauge, for example, the same identification code is used for the same connection identification code, otherwise, a randomly generated new identification code (or a random part thereof) is used for different connection identification codes, if so, the connection identification code and the identification code are stored in association, the storage may be temporary, for example, a reasonable time limit (24 h) is set, the connection identification code and the identification code stored in association are automatically deleted after the reasonable time limit is exceeded, the storage may also be long-term, that is, under the condition that the storage space allows, the connection identification code and the identification code stored in association may be stored until actively deleted;

the technical advantage of this improvement or alternative is that different ids are provided during different metering operations, thereby enhancing the verification capability of the ids, which is particularly evident when the handheld device is capable of simultaneously acquiring pressure with multiple pressure gauges, and at this time, when multiple pressure amounts are received, the control module is configured to determine whether the pressure amount is required by the meter based on the ids (mainly the fixed part thereof), and to determine the source of the pressure amount based on the ids (mainly the random part).

Detailed description of the preferred embodiment

Feasible modifications can be made to the first embodiment, the second embodiment, the third embodiment, the fourth embodiment, the fifth embodiment and the sixth embodiment, and the technical solutions of the embodiments are provided.

The handheld device is preset with a pressure measurement model, the pressure measurement model is generally pertinently matched with a certain specific pressure measurement scene, and a plurality of different pressure measurement models can be preset in the handheld device based on different operation scenes.

Each pressure measurement model comprises one or more measurement control parameters, and the specific measurement control parameters limit the acquisition condition of the pressure quantity, so that the acquired pressure quantity can meet the requirement of pressure measurement operation;

the handheld equipment acquires the pressure according to the metering control parameters set in the pressure metering model;

furthermore, the handheld device can send all or part of the metering control parameters in the pressure metering model to the pressure gauge, so that the pressure gauge sends the pressure according to the metering control parameters.

For example, if the handheld device stores a first pressure measurement model for conventional monitoring of a pressure at a certain point, the required/included measurement control parameters are as follows:

in table 2-1, "-" indicates no setting, i.e., default setting is the original setting of the pressure gauge, during operation, the handheld device acquires the first pressure amount immediately after establishing data connection with the pressure gauge, the first pressure amount is a real-time pressure amount, then, the handheld device acquires the real-time pressure amount corresponding to the first time from the pressure gauge every 0.3s by using the data connection establishment time as a time reference point, during the acquisition of the pressure amount, the handheld device reads the pressure amount according to a pressure indication value, i.e., a unit part for identifying the pressure amount is a pressure unit, and a digital part for identifying the pressure amount is a numerical value corresponding to the pressure unit;

further, under a condition, the manometer supports to set up output indicating value type and pressure acquisition mode, if so, handheld device sends the measurement control parameter in table 2-1 to the manometer, and the manometer receives these measurement control parameters to set up self operation, specifically include:

the control part of the pressure gauge acquires an electric signal representing the pressure amount from the pressure detection part of the pressure gauge every 0.3 s;

the control part of the pressure gauge processes the electric signal for representing the pressure quantity to convert the electric signal into a pressure indicating value corresponding to the pressure quantity, and the measuring range information of the pressure detection part can be related in the processing process;

the control part of the pressure gauge sends the obtained pressure indication value to the handheld device through the wireless communication part of the pressure gauge;

further, in another case, the output pressure indication value (unit is kPa) fixed on the pressure gauge is obtained and uploaded in 0.1s as a period, if so, the handheld device only controls the pressure gauge to immediately enable the handheld device to obtain the current pressure once after the data connection is established, and then the pressure gauge still keeps the fixed setting work, meanwhile, the handheld device obtains the operation according to the metering control parameters in the table 2-1, typically, the pressure gauge uploads the pressure once every 0.1s, and the handheld device only obtains and displays the pressure at 0.3s and the multiple time point.

The technical solution of the present embodiment is improved, and the following optimization technical solution may be provided.

For example, where the handheld device stores a second pressure measurement model, and the handheld device desires to measure a gage pressure point, the required/included measurement control parameters are as follows:

in table 2-2, the second pressure measurement model mainly requires that the pressure type of the pressure point to be measured is gauge pressure, and from the perspective of continuously observing the pressure expression, also requires that pressure amount information is periodically obtained;

in the operation preparation stage, the handheld equipment is used for obtaining adaptive connection information of the pressure gauge corresponding to the pressure point to be measured, wherein the adaptive connection information not only comprises a connection identification code, but also comprises a part capable of representing the metering characteristic information of the pressure gauge; for example, the adapted connection information includes a set of feature codes describing the pressure type and the measurement range (e.g., gauge pressure, 1.6 MPa), and for example, the connection identifier itself includes a description of the metering feature of the pressure gauge, e.g., the connection identifier is converted into a clear code and then is a series of eighteen bits, the first bit and the second bit are combined to represent the pressure type, and the third bit to the sixth bit are combined to represent the measurement range;

the handheld device acquires adaptive connection information of the pressure gauge, and further, before sending a connection request, the handheld device analyzes the adaptive connection information to acquire metering characteristic information of the pressure gauge contained in the adaptive connection information;

if the pressure type of the pressure gauge is recognized to be gauge pressure, which indicates that the pressure gauge meets the metering control parameter requirements in the table 2-2, the handheld device generates a connection request containing a connection identification code and sends the connection request to the pressure gauge, and in the process, if other pressure gauge metering characteristic information, such as measuring range, is also recognized, the item is not verified because the information is not the information required in the table 2-2;

if the pressure type of the pressure gauge is identified to be settable, the pressure gauge meets the metering control parameter requirement in the table 2-2, the handheld device generates a connection request containing a connection identification code and sends the connection request to the pressure gauge;

if the pressure type of the pressure gauge is identified as absolute pressure (not settable), which indicates that the pressure gauge does not meet the metering control parameter requirements in the table 2-2, the connection to the pressure gauge is stopped and a display interface of the handheld device is prompted to indicate that the pressure type of the pressure object does not meet the requirements.

The technical solution of the present embodiment is improved, and the following optimization technical solution may also be provided.

For example, the handheld device stores a third pressure measurement model for pressure calibration, which is different from the first pressure measurement model and the second pressure measurement model, and the third pressure measurement model is a pressure measurement model facing a multi-pressure gauge, and specifically, the required/included measurement control parameters are as follows:

in tables 2-3, the error ratio a represents the set ratio of the allowable error of the standard pressure gauge to be less than or equal to the allowable error of the pressure gauge to be calibrated, and this parameter is set optionally, and typically, the selectable options include 1/2, 1/3 and 1/4; the error calculation indicates whether or not to perform calculation of an error value after obtaining the standard pressure amount and the corrected pressure amount.

What is different from the other solutions of the foregoing embodiment is that before establishing a connection with the pressure gauge, the handheld device needs to be informed to select whether the target to be accessed is the standard pressure gauge or the calibrated pressure gauge (whether the corresponding pressure amount is the standard pressure amount or the calibrated pressure amount), and generally, the third pressure metering model does not support accessing of pressure amounts other than the standard pressure amount and the calibrated pressure amount.

In one case, the handheld device has established a data connection with the standard pressure gauge, and at this time, the handheld device has obtained relevant measurement characteristic information of the standard pressure gauge in terms of pressure type, output indication type, pressure acquisition mode, indication unit (pressure indication), allowable error and the like;

preparing and being connected by the school pressure gauge, use handheld device to follow and acquire adaptation connection information fast by the school pressure gauge, including the measurement characteristic information by the school pressure gauge in the adaptation connection information, handheld device is to the adaptation connection information of being proofreaded the pressure gauge and is analyzed, obtains the measurement characteristic information by the school pressure gauge, uses the measurement characteristic information of being proofreaded the pressure gauge and compares with the measurement characteristic information of standard pressure gauge:

if the pressure type of the standard pressure gauge is absolute pressure and is fixed and unsettable, the obtained metering characteristic information of the pressure gauge to be calibrated comprises the pressure type, and the pressure type of the pressure gauge to be calibrated is gauge pressure and is fixed and unsettable, the pressure type project verification is not passed;

if the pressure type of the standard pressure gauge is absolute pressure and can be set, and the obtained pressure type of the calibrated pressure gauge is gauge pressure, the pressure type project verification is passed;

if the pressure type of the standard pressure gauge is absolute pressure and is fixed and unsettable, and the obtained pressure type of the calibrated pressure gauge is gauge pressure and settable, the pressure type project verification is passed;

if the pressure type of the standard pressure gauge is absolute pressure and can be set, and the obtained pressure type of the calibrated pressure gauge is gauge pressure and can be set, the pressure type project verification is passed;

if the pressure type of the standard pressure gauge is absolute pressure and the obtained pressure type of the calibrated pressure gauge is also absolute pressure, the pressure type item is verified to be passed;

if the pressure type of the calibrated pressure gauge is not obtained, the pressure type item is verified to be passed;

the verification condition of the output indicating value type and the indicating value unit is similar to the pressure type, namely if the fact that the pressure gauge to be calibrated and the standard pressure gauge are inconsistent on a specific verification item is obtained and the inconsistency cannot be solved through setting, the item is judged to be not verified, if the fact that the pressure gauge to be calibrated and the standard pressure gauge are consistent on the specific verification item is obtained, the item is judged to be verified to be passed, the inconsistency condition cannot be judged (the item has the possibility of realizing consistency through setting, namely at least one of the pressure gauge to be calibrated and the standard pressure gauge is settable in the item; the metering characteristic information of the pressure gauge to be calibrated cannot be obtained), and the item is judged to be verified to be passed;

if the range of the standard pressure gauge covers the range of the pressure gauge to be calibrated (including the range of the standard pressure gauge is the same as the range of the pressure gauge to be calibrated), the verification of the range item is passed;

if the range of the standard pressure gauge only covers part of the range of the calibrated pressure gauge, the verification of the range item is not passed and a prompt is sent out at the same time;

if the range of the standard pressure gauge can not cover the range of the pressure gauge to be calibrated, the verification of the range item is not passed;

if the allowable error of the standard pressure gauge is less than or equal to the set proportion A of the allowable error of the pressure gauge to be calibrated, the error item is verified to be passed;

if the allowable error of the standard pressure gauge is larger than the set proportion of the allowable error of the pressure gauge to be calibrated, and the allowable error of the standard pressure gauge is smaller than or equal to one half of the allowable error of the pressure gauge to be calibrated, a prompt is not sent out when the error item passes the verification;

if the allowable error of the standard pressure gauge is greater than one half of the allowable error of the pressure gauge to be calibrated, the error item is not verified;

similar to the other items, if the range and/or the allowable error of the calibrated pressure gauge cannot be obtained, the error/range item is judged to be verified.

If all the items in the tables 2-3 are judged to pass the verification, the handheld device sends a connection request to the pressure gauge to be calibrated, the connection request comprises a connection identification code of the pressure gauge to be calibrated, and after the connection request is responded by the pressure gauge to be calibrated, the handheld device can execute the pressure calibration operation:

unifying the pressure acquisition settings of the standard pressure gauge and the pressure gauge to be calibrated;

selecting one or more calibration points;

when the pressure reaches the pressure value of the calibration point, sending an instruction to the handheld device, synchronously acquiring the pressure quantity from the standard pressure gauge and the calibrated pressure gauge by the handheld device according to the instruction, wherein the pressure types of the pressure quantities of the standard pressure gauge and the calibrated pressure gauge are the same, the output indication value types are the same, and the indication value units are the same;

recording the pressure quantity obtained from a standard pressure gauge as a standard pressure quantity, recording the pressure quantity obtained from a calibrated pressure gauge as a calibrated pressure quantity, and calculating the difference between the standard pressure quantity and the calibrated pressure quantity to obtain a corresponding pressure quantity error;

comparing the error in the amount of pressure with the tolerance of the calibrated pressure gauge, if the error in the amount of pressure is greater than the tolerance of the calibrated pressure gauge, a prompt is provided by the handheld device, such as marking a set of standard amount of pressure, calibrated amount of pressure and error in the amount of pressure that is out of tolerance with a different and striking color.

The process for acquiring and setting the pressure of the automatic unified standard pressure gauge and the pressure of the calibrated pressure gauge comprises the following steps:

obtaining a metering control parameter according to the table 2-3; for the pressure type, for example, if the pressure type of the standard pressure gauge and the pressure type of the pressure gauge to be calibrated in the previous verification process are the same, recording the same parameter as the pressure type parameter, if the pressure type of the standard pressure gauge in the previous verification process is fixed, recording the parameter of the standard pressure gauge as the pressure type parameter, and if the pressure type of the standard pressure gauge in the previous verification process is settable, recording the parameter of the pressure gauge to be calibrated as the pressure type parameter; outputting the metering control parameter acquisition/recording mode corresponding to the indicating value type and the indicating value unit;

respectively sending the acquired metering control parameters to a standard pressure gauge and a calibrated pressure gauge;

the control part of the standard pressure gauge receives the metering control parameter and performs setting according to the metering control parameter, so that the standard pressure gauge works according to the metering control parameter and feeds back a setting result to the handheld equipment; the control part of the calibrated pressure meter receives the metering control parameter and carries out setting according to the metering control parameter, so that the pressure meter works according to the metering control parameter, and a setting result is fed back to the handheld device.

If one or more items in tables 2-3 are judged to be not verified, the handheld device refuses to send the connection request to the calibrated pressure gauge and prompts in the display interface thereof, for example, the pressure type and the range item are not verified, the handheld device refuses to send the connection request to the calibrated pressure gauge and displays in the display interface thereof that the calibrated pressure gauge cannot be calibrated, for the reason: pressure type and range disagreement ";

if only the range item in tables 2-3 is verified to be not passed and meets the condition that the range item verification does not pass and prompt is sent at the same time in the assumption, displaying the range of the standard pressure gauge and the range of the pressure gauge to be calibrated in a display interface of the handheld device, and providing a selection interface, if the deviation is selected to be ignored, the range item is verified to be passed, if the deviation is not selected to be ignored (including not making any selection and waiting for system default), the range item is verified to be not passed, and the handheld device directly refuses to send the connection request and does not prompt any more;

if only the error item in tables 2-3 is verified as failed, and the situation of "error item verification failed while issuing a prompt" in the aforementioned assumption is met, displaying the allowable error of the standard pressure gauge and the allowable error of the calibrated pressure gauge in the display interface of the handheld device, and satisfied proportions, for example, the set error proportion is 1/4, the allowable error of the actual standard pressure gauge is equivalent to 0.3 (namely, between 1/3 and 1/4) of the allowable error of the calibrated pressure gauge, then a satisfied ratio is displayed of 1/3 and a selection interface is provided, such as selecting to ignore this discrepancy, the error item is considered as verification pass, if the deviation is not selected to be ignored (including no selection is made to wait for the default of the system), the error item is considered as verification fail, and the handheld device directly refuses to send the connection request and does not prompt any more.

When a plurality of pressure meters to be calibrated are calibrated simultaneously, the method is also similar to the method, and is slightly different from the technical scheme in that the starting node of the operation of 'unifying the standard pressure meter and the pressure quantity of the pressure meter to be calibrated' is set:

in one mode, similar to a single pressure gauge to be calibrated, the handheld device performs a uniform configuration of pressure acquisition setting once every time a data connection is established with one pressure gauge to be calibrated, and further, the uniform configuration is performed for all currently accessed standard pressure gauges and pressure gauges to be calibrated;

in another mode, the unified configuration of the pressure amount acquisition setting is performed manually, that is, after data connection is established between all standard pressure meters and between the calibrated pressure meter and the handheld setting, an instruction is input into the handheld device, and then the handheld device performs the unified configuration of the pressure amount acquisition setting for all currently accessed standard pressure meters and calibrated pressure meters.

In another case, the handheld device may also establish a data connection with the calibrated pressure gauge, and before preparing to establish a data connection with the standard pressure gauge:

using the handheld device to quickly acquire adaptive connection information from a standard pressure gauge to be accessed, wherein the adaptive connection information comprises metering characteristic information of the standard pressure gauge, and analyzing the adaptive connection information of the standard pressure gauge by the handheld device to acquire the metering characteristic information of the standard pressure gauge;

based on a third pressure measurement model measurement control parameter table in the tables 2-3, comparing the measurement characteristic information of the standard pressure gauge with the measurement characteristic information of the pressure gauge to be calibrated one by one in the tables 2-3, and if all the items are judged to be verified, the handheld device sends a connection request to the standard pressure gauge to be accessed, wherein the connection request comprises a connection identification code of the standard pressure gauge;

the connection request is responded by the standard pressure gauge, and the handheld device establishes data connection with the standard pressure gauge and the calibrated pressure gauge respectively;

carrying out unified configuration of pressure quantity acquisition setting of a standard pressure gauge and a calibrated pressure gauge;

selecting one or more calibration points;

when the pressure reaches the pressure value of the calibration point, sending an instruction to the handheld device, synchronously acquiring the pressure quantity from the standard pressure gauge and the calibrated pressure gauge by the handheld device according to the instruction, wherein the pressure types of the pressure quantities of the standard pressure gauge and the calibrated pressure gauge are the same, the output indication value types are the same, and the indication value units are the same;

recording the pressure quantity obtained from a standard pressure gauge as a standard pressure quantity, recording the pressure quantity obtained from a calibrated pressure gauge as a calibrated pressure quantity, and calculating the difference between the standard pressure quantity and the calibrated pressure quantity to obtain a corresponding pressure quantity error;

comparing the error in the amount of pressure with the tolerance of the calibrated pressure gauge, if the error in the amount of pressure is greater than the tolerance of the calibrated pressure gauge, a prompt is provided by the handheld device, such as marking a set of standard amount of pressure, calibrated amount of pressure and error in the amount of pressure that is out of tolerance with a different and striking color.

The two technical schemes under the third pressure measurement model respectively correspond to two evaluation ideas under the same concept:

firstly, a standard pressure gauge is accessed, and the subsequent operation is actually carried out, so that the calibrated pressure gauge to be calibrated is quickly and accurately screened; the technical scheme is applied under the typical working condition that a plurality of calibrated pressure meters have certain difference, and the scene is characterized in that a plurality of pressure calibration operations can be simultaneously carried out, each pressure calibration operation adopts different standard pressure meters, for a single pressure calibration operation point, one pressure meter to be calibrated is selected from a group of calibrated pressure meters to be accessed, the adaptive connection information of the calibrated pressure meters is obtained and verified according to the technical scheme, the pressure meters which can be calibrated are reserved, the pressure meters which cannot be calibrated are returned, and the operation is repeated, so that the adaptation can be quickly completed without worrying about omission and mismatching;

firstly, accessing a calibrated pressure gauge, and quickly and accurately screening an available standard pressure gauge in the subsequent operation practical evaluation; the technical scheme is applied to the typical working conditions that a plurality of high-precision pressure meters are provided, and the scene is characterized in that an available standard pressure meter is quickly determined from a high-precision pressure meter group which is difficult to distinguish, one pressure meter or a plurality of pressure meters to be calibrated can be connected in a networking mode in a preposed mode, one pressure meter is selected from the high-precision pressure meter group, adaptive connection information of the high-precision pressure meter is obtained and verified according to the technical scheme, if the requirements are met, standard pressure meter selection is completed, calibration operation can be carried out, and if the requirements cannot be met, comparison is continuously carried out on other high-precision pressure meters.