阅读说明：本技术 一种压力显示变送器及其控制方法 (Pressure display transmitter and control method thereof ) 是由 余奇敏 罗臣 余海杭 于 2021-11-29 设计创作，主要内容包括：本发明公开一种压力显示变送器及其控制方法,其包括压力变送器本体、显示模组、发射天线以及压力传感模块；所述显示模组包括护罩和显示控制电路板；所述护罩设置于所述显示控制电路板的正面；所述护罩上嵌接有数码显示管；所述数码显示管与显示控制电路板电连接；所述显示控制电路板的背面设有电源模块和显示管驱动芯片；所述电源模块通过电源稳压芯片为显示控制电路板供电；所述数码显示管受控于所述显示管驱动芯片；所述显示控制电路板的背面还设有ST单片机；所述压力传感模块与ST单片机电连接。本发明采用压力传感模块,运用高性能ST单片机数字信号检测,精密先进线路设计,并带压力显示功能,工作稳定可靠,抗干扰能力强,直观实用。(The invention discloses a pressure display transmitter and a control method thereof, wherein the pressure display transmitter comprises a pressure transmitter body, a display module, a transmitting antenna and a pressure sensing module; the display module comprises a shield and a display control circuit board; the protective cover is arranged on the front surface of the display control circuit board; a digital display tube is embedded on the protective cover; the digital display tube is electrically connected with the display control circuit board; the back of the display control circuit board is provided with a power supply module and a display tube driving chip; the power supply module supplies power to the display control circuit board through the power supply voltage stabilizing chip; the digital display tube is controlled by the display tube driving chip; the back of the display control circuit board is also provided with an ST single chip microcomputer; and the pressure sensing module is electrically connected with the ST singlechip. The invention adopts the pressure sensing module, utilizes the digital signal detection of the high-performance ST singlechip, precisely advances the circuit design, has the pressure display function, and has stable and reliable work, strong anti-interference capability, intuition and practicability.)

1. A pressure display transmitter comprises a pressure transmitter body, a display module, a transmitting antenna and a pressure sensing module; the method is characterized in that:

the display module comprises a shield and a display control circuit board; the protective cover is arranged on the front surface of the display control circuit board; a digital display tube is embedded on the protective cover; the digital display tube is electrically connected with the display control circuit board; the back of the display control circuit board is provided with a power supply module and a display tube driving chip; the power supply module supplies power to the display control circuit board through the power supply voltage stabilizing chip; the digital display tube is controlled by the display tube driving chip; the back of the display control circuit board is also provided with an ST single chip microcomputer; and the pressure sensing module is electrically connected with the ST singlechip.

2. The pressure display transmitter of claim 1, wherein the back of the display control circuit board is further provided with a signal processing chip; the signal processing chip is used for processing the signals collected by the pressure sensing module and sending the signals to the transmitting antenna.

3. The pressure display transmitter of claim 2, wherein the back of the display control circuit board is further provided with a program monitoring chip; the program monitoring chip is used for monitoring the operating state of the pressure display transmitter.

4. The pressure display transmitter of claim 3, wherein the ST single chip microcomputer is electrically connected with the digital display tube through a display tube driving chip.

5. The pressure display transmitter of claim 4, wherein the display control circuit board further comprises an operation configuration button and a protection switch button; the operation configuration buttons comprise an up-adjustment button, a down-adjustment button and a setting button.

6. The pressure display transmitter of claim 5, wherein the operating temperature of the pressure display transmitter is in the range of-50 ℃ to 50 ℃; the working humidity range is 20-90% RH; the working atmospheric pressure is 86KPa to 106 KPa; the pressure measuring range of the pressure sensing module is-100 Pa.

7. A pressure display transmitter control method is realized based on the pressure display transmitter of any one of the claims 1-6; the method is characterized in that: the method comprises the following steps:

s1: positive and negative pressure gas is connected to the pressure sensing module to electrify the pressure display transmitter;

s2: the signals detected by the pressure sensing module are processed and then transmitted to the ST singlechip, and the signals are transmitted to the digital display tube by the ST singlechip to display the gas pressure;

s3: the digital tube flickers, the communication address can be adjusted by pressing the up key or the down key, if the display does not return to 0 when no air pressure is input, the display returns to zero by long pressing the up key and the down key; after the communication address is adjusted, the ST single chip microcomputer transmits signals to the transmitting antenna, and the transmitting antenna transmits the signals to the terminal through the wireless communication module.

8. The method of claim 7, wherein the step of processing the signal detected by the pressure sensing module and transmitting the processed signal to the ST single chip microcomputer comprises: a filter circuit, a signal amplification circuit and a conversion circuit are arranged in the pressure transmitter body, and the pressure sensing module is connected with the filter circuit; the filter circuit is connected with the signal amplification circuit; the signal amplifying circuit is connected with the converting circuit; the conversion circuit is connected with the ST singlechip.

9. The pressure display transmitter control method according to claim 8, wherein a wireless communication circuit and a display tube driving circuit are further provided in the pressure transmitter body; the ST singlechip is connected with the digital display tube through a display tube driving circuit; and the ST singlechip is connected with the transmitting antenna through a wireless communication circuit.

10. The method of claim 9, wherein the wireless communication module is an RS-485 communication module, and the RS-485 communication module is implemented based on an RS-485 MODBUS communication protocol.

Technical Field

The invention relates to the technical field of parameter measurement and display, in particular to a pressure display transmitter and a control method thereof.

Background

At present, pressure signals are mainly acquired through a pressure transmitter for measurement, and the traditional pressure transmitter transmits data in a two-wire system or four-wire system mode. At present, most of novel transmitters are wired measurement, and when a traditional pressure transmitter is installed and used, cables must be laid, so that not only the cost of the cables must be considered, but also the labor cost and the maintenance cost in the future brought by the cost must be considered. And the existing transmitter has poor working stability and weak anti-interference capability, and is difficult to adapt to various working environments.

Disclosure of Invention

In order to solve at least one technical problem in the background art, the invention provides a pressure display transmitter and a control method thereof.

A pressure display transmitter comprises a pressure transmitter body, a display module, a transmitting antenna and a pressure sensing module;

the display module comprises a shield and a display control circuit board; the protective cover is arranged on the front surface of the display control circuit board; a digital display tube is embedded on the protective cover; the digital display tube is electrically connected with the display control circuit board; the back of the display control circuit board is provided with a power supply module and a display tube driving chip; the power supply module supplies power to the display control circuit board through the power supply voltage stabilizing chip; the digital display tube is controlled by the display tube driving chip; the back of the display control circuit board is also provided with an ST single chip microcomputer; and the pressure sensing module is electrically connected with the ST singlechip.

As a preferred scheme, the back of the display control circuit board is also provided with a signal processing chip; the signal processing chip is used for processing the signals collected by the pressure sensing module and sending the signals to the transmitting antenna.

As a preferred scheme, a program monitoring chip is further arranged on the back of the display control circuit board; the program monitoring chip is used for monitoring the operating state of the pressure display transmitter.

As a preferred scheme, the ST singlechip is electrically connected with the digital display tube through a display tube driving chip.

As a preferred scheme, the display control circuit board is further provided with an operation configuration button and a protection switch button; the operation configuration buttons comprise an up-adjustment button, a down-adjustment button and a setting button.

As a preferred scheme, the working temperature range of the pressure display transmitter is-50 ℃ to 50 ℃; the working humidity range is 20-90% RH; the working atmospheric pressure is 86KPa to 106 KPa; the pressure measuring range of the pressure sensing module is-100 Pa.

A pressure display transmitter control method is realized based on the pressure display transmitter; the method comprises the following steps:

s1: positive and negative pressure gas is connected to the pressure sensing module to electrify the pressure display transmitter;

s2: the signals detected by the pressure sensing module are processed and then transmitted to the ST singlechip, and the signals are transmitted to the digital display tube by the ST singlechip to display the gas pressure;

s3: the digital tube flickers, the communication address can be adjusted by pressing the up key or the down key, if the display does not return to 0 when no air pressure is input, the display returns to zero by long pressing the up key and the down key; after the communication address is adjusted, the ST single chip microcomputer transmits signals to the transmitting antenna, and the transmitting antenna transmits the signals to the terminal through the wireless communication module.

As a preferred scheme, the step of processing and transmitting the signal detected by the pressure sensing module to the ST singlechip comprises: a filter circuit, a signal amplification circuit and a conversion circuit are arranged in the pressure transmitter body, and the pressure sensing module is connected with the filter circuit; the filter circuit is connected with the signal amplification circuit; the signal amplifying circuit is connected with the converting circuit; the conversion circuit is connected with the ST singlechip.

As a preferred scheme, a wireless communication circuit and a display tube driving circuit are also arranged in the pressure transmitter body; the ST singlechip is connected with the digital display tube through a display tube driving circuit; and the ST singlechip is connected with the transmitting antenna through a wireless communication circuit.

As a preferred scheme, the wireless communication module is an RS-485 communication module, and the RS-485 communication module is realized based on an RS-485 MODBUS communication protocol.

Has the advantages that: the invention adopts the pressure sensing module and the high-performance ST singlechip digital signal detection by arranging the transmitting antenna, the display control circuit board, the digital display tube and the ST singlechip, accurately carries out the circuit design in advance and has the pressure display function, thereby having stable and reliable work, strong anti-interference capability, intuition and practicability and being suitable for various working environments. The product is suitable for various temperature and humidity measurement and control occasions such as national defense, scientific research, meteorology, post and telecommunications, chemical industry, environmental protection, hotels, heating ventilation air conditioners, automatic buildings, medical sanitation, material storage and the like.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is an internal structural view of a display module in embodiment 1 of the present invention.

Fig. 3 is a block diagram of the steps of embodiment 2 of the present invention.

Fig. 4 is a schematic diagram of embodiment 2 of the present invention.

In the figure: 1-a pressure transmitter body; 2-a display module; 3-a transmitting antenna; 4-a pressure sensing module; 201-a shield; 202-display control circuit board; 203-digital display tube; 204-operating configuration buttons; 205-protection switch button; 206-a signal processing chip; 207-program monitoring chip; 208-ST singlechip; 209-display tube driving chip; 210-power supply voltage stabilization chip; 211-power supply module.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the present invention, it should be noted that, unless otherwise specifically stated or limited, the terms "disposed", "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1-2, embodiment 1 provides a pressure display transmitter, which includes a pressure transmitter body 1, a display module 2, a transmitting antenna 3 and a pressure sensing module 4; the display module 2 comprises a shield 201 and a display control circuit board 202; the shield 201 is arranged on the front surface of the display control circuit board 202; a digital display tube 203 is embedded on the shield 201; the digital display tube 203 is electrically connected with the display control circuit board 202; the back of the display control circuit board 202 is provided with a power module 211 and a display tube driving chip 209; the power supply module 211 supplies power to the display control circuit board 202 through the power supply voltage stabilizing chip 210; the digital display tube 203 is controlled by the display tube driving chip 209; the back of the display control circuit board 202 is also provided with an ST single chip microcomputer 208; the pressure sensing module 4 is electrically connected with the ST singlechip 208.

In this embodiment, a signal processing chip 206 is further disposed on the back of the display control circuit board 202; the signal processing chip 206 is configured to process the signal collected by the pressure sensing module 4 and send the signal to the transmitting antenna 3.

In this embodiment, a program monitoring chip 207 is further disposed on the back of the display control circuit board 202; the program monitor chip 207 is used to monitor the operating status of the pressure display transmitter.

In this embodiment, the ST single chip 208 is electrically connected to the digital display tube 203 through a display tube driving chip 209.

In this embodiment, the display control circuit board 202 is further provided with an operation configuration button 204 and a protection switch button 205; the operation configuration buttons 204 include an up button, a down button, and a set button.

In the embodiment, the working temperature range of the pressure display transmitter is-50 ℃ to 50 ℃; the working humidity range is 20-90% RH; the working atmospheric pressure is 86KPa to 106 KPa; the pressure measuring range of the pressure sensing module 4 is-100 Pa.

By adopting the scheme of the embodiment, the transmitting antenna 3, the display control circuit board 202, the digital display tube 203 and the ST single chip microcomputer 208 are arranged, the pressure sensing module is adopted, the high-performance ST single chip microcomputer digital signal detection is applied, the circuit design is precisely advanced, the pressure display function is provided, the working is stable and reliable, the anti-interference capability is strong, the operation is visual and practical, and the device is suitable for various working environments; set up power module, utilize power module to provide working power supply, effectively ensured that the pressure transmitting module can normally work under the outage condition, be provided with power voltage stabilizing chip moreover and can guarantee power module's normal work, reduced personnel's cost of maintaining. The product is suitable for various temperature and humidity measurement and control occasions such as national defense, scientific research, meteorology, post and telecommunications, chemical industry, environmental protection, hotels, heating ventilation air conditioners, automatic buildings, medical sanitation, material storage and the like.

Example 2

Referring to fig. 3-4, this embodiment 2 provides a pressure display transmitter control method, which is implemented based on the pressure display transmitter described in embodiment 1; the method comprises the following steps:

s1: positive and negative pressure gas is connected to the pressure sensing module 4 to power on the pressure display transmitter;

s2: the signals detected by the pressure sensing module 4 are processed and then transmitted to the ST singlechip 208, and the signals are transmitted to the digital display tube by the ST singlechip 208 to display the gas pressure;

s3: the digital tube flickers, the communication address can be adjusted by pressing the up key or the down key, if the display does not return to 0 when no air pressure is input, the display returns to zero by long pressing the up key and the down key; after the communication address is adjusted, the ST single chip microcomputer 208 transmits the signal to the transmitting antenna 3, and the transmitting antenna 3 transmits the signal to the terminal through the wireless communication module.

In this embodiment, the step of processing the signal detected by the pressure sensing module 4 and transmitting the processed signal to the ST single chip 208 includes: a filter circuit, a signal amplification circuit and a conversion circuit are arranged in the pressure transmitter body 1, and the pressure sensing module 4 is connected with the filter circuit; the filter circuit is connected with the signal amplification circuit; the signal amplifying circuit is connected with the converting circuit; the conversion circuit is connected with the ST singlechip 208.

In this embodiment, a wireless communication circuit and a display tube driving circuit are further arranged in the pressure transmitter body 1; the ST singlechip 208 is connected with the digital display tube through a display tube driving circuit; the ST singlechip 208 is connected with the transmitting antenna 3 through a wireless communication circuit.

In this embodiment, the wireless communication module is an RS-485 communication module, and the RS-485 communication module is implemented based on an RS-485 MODBUS communication protocol; wherein the communication protocol comprises: communication address: 0-15 can be set, and the baud rate is as follows: 4800bps, data bits: 8bit, check bit: note, stop bit: 1bit, pressure: 40011 readable (minimum value: 0-200, vs. -100 Pa).

By adopting the scheme of the embodiment, the signal received by the pressure sensing module is transmitted to the ST singlechip after filtering, amplifying and analog-to-digital converting, then the ST singlechip transmits the pressure signal to the digital display tube and the transmitting antenna respectively, and the transmitting antenna transmits the pressure information to the outside so as to achieve the purpose of wireless transmission; the arrangement of signal transmission cables is reduced through wireless transmission, and the personnel cost and the maintenance cost are reduced; the scheme has simple principle, can realize wireless transmission of pressure signals and has wide application prospect.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.