阅读说明：本技术 一种压力传感器装置及控制方法 (Pressure sensor device and control method ) 是由 孙运中 孙辰龙 李荣玖 靳良真 潘晓 于 2020-06-29 设计创作，主要内容包括：本发明公开了一种压力传感器装置及控制方法,装置包括基座、第一压力传感器、第二压力传感器、动力机构、连通轴和主控单元,基座上设置有第一检测通道、第二检测通道、连通通道和介质进入通道,第一压力传感器设在第一检测通道内,第二压力传感器设在第二检测通道内,连通轴设在连通通道内。初始状态下第一压力传感器投入使用,第一检测通道、连通通道和介质进入通道连通,第一压力传感器采集介质压力值不正常时,主控单元启动第二压力传感器,控制动力机构动作去作用连通轴移动,使第二检测通道、连通通道和介质进入通道连通,实现不停机自动切换压力传感器。可见,本发明保证了应用本发明设备比如柴油机运行的可靠性。(The invention discloses a pressure sensor device and a control method, the device comprises a base, a first pressure sensor, a second pressure sensor, a power mechanism, a communicating shaft and a main control unit, wherein the base is provided with a first detection channel, a second detection channel, a communicating channel and a medium inlet channel, the first pressure sensor is arranged in the first detection channel, the second pressure sensor is arranged in the second detection channel, and the communicating shaft is arranged in the communicating channel. The first pressure sensor is put into use in an initial state, the first detection channel, the communication channel and the medium inlet channel are communicated, when the first pressure sensor collects a medium pressure value, the main control unit starts the second pressure sensor, and controls the power mechanism to act to move the communication shaft, so that the second detection channel, the communication channel and the medium inlet channel are communicated, and the automatic switching of the pressure sensor without stopping is realized. It can be seen that the present invention ensures the reliability of operation of devices such as diesel engines in which the present invention is applied.)

1. A pressure sensor device comprises a base, a first pressure sensor and a second pressure sensor, wherein the first pressure sensor and the second pressure sensor are arranged on the base; a detection end of the first pressure sensor is arranged in the first detection channel; a detection end of the second pressure sensor is arranged in the second detection channel; a communicating shaft is arranged in the communicating channel, and the length of the communicating channel is greater than that of the communicating shaft;

the base is further provided with a power mechanism, the power mechanism acts on the communicating shaft to move in the communicating channel so as to communicate the first detection channel with the medium inlet channel or communicate the second detection channel with the medium inlet channel, a sealing structure is arranged between the communicating shaft and the inner wall of the communicating channel, and the sealing structure seals the first detection channel and the second detection channel in an isolating mode;

the device further comprises a main control unit, the main control unit is respectively electrically connected with the first pressure sensor, the second pressure sensor and the power mechanism, and the main control unit controls the power mechanism and the second pressure sensor to work according to an electric signal corresponding to the pressure of the transmission medium of the first pressure sensor.

2. The pressure sensor device of claim 1, wherein a limiting structure is disposed between the communication shaft and the inner wall of the communication channel, and the limiting structure limits the communication shaft.

3. The pressure sensor device of claim 1, wherein a positioning structure is disposed between the communication shaft and the base, the positioning structure positioning the communication shaft.

4. The pressure sensor device as claimed in claim 1, wherein the power mechanism comprises an electromagnetic coil arranged at one end of the communicating shaft, the electromagnetic coil is electrically connected with the main control unit, the main control unit energizes the electromagnetic coil, the electromagnetic coil is energized to generate a magnetic field to form an electromagnet, and the electromagnet acts on the communicating shaft to move;

and a first return spring is sleeved on the side, close to the electromagnetic coil, of the communication shaft.

5. The pressure sensor device according to claim 2, wherein the limiting structure includes a limiting boss provided on the communicating shaft, and a limiting groove provided on an inner wall of the communicating channel, a width of the limiting groove in an extending direction of the communicating shaft is larger than a width of the limiting boss, and the limiting boss is provided between the first detecting channel and the second detecting channel.

6. The pressure sensor device as claimed in claim 5, wherein the top and bottom edges of the limiting boss are provided with 45 ° limiting slopes, and the notch of the limiting groove is provided with a limiting matching slope matching with the limiting slopes.

7. The pressure sensor device of claim 6, wherein the sealing structure is a sealing rubber layer provided on the stopper slope and the stopper fitting slope by a vulcanization process.

8. The pressure sensor device according to claim 7, wherein the first detection passage and the second detection passage are arranged side by side in the up-down direction, and the extending direction of the communication passage is arranged perpendicular to the extending direction of the first detection passage;

the sealing structure further comprises sealing grooves formed in two sides of the first detection channel and the second detection channel, and sealing rings arranged in the sealing grooves.

9. The pressure sensor device according to any one of claims 5 to 8, wherein the communication shaft is provided with a first groove and a second groove, the first groove is used for communicating with the first detection channel, the second groove is used for communicating with the second detection channel, and the first groove and the second groove are respectively arranged on two sides of the limit boss.

10. The pressure sensor device of claim 3, wherein the positioning structure comprises a positioning groove formed on the communicating shaft, a positioning channel formed on the base, and a positioning pin sequentially penetrating through the positioning channel and the positioning groove, and a second return spring is sleeved on the positioning pin.

11. A control method of a pressure sensor device according to any one of claims 1 to 10, characterized in that the first pressure sensor is used in defining an initial state of the pressure sensor device,

the control method comprises the following steps:

s1, acquiring a medium pressure value acquired by the first pressure sensor;

s2, judging whether the medium pressure value is in a preset range;

s3, if not, generating a corresponding control signal;

and S4, controlling the power mechanism to act according to the control signal to act on the communication shaft to move, and controlling the second pressure sensor to work in an electrified mode.

12. The control method of the pressure sensor device according to claim 11, wherein the S3 includes the steps of:

s30, if not, starting timing, and judging whether the timing time is preset time or not;

s31, if the timing time is not the preset time, executing S1-S3;

and S32, if the timing time is the preset time, generating a corresponding control signal.

13. The control method of the pressure sensor device according to claim 11, characterized by further comprising the steps of:

s5, acquiring a medium pressure value acquired by the second pressure sensor;

s6, judging whether the medium pressure value is in a preset range;

s7, if not, generating a corresponding alarm signal;

and S8, sending an alarm according to the alarm signal.

Technical Field

The invention relates to the technical field of pressure sensors, in particular to a pressure sensor device and a control method.

Background

Various pressure sensors are installed on the existing marine diesel engine and used for monitoring various pressure values of the diesel engine and ensuring that various pressures of the diesel engine are within a required range, so that the reliable operation of the diesel engine is ensured. When the pressure value of the medium goes wrong, the diesel engine can send an alarm signal to prompt personnel on the ship to check the diesel engine, and if the pressure value is too low or disappears, the diesel engine can alarm and stop under the condition of not adding external control.

However, none of the conventional pressure sensors has a function of automatic switching without stopping the machine. Taking an oil pressure sensor as an example: in the running process of the ship, once the engine oil pressure sensor is damaged and cannot send an engine oil pressure signal, the ship can be shut down when external control is not added, and the ship is easy to overturn after being shut down at sea, so that irreparable loss is caused. Even if external control is carried out, the diesel engine is guaranteed not to stop, the engine oil pressure in the oil duct is high, and the pressure sensor cannot be replaced under the condition of high-pressure oil.

When the state information of the diesel engine cannot be acquired, risks exist for the operation of the diesel engine and the operation of the ship.

Disclosure of Invention

Aiming at the defects, the technical problems to be solved by the invention are as follows: a pressure sensor device and a control method are provided, which can automatically switch pressure sensors without stopping the device, thereby ensuring the operation safety of equipment such as a diesel engine using the device.

In order to solve the technical problems, the technical scheme of the invention is as follows:

a pressure sensor device comprises a base, a first pressure sensor and a second pressure sensor, wherein the first pressure sensor and the second pressure sensor are arranged on the base; a detection end of the first pressure sensor is arranged in the first detection channel; a detection end of the second pressure sensor is arranged in the second detection channel; a communicating shaft is arranged in the communicating channel, and the length of the communicating channel is greater than that of the communicating shaft; the base is further provided with a power mechanism, the power mechanism acts on the communicating shaft to move in the communicating channel so as to communicate the first detection channel with the medium inlet channel or communicate the second detection channel with the medium inlet channel, a sealing structure is arranged between the communicating shaft and the inner wall of the communicating channel, and the sealing structure seals the first detection channel and the second detection channel in an isolating mode; the device further comprises a main control unit, the main control unit is respectively electrically connected with the first pressure sensor, the second pressure sensor and the power mechanism, and the main control unit controls the power mechanism and the second pressure sensor to work according to an electric signal corresponding to the pressure of the transmission medium of the first pressure sensor.

Preferably, a limiting structure is arranged between the communicating shaft and the inner wall of the communicating channel, and the limiting structure limits the communicating shaft.

Preferably, a positioning structure is arranged between the communication shaft and the base, and the positioning structure positions the position of the communication shaft.

Preferably, the power mechanism comprises an electromagnetic coil arranged at one end of the communicating shaft, the electromagnetic coil is electrically connected with the main control unit, the main control unit energizes the electromagnetic coil, the electromagnetic coil is energized to generate a magnetic field to form an electromagnet, and the electromagnet acts on the communicating shaft to move; and a first return spring is sleeved on the side, close to the electromagnetic coil, of the communication shaft.

Preferably, the limiting structure comprises a limiting boss arranged on the communicating shaft and a limiting groove arranged on the inner wall of the communicating channel, the width of the limiting groove in the extending direction of the communicating shaft is larger than that of the limiting boss, and the limiting boss is arranged between the first detecting channel and the second detecting channel.

The optimal mode is that the top and bottom edges of the limit boss are both set to be 45-degree limit inclined planes, and the notch of the limit groove is provided with a limit matching inclined plane matched with the limit inclined plane.

Preferably, the sealing structure is a sealing rubber layer arranged on the limit inclined plane and the limit matching inclined plane through a vulcanization process.

Preferably, the first detection channel and the second detection channel are arranged side by side up and down, and the extension direction of the communication channel is perpendicular to the extension direction of the first detection channel; the sealing structure further comprises sealing grooves formed in two sides of the first detection channel and the second detection channel, and sealing rings arranged in the sealing grooves.

Preferably, the communicating shaft is provided with a first groove and a second groove, the first groove is used for being communicated with the first detection channel, the second groove is used for being communicated with the second detection channel, and the first groove and the second groove are respectively arranged on two sides of the limiting boss.

The preferred mode does, location structure is including establishing constant head tank on the intercommunication axle, establishing location passageway on the base and running through in proper order the location passageway with the locating pin of constant head tank, just the cover is equipped with second return spring on the locating pin, second return spring establishes in the location passageway.

A control method of the pressure sensor device defines that the first pressure sensor is used in the initial state of the pressure sensor device,

the control method comprises the following steps:

s1, acquiring a medium pressure value acquired by the first pressure sensor;

s2, judging whether the medium pressure value is in a preset range;

s3, if not, generating a corresponding control signal;

and S4, controlling the power mechanism to act according to the control signal to act on the communication shaft to move, and controlling the second pressure sensor to work in an electrified mode.

Preferably, the S3 includes the following steps:

s30, if not, starting timing, and judging whether the timing time is preset time or not;

s31, if the timing time is not the preset time, executing S1-S3;

and S32, if the timing time is the preset time, generating a corresponding control signal.

Preferably, the method further comprises the following steps:

s5, acquiring a medium pressure value acquired by the second pressure sensor;

s6, judging whether the medium pressure value is in a preset range;

s7, if not, generating a corresponding alarm signal;

and S8, sending an alarm according to the alarm signal.

After the technical scheme is adopted, the invention has the beneficial effects that:

the pressure sensor device comprises a base, a first pressure sensor, a second pressure sensor, a power mechanism, a communicating shaft and a main control unit, wherein the base is provided with a first detection channel, a second detection channel, a communicating channel and a medium inlet channel, the first pressure sensor is arranged in the first detection channel, the second pressure sensor is arranged in the second detection channel, and the communicating shaft is arranged in the communicating channel. Under the initial state, first detection channel, intercommunication passageway and medium entering channel intercommunication, the first pressure sensor of definition comes into operation, first pressure sensor gathers the medium pressure value, when the medium pressure value is not at preset scope, show that first pressure sensor breaks down, main control unit control second pressure sensor comes into operation this moment, control power unit action goes to act on the intercommunication axle and removes, make second detection channel, intercommunication passageway and medium entering channel intercommunication, realize accomplishing pressure sensor's switching under the condition of not shutting down. Therefore, when the pressure sensor has a fault, the invention can realize non-stop switching, and ensure the running safety of equipment applying the invention, such as a diesel engine.

Because the limiting structure is arranged between the communicating shaft and the inner wall of the communicating channel, the communicating shaft is limited by the limiting structure, and the communicating shaft can move reliably.

Because the positioning structure is arranged between the communicating shaft and the base, the positioning structure positions the communicating shaft, and the position is fixed after the communicating shaft moves.

Because limit structure is including establishing the spacing boss on the intercommunication axle, and establishing the spacing groove on the intercommunication passageway inner wall, the width in spacing groove is greater than the width of spacing boss on intercommunication axle extending direction, and spacing boss establishes between first detection channel and second detection channel, makes the removal of intercommunication axle, can reliably switch the medium circulation passageway.

Because the top and bottom edges of the limiting boss are both set to be 45-degree limiting inclined planes, and the notch of the limiting groove is provided with a limiting matching inclined plane matched with the limiting inclined plane, the structure is simple, and reliable limiting is realized.

The sealing structure is a sealing rubber layer arranged on the limiting inclined plane and the limiting matching inclined plane through a vulcanization process, so that the first detection channel and the second detection channel are reliably sealed and isolated.

The first detection channel and the second detection channel are arranged side by side up and down, and the extension direction of the communication channel is vertical to the extension direction of the first detection channel; the sealing structure further comprises sealing grooves formed in two sides of the first detection channel and the second detection channel, and sealing rings arranged in the sealing grooves, and the medium circulation channels are reliably sealed and isolated.

Because location structure is including establishing the constant head tank on the intercommunication axle, establishing the location passageway on the base, and run through the locating pin of location passageway and constant head tank in proper order, and the cover is equipped with second return spring on the locating pin, and second return spring establishes in the location passageway, guarantees that the intercommunication axle can not remove at will after solenoid loses the electricity, the change of the first pressure sensor of being convenient for.

In summary, the pressure sensor device and the control method of the invention solve the potential safety hazard caused by pressure sensor failure, shutdown replacement, maintenance and the like in the prior art, and the invention can complete automatic switching of the communicating shaft, the power mechanism and the like of the two pressure sensors by arranging the two pressure sensors, so that equipment such as a diesel engine and the like can obtain the required pressure value and can automatically switch the pressure sensors without shutdown, thereby ensuring reliable and safe operation.

Drawings

FIG. 1 is a cross-sectional view of an inventive intermediate pressure sensor apparatus in an initial state;

FIG. 2 is a cross-sectional view of the pressure sensor apparatus of the present invention after automatic switching;

FIG. 3 is a cross-sectional view of another angle of the pressure sensor apparatus of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 at A;

FIG. 5 is a schematic flow diagram of the present invention;

in the figure: 1-base, 10-medium inlet channel, 11-first detection channel, 12-second detection channel, 13-sealing groove, 14-limit matching inclined plane, 15-communicating channel, 150-limit groove, 2-first pressure sensor, 3-second pressure sensor, 4-communicating shaft, 40-first groove, 41-second groove, 42-limit boss, 420-limit inclined plane, 44-positioning groove, 5-electromagnetic coil, 60-first return spring, 62-second return spring, 70-first sealing ring, 72-second sealing ring and 8-positioning pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.