CN216309304U - Electronic pressure sensor - Google Patents
Electronic pressure sensor Download PDFInfo
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- CN216309304U CN216309304U CN202122622302.0U CN202122622302U CN216309304U CN 216309304 U CN216309304 U CN 216309304U CN 202122622302 U CN202122622302 U CN 202122622302U CN 216309304 U CN216309304 U CN 216309304U
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- pressure
- pneumatic seat
- pressure sensing
- sensing assembly
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Abstract
The utility model discloses an electronic pressure sensor, comprising: a housing; the base and the pressure sensing assembly are arranged in the shell; the pins are arranged on two sides of the pressure sensing assembly; the pressure leading-in pipe is arranged outside the shell and communicated with the pressure channel of the base; the pressure sensing assembly is internally provided with a pressure sensing sheet, a pneumatic seat, a diaphragm and a pressure resistor; the pneumatic seat is arranged on the pressure sensing assembly, the pneumatic seat plays a role in controlling flexibility, the annular air cavity can enable airflow to be uniformly distributed, the pneumatic seat is uniformly expanded to uniformly apply pressure to the pressure resistor, the guide post and the pressure channel are matched to form a certain friction force, the guide post is pushed by the airflow to be more stable, and the air guide groove can control the flow rate of the airflow flowing into the annular air cavity, so that the pneumatic seat is more stably pressed, and the resistance value of the pressure resistor is more stably changed.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to an electronic pressure sensor.
Background
The pressure sensor is the most common sensor in industrial practice, is widely applied to various industrial automatic control environments, and relates to a plurality of industries such as water conservancy and hydropower, railway traffic, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and the like.
Due to the structural design, the sensitivity of the sensor applied to the air pressure measurement is different, some sensors are more sensitive, the fluctuation of measured data is larger, and the sensitivity is not linear enough in practical application.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides an electronic pressure sensor, which solves the problem of the prior art that the sensitivity of the sensor is not linear enough.
In order to solve the above technical problem, the present invention discloses an electronic pressure sensor, including: a housing; the base and the pressure sensing assembly are arranged in the shell; the pins are arranged on two sides of the pressure sensing assembly; the pressure leading-in pipe is arranged outside the shell and communicated with the pressure channel of the base; the pressure sensing assembly is internally provided with a pressure sensing piece, a pneumatic seat, a diaphragm and pressure resistors, the diaphragm is arranged at the top in the pressure sensing assembly, the pressure resistors are distributed on the diaphragm, the pressure sensing piece is arranged at the top of the pneumatic seat, the pneumatic seat is arranged at the lower part of the diaphragm, the edge of the pneumatic seat is fixed on the edge of one end of the base, and a guide column on the pneumatic seat is arranged in a pressure channel; the edge of the pneumatic seat is in a folded shape, and one side of the pneumatic seat is provided with an annular air cavity; the guide post is positioned in the middle of the pneumatic seat, and the side wall of the guide post is provided with an air guide groove.
Furthermore, the pressure sensing assembly and the base are circular.
Furthermore, the piezoresistors are arranged in a ring shape and at least arranged into two groups of ring-shaped rings.
Furthermore, the side wall of the guide column is provided with three air guide grooves which are distributed at intervals.
Compared with the prior art, the application can obtain the following technical effects:
the utility model arranges a pneumatic seat in a pressure sensing assembly, a guide post of the pneumatic seat is arranged in a pressure channel, the edge of the pneumatic seat is in a fold shape and is connected with the edge of a base, when the gas pressure in a tank body gradually increases, the gas flow enters the pressure channel and flows into an annular gas cavity from a gas guide groove on the guide post, so that the pneumatic seat slowly swells, a pressure sensing sheet arranged on the pneumatic seat slowly presses a pressure resistor, when the gas pressure in the tank body reaches the maximum, the gas flow pushes the guide post, so that the pressure sensing sheet on the pneumatic seat exerts the maximum pressure on the pressure resistor, the resistance value of the pressure resistor changes due to the piezoelectric resistance effect, the pneumatic seat plays a role of controlling the flexibility, the annular gas cavity can make the gas flow uniformly distributed, the pneumatic seat uniformly swells and uniformly presses the pressure resistor, the guide post and the pressure channel are matched to form a certain friction force, and the guide post is pushed by the gas flow more stably, the air guide groove can control the flow rate of air flow flowing into the annular air cavity, so that the pneumatic base is more stably pressed, and the resistance value of the pressure resistor is more stably changed.
Of course, it is not necessary for any one product to achieve all of the above-described technical effects simultaneously.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a pressure sensor in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of a pressure sensing assembly according to an embodiment of the present invention.
Reference symbols of the drawings
The pressure sensor comprises a shell 1, a base 2, a pressure sensing assembly 3, a pin 4, a pressure channel 5, a pressure inlet pipe 6, a pressure sensing sheet 7, a pneumatic seat 8, a diaphragm 9, a pressure resistor 10, a guide column 11, an annular air cavity 12 and an air guide groove 13.
Detailed Description
Embodiments of the present application will be described in detail with reference to the drawings and examples, so that how to implement technical means to solve technical problems and achieve technical effects of the present application can be fully understood and implemented.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of a pressure sensor according to an embodiment of the utility model; FIG. 2 is a schematic view of a pressure sensing assembly according to an embodiment of the present invention. An electronic pressure sensor comprising: a housing 1; the base 2 and the pressure sensing component 3 are arranged in the shell 1; the pins 4 are arranged on two sides of the pressure sensing component 3; a pressure introduction pipe 6 provided outside the housing 1 and communicating with the pressure passage 5 of the base 2; the pressure sensing assembly 3 is internally provided with a pressure sensing piece 7, a pneumatic seat 8, a diaphragm 9 and pressure resistors 10, the diaphragm 9 is arranged at the top in the pressure sensing assembly 3, the pressure resistors 10 are distributed on the diaphragm 9, the pressure sensing piece 7 is arranged at the top of the pneumatic seat 8, the pneumatic seat 8 is positioned at the lower part of the diaphragm 9, the edge of the pneumatic seat 8 is fixed on the edge of one end of the base 2, and a guide column 11 on the pneumatic seat 8 is arranged in the pressure channel 5; the edge of the pneumatic seat 8 is in a folded shape, and one side of the pneumatic seat is provided with an annular air cavity 12; the guide post 11 is located in the middle of the pneumatic seat 8, and the side wall of the guide post is provided with a gas guide groove 13.
The pressure sensing component 3 and the base 2 are circular; the piezoresistors 10 are annularly arranged and at least arranged into two groups of annular rings; the side wall of the guide post 11 is provided with three air guide grooves 13 which are distributed at intervals.
The pressure sensing assembly 3 is connected with the base 2, the air flow enters from the pressure inlet pipe 6 and flows into the pressure channel 5, the air flow flows into the annular air cavity 12 of the pneumatic seat 8 through the air guide groove 13, the annular air cavity 12 is full of the air flow and overflows, the air flow pushes the guide post 11 at the moment, along with the increase of the air flow pressure, the pressure applied to the pressure resistor 10 by the pneumatic seat 8 is larger, and the resistance value of the pressure resistor 10 is larger along with the increase of the pressure.
The utility model arranges a pneumatic seat 8 on a pressure sensing component 3, a guide post 11 of the pneumatic seat 8 is arranged in a pressure channel 5, the edge of the pneumatic seat 8 is in a fold shape and is connected with the edge of a base 2, when the gas pressure in a tank body gradually increases, the gas flow enters the pressure channel 5 and flows into an annular gas cavity 12 from a gas guide groove 13 on the guide post 11, so that the pneumatic seat 8 slowly swells, a pressure sensing sheet 7 arranged on the pneumatic seat 8 slowly applies pressure on a pressure resistor 10, when the gas pressure in the tank body reaches the maximum, the gas flow can push the guide post 11, so that the pressure sensing sheet 7 on the pneumatic seat 8 applies the maximum pressure on the pressure resistor 10, because of the piezoelectric resistance effect, the resistance value of the pressure resistor 10 changes, the pneumatic seat 8 plays a role of controlling the flexibility, the annular gas cavity 12 can make the gas flow uniformly distributed, the pneumatic seat 8 uniformly swells and applies pressure on the pressure resistor 10 uniformly, the guide post 11 and the pressure channel 5 are matched to form a certain friction force, the guide post 11 is pushed by the airflow to be stable, and the air guide groove 13 can control the flow rate of the airflow flowing into the annular air cavity 12, so that the pneumatic seat 8 is pressed more stably, and the resistance value of the pressure resistor 10 is changed more stably.
While the foregoing description shows and describes several preferred embodiments of the utility model, it is to be understood, as noted above, that the utility model is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (4)
1. An electronic pressure sensor comprising: a housing; the base and the pressure sensing assembly are arranged in the shell; the pins are arranged on two sides of the pressure sensing assembly; the pressure leading-in pipe is arranged outside the shell and communicated with the pressure channel of the base;
the pressure sensing assembly is characterized in that a pressure sensing piece, a pneumatic seat, a diaphragm and pressure resistors are arranged in the pressure sensing assembly, the diaphragm is arranged at the top in the pressure sensing assembly, the pressure resistors are distributed on the diaphragm, the pressure sensing piece is arranged at the top of the pneumatic seat, the pneumatic seat is arranged at the lower part of the diaphragm, the edge of the pneumatic seat is fixed on the edge of one end of the base, and a guide column on the pneumatic seat is arranged in the pressure channel; the edge of the pneumatic seat is in a folded shape, and one side of the pneumatic seat is provided with an annular air cavity; the guide post is positioned in the middle of the pneumatic seat, and the side wall of the guide post is provided with an air guide groove.
2. The electronic pressure sensor of claim 1, wherein the pressure sensing component is circular in shape with the base.
3. The electronic pressure sensor of claim 1, wherein a plurality of said piezoresistors are arranged in a ring and arranged in at least two sets of annular rings.
4. The electronic pressure sensor of claim 1, wherein the side wall of the guide post is provided with three spaced apart air guide slots.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122622302.0U CN216309304U (en) | 2021-10-29 | 2021-10-29 | Electronic pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122622302.0U CN216309304U (en) | 2021-10-29 | 2021-10-29 | Electronic pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216309304U true CN216309304U (en) | 2022-04-15 |
Family
ID=81117339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122622302.0U Active CN216309304U (en) | 2021-10-29 | 2021-10-29 | Electronic pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216309304U (en) |
-
2021
- 2021-10-29 CN CN202122622302.0U patent/CN216309304U/en active Active
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