CN213022090U - Isolated film type pressure sensor - Google Patents
Isolated film type pressure sensor Download PDFInfo
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- CN213022090U CN213022090U CN202022087789.2U CN202022087789U CN213022090U CN 213022090 U CN213022090 U CN 213022090U CN 202022087789 U CN202022087789 U CN 202022087789U CN 213022090 U CN213022090 U CN 213022090U
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- circuit board
- pressure sensor
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- cable
- pressure
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Abstract
The utility model relates to the technical field of pressure sensors, in particular to an isolated film type pressure sensor, which comprises an end shell and a cable shell connected with the end shell, wherein the peripheral side of the end shell is provided with an isolating film, the end shell inside the isolating film is sequentially provided with a conducting liquid, an air bag, a pressure sensitive element and a circuit board, the cable shell is internally provided with a cable, the circuit board is electrically connected with the cable, the air bag is arranged between the conducting liquid and the circuit board, the bottom of the air bag is connected with an air pipe, the air bag can be conveniently inflated through the air pipe, the performance of the circuit board can be conveniently detected, the isolating film is annular and is fixedly connected with the peripheral side of the end shell, the isolating film fixedly connected with the peripheral side of the end shell can detect the pressure intensity in the direction of 360 degrees at the same depth position in the environment, the applicability is strong.
Description
Technical Field
The utility model relates to a pressure sensor technical field, in particular to diaphragm type pressure sensor.
Background
The core body of the isolating membrane type pressure sensor at the present stage is a membrane, the stainless steel membrane is matched with silicon oil, and then the isolating membrane type pressure sensor is connected with an electric bridge, after the membrane is contacted with liquid to be detected, the membrane can generate deformation, the silicon oil is used for conducting, so that the electric bridge changes to generate a current change, a standard current or voltage signal is formed after amplification processing, and then the current or voltage signal is converted into a pressure value.
At present, the diaphragm type pressure sensors produced in a workshop can be stored in a unified mode to be in stock before being sold, and some diaphragm type pressure sensors cannot determine the quality of the diaphragm type pressure sensors during the sale, so that the diaphragm type pressure sensors need to be detected, but the diaphragm portions of the diaphragm type pressure sensors in the stock are generally packaged and protected, so that the quality of products cannot be determined easily for the diaphragm type pressure sensors.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an isolated film formula pressure sensor to solve the present isolated film formula pressure sensor that produces in the workshop that proposes in the above-mentioned background art and can unify to deposit before selling and become the stock, some isolated film formula pressure sensors can not confirm its problem of quality when selling.
In order to achieve the above object, the utility model provides a following technical scheme: including the tip casing and with the cable casing that the tip casing is connected, the week side of tip casing is provided with the barrier film, the barrier film is inboard the inside of tip casing has set gradually conduction liquid, gasbag, pressure sensitive element and circuit board, be provided with the cable conductor in the cable casing, the circuit board electricity is connected the cable conductor.
Preferably, the separator is annular and is fixedly attached to the peripheral side of the end housing.
Preferably, the air bag is also of a ring structure, and the air bag is wrapped on the outer side of the circuit board.
Preferably, an air tube is connected to the bottom of the air bag, one end of the air tube extends through the end shell to the outside of the end shell, and a closing cover is connected to the end of the air tube.
Preferably, the circuit board is installed at a central position in the end portion shell, a pressure-sensitive element is connected between the circuit board and the air bag, and the pressure-sensitive element is connected with a pressure measuring circuit in the circuit board.
Preferably, the pressure sensitive element is a varistor.
The utility model discloses a technological effect and advantage:
the air bag is arranged between the conducting liquid and the circuit board, the air pipe is connected to the bottom of the air bag, the air bag can be conveniently inflated through the air pipe, the performance of the circuit board can be conveniently detected, the isolation film is annular and fixedly connected to the peripheral side of the end shell, the isolation film fixedly connected to the peripheral side of the end shell can detect the pressure intensity of 360 degrees in the environment at the same depth position, the detection range is large, and the applicability is strong.
Drawings
Fig. 1 is a sectional view of the structure of the present invention.
Fig. 2 is a schematic structural view of the local structure of the present invention.
Fig. 3 is a schematic view of the overall structure of the present invention.
Fig. 4 is a schematic structural view of the air bag of the present invention when it is deflated.
In the figure: 1. an end housing; 2. a cable housing; 3. an isolation film; 4. a conductive liquid; 5. an air bag; 6. a pressure sensitive element; 7. a circuit board; 8. a cable wire; 9. an air tube; 10. and (6) closing the cover.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution:
an isolating membrane type pressure sensor comprises an end shell 1 and a cable shell 2 connected with the end shell 1, wherein an isolating membrane 3 is arranged on the peripheral side face of the end shell 1, a conducting liquid 4, an air bag 5, a pressure-sensitive element 6 and a circuit board 7 are sequentially arranged inside the end shell 1 on the inner side of the isolating membrane 3, a cable 8 is arranged in the cable shell 2, and the circuit board 7 is electrically connected with the cable 8.
In this embodiment, the isolation diaphragm 3 is annular and is fixedly connected to the peripheral side of the end casing 1, and the isolation diaphragm 3 fixedly connected to the peripheral side of the end casing 1 can detect the pressure in the 360 ° direction at the same depth position in the environment, and the detection range is wide.
In this embodiment, the air bag 5 is also in a ring structure, the air bag 5 is wrapped on the outer side of the circuit board 7, the air bag 5 in the ring structure is wrapped on the outer side of the circuit board 7, direct contact between the conductive oil and the circuit board 7 is avoided, and the arrangement of the air bag 5 can also provide a certain buffering effect for the circuit board 7 and the pressure sensitive element 6 arranged on the side surface of the circuit board 7.
In this embodiment, a gas tube 9 is connected to the bottom of the air bag 5, one end of the gas tube 9 extends through the end casing 1 to the outside of the end casing 1, a sealing cap 10 is connected to the end of the gas tube 9, wherein the inner side surface of the sealing cap 10 and the outer side surface of the end of the gas tube 9 are both provided with threads, and the sealing cap 10 is connected to the end of the gas tube 9 through threads.
In this embodiment, the circuit board 7 is installed at a central position in the end housing 1, the pressure sensitive element 6 is connected between the circuit board 7 and the airbag 5, the pressure sensitive element 6 is connected with a pressure measuring circuit in the circuit board 7, the pressure sensitive element 6 is a pressure sensitive resistor, and the airbag 5 can provide a certain buffer effect for the pressure sensitive element 6 and the circuit board 7, so that the structural stability of the pressure sensitive element 6 and the circuit board 7 is protected, and the service life is prolonged.
In the practical of the utility model discloses an isolated film formula pressure sensor, certain rocking can appear when monitoring pressure and produce certain influence to isolated film formula pressure sensor, for example when detecting liquid pressure, some liquid is to 3 position departments of barrier film production impact, this part impact force transmits to piezo-resistor and circuit board 7 departments, gasbag 5 at this moment can provide better cushioning effect for piezo-element 6 and circuit board 7, protect the stability that piezo-element 6 and circuit board 7 and tip casing 1 are connected, prolong holistic life.
When diaphragm type pressure sensor goes out of warehouse, when need detecting it well or not, can take off closing cap 10 from the one end of trachea 9, then connect trachea 9 through the air pump, then aerify gasbag 5, be connected cable conductor 8 and outside check out test set again, can realize the detection to the good or not of 7 performances of internal circuit board, easy operation, the practicality is stronger.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.
Claims (6)
1. An isolated film pressure sensor, comprising: including tip casing (1) and with cable casing (2) that tip casing (1) is connected, the week side of tip casing (1) is provided with barrier film (3), barrier film (3) inboard the inside of tip casing (1) has set gradually conduction liquid (4), gasbag (5), pressure sensitive element (6) and circuit board (7), be provided with cable conductor (8) in cable casing (2), circuit board (7) electricity is connected cable conductor (8).
2. The isolated film pressure sensor of claim 1, wherein: the isolation film (3) is annular and is fixedly connected to the peripheral side of the end housing (1).
3. The isolated film pressure sensor of claim 2, wherein: the air bag (5) is also of an annular structure, and the air bag (5) is wrapped on the outer side of the circuit board (7).
4. The isolated film pressure sensor of claim 3, wherein: the bottom of gasbag (5) is connected with an trachea (9), the one end of trachea (9) is run through tip casing (1) extends to the outside of tip casing (1), the end connection of trachea (9) has closing cap (10).
5. The isolated film pressure sensor of claim 1, wherein: the circuit board (7) is installed at the central position in the end part shell (1), a pressure-sensitive element (6) is connected between the circuit board (7) and the air bag (5), and the pressure-sensitive element (6) is connected with a pressure measuring circuit in the circuit board (7).
6. The isolated film pressure sensor of claim 5, wherein: the pressure-sensitive element (6) is a piezoresistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022087789.2U CN213022090U (en) | 2020-09-22 | 2020-09-22 | Isolated film type pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022087789.2U CN213022090U (en) | 2020-09-22 | 2020-09-22 | Isolated film type pressure sensor |
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| Publication Number | Publication Date |
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| CN213022090U true CN213022090U (en) | 2021-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022087789.2U Active CN213022090U (en) | 2020-09-22 | 2020-09-22 | Isolated film type pressure sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483930A (en) * | 2021-06-28 | 2021-10-08 | 北京京东乾石科技有限公司 | Collision detection device, split type distribution robot and collision detection method |
| CN116105966A (en) * | 2023-04-12 | 2023-05-12 | 中国空气动力研究与发展中心低速空气动力研究所 | Device and method for fixing internal lead of blade model surface pressure sensor |
-
2020
- 2020-09-22 CN CN202022087789.2U patent/CN213022090U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113483930A (en) * | 2021-06-28 | 2021-10-08 | 北京京东乾石科技有限公司 | Collision detection device, split type distribution robot and collision detection method |
| CN113483930B (en) * | 2021-06-28 | 2023-08-04 | 北京京东乾石科技有限公司 | Collision detection device, split-type dispensing robot, and collision detection method |
| CN116105966A (en) * | 2023-04-12 | 2023-05-12 | 中国空气动力研究与发展中心低速空气动力研究所 | Device and method for fixing internal lead of blade model surface pressure sensor |
| CN116105966B (en) * | 2023-04-12 | 2023-06-13 | 中国空气动力研究与发展中心低速空气动力研究所 | Device and method for fixing internal lead of blade model surface pressure sensor |
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Effective date of registration: 20220119 Address after: 201422 room 1123, building 94, No. 4399, Wusi highway, Haiwan Town, Fengxian District, Shanghai Patentee after: Shanghai Xilu Automation Technology Co.,Ltd. Address before: 201199 room c1116, 1st floor, building 1, 1755 Hongmei South Road, Minhang District, Shanghai Patentee before: Shanchuang industry (Shanghai) Co.,Ltd. |