CN201476930U - Electronic micro-airflow pressure sensor - Google Patents
Electronic micro-airflow pressure sensor Download PDFInfo
- Publication number
- CN201476930U CN201476930U CN2009202341999U CN200920234199U CN201476930U CN 201476930 U CN201476930 U CN 201476930U CN 2009202341999 U CN2009202341999 U CN 2009202341999U CN 200920234199 U CN200920234199 U CN 200920234199U CN 201476930 U CN201476930 U CN 201476930U
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- pressure sensor
- way pipe
- communicates
- pipe
- gas
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Abstract
Disclosed is an electronic micro-airflow pressure sensor. The sensor is characterized by mainly comprising a long strip flexible gasbag (1), a gas guide pipe (2), a tee pipe (3) and a differential pressure type electronic air pressure sensor (4), one end of the gas guide pipe (2) is communicated with an air chamber of the long strip flexible gasbag (1), the other end of the gas-guide pipe (2) is communicated with a gas inlet end of the tee pipe (3), one gas outlet end of the tee pipe (3) is communicated with atmosphere, and the other gas outlet end of the tee pipe (3) is communicated with a gas inlet end of the differential pressure type electronic air pressure sensor (4). The pressure sensor is simple in structure, not easy to be damaged and unable to generate error signals, and has the remarkable advantages of low cost, long service life and safe and reliable properties.
Description
Technical field
The utility model relates to a kind of pressure transducer, the electronic pressure sensor that uses in especially a kind of driver's examination system, the specifically a kind of electronics stream pressure sensor that declines.
Background technology
In the automobile driver system of computer test, the frequent requirement that need whether press the sideline during detection vehicle ', press the protruding point.This just need bury corresponding pressure-detecting device underground on road, pressure transducer commonly used has two kinds of mechanical type and electronic types: the mechanical compression sensor is long-term can to occur phenomenons such as reed fatigue, dust is stuck after using, at present drive that the field of examining progressively eliminates need not.And common electrical minor baroceptor is the method that detects totally-enclosed space internal gas pressure owing to what adopt, can produce error signal when when gases are heated, they expand or meet cold contraction, and when being subjected to can causing testing agency's permanent damages when pushing rapidly energetically.
Summary of the invention
The purpose of this utility model is short with the mechanical sensor life-span at existing motor vehicles road examination, easily produce mechanical fatigue, and that electronic sensor exists is influenced by ambient temperature big, insecure problem of working, design a kind of not influenced by ambient temperature, the electronics of the good pressure-resistant performance stream pressure sensor that declines.
The technical solution of the utility model is:
A kind of electronics stream pressure sensor that declines, it is characterized in that it mainly is made up of strip flexible air-bag 1, wireway 2, three-way pipe 3 and differential electron gas pressure sensor 4, one end of wireway 2 communicates with the air chamber of strip flexible air-bag 1, the other end communicates with the inlet end of three-way pipe 3, an outlet side of three-way pipe 3 communicates with atmosphere, and another outlet side communicates with the inlet end of differential electron gas pressure sensor 4.
On the end that described three-way pipe 3 communicates with atmosphere, restriction device 5 is installed.
Described restriction device 5 is a plastic cement pipe with holes, and its end is sleeved on the three-way pipe 3, and the other end is provided with breeder tube.
The beneficial effects of the utility model are:
The utility model can be used in the driving efficiency examination system of motor vehicle place, use the hollow rubber pipe as flexible air-bag, be laid on the place that needs to detect vehicle pressure point line ball, for the examination of motor vehicle place provides a kind of low cost, the line ball pressure point detection mode of higher reliability also can be used for the application scenario that other any needs detect the trickle deflection of flexible air-bag; The mode that the utility model takes differential electron gas pressure sensor to detect the small air pressure change in three-way pipe position is come the pressure point and the line ball of machines motor-car.Be different from the method that common electrical minor baroceptor detects totally-enclosed space internal gas pressure, the utility model three-way pipe has an end to communicate by restriction device and ambient atmosphere, can prevent effectively that air bag is subjected to pushing energetically meeting and damages situation to testing agency.Because the effect of the three-way pipe that communicates with atmosphere is arranged, volumetric expansion when gas is heated, unnecessary gas is got rid of by three-way pipe, volume reduced when gas was caught a cold, not enough gas is by the three-way pipe inspiration, can remain the balance of air bag inner and outer air pressure, prevent that closed balloon detection mode is subjected to extraneous cold and hot the influence, the air pressure of the detection phenomenon that changes.With respect to mechanical little pneumatic sensor, owing to use the detection method of electronic type, there is not the tired wild effect such as stuck of reed.With the mode of using special-purpose little airflow sensor chip relatively, have with low cost, the advantage that is easy to realize.
The utility model is simple in structure, and is not fragile, can not produce error signal, and it is low to have a cost, and the life-span is long, safe and reliable outstanding advantage.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a differential electron gas pressure sensor circuit diagram of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, 2.
A kind of electronics stream pressure sensor that declines, it mainly is made up of strip flexible air-bag 1, wireway 2, three-way pipe 3 and differential electron gas pressure sensor 4, as shown in Figure 1, one end of wireway 2 communicates with the air chamber of strip flexible air-bag 1, the other end communicates with the inlet end of three-way pipe 3, an outlet side of three-way pipe 3 communicates with atmosphere, and another outlet side communicates with the inlet end of differential electron gas pressure sensor 4.In order to improve sensitivity a restriction device 5 can be installed on the end that three-way pipe 3 communicates with atmosphere.Restriction device 5 can adopt plastic cement pipe with holes, and its end is sleeved on the three-way pipe 3, and the other end is provided with breeder tube.When the air bag extrusion, three-way pipe has the air flow stream mistake, and sensor circuit (as Fig. 2) detects the poor of three-way pipe intersection's gaseous tension and atmospheric pressure, signal is amplified and processing output detection signal, pilot balloon extrusion by circuit.
During concrete enforcement, can use the hollow rubber pipe of strip to be laid on the road surface that needs to detect as flexible air-bag 1, the hollow rubber pipe links to each other with three-way pipe by wireway, the differential electron gas pressure sensor of the other two ends of three-way pipe one termination, one end and atmosphere communicate, an end that communicates with atmosphere is installed restriction device and is improved detection sensitivity, can use a narrow meshed plastic parts to be installed in exhausr port as restriction device when specifically implementing.After vehicle rolls rubber tube, make rubber tube produce distortion, gas in the rubber tube is discharged by three-way pipe through wireway, in gas discharge process, the air pressure at three-way pipe place changes, differential electron gas pressure sensor detects air pressure change, and the sensor output signal indication is current to have vehicle to roll the hollow rubber pipe.
Principle of work of the present utility model:
When air bag is subjected to external force deformation, can discharge or suck air by three-way pipe, cause three-way pipe tracheae intersection air pressure change simultaneously, air pressure and atmospheric pressure reduction that the electronic type baroceptor detects in the three-way pipe change, output signal after treatment, pilot balloon is subjected to external force to produce distortion, thereby makes the judgement of vehicle pressure point line ball.
The utility model does not relate to the part prior art that maybe can adopt same as the prior art to be realized.
Claims (3)
1. electronics stream pressure sensor that declines, it is characterized in that it mainly is made up of strip flexible air-bag (1), wireway (2), three-way pipe (3) and differential electron gas pressure sensor (4), one end of wireway (2) communicates with the air chamber of strip flexible air-bag (1), the other end communicates with the inlet end of three-way pipe (3), an outlet side of three-way pipe (3) communicates with atmosphere, and another outlet side communicates with the inlet end of differential electron gas pressure sensor (4).
2. the electronics according to claim 1 stream pressure sensor that declines is characterized in that being equipped with restriction device (5) on the end that described three-way pipe (3) communicates with atmosphere.
3. the electronics according to claim 2 stream pressure sensor that declines is characterized in that described restriction device (5) is a plastic cement pipe with holes, and its end is sleeved on the three-way pipe (3), and the other end is provided with breeder tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202341999U CN201476930U (en) | 2009-08-12 | 2009-08-12 | Electronic micro-airflow pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202341999U CN201476930U (en) | 2009-08-12 | 2009-08-12 | Electronic micro-airflow pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201476930U true CN201476930U (en) | 2010-05-19 |
Family
ID=42413181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202341999U Expired - Lifetime CN201476930U (en) | 2009-08-12 | 2009-08-12 | Electronic micro-airflow pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201476930U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629426A (en) * | 2012-04-20 | 2012-08-08 | 北京精英智通交通系统科技有限公司 | Self-checking method and self-checking system of side line crossing signal |
| CN103674410A (en) * | 2012-09-26 | 2014-03-26 | 中国科学院光电研究院 | Differential pressure measuring device and method |
| CN107103814A (en) * | 2017-02-28 | 2017-08-29 | 广州地理研究所 | A kind of reversing storage checking system and its application process based on vehicle electron identifying |
| CN110236504A (en) * | 2019-07-01 | 2019-09-17 | 天津工业大学 | A kind of flexibility sensing element and breathing and heartbeat sensor using it |
-
2009
- 2009-08-12 CN CN2009202341999U patent/CN201476930U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629426A (en) * | 2012-04-20 | 2012-08-08 | 北京精英智通交通系统科技有限公司 | Self-checking method and self-checking system of side line crossing signal |
| CN103674410A (en) * | 2012-09-26 | 2014-03-26 | 中国科学院光电研究院 | Differential pressure measuring device and method |
| CN103674410B (en) * | 2012-09-26 | 2016-10-12 | 中国科学院光电研究院 | Differential pressure measurement device and method |
| CN107103814A (en) * | 2017-02-28 | 2017-08-29 | 广州地理研究所 | A kind of reversing storage checking system and its application process based on vehicle electron identifying |
| CN110236504A (en) * | 2019-07-01 | 2019-09-17 | 天津工业大学 | A kind of flexibility sensing element and breathing and heartbeat sensor using it |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: NANJING DORON TECHNOLOGY CO., LTD. Free format text: FORMER NAME: DUOLUN SCIENCE AND TECHNOLOGY CO., LTD., NANJING |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 211100 No. 1555 Tian Yin Road, Jiangning District, Jiangsu, Nanjing Patentee after: NANJING DORON TECHNOLOGY CO., LTD. Address before: 211100 No. 1555 Tian Yin Road, Jiangning District, Jiangsu, Nanjing Patentee before: Nanjing Doron Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 211100 No. 1555 Tian Yin Road, Jiangning District, Jiangsu, Nanjing Patentee after: Duolun Polytron Technologies Inc Address before: 211100 No. 1555 Tian Yin Road, Jiangning District, Jiangsu, Nanjing Patentee before: NANJING DORON TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100519 |
|
| CX01 | Expiry of patent term |