CN201340320Y - Vehicle pressure sensor - Google Patents
Vehicle pressure sensor Download PDFInfo
- Publication number
- CN201340320Y CN201340320Y CNU2008201674887U CN200820167488U CN201340320Y CN 201340320 Y CN201340320 Y CN 201340320Y CN U2008201674887 U CNU2008201674887 U CN U2008201674887U CN 200820167488 U CN200820167488 U CN 200820167488U CN 201340320 Y CN201340320 Y CN 201340320Y
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- pressure
- sensing device
- sensor housing
- signal
- automobile
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- Expired - Fee Related
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Abstract
The utility model relates to a vehicle pressure sensor, which comprises a sensor shell, a pressure-sensitive element, a signal conditioning PCB and an output electrical connector of a conditioning signal, wherein the signal conditioning PCB is connected with the pressure-sensitive element and used for conditioning a pressure signal of the pressure-sensitive element; the output of the signal conditioning PCB is led out by the output electrical connector of the conditioning signal; the front end of the sensor shell is provided with a pressure lead-in hole; the inside of the sensor shell is of a deep groove hollow structure; and the pressure-sensitive element is arranged inside the sensor shell and the pressure sensitive surface of the pressure-sensitive element is opposite to the pressure lead-in hole. The vehicle pressure sensor is characterized in that the pressure-sensitive element has a silicon-pressure stainless steel isolating film oil-filled structure. Compared with the prior art, the utility model has the advantages that: the pressure-sensitive element adopts the silicon-pressure stainless steel isolating film oil-filled structure, and a sensitive chip is not directly contacted with the medium, so the compatibility and long-term stability of the medium are greatly improved, and the vehicle pressure sensor can be suitable for a plurality of oil-gas measurement situations and has simple internal structure and convenient assembly.
Description
Technical field
The utility model relates to a kind of automobile-used pressure transducer, is specifically related to press in a kind of step-up ratio that is used for air conditioning for automobiles refrigerating system, cylinder negative pressure, atmospheric pressure, turbine engine, the cylinder and the automobile-used pressure transducer in fields such as diesel locomotive brake system, blast main, oil system.
Background technology
The automobile pressure transducer is the important component part of vehicle body electric-control system, and traditional vehicle generally adopts slip formula or bimetallic strip structural formula oil pressure gauge with pressure transducer.This automobile-used pressure transducer goes out a convoluted diaphragm and slide-wire potentiometer is formed, and when pipeline oil pressure or air pressure changed, convoluted diaphragm produced displacement, and sliding in the contact that drives on the potentiometer, changes its resistance value.This automobile-used pressure transducer low price, temperature influence is little, media compatibility is good, therefore be widely used before, but because there is mechanical contact in it, in the vehicle operating process, frequent impact, vibrations, overload etc. are often arranged, this just makes that the machinery of automobile-used pressure transducer and electrical endurance are all had a strong impact on, and greatly reduces its reliability and service life.More and more pursue at automotive field under the prerequisite of security, comfortableness, must a kind of reliable more, stable, accurate pressure measurement scheme of invention.
Publication number is that the Chinese patent of CN 2867323 (patent No. is ZL 200620068444.X) has just been announced a kind of automobile sensor that does not have mechanical contact, it is by sensor housing, be installed on the pressure-sensing device of housing front end, nursing one's health the signal conditioning circuit of the pressure signal of this pressure-sensing device forms with the output electrical connector of drawing this signal conditioning circuit output signal, this housing front end is provided with the pressure intake, this housing middle part is provided with the solid Zhi Taijie that is groove structure, be provided with pressure between this bottom portion of groove and this pressure intake and introduce the hole, this pressure-sensing device back side is bonded in the wiring board that is provided with this signal conditioning circuit and positive this pressure of aiming at is introduced hole and experienced pressure, this housing rear end face sealing has bonnet, and this bonnet is anchored on this wiring board this solid Zhi Taijie simultaneously, and this pressure-sensing device perimembranous is closely attached on this bottom portion of groove based on middle securing member, this wiring board and this housing tight closure when realization pressure enters this pressure introducing hole.
Though the automobile-used pressure transducer of said structure is provided with the pressure intake at the housing front end, pressure-sensing device is measuring media pressure directly, there is not mechanical contact, but, because the skin of pressure-sensing device has just simply been smeared one deck and has been realized the gel that pressure conducts, therefore the automobile-used pressure transducer of said structure can only be measured air pressure, energy measurement oil pressure not, media compatibility is poor, and temperature is floated greatly, can not be applicable to most oil gas measurement occasions, adopt ceramic sensitive element in addition, but because more crisp under the ceramic low temperature, therefore not vibration resistance and impact also can not satisfy the automotive field application demand fully.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of compatibility good at above-mentioned prior art, not only energy measurement air pressure but also energy measurement oil pressure, has the automobile sensor than stiff stability.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this automobile-used pressure transducer, include sensor housing, pressure-sensing device, being used to of linking to each other with described pressure-sensing device nursed one's health the signal condition pcb board of the pressure signal of described pressure-sensing device, and the output electrical connector of drawing the conditioned signal of described signal condition pcb board output, the front end of described sensor housing is provided with pressure and introduces the hole, and described sensor housing inside is dark groove hollow structure, described pressure-sensing device is installed in described sensor housing inside, and described pressure-sensing device experience pressure face and described pressure introduce the hole over against, it is characterized in that: described pressure-sensing device is the pressure-sensing device of the oil-filled structure of silicon pressure type stainless steel barrier film.
Because pressure-sensing device adopts the oil-filled structure of silicon piezoresistance type stainless steel barrier film, sensitive chip does not directly contact with medium, and the periphery is covered with stainless steel, has improved media compatibility and long-time stability greatly, can be applicable to most oil gas measurement occasions.
As improvement, described output electrical connector is arranged on the afterbody of described sensor housing, and adopts riveting to closely cooperate between described electric out splice going splice and described sensor housing, and the anti-seismic performance of automobile-used pressure transducer can greatly be provided.And the output electrical connector is good with three core packard rapid-acting couplings, and output is applicable to the electric signal of follow-up processing of circuit on the automobile.
Be provided with first O-ring seals between the connecting portion of described pressure-sensing device and described sensor housing inwall.
Described sensor housing inwall bottommost is provided with annular groove, is equipped with the snap ring that is used for fixing described pressure-sensing device in this annular groove.
Like this, setting by first O-ring seals and snap ring, can realize automobile-used pressure transducer side pressure sealing, realized vibration, thermal shock, at a high speed, highly reliable, high-precision pressure under the rugged surroundings such as humidity measure, and simplified the product assembly structure greatly, simplify production run, and realized automobile-used pressure transducer automatic lot mapping.
Improve, there is pin at the described pressure-sensing device back side again, is connected with flexible circuit board between signal condition pcb board and pressure-sensing device pin.
Improve, the front end of described sensor housing is provided with the hickey that is connected with the ambient pressure system again, and this hickey is provided with the pressure seal that second O-ring seals is used for connection procedure outward.
At last, described signal condition pcb board is provided with the sensor signal conditioning specialized large scale integrated circuit, its inside is integrated with selector switch, programmable amplifier, digital to analog converter, microprocessor, storer, analog to digital converter and temperature sensor and output buffer module, can easily dispose output 0～5VDC, 0.5～4.5VDC or 4～20mADC standard analog signal or digital signal.
Compared with prior art, advantage of the present utility model is:
1,, can be applicable to most oil gas measurement occasions because this pressure-sensing device adopts the oil-filled structure of silicon piezoresistance type stainless steel barrier film, and sensitive chip does not directly contact with medium, has improved media compatibility and long-time stability greatly;
2, inner no mechanical potentiometer adjustment is contactless, has improved its shock resistance and long-time stability greatly;
3, the signal condition pcb board can carry out that temperature is floated, nonlinear compensation to the electric signal of sensitive element output, and the reliability height uses warm area extremely wide, and realized computer automation signal accent amount;
4, the output electrical connector is with three core packard rapid-acting couplings, and output signal standard, electric connecting mode versatility are good;
5, inner structure is simple, and is easy to assembly;
6, volume is little, and is easy for installation.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the front view of the utility model embodiment;
Fig. 3 is the vertical view of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Automobile-used pressure transducer shown in Fig. 1～3, comprise sensor housing 1, pressure-sensing device 5, being used to of linking to each other with pressure-sensing device 5 nursed one's health the signal condition pcb board 9 of the pressure signal of pressure-sensing device 5, and the output electrical connector 8 of drawing the conditioned signal of signal condition pcb board 9 outputs.Wherein sensor housing 1 inside is dark groove 10 hollow structures, the front end of sensor housing 1 is provided with pressure and introduces hole 2, pressure-sensing device 5 is installed in sensor housing 1 inside, and pressure-sensing device 5 experience pressure face and described pressure introduce hole 2 over against, here, pressure-sensing device 5 is the pressure-sensing device of the oil-filled structure of silicon pressure type stainless steel barrier film.
Output electrical connector 8 three core packard rapid-acting couplings be arranged on the afterbody of sensor housing 1, and 1 employing of electric out splice going splice 8 and sensor housing riveting closely cooperate.
There is pin 12 at pressure-sensing device 5 back sides, and 12 of signal condition pcb board 9 and pressure-sensing device pins are connected with flexible circuit board 7.
Be provided with first O-ring seals 4 between the connecting portion of pressure-sensing device 5 and sensor housing 1 inwall.Sensor housing 1 inwall bottommost is provided with annular groove 11, is equipped with the snap ring 6 that is used for fixing described pressure-sensing device 5 in this annular groove 11.
The front end of sensor housing 1 is provided with the hickey 13 that is connected with the ambient pressure system, is provided with the pressure seal that second O-ring seals 3 is used for connection procedure outside this hickey 13.
Signal condition pcb board 9 is provided with the sensor signal conditioning specialized large scale integrated circuit, its inside is integrated with selector switch, programmable amplifier, digital to analog converter, microprocessor, storer, analog to digital converter and temperature sensor and output buffer module, can easily dispose output 0～5VDC, 0.5～4.5VDC or 4～20mADC standard analog signal or digital signal.
Above-mentioned pressure-sensing device 5 adopts the silicon piezoresistance type measuring principles, and the oil-filled structure of stainless steel barrier film has characteristics such as high overload, media compatibility are strong, long-time stability height; This signal condition pcb board 9 is the pressure sensor signal conditioning specialized large scale integrated circuit, inside is integrated selector switch, programmable amplifier, digital to analog converter, microprocessor, storer, analog to digital converter and temperature sensor and output buffer module can easily dispose output 0～5VDC, 0.5～4.5VDC or 4～20mADC standard analog signal or digital signal.
The automobile-used pressure transducer of the utility model correctly is installed on the measured position by the screw thread pressure physical interface 13 of this sensor front end, when automobilism, gas, liquid enter sensor by the pressure intake 2 of sensor, and pressure is introduced the surface that hole 2 acts on this pressure-sensing device through excess pressure.Signal condition pcb board 9 provides the power supply excitation for this pressure-sensing device, this pressure-sensing device 5 is experienced pressure and is changed, convert electric signal to, the signal of 9 pairs of these pressure-sensing devices of this signal condition pcb board 5 output amplifies, linearization and temperature drift compensation, and according to the needs of follow-up circuit output 0～5VDC, 0.5～4.5VDC or 4～20mADC standard analog signal or digital signal
At automobile application operating mode characteristics with to tonometric demand, the utility model adopts stainless steel barrier film filling type silicon piezoresistance sensitivity element, and combine novel intelligent signal condition asic technology, stainless steel casing, snap ring is fixed, the side pressure sealing, realized vibration, thermal shock, at a high speed, highly reliable, high-precision pressure under the rugged surroundings such as humidity measure, and simplified the product assembly structure greatly, simplify production run, and realized pressure transducer automatic lot mapping.
Claims (8)
1, a kind of automobile-used pressure transducer, include sensor housing (1), pressure-sensing device (5), being used to of linking to each other with described pressure-sensing device (5) nursed one's health the signal condition pcb board (9) of the pressure signal of described pressure-sensing device (5), and the output electrical connector (8) of drawing the conditioned signal of described signal condition pcb board (9) output, the front end of described sensor housing (1) is provided with pressure and introduces hole (2), and described sensor housing (1) inside is dark groove (10) hollow structure, described pressure-sensing device (5) is installed in described sensor housing (1) inside, and described pressure-sensing device (5) experience pressure face and described pressure introduce hole (2) over against, it is characterized in that: described pressure-sensing device (5) is the pressure-sensing device of the oil-filled structure of silicon pressure type stainless steel barrier film.
2, automobile-used pressure transducer according to claim 1, it is characterized in that: described output electrical connector (8) is arranged on the afterbody of described sensor housing (1), and adopts riveting to closely cooperate between described electric out splice going splice (8) and described sensor housing (1).
3, automobile-used pressure transducer according to claim 1 is characterized in that: be provided with first O-ring seals (4) between the connecting portion of described pressure-sensing device (5) and described sensor housing (1) inwall.
4, automobile-used pressure transducer according to claim 1, it is characterized in that: described sensor housing (1) inwall bottommost is provided with annular groove (11), is equipped with the snap ring (6) that is used for fixing described pressure-sensing device (5) in this annular groove (11).
5, automobile-used pressure transducer according to claim 1 is characterized in that: there is pin (12) at described pressure-sensing device (5) back side, is connected with flexible circuit board (7) between signal condition pcb board (9) and pressure-sensing device pin (12).
6, pressure transducer according to claim 1, it is characterized in that: the front end of described sensor housing (1) is provided with the hickey (13) that is connected with the ambient pressure system, is provided with the pressure seal that second O-ring seals (3) is used for connection procedure outside this hickey (13).
7, according to the described automobile-used pressure transducer of the arbitrary claim of claim 1～6, it is characterized in that: described signal condition pcb board (9) is provided with the sensor signal conditioning specialized large scale integrated circuit, and its inside is integrated with selector switch, programmable amplifier, digital to analog converter, microprocessor, storer, analog to digital converter and temperature sensor and output buffer module.
8, according to the described automobile-used pressure transducer of the arbitrary claim of claim 1～6, it is characterized in that: described output electrical connector (8) is three core packard rapid-acting couplings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201674887U CN201340320Y (en) | 2008-11-07 | 2008-11-07 | Vehicle pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201674887U CN201340320Y (en) | 2008-11-07 | 2008-11-07 | Vehicle pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201340320Y true CN201340320Y (en) | 2009-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201674887U Expired - Fee Related CN201340320Y (en) | 2008-11-07 | 2008-11-07 | Vehicle pressure sensor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201340320Y (en) |
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979977A (en) * | 2010-10-19 | 2011-02-23 | 浙江盾安机械有限公司 | Pressure sensor |
| CN102735388A (en) * | 2011-04-01 | 2012-10-17 | 株式会社电装 | Sensor apparatus integrated to injector of internal combustion engine |
| CN102735389A (en) * | 2011-04-01 | 2012-10-17 | 株式会社电装 | Sensor device |
| CN102853964A (en) * | 2012-07-27 | 2013-01-02 | 浙江盾安人工环境股份有限公司 | Assembling structure for pressure sensors |
| CN102901543A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Liquid level sensor |
| CN102901600A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Automotive sensor |
| CN103185606A (en) * | 2011-12-30 | 2013-07-03 | 浙江盾安禾田金属有限公司 | Encapsulation structure of sensor core body, core body and sensor |
| CN103207044A (en) * | 2013-03-27 | 2013-07-17 | 株洲南车时代电气股份有限公司 | Pressure transmitter with waterproof and ventilating membrane |
| CN103615530A (en) * | 2013-11-28 | 2014-03-05 | 盛瑞传动股份有限公司 | Automotive pressure transducer used for transmission |
| CN103738325A (en) * | 2013-12-29 | 2014-04-23 | 芜湖伯特利电子控制系统有限公司 | Pressure sensor |
| CN104062046A (en) * | 2013-03-21 | 2014-09-24 | 精亮科技（深圳）有限公司 | Pressure sensor |
| CN104101456A (en) * | 2013-04-11 | 2014-10-15 | 苏州敏芯微电子技术有限公司 | Pressure sensor dielectric isolation packaging structure |
| CN104897323A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Novel strain gauge |
| CN104897324A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Concrete strain gauge |
| CN104897113A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Strain gauge |
| CN104897111A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Embedded type strain gauge |
| CN104897112A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Novel concrete strain gauge |
| CN105588681A (en) * | 2014-10-20 | 2016-05-18 | 华记科技有限公司 | Temperature compensation method and structure of electronic type pressure gauge |
| CN105745521A (en) * | 2013-11-18 | 2016-07-06 | 罗伯特·博世有限公司 | Pressure sensor arrangement for detecting a pressure of a fluid medium in a measurement chamber |
| CN106248292A (en) * | 2016-08-31 | 2016-12-21 | 佛山市云米电器科技有限公司 | With the pressure transducer of radio function and smart machine thereof and application |
| CN106802210A (en) * | 2016-12-29 | 2017-06-06 | 潍柴动力股份有限公司 | Detect the pressure sensor frock and detection method of the pressure in cylinder during engine braking |
| CN109297633A (en) * | 2018-09-29 | 2019-02-01 | 宁波中车时代传感技术有限公司 | Pressure transmitter is used in a kind of monitoring of Cooling Water of Diesel Locomotive system pressure |
| CN109974922A (en) * | 2017-12-14 | 2019-07-05 | 阿克韦尔股份公司 | For measuring the device of the physical parameter of fluid |
-
2008
- 2008-11-07 CN CNU2008201674887U patent/CN201340320Y/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101979977A (en) * | 2010-10-19 | 2011-02-23 | 浙江盾安机械有限公司 | Pressure sensor |
| CN102735388B (en) * | 2011-04-01 | 2014-09-10 | 株式会社电装 | Sensor apparatus integrated to injector of internal combustion engine |
| CN102735388A (en) * | 2011-04-01 | 2012-10-17 | 株式会社电装 | Sensor apparatus integrated to injector of internal combustion engine |
| CN102735389A (en) * | 2011-04-01 | 2012-10-17 | 株式会社电装 | Sensor device |
| CN102735389B (en) * | 2011-04-01 | 2014-11-05 | 株式会社电装 | Sensor device |
| CN102901543A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Liquid level sensor |
| CN102901600A (en) * | 2011-07-28 | 2013-01-30 | 上海朝辉压力仪器有限公司 | Automotive sensor |
| CN103185606A (en) * | 2011-12-30 | 2013-07-03 | 浙江盾安禾田金属有限公司 | Encapsulation structure of sensor core body, core body and sensor |
| CN102853964A (en) * | 2012-07-27 | 2013-01-02 | 浙江盾安人工环境股份有限公司 | Assembling structure for pressure sensors |
| CN102853964B (en) * | 2012-07-27 | 2014-01-08 | 浙江盾安人工环境股份有限公司 | Assembling structure for pressure sensors |
| CN104062046B (en) * | 2013-03-21 | 2016-06-22 | 精亮科技（深圳）有限公司 | A kind of pressure transducer |
| CN104062046A (en) * | 2013-03-21 | 2014-09-24 | 精亮科技（深圳）有限公司 | Pressure sensor |
| CN103207044A (en) * | 2013-03-27 | 2013-07-17 | 株洲南车时代电气股份有限公司 | Pressure transmitter with waterproof and ventilating membrane |
| CN103207044B (en) * | 2013-03-27 | 2016-09-14 | 株洲中车时代电气股份有限公司 | Pressure transmitter with waterproof ventilated membrane |
| CN104101456A (en) * | 2013-04-11 | 2014-10-15 | 苏州敏芯微电子技术有限公司 | Pressure sensor dielectric isolation packaging structure |
| CN105745521A (en) * | 2013-11-18 | 2016-07-06 | 罗伯特·博世有限公司 | Pressure sensor arrangement for detecting a pressure of a fluid medium in a measurement chamber |
| CN103615530A (en) * | 2013-11-28 | 2014-03-05 | 盛瑞传动股份有限公司 | Automotive pressure transducer used for transmission |
| CN103738325A (en) * | 2013-12-29 | 2014-04-23 | 芜湖伯特利电子控制系统有限公司 | Pressure sensor |
| CN103738325B (en) * | 2013-12-29 | 2017-02-08 | 芜湖伯特利电子控制系统有限公司 | Pressure sensor |
| CN104897323A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Novel strain gauge |
| CN104897112A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Novel concrete strain gauge |
| CN104897111A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Embedded type strain gauge |
| CN104897113A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Strain gauge |
| CN104897324A (en) * | 2014-10-05 | 2015-09-09 | 安徽贝莱电子科技有限公司 | Concrete strain gauge |
| CN105588681A (en) * | 2014-10-20 | 2016-05-18 | 华记科技有限公司 | Temperature compensation method and structure of electronic type pressure gauge |
| CN106248292A (en) * | 2016-08-31 | 2016-12-21 | 佛山市云米电器科技有限公司 | With the pressure transducer of radio function and smart machine thereof and application |
| CN106802210A (en) * | 2016-12-29 | 2017-06-06 | 潍柴动力股份有限公司 | Detect the pressure sensor frock and detection method of the pressure in cylinder during engine braking |
| CN109974922A (en) * | 2017-12-14 | 2019-07-05 | 阿克韦尔股份公司 | For measuring the device of the physical parameter of fluid |
| CN109974922B (en) * | 2017-12-14 | 2022-07-12 | 阿克韦尔公司 | Device for measuring a physical parameter of a fluid |
| CN109297633A (en) * | 2018-09-29 | 2019-02-01 | 宁波中车时代传感技术有限公司 | Pressure transmitter is used in a kind of monitoring of Cooling Water of Diesel Locomotive system pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091104 Termination date: 20121107 |