CN105424272A - vacuum degree sensor suitable for plateau - Google Patents
vacuum degree sensor suitable for plateau Download PDFInfo
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- CN105424272A CN105424272A CN201510988856.9A CN201510988856A CN105424272A CN 105424272 A CN105424272 A CN 105424272A CN 201510988856 A CN201510988856 A CN 201510988856A CN 105424272 A CN105424272 A CN 105424272A
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- connector
- pcb
- absolute pressure
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- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
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- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention relates to a vacuum degree sensor suitable for the plateau. The vacuum degree sensor comprises a connector, an absolute pressure chip, a relative pressure chip, a PCB, electronic elements, a first sealing ring, a second sealing ring and a stainless steel shell. The absolute pressure chip and the relative pressure chip are welded on the front and back surfaces of the PCB. The electronic elements are welded on the front and back surfaces of the PCB so as to form a functional circuit. The completely welded PCB is inserted in the connector so that the surface of the absolute pressure chip is enabled to be arranged in the cavity of the connector and welded with the power supply and signal terminal of the connector. The first sealing ring and the second sealing ring are assembled on the stainless steel shell and then the stainless steel shell and the completely assembled connector are assembled and fixed through crimping. The technical problems that present new energy vehicle brake servo systems cannot safely work in the region of low atmospheric pressure like the plateau region no matter using a single relative pressure sensor or an absolute pressure sensor can be solved.
Description
Technical field
The present invention relates to automobile sensor field, be specifically related to a kind of vacuum sensor being applicable to plateau.
Background technology
At present, domestic new-energy automobile brake servo systems axiol-ogy vacuum tank vacuum tightness all adopts single absolute pressure transducer or single relative pressure sensor.This single sensor controls owing to automatically cannot find out current atmospheric pressure, same a set of control data can only be adopted under different atmospheric pressure, due to China, vast territory and abundant resources, the atmospheric pressure in some area is very large with standard atmospheric pressure difference, even be less than 60Kpa, under such circumstances, the conventional system of single-sensor that adopts will lose efficacy or cause motor damage.
For example, the working pressure of general control vacuum tank is at the relative vacuum degree of-50Kpa ~-70Kpa, and be namely less than the relative vacuum degree of-50Kpa, motor starts to vacuumize vacuum tank, and when being extracted into-70Kpa, motor stops.If under the atmospheric environment of 60Kpa:
Adopt relative pressure sensor :-the 70Kpa of 60Kpa atmospheric pressure environment is a non-existent concept, and namely may reach never, so system would not stop the running of motor, motor rotation time one length will be burnt.
Adopt absolute pressure transducer: be when demarcation under normal atmospheric pressure 100Kpa ,-50Kpa ~-70Kpa changes into Absolute truth reciprocal of duty cycle i.e. 50Kpa ~ 30Kpa.Under the atmospheric pressure environment of 60Kpa, the relative vacuum degree-10Kpa ~-30Kpa of working control, this vacuum tightness cannot meet the job requirement of force aid system, also just causes force aid system to lose efficacy, and brake is stepped on motionless.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of vacuum sensor being applicable to plateau.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of vacuum sensor being applicable to plateau, comprise connector, absolute pressure chip, relative pressure chip, PCB, electronic component, O-ring seal one, O-ring seal two and stainless steel casing, described absolute pressure chip and relative pressure chips welding are in the tow sides of PCB, described welding electronic elements is in the tow sides composition function circuit of PCB, the PCB that described welding completes inserts connector makes that face of absolute pressure chip be placed in the die cavity of connector, and weld with the power supply of connector and signal terminal, described stainless steel casing assembles O-ring seal one and O-ring seal two assembles with the above-mentioned connector completing assembling and crimping is fixed.
On such scheme basis preferably, described connector adopts 4 line systems: power supply, ground connection, and absolute pressure exports, and relative pressure exports.
On such scheme basis preferably, described absolute pressure chip is responded to external atmospheric pressure by the pore one of connector and is measured current atmospheric pressure.
On such scheme basis preferably, described relative pressure chip responds to working pressure in vacuum tank by the pore three of O-ring seal two, and its another side air source sensitive surface responds to atmospheric pressure by the pore one of connector and the pore two of PCB.
The beneficial effect that the present invention compared with prior art has is: during work, employing direct supply drives, sensor is arranged on vacuum tank, absolute pressure chip feeds back to control circuit by the pore of connector to respond to external atmospheric pressure and to measure current atmospheric pressure, corresponding pressure controling parameter is called according to current atmospheric pressure, relative pressure chip responds to working pressure in vacuum tank by the pore three of O-ring seal two, its another side air source sensitive surface responds to atmospheric pressure by the pore one of connector and the pore two of PCB, thus measure relative working pressure, feed back to control circuit, control circuit controls startup and the cut out of motor according to this force value, thus vacuum tightness is in the pressure range of setting in guarantee vacuum tank.
Accompanying drawing explanation
Fig. 1 is inner structure schematic diagram of the present invention.
Fig. 2 is one-piece construction schematic diagram of the present invention.
Number in the figure is: 1-connector, 2-power supply and signal terminal, 3-absolute pressure chip, 4-PCB, 5-electronic component, 6-O-ring seal one, 7-relative pressure chip, 8-stainless steel casing, 9-O-ring seal two, 10-pore one, 11-pore two, 12-pore three.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In describing the invention, it will be appreciated that, term " longitudinal direction ", " transverse direction ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
See figures.1.and.2 known, a kind of vacuum sensor being applicable to plateau, comprise connector 1, absolute pressure chip 3, relative pressure chip 7, PCB4, electronic component 5, O-ring seal 1, O-ring seal 29 and stainless steel casing 8, described absolute pressure chip 3 and relative pressure chip 7 are welded in the tow sides of PCB4, described electronic component 5 is welded in the tow sides composition function circuit of PCB4, the PCB4 that described welding completes inserts connector 1 makes that face of absolute pressure chip 3 be placed in the die cavity of connector 1, and weld with the power supply of connector 1 and signal terminal 2, described stainless steel casing 8 assembles O-ring seal 1 and O-ring seal 29 assembles with the above-mentioned connector 1 completing assembling and crimping is fixed.
It should be noted that, described connector 1 adopts 4 line systems: power supply, ground connection, absolute pressure exports, relative pressure exports, described absolute pressure chip 3 is responded to external atmospheric pressure by the pore one of connector and is measured current atmospheric pressure, and described relative pressure chip 7 responds to working pressure in vacuum tank by the pore 3 12 of O-ring seal 29, and its another side air source sensitive surface responds to atmospheric pressure by the pore 1 of connector and the pore 2 11 of PCB4.
Based on above-mentioned, during work, 5V direct supply is adopted to drive, sensor is arranged on vacuum tank, absolute pressure chip 3 is responded to external atmospheric pressure by the pore 1 of connector 1 and is measured current atmospheric pressure and feeds back to control circuit, corresponding pressure controling parameter is called according to current atmospheric pressure, relative pressure chip 7 responds to working pressure in vacuum tank by the pore 3 12 of O-ring seal 29, its another side air source sensitive surface responds to atmospheric pressure by the pore 1 of connector 1 and the pore 2 11 of PCB4, thus measure relative working pressure, feed back to control circuit, control circuit controls startup and the cut out of motor according to this force value, thus vacuum tightness is in the pressure range of setting in guarantee vacuum tank.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. one kind is applicable to the vacuum sensor on plateau, it is characterized in that: comprise connector, absolute pressure chip, relative pressure chip, PCB, electronic component, O-ring seal one, O-ring seal two and stainless steel casing, described absolute pressure chip and relative pressure chips welding are in the tow sides of PCB, described welding electronic elements is in the tow sides composition function circuit of PCB, the PCB that described welding completes inserts connector makes that face of absolute pressure chip be placed in the die cavity of connector, and weld with the power supply of connector and signal terminal, described stainless steel casing assembles O-ring seal one and O-ring seal two assembles with the above-mentioned connector completing assembling and crimping is fixed.
2. a kind of vacuum sensor being applicable to plateau according to claim 1, is characterized in that: described connector adopts 4 line systems: power supply, ground connection, and absolute pressure exports, and relative pressure exports.
3. a kind of vacuum sensor being applicable to plateau according to claim 1, is characterized in that: described absolute pressure chip is responded to external atmospheric pressure by the pore one of connector and measured current atmospheric pressure.
4. a kind of vacuum sensor being applicable to plateau according to claim 1, it is characterized in that: described relative pressure chip responds to working pressure in vacuum tank by the pore three of O-ring seal two, its another side air source sensitive surface responds to atmospheric pressure by the pore one of connector and the pore two of PCB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988856.9A CN105424272A (en) | 2015-12-28 | 2015-12-28 | vacuum degree sensor suitable for plateau |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510988856.9A CN105424272A (en) | 2015-12-28 | 2015-12-28 | vacuum degree sensor suitable for plateau |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105424272A true CN105424272A (en) | 2016-03-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510988856.9A Pending CN105424272A (en) | 2015-12-28 | 2015-12-28 | vacuum degree sensor suitable for plateau |
Country Status (1)
| Country | Link |
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| CN (1) | CN105424272A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106773A (en) * | 2017-12-13 | 2018-06-01 | 芜湖致通汽车电子有限公司 | Four pressure differential pressure pickups |
| CN112665776A (en) * | 2020-12-25 | 2021-04-16 | 黄山徽熿新能源科技有限公司 | Double-pressure sensor for new energy automobile braking system |
| CN114383771A (en) * | 2022-01-13 | 2022-04-22 | 北京卫星环境工程研究所 | Space vacuum sensor suitable for vacuum and complex electromagnetic environment |
| CN115014630A (en) * | 2021-03-03 | 2022-09-06 | 阿自倍尔株式会社 | Pressure measuring device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177678A (en) * | 1995-12-26 | 1997-07-11 | Honda Motor Co Ltd | Control method for negative pressure pump |
| CN1350668A (en) * | 1999-05-26 | 2002-05-22 | 赛布尔仪器科技有限责任公司 | Wide range gas flow system with real time flow measurement and correction |
| CN2566253Y (en) * | 2002-09-03 | 2003-08-13 | 成都航空仪表公司 | Absolute pressure transducer |
| CN203666631U (en) * | 2013-12-30 | 2014-06-25 | 重庆长安铃木汽车有限公司 | Brake boosting control system for electric car |
| CN203908729U (en) * | 2014-06-20 | 2014-10-29 | 浙江卡韦德新能源科技有限公司 | Vehicular vacuum sensor |
| CN104406716A (en) * | 2014-11-24 | 2015-03-11 | 黄山迈普汽车部件有限公司 | Improved pressure sensor |
| CN104842987A (en) * | 2015-04-01 | 2015-08-19 | 北京新能源汽车股份有限公司 | Vacuum booster system of electric automobile and pressure measurement method of system |
| CN204788767U (en) * | 2015-07-20 | 2015-11-18 | 安徽江淮汽车股份有限公司 | Car barometer sensor |
-
2015
- 2015-12-28 CN CN201510988856.9A patent/CN105424272A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09177678A (en) * | 1995-12-26 | 1997-07-11 | Honda Motor Co Ltd | Control method for negative pressure pump |
| CN1350668A (en) * | 1999-05-26 | 2002-05-22 | 赛布尔仪器科技有限责任公司 | Wide range gas flow system with real time flow measurement and correction |
| CN2566253Y (en) * | 2002-09-03 | 2003-08-13 | 成都航空仪表公司 | Absolute pressure transducer |
| CN203666631U (en) * | 2013-12-30 | 2014-06-25 | 重庆长安铃木汽车有限公司 | Brake boosting control system for electric car |
| CN203908729U (en) * | 2014-06-20 | 2014-10-29 | 浙江卡韦德新能源科技有限公司 | Vehicular vacuum sensor |
| CN104406716A (en) * | 2014-11-24 | 2015-03-11 | 黄山迈普汽车部件有限公司 | Improved pressure sensor |
| CN104842987A (en) * | 2015-04-01 | 2015-08-19 | 北京新能源汽车股份有限公司 | Vacuum booster system of electric automobile and pressure measurement method of system |
| CN204788767U (en) * | 2015-07-20 | 2015-11-18 | 安徽江淮汽车股份有限公司 | Car barometer sensor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108106773A (en) * | 2017-12-13 | 2018-06-01 | 芜湖致通汽车电子有限公司 | Four pressure differential pressure pickups |
| CN112665776A (en) * | 2020-12-25 | 2021-04-16 | 黄山徽熿新能源科技有限公司 | Double-pressure sensor for new energy automobile braking system |
| CN115014630A (en) * | 2021-03-03 | 2022-09-06 | 阿自倍尔株式会社 | Pressure measuring device |
| CN115014630B (en) * | 2021-03-03 | 2024-04-02 | 阿自倍尔株式会社 | Pressure measuring device |
| CN114383771A (en) * | 2022-01-13 | 2022-04-22 | 北京卫星环境工程研究所 | Space vacuum sensor suitable for vacuum and complex electromagnetic environment |
| CN114383771B (en) * | 2022-01-13 | 2024-01-19 | 北京卫星环境工程研究所 | Space vacuum sensor suitable for vacuum and complex electromagnetic environment |
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Application publication date: 20160323 |