CN103017971A - Gas pressure sensor - Google Patents
Gas pressure sensor Download PDFInfo
- Publication number
- CN103017971A CN103017971A CN201210495176XA CN201210495176A CN103017971A CN 103017971 A CN103017971 A CN 103017971A CN 201210495176X A CN201210495176X A CN 201210495176XA CN 201210495176 A CN201210495176 A CN 201210495176A CN 103017971 A CN103017971 A CN 103017971A
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- housing
- pressure sensor
- gas pressure
- hall element
- elastomeric element
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Abstract
The invention discloses a gas pressure sensor which comprises a housing, a gas bag, and a Hall element, wherein the bottom of the housing is provided with a gas inlet, and the inner cavity surface of the housing is covered with a layer of material with high magnetic permeability; the gas bag is arranged at the bottom of the housing, the bottom surface of the gas bag props against the gas inlet, and the top surface of the gas bag is fixed with a magnet; the upper part of the magnet is tightly connected with the lower part of an elastic part, and the upper part of the elastic part is contacted with the top surface of the housing; and the Hall element is fixed at the top surface of the housing and is positioned in the middle of the elastic part. A connection line of the Hall element passes through the top of the housing. In the gas pressure sensor, a layer of shielded magnetic field is added in the housing of the sensor to avoid the influence of an external magnetic field to the Hall element so as to improve the measurement accuracy.
Description
Technical field
The present invention relates to a kind of gas pressure sensor.
Background technology
Has the multiple gases pressure transducer in the prior art, for example, the gas pressure sensor that uses Hall element, magnet, elastomeric element and air bag to make, when the gas push displacement of air bag, elasticity of compression parts, make magnet and Hall element variable in distance, Hall element is converted into corresponding pressure signal and output.Because this gas pressure sensor is by magnetic field change detection gaseous tension, and owing to can produce magnetic field in the circuit, affected by external magnetic field, cause measuring inaccurate, demand urgently improving.
Summary of the invention
Problem for prior art exists the object of the invention is to propose a kind of gas pressure sensor, by enforcement of the present invention, avoids environmental magnetic field on the impact of measuring accuracy.
For reaching this purpose, the present invention by the following technical solutions:
A kind of gas pressure sensor comprises:
Housing, its bottom has air intake opening, and described housing surface of internal cavity is coated with the material that one deck has high permeability;
Air bag is positioned at described housing bottom, the bottom surface described air intake opening of conflicting, and the end face fixed magnet, described magnet top closely is connected with the elastomeric element bottom, and described elastomeric element top contacts with the end face of housing;
Hall element is fixed on the end face of described housing, and is positioned in the middle of the described elastomeric element, and the connecting line of described Hall element passes described case top.
Preferably, the material of described high permeability is permalloy, siliconized plate or soft iron.
Preferably, described elastomeric element is spring.
Compared with prior art, the present invention has following beneficial effect:
Among the present invention, in sensor outer housing, increase one deck armoured magnetic field, avoided the impact of external magnetic field on Hall element, improved measuring accuracy.
The invention accompanying drawing
Fig. 1 is a kind of gas pressure sensor schematic diagram that the embodiment of the invention 1 provides.
Embodiment
The embodiment of the invention 1 provides a kind of gas pressure sensor, as shown in Figure 1, comprising: housing 1, and its bottom has air intake opening 2; Air bag 3 is positioned at described housing 1 bottom, and the bottom surface described air intake opening 2 of conflicting, end face fixed magnet 4, magnet 4 tops and elastomeric element 5(be spring for example) bottom closely is connected, and elastomeric element 5 tops contact with the end face of housing 1; Hall element 6 is fixed on the end face of described housing 1, and is positioned in the middle of the described elastomeric element 5, and the connecting line of Hall element 6 passes described case top; Described housing surface of internal cavity is coated with the material 7 that one deck has high permeability, and such as permalloy, siliconized plate (silicon steel sheet), soft iron etc. can armoured magnetic field, thereby makes outside magnetic field be difficult to penetrate in the housing, reaches the purpose of magnetic shielding.
The above; only be the better embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (3)
1. a gas pressure sensor is characterized in that, comprising:
Housing, its bottom has air intake opening, and described housing surface of internal cavity is coated with the material that one deck has high permeability;
Air bag is positioned at described housing bottom, the bottom surface described air intake opening of conflicting, and the end face fixed magnet, described magnet top closely is connected with the elastomeric element bottom, and described elastomeric element top contacts with the end face of housing;
Hall element is fixed on the end face of described housing, and is positioned in the middle of the described elastomeric element, and the connecting line of described Hall element passes described case top.
2. gas pressure sensor according to claim 1 is characterized in that, the material of described high permeability is permalloy, siliconized plate or soft iron.
3. gas pressure sensor according to claim 1 is characterized in that, described elastomeric element is spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495176XA CN103017971A (en) | 2012-11-28 | 2012-11-28 | Gas pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210495176XA CN103017971A (en) | 2012-11-28 | 2012-11-28 | Gas pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103017971A true CN103017971A (en) | 2013-04-03 |
Family
ID=47966830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210495176XA Pending CN103017971A (en) | 2012-11-28 | 2012-11-28 | Gas pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103017971A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602375A (en) * | 2018-11-15 | 2019-04-12 | 浙江欧琳生活健康科技有限公司 | A kind of control method of dish-washing machine and its adjustment programme |
| CN109632156A (en) * | 2019-01-07 | 2019-04-16 | 中国人民解放军国防科技大学 | Micro-thrust measurement system based on Barkhausen effect |
| CN110044536A (en) * | 2019-05-17 | 2019-07-23 | 大唐半导体科技有限公司 | A kind of gas-detecting device |
| CN112113689A (en) * | 2020-09-15 | 2020-12-22 | 智能移动机器人(中山)研究院 | Spring plantar sensor system based on Hall |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864639Y (en) * | 2005-12-09 | 2007-01-31 | 江新 | Gas pressure sensor |
| CN200976042Y (en) * | 2006-12-05 | 2007-11-14 | 孙劲楼 | Pen type magnetic strength gauge |
| CN201355265Y (en) * | 2009-03-03 | 2009-12-02 | 常州机械电子工程研究所 | Oil level sensor |
| CN101849171A (en) * | 2007-12-20 | 2010-09-29 | 马特尔公司 | Pressure meter with shielded hall effect sensor |
| CN201611295U (en) * | 2009-12-30 | 2010-10-20 | 成都威力生生物科技有限公司 | Gas pressure sensor |
-
2012
- 2012-11-28 CN CN201210495176XA patent/CN103017971A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2864639Y (en) * | 2005-12-09 | 2007-01-31 | 江新 | Gas pressure sensor |
| CN200976042Y (en) * | 2006-12-05 | 2007-11-14 | 孙劲楼 | Pen type magnetic strength gauge |
| CN101849171A (en) * | 2007-12-20 | 2010-09-29 | 马特尔公司 | Pressure meter with shielded hall effect sensor |
| CN201355265Y (en) * | 2009-03-03 | 2009-12-02 | 常州机械电子工程研究所 | Oil level sensor |
| CN201611295U (en) * | 2009-12-30 | 2010-10-20 | 成都威力生生物科技有限公司 | Gas pressure sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109602375A (en) * | 2018-11-15 | 2019-04-12 | 浙江欧琳生活健康科技有限公司 | A kind of control method of dish-washing machine and its adjustment programme |
| CN109632156A (en) * | 2019-01-07 | 2019-04-16 | 中国人民解放军国防科技大学 | Micro-thrust measurement system based on Barkhausen effect |
| CN110044536A (en) * | 2019-05-17 | 2019-07-23 | 大唐半导体科技有限公司 | A kind of gas-detecting device |
| CN112113689A (en) * | 2020-09-15 | 2020-12-22 | 智能移动机器人(中山)研究院 | Spring plantar sensor system based on Hall |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130403 |