CN104359610A - PCB (printed circuit board) micro-pressure sensor isolation box - Google Patents
PCB (printed circuit board) micro-pressure sensor isolation box Download PDFInfo
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- CN104359610A CN104359610A CN201410606783.8A CN201410606783A CN104359610A CN 104359610 A CN104359610 A CN 104359610A CN 201410606783 A CN201410606783 A CN 201410606783A CN 104359610 A CN104359610 A CN 104359610A
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- pressure sensor
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- pcb
- barrier box
- pcb micro
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Abstract
The invention provides a PCB (printed circuit board) micro-pressure sensor isolation box. A sealing anticorrosion micro-pressure transfer medium is arranged in the isolation box which is isolated into two spaces, a PCB micro-pressure sensor is connected to one side of the isolation box, and a measured medium is connected to the other side of the isolation box. By the arrangement, the harmful medium measured is prevented from directly contacting with the PCB micro-pressure sensor, the problem about adaptability of the PCB micro-pressure sensor under the micro-pressure measuring conditions of moisture, dust and corrosive gas is solved, the measuring accuracy and stability of products are guaranteed, and service life is greatly prolonged.
Description
Technical field
The present invention relates to a kind of PCB micro-pressure sensor barrier box, particularly relate to a kind of process gas tonometric PCB micro-pressure sensor barrier box.
Background technology
The piezoresistive pressure sensor of the PCB encapsulation adopting silicon micromachining technique to produce, has the features such as good linearity, precision are high, micro-range, low cost, has been widely used in the micro pressure measuring of air or noncorrosive gases.
But the adaptive faculty of this series products to moisture, dust, corrosive gas (as coal mine mash gas, blast furnace gas etc.) is poor, cause measure inaccurate, poor stability, product decreasing failure rate are high.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of adaptable PCB micro-pressure sensor barrier box.
The technical solution used in the present invention is as follows: a kind of PCB micro-pressure sensor barrier box, it is characterized in that: sealing anticorrosion minute-pressure Transfer Medium is set in described barrier box, barrier box is isolated into two spaces, a side joint PCB micro-pressure sensor, another side joint measured medium.
As preferably, also comprise air drying agent, the company's of being arranged at PCB micro-pressure sensor side.
As preferably, also comprise air drying agent supporting construction, avoid air drying agent directly to contact with anticorrosive property minute-pressure Transfer Medium.
As preferably, also comprise the flexible pipe that is tightly connected of both sides, barrier box is connected with PCB micro-pressure sensor and measured medium respectively by seal tube.
As preferably, described anticorrosive property minute-pressure Transfer Medium is PVC film.
As preferably, described air drying agent is inorganic silica gel.
As preferably, described supporting construction is porous plate.
Compared with prior art, the invention has the beneficial effects as follows: avoid tested hazardous medium directly to contact with PCB micro-pressure sensor, solve PCB micro-pressure sensor preferably and have the adaptive faculty under moisture, dust and corrosive gas micro pressure measuring environmental baseline, ensure that the due measuring accuracy of product and stability, substantially prolongs serviceable life.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention's wherein embodiment.
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.
Arbitrary feature disclosed in this instructions (comprising any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, all can be replaced by other equivalences or the alternative features with similar object.That is, unless specifically stated otherwise, each feature is an example in a series of equivalence or similar characteristics.
As shown in Figure 1, a kind of PCB micro-pressure sensor barrier box, arranges sealing anticorrosion minute-pressure Transfer Medium, barrier box is isolated into two spaces in described barrier box, a side joint PCB micro-pressure sensor, another side joint measured medium.Tested hazardous medium is avoided directly to contact with PCB micro-pressure sensor, solve PCB micro-pressure sensor preferably and have the adaptive faculty under moisture, dust and corrosive gas micro pressure measuring environmental baseline, ensure that the due measuring accuracy of product and stability, substantially prolongs serviceable life.
Also comprise air drying agent, the company's of being arranged at PCB micro-pressure sensor side, ensure that PCB micro-pressure sensor is in dry environment for a long time.
Also comprise air drying agent supporting construction, avoid air drying agent directly to contact with anticorrosive property minute-pressure Transfer Medium, and separate one section of space, ensure that the minute-pressure transitivity of minute-pressure Transfer Medium is unaffected.
Also comprise the flexible pipe that is tightly connected of both sides, barrier box is connected with PCB micro-pressure sensor and measured medium respectively by seal tube.
In this specific embodiment, described anticorrosive property minute-pressure Transfer Medium is PVC film.Frivolous PVC film can the trickle pressure change of perception measured medium, and the transfer of air in sensor side compartment is to sensitive element of pressure sensor.
In this specific embodiment, described air drying agent is inorganic silica gel, keeps the air ambient that sensitive element is dry, clean.
In this specific embodiment, described supporting construction is porous plate.
In this specific embodiment, pressure bang path is:
Field process pressure → scene end impulse flexible pipe → scene end compartment → PVC film → sensor side compartment → sensor impulse flexible pipe → sensor sensing element.
PVC film has intercepted tested harmful gas and has contacted with the direct of sensitive element of pressure sensor, and be enclosed in the air in sensor side compartment under the suction-operated of inorganic silica gel, become dry and clean, the working environment of sensitive element improves greatly.The present invention is applied in gas engine gas flow control system, and in system, PCB micro-pressure sensor failure rate reduces more than 50 times.
Claims (7)
1. a PCB micro-pressure sensor barrier box, is characterized in that: arrange sealing anticorrosion minute-pressure Transfer Medium in described barrier box, barrier box is isolated into two spaces, a side joint PCB micro-pressure sensor, another side joint measured medium.
2. a kind of PCB micro-pressure sensor barrier box according to claim 1, is characterized in that: also comprise air drying agent, the company's of being arranged at PCB micro-pressure sensor side.
3. a kind of PCB micro-pressure sensor barrier box according to claim 1 and 2, is characterized in that: also comprise air drying agent supporting construction, avoids air drying agent directly to contact with anticorrosive property minute-pressure Transfer Medium.
4. a kind of PCB micro-pressure sensor barrier box according to claim 3, is characterized in that: the flexible pipe that is tightly connected also comprising both sides, barrier box is connected with PCB micro-pressure sensor and measured medium respectively by seal tube.
5. a kind of PCB micro-pressure sensor barrier box according to claim 4, is characterized in that: described anticorrosive property minute-pressure Transfer Medium is PVC film.
6. a kind of PCB micro-pressure sensor barrier box according to claim 4, is characterized in that: described air drying agent is inorganic silica gel.
7. a kind of PCB micro-pressure sensor barrier box according to claim 4, is characterized in that: described supporting construction is porous plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606783.8A CN104359610A (en) | 2014-11-03 | 2014-11-03 | PCB (printed circuit board) micro-pressure sensor isolation box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410606783.8A CN104359610A (en) | 2014-11-03 | 2014-11-03 | PCB (printed circuit board) micro-pressure sensor isolation box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104359610A true CN104359610A (en) | 2015-02-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410606783.8A Pending CN104359610A (en) | 2014-11-03 | 2014-11-03 | PCB (printed circuit board) micro-pressure sensor isolation box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104359610A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833179A (en) * | 2015-05-04 | 2015-08-12 | 天津博益气动股份有限公司 | Drying device of air pressure sensor |
| CN106353026A (en) * | 2016-08-12 | 2017-01-25 | 山东佰测传感科技股份有限公司 | Pressure instrument with excellent damp-proof function |
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| CN2206956Y (en) * | 1994-06-29 | 1995-09-06 | 中国矿业大学 | Determination device for coal sample initial releasing gas energy |
| CN1670420A (en) * | 2004-03-18 | 2005-09-21 | 罗斯蒙德公司 | Capillary weld extension with thermal isolation |
| CN101244626A (en) * | 2007-02-15 | 2008-08-20 | 发那科株式会社 | Method of indicating an open/close state of a check valve of an injection molding machine |
| CN101518707A (en) * | 2008-02-28 | 2009-09-02 | 北京时代桃源环境科技有限公司 | Method for adsorbing and dehumidifying mash gas and device thereof |
| CN201705637U (en) * | 2010-06-25 | 2011-01-12 | 蚌埠玻璃工业设计研究院 | Quantitative delivery device of small-flow corrosive liquid |
| CN101952702A (en) * | 2008-01-19 | 2011-01-19 | 诺具可有限公司 | Pressure sensor and device for preventing air inflow into the pressure sensor |
| CN102005285A (en) * | 2010-09-29 | 2011-04-06 | 西宁供电公司 | Method for treating oil contamination of transformer |
| CN102187191A (en) * | 2008-10-24 | 2011-09-14 | 恩德莱斯和豪瑟尔两合公司 | Relative pressure sensor |
| CN102507498A (en) * | 2011-10-24 | 2012-06-20 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN102589787A (en) * | 2011-01-06 | 2012-07-18 | 霍尼韦尔国际公司 | Media isolated pressure sensor |
| CN103925950A (en) * | 2014-05-13 | 2014-07-16 | 樊梦战 | Multifunctional gas parameter measuring device and using method thereof |
-
2014
- 2014-11-03 CN CN201410606783.8A patent/CN104359610A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2206956Y (en) * | 1994-06-29 | 1995-09-06 | 中国矿业大学 | Determination device for coal sample initial releasing gas energy |
| CN1670420A (en) * | 2004-03-18 | 2005-09-21 | 罗斯蒙德公司 | Capillary weld extension with thermal isolation |
| CN101244626A (en) * | 2007-02-15 | 2008-08-20 | 发那科株式会社 | Method of indicating an open/close state of a check valve of an injection molding machine |
| CN101952702A (en) * | 2008-01-19 | 2011-01-19 | 诺具可有限公司 | Pressure sensor and device for preventing air inflow into the pressure sensor |
| CN101518707A (en) * | 2008-02-28 | 2009-09-02 | 北京时代桃源环境科技有限公司 | Method for adsorbing and dehumidifying mash gas and device thereof |
| CN102187191A (en) * | 2008-10-24 | 2011-09-14 | 恩德莱斯和豪瑟尔两合公司 | Relative pressure sensor |
| CN201705637U (en) * | 2010-06-25 | 2011-01-12 | 蚌埠玻璃工业设计研究院 | Quantitative delivery device of small-flow corrosive liquid |
| CN102005285A (en) * | 2010-09-29 | 2011-04-06 | 西宁供电公司 | Method for treating oil contamination of transformer |
| CN102589787A (en) * | 2011-01-06 | 2012-07-18 | 霍尼韦尔国际公司 | Media isolated pressure sensor |
| CN102507498A (en) * | 2011-10-24 | 2012-06-20 | 兖矿集团有限公司 | Measurement range enlarging use method of gas tester and corresponding novel gas tester |
| CN103925950A (en) * | 2014-05-13 | 2014-07-16 | 樊梦战 | Multifunctional gas parameter measuring device and using method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833179A (en) * | 2015-05-04 | 2015-08-12 | 天津博益气动股份有限公司 | Drying device of air pressure sensor |
| CN106353026A (en) * | 2016-08-12 | 2017-01-25 | 山东佰测传感科技股份有限公司 | Pressure instrument with excellent damp-proof function |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |
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| RJ01 | Rejection of invention patent application after publication |