CN105548253A - Gas sensor - Google Patents
Gas sensor Download PDFInfo
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- CN105548253A CN105548253A CN201410645393.1A CN201410645393A CN105548253A CN 105548253 A CN105548253 A CN 105548253A CN 201410645393 A CN201410645393 A CN 201410645393A CN 105548253 A CN105548253 A CN 105548253A
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- gas sensor
- catalytic combustion
- combustion method
- infrared eye
- infrared
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The invention relates to a gas sensor. The gas sensor comprises a catalytic combustion gas sensor and an infrared detector, the later part of the catalytic combustion gas sensor is in closed connection with one end of a tube body, and the infrared detection element of the infrared detector is in closed connection with the other end of the tube body; and the gas sensor also comprises a gas chamber with an explosion-proof function, and the catalytic combustion gas sensor, the infrared detector and the tube body are arranged in the gas chamber. The gas sensor greatly reduces influences of ambient temperature on the detected gas concentration of the infrared detector, and a light path between the catalytic combustion gas sensor and the infrared detector is closed, so interferences of dusts, water droplets or other liquid droplets to infrared detection are avoided, and the gas sensor can work in complex environment.
Description
Technical field
The present invention relates to a kind of gas sensor, especially a kind of gas sensor that can work in the presence of a harsh environment.
Background technology
Catalytic combustion method gas sensor conventional is at present the thermal effect principle utilizing catalytic combustion, matched by detecting element and compensating element, and form measuring bridge, when running into inflammable gas, inflammable gas burns under the effect of detecting element carrier surface and catalyzer, bed temperature just raises, combustable gas concentration is higher, bed temperature is also higher, by the platinum wire resistance also corresponding rising of carrier inside, thus make balanced bridge out of trim, export an electric signal be directly proportional to bed temperature and combustable gas concentration.
This catalytic combustion method gas sensor operationally, because detecting element is directly exposed in surrounding environment, and catalytic combustion method gas sensor not only will make inflammable gas burn in the above but also will detect the concentration of gas, so the temperature around detecting element too high or too low time all can affect the result of use of catalytic combustion method gas sensor, catalytic combustion method gas sensor even may be made normally not use, and the dust simultaneously around detecting element, micro-globule or other the normal work of micro-liquid pearl on detecting element also have impact.
Summary of the invention
The object of the invention is to for the deficiency existing for prior art, a kind of gas sensor that can work in the presence of a harsh environment is provided.
For achieving the above object, the invention provides a kind of gas sensor, comprise catalytic combustion method gas sensor and infrared eye, the sidepiece of described catalytic combustion method gas sensor is connected with one end of body is airtight, and the infrared detector cell of described infrared eye is connected with the other end of body is airtight; Described gas sensor also comprises the air chamber with explosion prevention function, and described catalytic combustion method gas sensor, described infrared eye and described body are arranged in described air chamber.
During work, inflammable gas enters air chamber by the air admission hole of air chamber, and burns on catalytic combustion method gas sensor, and infrared eye realizes the detection to gas concentration by the infrared light intensity of radiation in body during the burning of detection inflammable gas.
Adopt the present invention of said structure, catalytic combustion method gas sensor is used for inflammable gas is burnt, when the concentration of gas is different, burning to release heat be different, but by infrared eye detect catalytic combustion method gas sensor exothermic change realize to gas concentration detection, catalytic combustion method gas sensor is encapsulated in air chamber simultaneously, directly do not contact with the external world, this considerably reduce the impact of ambient temperature on infrared eye probe gas concentration, simultaneously because catalytic combustion method gas sensor is connected with one end of body is airtight, the infrared detector cell of infrared eye is connected with the other end of body is airtight, light path between catalytic combustion method gas sensor and infrared eye is airtight, therefore do not need to consider such as dust, micro-globule, or other micro-liquid pearl is to the interference of infrared acquisition, can work in more complex environment.
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas sensor specific embodiment one of the present invention;
Fig. 2 is the structural representation of gas sensor specific embodiment two of the present invention.
Embodiment
Fig. 1 is the structural representation of gas sensor specific embodiment one of the present invention, as shown in Figure 1, comprise catalytic combustion method gas sensor 1 and infrared eye 2, the sidepiece of described catalytic combustion method gas sensor 1 is connected with one end of body 3 is airtight, and the infrared detector cell (not shown) of described infrared eye 2 is connected with the other end of body 3 is airtight.
During work, inflammable gas enters air chamber 4 by the air admission hole of air chamber 4, and burns on catalytic combustion method gas sensor 1, and infrared eye 2 realizes the detection to gas concentration by the infrared light intensity of radiation in body 3 during the burning of detection inflammable gas.
Adopt the present invention of said structure, catalytic combustion method gas sensor 1 burns for making inflammable gas, the concentration of itself not probe gas, but realize the detection to gas concentration by infrared eye 2, catalytic combustion method gas sensor 1 is encapsulated in air chamber 4 simultaneously, directly do not contact with the external world, this considerably reduce the impact of ambient temperature on infrared eye 2 probe gas concentration, simultaneously because catalytic combustion method gas sensor 1 is connected with one end of body 3 is airtight, the infrared detector cell of infrared eye 2 is connected with the other end of body 3 is airtight, light path between catalytic combustion method gas sensor 1 and infrared eye 2 is airtight, therefore do not need to consider such as dust, micro-globule, or other micro-liquid pearl is to the interference of infrared acquisition, can work in more complex environment.
Fig. 2 is the structural representation of gas sensor specific embodiment two of the present invention, this embodiment is also provided with the air chamber 3 with explosion prevention function on the basis of embodiment one, described catalytic combustion method gas sensor 1, infrared eye 2 and body 3 are arranged in described air chamber 4, will as shown in Figure 2, described catalytic combustion method gas sensor 1 is column, do not comprise compensating element, described infrared eye 2 is thermoelectric pile formula infrared eye.
The present embodiment is except having the advantage of embodiment one, because catalytic combustion method gas sensor 1 does not comprise compensating element, avoid gas when catalytic combustion method gas sensor 1 works burn on compensating element, cause detection interference, simultaneously because outside is provided with the air chamber 3 with explosion prevention function, make the gas sensor in the present embodiment safer.
Claims (3)
1. a gas sensor, it is characterized in that comprising catalytic combustion method gas sensor (1) and infrared eye (2), the sidepiece of described catalytic combustion method gas sensor (1) is connected with one end of body (3) is airtight, and the infrared detector cell of described infrared eye (2) is connected with the other end of body (3) is airtight; Described gas sensor also comprises the air chamber (4) with explosion prevention function, and described catalytic combustion method gas sensor (1), described infrared eye (2) and described body (3) are arranged in described air chamber (4).
2. gas sensor according to claim 1, is characterized in that described catalytic combustion method gas sensor (1) is for column or sheet.
3. gas sensor according to claim 1, is characterized in that described infrared eye (2) is for thermoelectric pile formula infrared eye or pyroelectric infrared eye.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645393.1A CN105548253A (en) | 2014-11-02 | 2014-11-02 | Gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645393.1A CN105548253A (en) | 2014-11-02 | 2014-11-02 | Gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105548253A true CN105548253A (en) | 2016-05-04 |
Family
ID=55827589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410645393.1A Pending CN105548253A (en) | 2014-11-02 | 2014-11-02 | Gas sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105548253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049634A (en) * | 2021-03-19 | 2021-06-29 | 青岛芯笙微纳电子科技有限公司 | Miniature gas sensor based on heat effect |
-
2014
- 2014-11-02 CN CN201410645393.1A patent/CN105548253A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113049634A (en) * | 2021-03-19 | 2021-06-29 | 青岛芯笙微纳电子科技有限公司 | Miniature gas sensor based on heat effect |
| CN113049634B (en) * | 2021-03-19 | 2022-08-23 | 青岛芯笙微纳电子科技有限公司 | Miniature gas sensor based on heat effect |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: CHONGQING AOGEMEI GAS CO., LTD. Document name: Notification of Publication of the Application for Invention |
|
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160504 |