CN203069508U - Infrared gas sensor - Google Patents
Infrared gas sensor Download PDFInfo
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- CN203069508U CN203069508U CN2013200602327U CN201320060232U CN203069508U CN 203069508 U CN203069508 U CN 203069508U CN 2013200602327 U CN2013200602327 U CN 2013200602327U CN 201320060232 U CN201320060232 U CN 201320060232U CN 203069508 U CN203069508 U CN 203069508U
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Abstract
The utility model relates to an infrared gas sensor. The infrared gas sensor comprises a power module, a detecting module, a signal processing module and an output display module; the output end of the power module is connected with the input end of the detecting module; the input end of the signal processing module is connected with the output end of the detecting module; the input end of the output display module is connected with the output end of the signal processing module; the detecting module comprises a gas chamber, an infrared source, an infrared receiver and a filter screen, wherein the infrared source and the infrared receiver are arranged on the inner wall of the gas chamber; the filter screen is positioned at the bottom part of the gas chamber; the inner wall of the gas chamber is a reflective inner wall; the infrared source and the infrared receiver are respectively arranged at the upper end and the lower end of the gas chamber; and the infrared source is inclined towards the infrared receiver for an angle. According to the infrared gas sensor, the infrared light is emitted from the infrared source and then reflected by the inner wall of the gas chamber for a plurality of times, and thus light paths are increased, and the detection precision of the infrared gas sensor is improved on the premise that the volume of the infrared gas sensor is not increased.
Description
Technical field
The utility model relates to the gas sensor field, is specifically related to a kind of infrared gas sensor.
Background technology
Gas sensor is a kind of converter that certain gas volume mark is changed into corresponding electric signal.Classify with gas-sensitive property, mainly can be divided into: semi-conductor type gas sensor, galvanochemistry type gas sensor, solid-state electrolyte gas sensor, catalytic combustion type gas sensor, photochemistry type gas sensor and macromolecule gas sensor etc.Optical type gas sensor comprises infrared absorption type, spectral absorption type, fluorescent type, chemical optical fibre material-type etc., and wherein, infrared absorption type is being most widely used of infrared gas sensor.
In mine, rubbish drilling well and most public places gas sensor is installed all, is used for detection and the warning of gas.Though the performance of infrared gas sensor is constantly improved raising, but the mutual restriction of volume and sensitivity is a great problem of infrared gas sensor, the principle of infrared gas sensor is the infrared absorption peak difference according to gas with various, detects gas and respective concentration thereof by measuring and analyze infrared absorption peak.Gas to be measured is directly proportional with the distance that infrared light is passed by in gas to be measured to the degree of absorption of infrared light, simultaneously, increase the distance that infrared light is passed by in gas to be measured, general means are by increasing the volume of gas sensor, the volume increase of gas sensor has strengthened the difficulty of installing and using, and also is unfavorable for the application of portable occasion.
The utility model content
The purpose of this utility model is to overcome weak point of the prior art, and a kind of precision height, infrared gas sensor that volume is little are provided.
The purpose of this utility model is achieved through the following technical solutions: a kind of infrared gas sensor, comprise power module, detection module, signal processing module and output display module, the output terminal of described power module is connected with the detection module input end, the signal processing module input end is connected with the output terminal of detection module, the input end of described output display module is connected with the output terminal of signal processing module, described detection module comprises air chamber, the screen pack that is arranged on infrared light supply and the infrared receiver device of air chamber inwall and is arranged on the air chamber bottom, the air chamber inwall is reflective inwall, described infrared light supply and infrared receiver device are separately positioned on the top and bottom of air chamber, and infrared light supply is to the infrared receiver device angle that tilts.
Preferably, described infrared receiver device comprises a test side and a reference edge, described test side is made up of a pyroelectric detector and twin target gas, light intensity and temperature sensitive filter, and described reference edge is made up of light intensity and temperature sensitive filter a pyroelectric detector and one.
Preferably, an amplification module is set between described detection module and the signal processing module.
Preferably, reflective inwall is gold-plated.
The utility model has the following advantages and beneficial effect compared to existing technology:
(1) the utility model is by being separately positioned on infrared light supply and infrared receiver device the top and bottom of air chamber, and infrared light supply is to the infrared receiver device angle that tilts, the distance that infrared light is passed by gas to be measured through the repeatedly reflection increase infrared light of air chamber inwall from infrared light supply, the accuracy of detection of increase infrared gas sensor under the condition that does not increase the infrared gas sensor volume.
(2) screen pack being set bottom the described air chamber can fully with the air chamber internal gas, quick exchange extraneous gas, improve reaction velocity and the accuracy of detection of infrared gas sensor, simultaneously screen pack filters impurity such as particle in the gas to be measured, the globule, further improves measuring accuracy.
(3) described infrared receiver device arranges a test side and a reference edge, and according to the signal ratio of test side and reference edge output, the interference that other physical factors of cancellation external environment cause further improves the precision of infrared gas sensor.
(4) amplification module is set between detection module and signal processing module, further increases the accuracy of detection of infrared gas sensor.
(5) described reflective inwall is gold-plated, reduces the reflective inwall of infrared light in reflection process to the absorption of Infrared intensity.
Description of drawings
Fig. 1 is embodiment 1 infrared gas sensor theory diagram.
Fig. 2 is the structure cut-open view of detection module among the embodiment 1.
Fig. 3 is the upward view of detection module among the embodiment 1.
Fig. 4 is the structure cut-open view of detection module among the embodiment 2.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but the embodiment that the utility model is created is not limited thereto.
As Fig. 1,2, shown in 3, a kind of infrared gas sensor, comprise power module, detection module, amplification module, signal processing module and output display module, the output terminal of described power module is connected with the detection module input end, the input end of amplification module is connected with the output terminal of detection module, the output terminal of amplification module is connected with the input end of signal processing module, the input end of output display module is connected with the output terminal of signal processing module, described detection module comprises air chamber 1, the screen pack 3 that is arranged on infrared light supply 2 and the infrared receiver device of air chamber inwall and is arranged on the air chamber bottom, the air chamber inwall is gold-plated reflective inwall 4, described infrared light supply 2 is arranged on the left upper end of air chamber inwall, and downward-sloping 30 °, described infrared receiver device is arranged on the bottom righthand side of air chamber inwall.
Described infrared receiver device comprises a test side and a reference edge, described test side is made up of a pyroelectric detector 5 and twin target gas, light intensity and temperature sensitive filter 6, and described reference edge is made up of light intensity and temperature sensitive filter 8 pyroelectric detector 7 and one.
Power module provides power supply to the infrared light supply 2 of detection module, the infrared light that infrared light supply 2 sends arrives infrared receiver device through the repeatedly reflection of inwall, infrared test side and the reference edge of accepting device receives infrared light respectively, signal ratio according to test side and reference edge output, the interference that other physical factors of cancellation external environment cause, the precision of raising infrared gas sensor.The detection signal of infrared receiver device output amplifies processing through amplification module, and the signal after amplifying processing inputs to signal processing module and carries out processing such as analog to digital conversion, and the digital signal of signal processing module output is exported by the output display module.
As shown in Figure 4, present embodiment except following characteristics other structures with embodiment 1: described infrared light supply is arranged on the left upper end of air chamber inwall, and downward-sloping 15 °, and described infrared receiver device is arranged on the lower-left end of air chamber inwall.
The utility model can be adjusted the position of infrared light supply and infrared receiver device according to actual needs, and the infrared light supply angle of inclination, thereby adjusts the distance that infrared light is passed by in gas to be measured.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (4)
1. infrared gas sensor, comprise power module, detection module, signal processing module and output display module, the output terminal of described power module is connected with the detection module input end, the signal processing module input end is connected with the output terminal of detection module, the input end of described output display module is connected with the output terminal of signal processing module, it is characterized in that: described detection module comprises air chamber (1), the screen pack (3) that is arranged on infrared light supply (2) and the infrared receiver device of air chamber inwall and is arranged on the air chamber bottom, the air chamber inwall is reflective inwall (4), described infrared light supply (2) and infrared receiver device are separately positioned on the top and bottom of air chamber (2), and infrared light supply (2) is to the infrared receiver device angle that tilts.
2. according to the described infrared gas sensor of claim 1, it is characterized in that: described infrared receiver device comprises a test side and a reference edge, described test side is made up of a pyroelectric detector (5) and twin target gas, light intensity and temperature sensitive filter (6), and described reference edge is made up of light intensity and temperature sensitive filter (8) a pyroelectric detector (7) and one.
3. according to claim 1 or 2 described infrared gas sensors, it is characterized in that: an amplification module is set between described detection module and the signal processing module.
4. according to the described infrared gas sensor of claim 3, it is characterized in that: described reflective inwall is gold-plated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200602327U CN203069508U (en) | 2013-01-31 | 2013-01-31 | Infrared gas sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013200602327U CN203069508U (en) | 2013-01-31 | 2013-01-31 | Infrared gas sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203069508U true CN203069508U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013200602327U Expired - Fee Related CN203069508U (en) | 2013-01-31 | 2013-01-31 | Infrared gas sensor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822892A (en) * | 2014-02-28 | 2014-05-28 | 江苏物联网研究发展中心 | Infrared gas sensor |
| CN103822891A (en) * | 2014-02-12 | 2014-05-28 | 无锡中科智能农业发展有限责任公司 | Optical structure of small-size NDIR (non-dispersive infrared) type gas sensor |
| CN105593666A (en) * | 2013-09-27 | 2016-05-18 | 旭化成微电子株式会社 | Gas sensor |
| CN105588815A (en) * | 2016-03-08 | 2016-05-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Infrared gas detector based on micro-airflow |
| CN108709868A (en) * | 2018-08-17 | 2018-10-26 | 青岛海纳光电环保有限公司 | A kind of infrared gas sensor and infrared gas detection device |
| CN114689513A (en) * | 2020-12-26 | 2022-07-01 | 中国电子科技集团公司第二十六研究所 | Lens type gas sensor |
-
2013
- 2013-01-31 CN CN2013200602327U patent/CN203069508U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105593666A (en) * | 2013-09-27 | 2016-05-18 | 旭化成微电子株式会社 | Gas sensor |
| US10082464B2 (en) | 2013-09-27 | 2018-09-25 | Asahi Kasei Microdevices Corporation | Gas sensor |
| US10551314B2 (en) | 2013-09-27 | 2020-02-04 | Asahi Kasei Microdevices Corporation | Gas sensor |
| CN103822891A (en) * | 2014-02-12 | 2014-05-28 | 无锡中科智能农业发展有限责任公司 | Optical structure of small-size NDIR (non-dispersive infrared) type gas sensor |
| CN103822891B (en) * | 2014-02-12 | 2016-04-20 | 无锡中科智能农业发展有限责任公司 | A kind of optical texture of small size NDIR type gas sensor |
| CN103822892A (en) * | 2014-02-28 | 2014-05-28 | 江苏物联网研究发展中心 | Infrared gas sensor |
| CN105588815A (en) * | 2016-03-08 | 2016-05-18 | 国网电力科学研究院武汉南瑞有限责任公司 | Infrared gas detector based on micro-airflow |
| CN105588815B (en) * | 2016-03-08 | 2018-08-07 | 国家电网公司 | A kind of infrared gas detector based on Tiny pore |
| CN108709868A (en) * | 2018-08-17 | 2018-10-26 | 青岛海纳光电环保有限公司 | A kind of infrared gas sensor and infrared gas detection device |
| CN114689513A (en) * | 2020-12-26 | 2022-07-01 | 中国电子科技集团公司第二十六研究所 | Lens type gas sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG ZONOPO INTELLIGENT CO., LTD. Free format text: FORMER NAME: GUANGDONG ZONOPO INTELLIGENT TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 516006 Guangdong province Huizhou Zhongkai hi tech Industrial Development Zone No. 54 District Patentee after: Guangdong Zonopo Intelligent Co., Ltd. Address before: 516006 Guangdong province Huizhou Zhongkai hi tech Industrial Development Zone No. 54 District Patentee before: ZONOPO Intelligent Technologies Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20190131 |