CN204731157U - Infrared methane sensor - Google Patents
Infrared methane sensor Download PDFInfo
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- CN204731157U CN204731157U CN201520500653.6U CN201520500653U CN204731157U CN 204731157 U CN204731157 U CN 204731157U CN 201520500653 U CN201520500653 U CN 201520500653U CN 204731157 U CN204731157 U CN 204731157U
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Abstract
The utility model discloses a kind of infrared methane sensor, be electrically connected to form by optics, metering circuit, LED display and sound and light alarm device, described optics comprises infrared light supply, measures air chamber, infrared detector, described metering circuit comprises signal conditioning circuit, analog to digital conversion circuit, processor, output circuit, described infrared detector and signal conditioning circuit electrical connection, described output circuit is electrically connected with LED display and sound and light alarm device respectively; Described measurement air chamber is non-spectral formula reflection air chamber, includes reflective mirror and optical filter, after described infrared detector is arranged at optical filter.Infrared detector is for detecting the detection of gas remaining luminous energy after measuring air chamber and absorbing.The utility model detector arrangement is simple, and with low cost, good stability, highly sensitive, can analyze minimum gas, anti-background gas interference performance is strong.
Description
Technical field
The utility model belongs to gas detection sensor field, particularly relates to a kind of infrared methane sensor.
Background technology
Methane transducer in mine safety detection system for colliery roadway, the places such as getting working face, goaf, return aircourse, dynamo-electric chamber monitor methane (or other hydrocarbon gas) concentration continuously, when methane content exceeding preset limit, automatically can send sound, light is reported to the police, coal mine underground operators can be supplied, CH_4 detection personnel, down-hole managerial personnel etc. carry with use, also can fix for above-mentioned place.
Tradition methane transducer not only complex structure, cost is high, and accuracy of detection is lower, adaptive capacity to environment is weak, stability is not enough.
Utility model content
In order to solve the problem of above-mentioned existing traditional methane transducer, the utility model proposes a kind of infrared methane sensor, the receptivity of tested methane gas to Infrared is the basis of infrared methane sensor analytical gas kind, concentration, and absorbing rule meets Lambert-Beer's law.
The utility model is achieved through the following technical solutions:
Infrared methane sensor, be electrically connected to form by optics, metering circuit, LED display and sound and light alarm device, described optics comprises infrared light supply, measures air chamber, infrared detector, described metering circuit comprises signal conditioning circuit, analog to digital conversion circuit, processor, output circuit, described infrared detector and signal conditioning circuit electrical connection, described output circuit is electrically connected with LED display and sound and light alarm device respectively.Infrared detector is for detecting the detection of gas remaining infrared luminous energy after measuring air chamber and absorbing, it outputs signal instability, there is undesired signal, directly analog to digital conversion cannot become electric signal, need to amplify signal condition through signal conditioning circuit, then convert electric signal to analog to digital conversion circuit.
Further, described infrared light supply is arranged to be measured in air chamber, and described measurement air chamber is non-spectral formula reflection air chamber, includes reflective mirror and optical filter, after described infrared detector is arranged at optical filter.
Further, described infrared light supply is wide spectrum light source, spectrum cover wavelength from 1 μm to 5 μm, its radiation-curable go out continuous light source or intermittent light source.The luminous energy that continuous light source sends is continuously.By light source Drive and Control Circuit, light is modulated, produce the infrared radiating light of characteristic frequency; Intermittent light source is the luminous energy sent is time dependent, such as light-pulse generator.By the frequency of the electric signal (voltage or electric current) of control inputs light source, the infrared radiating light of characteristic frequency can be produced.
Further, described measurement air chamber section is circular, and described optical filter section is circular.Round non-spectral formula reflection air chamber, effectively lengthens optical path distance and reduces sensor bulk.
Further, described processor is 16/32 bit microprocessor based on ARM kernel, and the signal input part of described processor connects analog to digital conversion circuit, and the signal output part of described processor connects output circuit.
Further, described sound and light alarm device includes hummer and light emitting diode.
Compared with prior art, the beneficial effects of the utility model are: good stability, are highly suitable for line and use; Highly sensitive; Anti-background gas interference performance is strong, only has and is just had sensitivity by the gas in detecting device corresponding to gas absorption; Ambient temperature effect is little.Highly sensitive, can analyze minimum gas, detector arrangement is simple, with low cost.
Accompanying drawing explanation
Fig. 1 is structural schematic block diagram of the present utility model;
Fig. 2 is the cross-sectional view of measurement air chamber of the present utility model;
Wherein: 1, optics; 2, metering circuit; 3, infrared light supply; 4, air chamber is measured; 401, reflective mirror; 402, optical filter; 5, infrared detector; 6, signal conditioning circuit; 7, analog to digital conversion circuit; 8, processor; 9, output circuit; 10, LED display; 11, sound and light alarm device.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1 and Figure 2, infrared methane sensor, be electrically connected to form by optics 1, metering circuit 2, LED display 9 and sound and light alarm device 10, described optics 1 comprises infrared light supply 3, measures air chamber 4, infrared detector 5, described metering circuit 2 comprises signal conditioning circuit 6, analog to digital conversion circuit 7, processor 8, output circuit 9, described infrared detector 5 and signal conditioning circuit 6 are electrically connected, and described output circuit 9 is electrically connected with LED display 10 and sound and light alarm device 11 respectively.Infrared detector 5 is for detecting the detection of gas remaining luminous energy after measuring air chamber 4 and absorbing.
Described infrared light supply 3 is arranged to be measured in air chamber 4, and described measurement air chamber 4 is non-spectral formula reflection air chamber, includes reflective mirror 401 and optical filter 402, after described infrared detection 5 is arranged at optical filter 402.
Described infrared light supply 3 is wide spectrum light source, spectrum cover wavelength from 1 μm to 5 μm, its radiation-curable go out continuous light source or intermittent light source.The luminous energy that continuous light source sends is continuously.By light source Drive and Control Circuit, light is modulated, produce the infrared radiating light of characteristic frequency; Intermittent light source is the luminous energy sent is time dependent, such as light-pulse generator.By the frequency of the electric signal (voltage or electric current) of control inputs light source, the infrared radiating light of characteristic frequency can be produced.
Described measurement air chamber 4 section is circular, and described optical filter 402 section is circular.Round non-spectral formula reflection air chamber, effectively lengthens optical path distance and reduces sensor bulk.
Described processor 8 is 16/32 bit microprocessor based on ARM kernel, and the signal input part of described processor 8 connects analog to digital conversion circuit 7, and the signal output part of described processor 8 connects output circuit 9.
Described sound and light alarm device 11 includes hummer and light emitting diode.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. infrared methane sensor, it is characterized in that: by optics (1), metering circuit (2), LED display (10) and sound and light alarm device (11) are electrically connected to form, described optics (1) comprises infrared light supply (3), measure air chamber (4), infrared detector (5), described metering circuit (2) comprises signal conditioning circuit (6), analog to digital conversion circuit (7), processor (8), output circuit (9), described infrared detector (5) and signal conditioning circuit (6) electrical connection, described output circuit (8) is electrically connected with LED display (10) and sound and light alarm device (11) respectively,
Described infrared light supply (3) is arranged to be measured in air chamber (4), described measurement air chamber (4) is non-spectral formula reflection air chamber, include reflective mirror (401) and optical filter (402), after described infrared detector (5) is arranged at optical filter (402).
2. infrared methane sensor according to claim 1, is characterized in that: described infrared light supply (3) is wide spectrum light source, its radiation-curable go out continuous light source or intermittent light source.
3. infrared methane sensor according to claim 1, is characterized in that: described measurement air chamber (4) section is for circular, and described optical filter (402) section is circular.
4. infrared methane sensor according to claim 1, it is characterized in that: described processor (8) is 16/32 bit microprocessor based on ARM kernel, the signal input part of described processor (8) connects analog to digital conversion circuit (7), and the signal output part of described processor (8) connects output circuit (9).
5. infrared methane sensor according to claim 1, is characterized in that: described sound and light alarm device (11) includes hummer and light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500653.6U CN204731157U (en) | 2015-07-10 | 2015-07-10 | Infrared methane sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520500653.6U CN204731157U (en) | 2015-07-10 | 2015-07-10 | Infrared methane sensor |
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| CN204731157U true CN204731157U (en) | 2015-10-28 |
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| CN201520500653.6U Active CN204731157U (en) | 2015-07-10 | 2015-07-10 | Infrared methane sensor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442380A (en) * | 2016-08-30 | 2017-02-22 | 北京千安哲信息技术有限公司 | Methane detection device and method |
| CN107490556A (en) * | 2017-04-19 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of infrared combustable gas concentration detecting system |
| CN111188998A (en) * | 2020-02-18 | 2020-05-22 | 西安石油大学 | Oil real-time monitoring equipment with a plurality of installation position supports |
| CN112630218A (en) * | 2018-10-19 | 2021-04-09 | 清华大学合肥公共安全研究院 | Device for detecting gas components |
| CN113189928A (en) * | 2020-01-14 | 2021-07-30 | 湖北师范大学 | Mining flame-proof and intrinsic safety type PLC control box |
| WO2022252282A1 (en) * | 2021-06-03 | 2022-12-08 | 深圳市诺安传感技术有限公司 | Long-optical-path micro infrared gas chamber and infrared gas sensor |
-
2015
- 2015-07-10 CN CN201520500653.6U patent/CN204731157U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442380A (en) * | 2016-08-30 | 2017-02-22 | 北京千安哲信息技术有限公司 | Methane detection device and method |
| CN107490556A (en) * | 2017-04-19 | 2017-12-19 | 安徽华脉科技发展有限公司 | A kind of infrared combustable gas concentration detecting system |
| CN112630218A (en) * | 2018-10-19 | 2021-04-09 | 清华大学合肥公共安全研究院 | Device for detecting gas components |
| CN112630218B (en) * | 2018-10-19 | 2023-12-05 | 清华大学合肥公共安全研究院 | Device for detecting gas component |
| CN113189928A (en) * | 2020-01-14 | 2021-07-30 | 湖北师范大学 | Mining flame-proof and intrinsic safety type PLC control box |
| CN111188998A (en) * | 2020-02-18 | 2020-05-22 | 西安石油大学 | Oil real-time monitoring equipment with a plurality of installation position supports |
| CN111188998B (en) * | 2020-02-18 | 2022-01-14 | 西安石油大学 | Oil real-time monitoring equipment with a plurality of installation position supports |
| WO2022252282A1 (en) * | 2021-06-03 | 2022-12-08 | 深圳市诺安传感技术有限公司 | Long-optical-path micro infrared gas chamber and infrared gas sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Mining infrared methane sensor Effective date of registration: 20190527 Granted publication date: 20151028 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Changqing branch Pledgor: JINAN HUOSHAO SAFETY TECHNOLOGY CO.,LTD. Registration number: 2019370000115 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221231 Granted publication date: 20151028 Pledgee: Qilu bank Limited by Share Ltd. Ji'nan Changqing branch Pledgor: JINAN HUOSHAO SAFETY TECHNOLOGY CO.,LTD. Registration number: 2019370000115 |