CN107489455B - A kind of processing unit and method of laser gas remote sensing signal - Google Patents
A kind of processing unit and method of laser gas remote sensing signal Download PDFInfo
- Publication number
- CN107489455B CN107489455B CN201710714868.1A CN201710714868A CN107489455B CN 107489455 B CN107489455 B CN 107489455B CN 201710714868 A CN201710714868 A CN 201710714868A CN 107489455 B CN107489455 B CN 107489455B
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- China
- Prior art keywords
- laser
- microprocessor
- tuning device
- signal
- remote sensing
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Links
- 238000000034 method Methods 0.000 title abstract description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 13
- 238000003672 processing method Methods 0.000 claims description 11
- 239000003245 coal Substances 0.000 claims description 8
- 238000001179 sorption measurement Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 6
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention relates to the technical fields of mine laser detection, specifically refer to the processing unit and method of laser gas remote sensing signal, it is characterized by: the device includes microprocessor, laser tuning device, laser emitter, laser receiver, this method utilizes laser tuning compensation method.The beneficial effect of the technical scheme provided by the present invention is that: the interference of mine coal dust and laser reflection object to gas remote sensing signal can be overcome, to obtain the gas density parameter of remote Minepit environment.
Description
Technical field
The present invention relates to a kind of processing of the technical field of mine laser detection, in particular to laser gas remote sensing signal dresses
It sets and method.
Background technique
In coal mine, gas management is the effective means for preventing gas explosion accident, and current various gas measuring methods are
The gas density of environment near detection sensor, remote remote sensing gas density have the rescue work of rescue team member important
Safety guarantee effect.So-called gas remote sensing technique is to encounter remote objects using the laser of transmitting methane adsorption wavelength and be transmitted back to
Come, the laser of transmitting is received by laser receiver, the concentration of remote gas is then obtained according to the attenuation for receiving laser.
This method seems fairly simple from principle, but tight in the decaying meeting of the mine of complex environment, coal dust and reverberation to laser
Ghost image rings the precision of gas remote sensing, how to solve these interference, it is ensured that the detection accuracy of gas remote sensing is a problem.
Summary of the invention
In order to solve the disturbing factor of gas remote sensing under mine adverse circumstances, the present invention is researched and developed in 13 state keys and is counted
Under the subsidy for drawing project " detecting of coal mine Disastrous environment information and memory technology and equipment 2016YFC0801808 ", one kind is proposed
The processing method of laser gas remote sensing signal.
A kind of processing unit of laser gas remote sensing signal, including microprocessor, laser tuning device, laser emitter, swash
Optical receiver apparatus, the output end of microprocessor connect the input terminal of laser tuning device, and the output termination of the laser tuning device swashs
The input terminal of optical transmitting set, the input terminal of the output termination microprocessor of the laser receiver.
It is the laser letter that laser emitter generates three kinds of wavelength that the laser tuning device, which can tune different driving signal,
Number.
A kind of processing method of laser gas remote sensing signal, device used in the processing method are to utilize above-mentioned one kind
The processing unit of laser gas remote sensing signal, processing method are as follows:
(a) laser that microprocessor control laser tuning device makes laser emitter generate methane adsorption wavelength X 1 first is believed
Number, directive distant place coal wall or other objects, laser receiver receive the laser signal of reflection, and input microprocessor is sent out
Penetrating laser and receiving the difference of laser is attenuation parameter A1；
(b) microprocessor control laser tuning device makes the laser signal of laser emitter generation wavelength λ 1+ △ λ, and directive is remote
Locate coal wall or other objects；Laser receiver receive reflection laser signal, input microprocessor obtain transmitting laser with
The difference for receiving laser is attenuation parameter A2, and same way, microprocessor, which controls laser tuning device, makes laser emitter generate wave
The laser signal of long λ 1- △ λ, it is attenuation parameter A3 that microprocessor, which obtains transmitting laser and receives the difference of laser,；
(c) gas density X locating for laser reflection object is calculated are as follows: X=[A1+ (A2+A3)/2] k, wherein k is laser in first
Attenuation constant in alkane environment.
The beneficial effect of the technical scheme provided by the present invention is that: implementation of the invention, which can obtain, preferably overcomes mine to dislike
Bad environment obtains accurate gas Remote sensing parameters to the interference effect of gas remote sensing signal.
Detailed description of the invention
Fig. 1 is a kind of processing method schematic diagram of laser gas remote sensing signal of the present invention.
Specific embodiment
A kind of processing unit of laser gas remote sensing signal, including microprocessor, laser tuning device, laser emitter, swash
Optical receiver apparatus, the output end of microprocessor connect the input terminal of laser tuning device, and the output termination of the laser tuning device swashs
The input terminal of optical transmitting set, the input terminal of the output termination microprocessor of the laser receiver.
It is the laser letter that laser emitter generates three kinds of wavelength that the laser tuning device, which can tune different driving signal,
Number.
A kind of processing method of laser gas remote sensing signal, device used in the processing method are swashed using above-mentioned one kind
The processing unit of light gas remote sensing signal, processing method are as follows:
(a) laser that microprocessor control laser tuning device makes laser emitter generate methane adsorption wavelength X 1 first is believed
Number, directive distant place coal wall or other objects, laser receiver receive the laser signal of reflection, and input microprocessor is sent out
Penetrating laser and receiving the difference of laser is attenuation parameter A1；
(b) microprocessor control laser tuning device makes the laser signal of laser emitter generation wavelength λ 1+ △ λ, and directive is remote
Locate coal wall or other objects；Laser receiver receive reflection laser signal, input microprocessor obtain transmitting laser with
The difference for receiving laser is attenuation parameter A2, and same way, microprocessor, which controls laser tuning device, makes laser emitter generate wave
The laser signal of long λ 1- △ λ, it is attenuation parameter A3 that microprocessor, which obtains transmitting laser and receives the difference of laser,；
(c) gas density X locating for laser reflection object is calculated are as follows: X=[A1+ (A2+A3)/2] k, wherein k is laser in first
Attenuation constant in alkane environment.
It can be obtained under the ideal conditions of laboratory, preparation method is as follows: in no dust purification experimental situation, at one end
It is equipped in the sealed transparent container of optical reflecting mirror, full of 1% methane gas, microprocessor 1 emits methane adsorption wave
The laser signal of long λ 1 (3.31um) receives reflection laser, obtains the attenuation parameter A0 of laser, decaying is normal to optical reflecting mirror
Number k=1/A0.
Claims (1)
1. a kind of processing method of laser gas remote sensing signal, it is characterised in that: the processing unit that the processing method uses includes
Microprocessor, laser tuning device, laser emitter, laser receiver, the output end of microprocessor connect laser tuning device
Input terminal, the input terminal of the output termination laser emitter of the laser tuning device, the output termination of the laser receiver
The input terminal of microprocessor；
Processing method is as follows:
(a) microprocessor control laser tuning device makes laser emitter generate the laser signal of methane adsorption wavelength X 1 first, penetrates
Distally coal wall or other objects, laser receiver receive the laser signal of reflection, and input microprocessor obtains transmitting and swashs
Light and the difference for receiving laser are attenuation parameter A1；
(b) microprocessor control laser tuning device makes the laser signal of laser emitter generation wavelength λ 1+ △ λ, directive distant place coal
Wall or other objects；Laser receiver receives the laser signal of reflection, and input microprocessor obtains transmitting laser and receives
The difference of laser is attenuation parameter A2, and same way, microprocessor, which controls laser tuning device, makes laser emitter generation wavelength λ 1-
The laser signal of △ λ, it is attenuation parameter A3 that microprocessor, which obtains transmitting laser and receives the difference of laser,；
(c) gas density X locating for laser reflection object is calculated are as follows: X=[A1+ (A2+A3)/2] k, wherein k is laser in methane ring
Attenuation constant in border.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714868.1A CN107489455B (en) | 2017-08-19 | 2017-08-19 | A kind of processing unit and method of laser gas remote sensing signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714868.1A CN107489455B (en) | 2017-08-19 | 2017-08-19 | A kind of processing unit and method of laser gas remote sensing signal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107489455A CN107489455A (en) | 2017-12-19 |
| CN107489455B true CN107489455B (en) | 2019-08-20 |
Family
ID=60645462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710714868.1A Expired - Fee Related CN107489455B (en) | 2017-08-19 | 2017-08-19 | A kind of processing unit and method of laser gas remote sensing signal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107489455B (en) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489239A (en) * | 1982-09-24 | 1984-12-18 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Portable remote laser sensor for methane leak detection |
| US20080029702A1 (en) * | 2006-07-23 | 2008-02-07 | Wei Xu | Method and apparatus for detecting methane gas in mines |
| CN106481361A (en) * | 2016-10-21 | 2017-03-08 | 中国矿业大学(北京) | Mine laneway fire monitoring alarm system |
| CN106401650B (en) * | 2016-10-21 | 2020-11-10 | 中国矿业大学(北京) | Multi-parameter mine roadway fire monitoring and alarming system |
| CN106323911B (en) * | 2016-10-21 | 2023-11-14 | 中国矿业大学(北京) | Multi-light source mine post-disaster environmental gas remote sensing equipment |
| CN106355818B (en) * | 2016-10-21 | 2021-03-30 | 中国矿业大学(北京) | Mine goaf fire monitoring and early warning device |
| CN106448020B (en) * | 2016-10-21 | 2021-02-02 | 中国矿业大学(北京) | Mine external fire monitoring and alarming system |
| CN106640195B (en) * | 2016-10-21 | 2020-11-27 | 中国矿业大学(北京) | Mine explosion monitoring and alarming system |
| CN106370623B (en) * | 2016-10-21 | 2023-10-24 | 中国矿业大学(北京) | Mine post-disaster environmental gas remote sensing equipment |
| CN106323912B (en) * | 2016-10-21 | 2023-11-17 | 中国矿业大学(北京) | Multi-parameter mine post-disaster environmental gas remote sensing equipment |
| CN106647557B (en) * | 2016-10-21 | 2024-02-06 | 中国矿业大学(北京) | Mine explosion monitoring alarm and control system |
| CN106485867B (en) * | 2016-10-21 | 2021-02-02 | 中国矿业大学(北京) | Multi-parameter mine external cause fire monitoring and alarming system |
-
2017
- 2017-08-19 CN CN201710714868.1A patent/CN107489455B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN107489455A (en) | 2017-12-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190820 Termination date: 20200819 |
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| CF01 | Termination of patent right due to non-payment of annual fee |