CN107489455A - 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
- CN107489455A CN107489455A CN201710714868.1A CN201710714868A CN107489455A CN 107489455 A CN107489455 A CN 107489455A CN 201710714868 A CN201710714868 A CN 201710714868A CN 107489455 A CN107489455 A CN 107489455A
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- CN
- China
- Prior art keywords
- laser
- microprocessor
- remote sensing
- signal
- tuning device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
The present invention relates to the technical field of mine laser detection, in particular to the processing unit and method of laser gas remote sensing signal, it is characterised in that：The device includes microprocessor, laser tuning device, generating laser, laser receiver, and this method utilizes laser tuning compensation method.The beneficial effect of technical scheme provided by the invention is：The interference of mine coal dust and laser reflection thing 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 the technical field of mine laser detection, in particular to a kind of processing unit of smooth gas remote sensing signal
And method.
Background technology
In colliery, 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, rescue work of the remote remote sensing gas density to rescue team member has important
Safety guarantee acts on.So-called gas remote sensing technique, it is using the laser for launching methane adsorption wavelength, runs into remote objects and be transmitted back to
Come, the laser of transmitting is received by laser receiver, the concentration of remote gas is then drawn according to the attenuation for receiving laser.
This method seems fairly simple from principle, but can be tight in the decay 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 accuracy of detection of gas remote sensing is a problem.
The content 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 counted
Problem is drawn " under the detecting of colliery Disastrous environment information and memory technology and equipment 2016YFC0801808 " subsidy, it is proposed that a kind of
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, generating laser, swash
Optical pickup apparatus, the output end of microprocessor connect the input of laser tuning device, and the output termination of the laser tuning device swashs
The input of optical transmitting set, the input of the output termination microprocessor of the laser receiver.
It is the laser letter that generating laser produces three kinds of wavelength that described laser tuning device, which can tune different driving signal,
Number.
A kind of processing method of laser gas remote sensing signal, the device used in its processing method are to utilize above-mentioned one kind
The processing unit of laser gas remote sensing signal, processing method are as follows：
(a) microprocessor control laser tuning device makes generating laser produce methane (mine gas main component) suction first
The laser signal of wavelength X 1, directive distant place rib or other objects are received, laser receiver receives the laser signal of reflection, defeated
Enter microprocessor to obtain transmitting laser and receive the attenuation parameter A1 of laser；
(b) microprocessor control laser tuning device makes generating laser produce wavelength X 1+ △ λ laser signal, and directive is remote
Locate rib or other objects；Laser receiver receive reflection laser signal, input microprocessor obtain transmitting laser and
The attenuation parameter A2 of laser, same way are received, microprocessor control laser tuning device makes generating laser produce wavelength X 1- △
λ laser signal, microprocessor obtain transmitting laser and receive the attenuation parameter A3 of laser；
(c) the gas density X residing for laser reflection thing may be calculated：X=[A1+ (A2+A3)/2] k, wherein k is laser
Attenuation constant in methane environment.
The beneficial effect of technical scheme provided by the invention is：The implementation of the present 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.
Brief description of the drawings
Fig. 1 is a kind of processing method schematic diagram of laser gas remote sensing signal of the present invention.
Embodiment
A kind of processing unit of laser gas remote sensing signal, including microprocessor, laser tuning device, generating laser, swash
Optical pickup apparatus, the output end of microprocessor connect the input of laser tuning device, and the output termination of the laser tuning device swashs
The input of optical transmitting set, the input of the output termination microprocessor of the laser receiver.
It is the laser letter that generating laser produces three kinds of wavelength that described laser tuning device, which can tune different driving signal,
Number.
A kind of processing method of laser gas remote sensing signal, the 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) microprocessor control laser tuning device makes generating laser produce methane (mine gas main component) suction first
Receive the laser signal of wavelength X 1 (3.31um), directive distant place rib or other objects；Laser receiver receives swashing for reflection
Optical signal, input microprocessor obtain transmitting laser and receive the attenuation parameter A1 of laser；
(b) microprocessor control laser tuning device makes generating laser generation wavelength X 1+ △ λ (0.5um) laser signal,
Directive distant place rib or other objects；Laser receiver receives the laser signal of reflection, and input microprocessor is launched
Laser and the attenuation parameter A2 for receiving laser；In the same manner, microprocessor control laser tuning device produces generating laser
Wavelength X 1- △ λ (0.5um) laser signal, microprocessor obtain transmitting laser and receive the attenuation parameter A3 of laser；
(c) the gas density X residing for laser reflection thing may be calculated：X=[A1+ (A2+A3)/2] k
Wherein k is attenuation constant of the laser in methane environment.It can be obtained under the ideal conditions of laboratory, preparation method
It is as follows：In without dust purification experimental situation, it is provided with one end in the sealed transparent container of optical reflecting mirror, full of 1%
Methane gas, microprocessor 1 launches the laser signal of methane adsorption wavelength X 1 (3.31um) to optical reflecting mirror, receives anti-
Laser is penetrated, obtains the attenuation parameter A0 of laser, attenuation constant k=1/A0.
Claims (2)
- A kind of 1. processing unit of laser gas remote sensing signal, it is characterised in that：Including microprocessor, laser tuning device, laser Transmitter, laser receiver, the output end of microprocessor connect the input of laser tuning device, the laser tuning device it is defeated Go out to terminate the input of generating laser, the input of the output termination microprocessor of the laser receiver.
- A kind of 2. processing method of laser gas remote sensing signal, it is characterised in that：Device used in the processing method is exploitation right Profit requires a kind of processing unit of laser gas remote sensing signal described in 1, and processing method is as follows：(a) microprocessor control laser tuning device makes generating laser produce methane (mine gas main component) absorption ripple first Long λ 1 laser signal, directive distant place rib or other objects, laser receiver receive the laser signal of reflection, and input is micro- Processor obtains transmitting laser and receives the attenuation parameter A1 of laser；(b) microprocessor control laser tuning device makes generating laser generation wavelength X 1+ △ λ laser signal, directive distant place coal Wall or other objects；Laser receiver receives the laser signal of reflection, and input microprocessor obtains transmitting laser and reception The attenuation parameter A2 of laser, same way, microprocessor control laser tuning device make generating laser produce wavelength X 1- △ λ's Laser signal, microprocessor obtain transmitting laser and receive the attenuation parameter A3 of laser；(c) the gas density X residing for laser reflection thing may be calculated：X=[A1+ (A2+A3)/2] k, wherein k is laser in first Attenuation constant in alkane environment.
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 true CN107489455A (en) | 2017-12-19 |
| CN107489455B 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 |
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| CN (1) | CN107489455B (en) |
Citations (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 |
| CN106323912A (en) * | 2016-10-21 | 2017-01-11 | 中国矿业大学(北京) | Multi-parameter gas remote-sensing device for after-calamity environment of mine |
| CN106323911A (en) * | 2016-10-21 | 2017-01-11 | 中国矿业大学(北京) | Multi-light-source gas remote-sensing device for after-calamity environment of mine |
| CN106355818A (en) * | 2016-10-21 | 2017-01-25 | 中国矿业大学(北京) | Fire monitoring pre-warning device for mine worked-out area |
| CN106370623A (en) * | 2016-10-21 | 2017-02-01 | 中国矿业大学(北京) | Environment gas remote sensing equipment for mine after disaster |
| CN106401650A (en) * | 2016-10-21 | 2017-02-15 | 中国矿业大学(北京) | Multi-parameter mine laneway fire monitoring and alarming system |
| CN106448020A (en) * | 2016-10-21 | 2017-02-22 | 中国矿业大学(北京) | Exogenous mine fire monitoring alarm system |
| CN106485867A (en) * | 2016-10-21 | 2017-03-08 | 中国矿业大学(北京) | Multiparameter mine exogenous fire monitoring and alarming system |
| CN106481361A (en) * | 2016-10-21 | 2017-03-08 | 中国矿业大学(北京) | Mine laneway fire monitoring alarm system |
| CN106640195A (en) * | 2016-10-21 | 2017-05-10 | 中国矿业大学(北京) | Mine explosion monitoring and warning system |
| CN106647557A (en) * | 2016-10-21 | 2017-05-10 | 中国矿业大学(北京) | Mine explosion monitoring alarm and control system |
-
2017
- 2017-08-19 CN CN201710714868.1A patent/CN107489455B/en not_active Expired - Fee Related
Patent Citations (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 |
| CN106323912A (en) * | 2016-10-21 | 2017-01-11 | 中国矿业大学(北京) | Multi-parameter gas remote-sensing device for after-calamity environment of mine |
| CN106323911A (en) * | 2016-10-21 | 2017-01-11 | 中国矿业大学(北京) | Multi-light-source gas remote-sensing device for after-calamity environment of mine |
| CN106355818A (en) * | 2016-10-21 | 2017-01-25 | 中国矿业大学(北京) | Fire monitoring pre-warning device for mine worked-out area |
| CN106370623A (en) * | 2016-10-21 | 2017-02-01 | 中国矿业大学(北京) | Environment gas remote sensing equipment for mine after disaster |
| CN106401650A (en) * | 2016-10-21 | 2017-02-15 | 中国矿业大学(北京) | Multi-parameter mine laneway fire monitoring and alarming system |
| CN106448020A (en) * | 2016-10-21 | 2017-02-22 | 中国矿业大学(北京) | Exogenous mine fire monitoring alarm system |
| CN106485867A (en) * | 2016-10-21 | 2017-03-08 | 中国矿业大学(北京) | Multiparameter mine exogenous fire monitoring and alarming system |
| CN106481361A (en) * | 2016-10-21 | 2017-03-08 | 中国矿业大学(北京) | Mine laneway fire monitoring alarm system |
| CN106640195A (en) * | 2016-10-21 | 2017-05-10 | 中国矿业大学(北京) | Mine explosion monitoring and warning system |
| CN106647557A (en) * | 2016-10-21 | 2017-05-10 | 中国矿业大学(北京) | Mine explosion monitoring alarm and control system |
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| Publication number | Publication date |
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| CN107489455B (en) | 2019-08-20 |
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