CN105866054B - A kind of device that coal mine gas remotely monitors and monitoring method - Google Patents
A kind of device that coal mine gas remotely monitors and monitoring method Download PDFInfo
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- CN105866054B CN105866054B CN201610157941.5A CN201610157941A CN105866054B CN 105866054 B CN105866054 B CN 105866054B CN 201610157941 A CN201610157941 A CN 201610157941A CN 105866054 B CN105866054 B CN 105866054B
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- air pump
- illuminophore
- light source
- light
- flexible grating
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000003245 coal Substances 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 title claims abstract description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 84
- DMLAVOWQYNRWNQ-UHFFFAOYSA-N azobenzene Chemical compound C1=CC=CC=C1N=NC1=CC=CC=C1 DMLAVOWQYNRWNQ-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000003287 optical effect Effects 0.000 claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 7
- 238000010183 spectrum analysis Methods 0.000 claims abstract description 7
- 238000001228 spectrum Methods 0.000 claims description 25
- 230000003750 conditioning effect Effects 0.000 claims description 14
- 230000003595 spectral effect Effects 0.000 claims description 11
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 3
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 238000004611 spectroscopical analysis Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 61
- 238000004458 analytical method Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 206010067171 Regurgitation Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005305 interferometry Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000862 absorption spectrum Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3504—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing gases, e.g. multi-gas analysis
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
Abstract
The invention discloses a kind of device that coal mine gas remotely monitors and monitoring methods, including are arranged in mine and transparent air pump that can be by optical drive and flexible grating；Further include the light source generation being arranged outside mine and signal acquisition process unit, the light that light source generation is sent out is irradiated to transparent air pump and flexible grating by optical cable, light source generation is connected with signal acquisition process unit, and flexible grating is connected by optical cable with signal acquisition process unit；It is equipped with check valve at the top of transparent air pump, transparent air pump bottom is the organic film I of the illuminophore containing azobenzene；Flexible grating lower end is equipped with the organic film II of the illuminophore containing azobenzene.Mine outer light source generating unit is connected by the present invention by optical fiber with transparent air pump in mine and flexible grating, the long-range spectrum analysis of Full-optical, low cost can be carried out to methane gas, realize real-time, the on-line monitoring to gas multiple components, presence without electronic component in mine improves the safety of methane gas monitoring.
Description
Technical field
The invention belongs to Mine Safety Appliances technical field, it is related to a kind of device that coal mine gas remotely monitors and monitoring side
A kind of method, and in particular to device and method that the coal mine gas based on optical drive flexibility grating and flexible pump remotely monitors.
Background technology
In progress of coal mining, gas safety has become the significant obstacle of limitation coal mine output.Therefore, reliable, accurate,
Quickly, low cost, methane gas concentration is monitored in real time and early warning, to effectively preventing mine gas accident to closing weight
It wants.
The main method for being presently used for monitoring methane gas (about 83%~89% is methane gas) concentration has：Catalysis combustion
Burning method, Semiconductor gas sensors method, optical interferometry, gas chromatography and infra-red sepectrometry etc..In Semiconductor gas sensors method, sensing element holds
It is vulnerable to the interference such as noise, toxic gas, accuracy is relatively low, and need to be monitored in conjunction with other monitoring devices；Optical interferometry
Concentration index is not intuitive, apparent by interference such as pressure, temperature, humidity, and the influence for being especially vulnerable to the interference of other gases is serious；Gas phase
Chromatographic operating temperature height, stability and consistency are poor, and instrument is heavier, it is difficult to realize real-time, on-line checking, actually answer
With hindered；Thermocatalysis principle monitors gas, because its is cheap, is easy to the use of coal mine large area, and application is more, but its
Monitoring composition is single, and early warning function is obviously insufficient, needs often to correct zeroing, and service life is short, and is not suitable for high concentration
Gas safety detection etc..Existing technology cannot still fully meet present coal industry field to highly sensitive, intelligent early warning and alarming
Demand.
The characteristics of infra-red sepectrometry is that measurement range is wide, accuracy of detection is high, strong antijamming capability, can remote telemetering, phase
It is more with the obvious advantage than other methods.But it is based on " single line spectrum " measuring principle more at present, gas multiple components can not be carried out at the same time
Monitoring, and there are security risks such as short circuit, electric discharges at gas surveying, device is expensive, system is complex, it is difficult to real
The gas multiple components spectrum analysis without electronic device, low cost, interferes its popularization and application at existing sensor side.
Invention content
In order to overcome the problems of the above-mentioned prior art, the purpose of the present invention is to provide a kind of coal mine gases remotely to supervise
The device and monitoring method of survey, the apparatus structure reasonable design is easy to operate, can be realized to gas by the device and method
Gas concentration carries out real-time monitoring reliable, accurate, quickly, inexpensive.
The present invention is to be achieved through the following technical solutions：
A kind of device that coal mine gas remotely monitors, including be arranged in mine and can be by the transparent air pump of optical drive
With flexible grating；Further include the light source generation being arranged outside mine and signal acquisition process unit, light source generation hair
The light gone out is irradiated to transparent air pump and flexible grating by optical cable, and light source generation is interacted with signal acquisition process unit, soft
Property grating is connected by optical cable with signal acquisition process unit；
It is equipped with check valve at the top of transparent air pump, transparent air pump bottom is the organic film I of the illuminophore containing azobenzene；It is soft
Property grating lower end be equipped with the illuminophore containing azobenzene organic film II.
The light source generation includes wide spectrum infrared light supply, the first ultraviolet source, the first visible light source, second
Ultraviolet source and the second visible light source；Wherein, the light that wide spectrum infrared light supply is sent out is by fiber-optic illuminated transparent air pump, and
The illuminophore containing azobenzene that the light that one ultraviolet source and the first visible light source are sent out passes through fiber-optic illuminated transparent air pump bottom
Organic film I；The light that second ultraviolet source and the second visible light source are sent out passes through fiber-optic illuminated flexible grating lower end
The organic film II of the illuminophore containing azobenzene.
After the light that wide spectrum infrared light supply is sent out is by fiber-optic illuminated to transparent air pump, then it is incident upon on flexible grating.
When the first ultraviolet source or the first visible light source are sent out by fiber-optic illuminated transparent air pump bottom containing azobenzene
When the organic film I of light blob, the organic film I of azobenzene illuminophore is deformed upon.
When the light that the second ultraviolet source and the second visible light source are sent out containing by fiber-optic illuminated flexible grating lower end
When the organic film II of azobenzene illuminophore, the organic film II of the illuminophore containing azobenzene is deformed upon.
The signal acquisition process unit includes computer, detector and signal conditioning circuit, and flexible grating passes through cable
It is connected with the input terminal of detector, the output end of detector is connected with the input terminal of signal conditioning circuit, signal conditioning circuit
Output end is connected with computer.
The organic film II of the illuminophore containing azobenzene is fixed on flexible grating lower end by fixing piece.
The invention also discloses the methods that the device remotely monitored based on above-mentioned coal mine gas is remotely monitored, including
Following steps：
1) wide spectrum infrared light supply is opened, the flexible air pump of the light sent out irradiation is made；
2) the first ultraviolet source or the first visible light source are opened, the illuminophore containing azobenzene of transparent air pump bottom is irradiated
Organic film I, the organic film I of the illuminophore containing azobenzene deforms upon, the device in Gas to be measured in transparent air pump sucking mine
Body carries out real-time sampling to methane gas to be measured；
3) after methane gas to be measured absorbs the light that wide spectrum infrared light supply is sent out, the second ultraviolet source is opened or second can
Light-exposed light source, irradiates the organic film II that flexible grating lower end is equipped with the illuminophore containing azobenzene, the illuminophore containing azobenzene it is organic
Film II is deformed upon, and flexible grating pitch variation obtains the spectral information of methane gas multiple components to be measured；
4) spectral information of methane gas multiple components to be measured is delivered to signal acquisition process by flexible grating by optical fiber
Unit realizes real-time monitoring and the multiple components spectrum analysis of methane gas to be measured.
The spectral information of flexible grating output is delivered to computer by detector and signal conditioning circuit, and light is calculated
Modal data.
Compared with prior art, the present invention has technique effect beneficial below：
The device that coal mine gas disclosed by the invention remotely monitors, including be arranged in mine and can be by optical drive
Transparent air pump and flexible grating；Further include the light source generation being arranged outside mine and signal acquisition process unit, transparent
The top of air pump is equipped with check valve, and transparent air pump bottom is the organic film I of the illuminophore containing azobenzene, and flexible grating lower end is equipped with
The organic film II of the illuminophore containing azobenzene can make to send out containing azobenzene using the photic suitable regurgitation structure of azobenzene illuminophore
The organic film I of light blob deforms, and to make transparent air pump deform upon, sucks methane gas to be measured, can pass through adjusting
Light source sends out the intensity of illumination of light, time, to control the deformation of transparent air pump.Similarly, the photic suitable of azobenzene illuminophore is utilized
Regurgitation structure can make the organic film II of the illuminophore containing azobenzene deform, the pitch of flexible grating is made also to change,
The accurate spectral information of methane gas multiple components to be measured can be exported.The present invention is by optical fiber by mine outer light source generating unit
It is connected with transparent air pump in mine and flexible grating, so that it may which to carry out Full-optical to methane gas, the long-range spectrum of low cost divides
Real-time, on-line monitoring to gas multiple components, the interior presence without electronic component of mine, to improve device in Gas are realized in analysis
The safety of body monitoring.
It is disclosed by the invention that the method that coal mine gas remotely monitors, the light that broad spectrum light source is sent out are carried out based on above-mentioned apparatus
Irradiate transparent air pump, the method to be deformed using the photic suitable regurgitation structure of azobenzene illuminophore, two ultraviolet sources and
The combination of visible light source respectively drives deformation and the pitch variation of transparent air pump and flexible grating, is absorbed through methane gas to be measured
Wide spectrum light afterwards is changed by the pitch of flexible grating, obtains the absorption spectrum of methane gas to be measured, uses infrared spectrum point
The method of analysis determines methane gas concentration and monitors the multiple components of methane gas.Due to wide spectrum light, ultraviolet light, visible
Light is transferred to by optical fiber in mine, and the grid of flexible grating are accurately adjusted by intensity of illumination, the time etc. that control ultraviolet light
Away from, and infrared spectrum analysis methane gas to be measured is utilized, the presence without electronic component in mine, to improve methane gas prison
The safety of survey realizes non-the real-time of single composition of methane gas, Full-optical, long-range monitoring.
Description of the drawings
Fig. 1 is the device signal that the coal mine gas based on optical drive flexibility grating and flexible pump of the present invention remotely monitors
Figure；
Fig. 2 is the principle schematic diagram of transparent air pump；Wherein, (a) is that the first ultraviolet light and the first visible light are not beaten
When opening, air pump is original state；(b) it is that the first ultraviolet light is opened, the first visible light is not switched on, and air pump sucks device in Gas to be measured
Body；(c) it is that the first ultraviolet light is closed, the first visible light is opened, and air pump reverts to original state；
Fig. 3 is the principle schematic diagram of flexible grating, wherein (a) is that the second ultraviolet light and the second visible light are not beaten
When opening, flexible grating is initial pitch and slit width；(b) it is that the second ultraviolet light is opened, the second visible light is not switched on, flexible grating
Pitch and slit width become larger；(c) it is that the second ultraviolet light is closed, the second visible light is opened, and flexible grating reverts to initial pitch and seam
It is wide.
Wherein, 1 is computer；2 be wide spectrum infrared light supply；3 be transparent air pump；4 be methane gas to be measured；5 be first
Ultraviolet source；6 be the first visible light source；7 be the second ultraviolet source；8 be the second visible light source；9 be flexible grating；
10 be detector；11 be signal conditioning circuit, and 12 be check valve, and 13 be the organic film I of the illuminophore containing azobenzene, and 14 be fixation
Part, 15 be the organic film II of the illuminophore containing azobenzene.
Specific implementation mode
With reference to specific embodiment, the present invention is described in further detail, it is described be explanation of the invention and
It is not to limit.
As shown in Figure 1, including being arranged in mine and can be by the transparent air pump 3 and flexible grating 9 of optical drive；Also wrap
The light source generation being arranged outside mine and signal acquisition process unit are included, the light that light source generation is sent out is shone by optical cable
It is mapped to transparent air pump 3 and flexible grating 9, light source generation is interacted with signal acquisition process unit, and flexible grating 9 passes through optical cable
It is connected with signal acquisition process unit；
It is equipped with check valve 12 at the top of transparent air pump 3,3 bottom of transparent air pump is the organic film of the illuminophore containing azobenzene
I13；9 lower end of flexible grating is equipped with the organic film II15 of the illuminophore containing azobenzene.
The light source generation include wide spectrum infrared light supply 2, the first ultraviolet source 5, the first visible light source 6,
Second ultraviolet source 7 and the second visible light source 8；Wherein, the light that wide spectrum infrared light supply 2 is sent out passes through fiber-optic illuminated transparent
The light that air pump 3, the first ultraviolet source 5 and the first visible light source 6 are sent out is by fiber-optic illuminated 3 bottom of transparent air pump containing even
The organic film I13 of pyridine illuminophore；The light that second ultraviolet source 7 and the second visible light source 8 are sent out passes through fiber-optic illuminated
The organic film II15 of the illuminophore containing azobenzene of 9 lower end of flexible grating.
The signal acquisition process unit includes computer 1, detector 10 and signal conditioning circuit 11, and flexible grating 9 is logical
It crosses cable with the input terminal of detector 10 to be connected, the output end of detector 10 is connected with the input terminal of signal conditioning circuit 11, letter
The output end of number modulate circuit 11 is connected with computer 1.
Computer 1 is connected with wide spectrum infrared light supply 2, and the light that the wide spectrum infrared light supply 2 outside mine is sent out passes through optical fiber
The transparent air pump 3 in mine is irradiated, computer 1 is connected with the first ultraviolet source 5, the first visible light source 6 outside mine, single
It is connected to valve 12 with transparent air pump 3, opens the first ultraviolet source 5, the light that the first ultraviolet source 5 is sent out passes through fiber-optic illuminated
The organic film I 13 of transparent air pump 3 in mine, the illuminophore containing azobenzene deforms, and methane gas 4 to be measured passes through list
Enter transparent air pump 3 to valve 12, close the first ultraviolet source 5, open the first visible light source 6, transparent air pump 3 restores original
Shape, sample methane gas 4 to be measured.
Computer 1 is connected with the second ultraviolet source 7, the second visible light source 8 outside mine, opens the second ultraviolet light light
Source 7, by the fiber-optic illuminated flexible grating 9 in mine, the illuminophore containing azobenzene has the light that the second ultraviolet source 8 is sent out
Machine film II is fixed at 15 both ends using fixing piece 14, the structure of azobenzene one's share of expenses for a joint undertaking in the organic film II 15 of the illuminophore containing azobenzene
As transformation, orderly Azobenzene mesogen becomes unordered, and to deform, the pitch of flexible grating 9 changes, and closes
Second ultraviolet source 7 opens the second visible light source 8, the cis- azo in the organic film II 15 of the illuminophore containing azobenzene
Benzene is restored to anti conformation, and flexible grating 9 restores original screen periods, outside 9 output end of flexible grating in mine and mine
10 input terminal of detector be connected, be connected with computer 1 through signal conditioning circuit 11.
Based on the method that the device that coal mine gas disclosed above remotely monitors remotely is monitored, with wide spectrum infrared light
Light source of the source as spectrum analysis, the light sent out using wide spectrum infrared light supply irradiate the methane gas to be measured in transparent air pump.
Then, the first ultraviolet source and the first visible light source drive transparent air pump as driving light source, are sent out by adjusting light source
The intensity of illumination of light, time, to control the deformation of optical drive flexible pump.Second ultraviolet source and the second visible light source conduct
Light source is driven, flexible grating is driven, by adjusting " driving light intensity ", realizes the continuous change of flexible grating pitch and accurate control
System.Finally, the spectral information of flexible grating output is sent into computer by detector and signal conditioning circuit, to calculate light extraction
Modal data realizes the spectrum analysis and monitoring in real time of methane gas multiple components to be measured.
Specifically include following steps：
1) wide spectrum infrared light supply 2 is opened, the light sent out irradiation flexibility air pump 3 is made；
2) the first ultraviolet source 5 or the first visible light source 6 are opened, being sent out containing azobenzene for 3 bottom of transparent air pump is irradiated
The organic film I 13 of the organic film I 13 of light blob, the illuminophore containing azobenzene are deformed upon, and transparent air pump 3 sucks in mine
Methane gas 4 to be measured carries out real-time sampling to methane gas to be measured；
3) after methane gas 4 to be measured absorbs the light that wide spectrum infrared light supply 2 is sent out, the second ultraviolet source 7 or the is opened
Two visible light sources 8 irradiate the organic film II15 that 9 lower end of flexible grating is equipped with the illuminophore containing azobenzene, shine containing azobenzene
The organic film II15 of group is deformed upon, the variation of 9 pitch of flexible grating, obtains the spectrum letter of methane gas multiple components to be measured
Breath；
4) spectral information of methane gas multiple components to be measured is delivered to signal acquisition process by flexible grating 9 by optical fiber
Unit realizes real-time monitoring and the multiple components spectrum analysis of methane gas to be measured.
Referring to Fig. 2, wherein when (a) is that the first ultraviolet light and the first visible light are not switched on, air pump is original state；(b)
It is opened for the first ultraviolet light, the first visible light is not switched on, and air pump sucks methane gas to be measured；(c) it is that the first ultraviolet light is closed, the
One visible light is opened, and air pump reverts to original state.Broad spectrum light source 2 irradiates the methane gas to be measured 4 in transparent air pump 3, wide
Spectral light is absorbed through methane gas 4 to be measured, the first ultraviolet source 5 and the first visible light source 6 driving optical drive flexible pump 3.
Referring to Fig. 3, wherein when (a) is that the second ultraviolet light and the second visible light are not switched on, flexible grating is initial pitch and slit width；
(b) it is that the second ultraviolet light is opened, the second visible light is not switched on, and the pitch and slit width of flexible grating become larger；(c) it is the second ultraviolet light
It closes, the second visible light is opened, and flexible grating reverts to initial pitch and slit width.Second ultraviolet source 7 and the second visible light
The flexible grating 9 that light source 8 is sent out, flexible grating 9 transmit the spectral information of the wide spectrum light after methane gas 4 to be measured absorbs to spy
Device 10 is surveyed, detector 10 is transferred to computer 1 corresponding signal, through signal conditioning circuit 11, passes through 1 infrared spectrum of computer
Analysis, monitors the multiple components of methane gas 4 to be measured in real time.
It is enlightenment with above-mentioned desirable embodiment according to the present invention, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to determine its technical scope according to right.
Claims (6)
1. a kind of device that coal mine gas remotely monitors, which is characterized in that including being arranged in mine and can be by optical drive
Transparent air pump (3) and flexible grating (9)；Further include the light source generation being arranged outside mine and signal acquisition process unit,
The light that light source generation is sent out is irradiated to transparent air pump (3) and flexible grating (9), light source generation and signal by optical cable
Acquisition process unit is connected, and flexible grating (9) is connected by optical cable with signal acquisition process unit；
It is equipped with check valve (12) at the top of transparent air pump (3), transparent air pump (3) bottom is the organic thin of the illuminophore containing azobenzene
Film I (13)；Flexible grating (9) lower end is equipped with the organic film II (15) of the illuminophore containing azobenzene；
The light source generation includes wide spectrum infrared light supply (2), the first ultraviolet source (5), the first visible light source
(6), the second ultraviolet source (7) and the second visible light source (8)；Wherein, the light that wide spectrum infrared light supply (2) is sent out passes through light
Fibre irradiates transparent air pump (3), and the light that the first ultraviolet source (5) and the first visible light source (6) are sent out passes through fiber-optic illuminated
The organic film I (13) of the illuminophore containing azobenzene of bright air pump (3) bottom；Second ultraviolet source (7) and the second visible light light
The organic film II (15) that the light that source (8) is sent out passes through the illuminophore containing azobenzene of fiber-optic illuminated flexible grating (9) lower end；
After the light that wide spectrum infrared light supply (2) is sent out is by fiber-optic illuminated to transparent air pump (3), then it is incident upon on flexible grating (9)；
The signal acquisition process unit includes computer (1), detector (10) and signal conditioning circuit (11), flexible grating
(9) it is connected with the input terminal of detector (10) by cable, the output end of detector (10) is defeated with signal conditioning circuit (11)
Enter end to be connected, the output end of signal conditioning circuit (11) is connected with computer (1).
2. the device that coal mine gas according to claim 1 remotely monitors, which is characterized in that when the first ultraviolet source
(5) or the first visible light source (6) organic film I for passing through the illuminophore containing azobenzene of fiber-optic illuminated transparent air pump (3) bottom
(13) when, the organic film I (13) of azobenzene illuminophore is deformed upon.
3. the device that coal mine gas according to claim 1 remotely monitors, which is characterized in that when the second ultraviolet source
(7) and the light that sends out of the second visible light source (8) having by the illuminophore containing azobenzene of fiber-optic illuminated flexible grating (9) lower end
When machine film (15) II, the organic film II (15) of the illuminophore containing azobenzene is deformed upon.
4. the device that coal mine gas according to claim 1 remotely monitors, which is characterized in that the illuminophore containing azobenzene has
Machine film II (15) is fixed on flexible grating (9) lower end by fixing piece (14).
5. the side remotely monitored based on the device that the coal mine gas described in any one of Claims 1 to 4 remotely monitors
Method, which is characterized in that include the following steps：
1) wide spectrum infrared light supply (2) is opened, the flexible air pump (3) of the light sent out irradiation is made；
2) the first ultraviolet source (5) or the first visible light source (6) are opened, irradiate transparent air pump (3) bottom contains azobenzene
The organic film I (13) of the organic film I (13) of illuminophore, the illuminophore containing azobenzene are deformed upon, and transparent air pump (3) sucks mine
Methane gas to be measured (4) in well carries out real-time sampling to methane gas to be measured；
3) after methane gas (4) to be measured absorbs the light that wide spectrum infrared light supply (2) is sent out, open the second ultraviolet source (7) or
Second visible light source (8) irradiates the organic film II (15) that flexible grating (9) lower end is equipped with the illuminophore containing azobenzene, containing even
The organic film II (15) of pyridine illuminophore is deformed upon, the variation of flexible grating (9) pitch, obtain methane gas to be measured it is a variety of at
The spectral information of part；
4) spectral information of methane gas multiple components to be measured is delivered to signal acquisition process list by flexible grating (9) by optical fiber
Member realizes real-time monitoring and the multiple components spectrum analysis of methane gas to be measured.
6. the method according to claim 5 remotely monitored, which is characterized in that the spectral information of flexible grating (9) output
It is delivered to computer (1) by detector (10) and signal conditioning circuit (11), spectroscopic data is calculated.
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| CN106989965B (en) * | 2017-06-09 | 2019-05-07 | 辽宁工程技术大学 | A kind of coal mine underground gas sampling apparatus and method |
| CN112304891A (en) * | 2020-10-14 | 2021-02-02 | 西安工程大学 | System for detecting gas by adopting flexible grating and detection method thereof |
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