CN103197086B - Microfluidic underground coal mine air monitoring system and method - Google Patents

Microfluidic underground coal mine air monitoring system and method Download PDF

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CN103197086B
CN103197086B CN201310128166.7A CN201310128166A CN103197086B CN 103197086 B CN103197086 B CN 103197086B CN 201310128166 A CN201310128166 A CN 201310128166A CN 103197086 B CN103197086 B CN 103197086B
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micro
valve
circuit module
dust
gas
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CN103197086A (en
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闫小乐
郝丽梅
赵省贵
张涛
解忧
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Xian University of Science and Technology
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Xian University of Science and Technology
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Abstract

The invention discloses a microfluidic underground coal mine air monitoring system and method. The system comprises a microfluidic chip, a sampling unit, a detecting unit and a main control unit, wherein a gas-solid two-phase separating mechanism and a dust dispersity selecting mechanism are arranged in the microfluidic chip; the sampling unit comprises a miniature liquid pump, a miniature gas pump and a miniature gas sampling vacuum pump; the detecting unit comprises a microprocessor module, a miniature light emitting element, a monochromator, a light detector, a signal conditioning circuit module and a photoelectric counter; and the main control unit comprises a main controller module and a wireless communication module. The method comprises the following steps of: 1. vacuumizing; 2. sampling gases; 3. analyzing micro-channels of the gases and treating characteristic spectrum absorptive amount of the gases; 4. treating the number of dust particles within various particle diameter sections; 5. treating the concentrations of the gases, the dust concentration and the dust dispersity; and 6. cleaning. By adoption of the system and the method, the detection cost is lowered, the detection efficiency is improved, relatively accurate detection data can be obtained, and the generalization and application values are high.

Description

Atmospheric monitoring system and method under a kind of micro-fluidic coal mine
Technical field
The present invention relates to air monitering technical field under coal mine, especially relate to a kind of atmospheric monitoring system and method under micro-fluidic coal mine.
Background technology
Coal industry is one of important energy industry of China, and within 2011, national coal production reaches 35.2 hundred million tons of left and right, accounts for 77.8% of Domestic Energy Yield.At present, China's underground coal mine is gaseous mine, and the disasters such as gas and dust explosion, coal and Gas Outburst are brought immense pressure to the safety in production of coal.Therefore, national security production supervision management board and national Coal Mine Safety Supervision Bureau have formulated strict " safety regulations in coal mine ".
In order to guarantee that down-hole normally produces, " safety regulations in coal mine " stipulated the airborne various gas contents in underground work region and dust concentration.Wherein, the gas componant that mainly monitor down-hole comprises oxygen (O 2), carbon dioxide (CO 2), methane (CH 4), hydrogen (H 2), sulphuric dioxide (SO 2), carbon monoxide (CO), sulfuretted hydrogen (H 2s), ammonia (NH 3), nitrogen oxide (NO) etc.Dust monitoring relates generally to free SiO in total dust, respirable dust and dust 2content etc.Therefore, grasp in real time underground air present situation comprehensively and in mine safety monitoring system, seem very important.
At present, the air monitering class device connecting with mine safety monitoring system mainly contains methane detector, carbonmonoxide detector and dust concentration of coalpit measuring instrument etc., and it uses the requirement that substantially meets existing coal mine safety monitoring.But in practice, while using above-mentioned freestanding monitoring instrument to detect underground air, need plurality of devices, program is loaded down with trivial details, and expense is high; In the time carrying out comprehensive data analysis, not only the correlativity between Various types of data is poor, and intensity of workers is large.
In order to adapt to the needs of air monitering under coal mine, there is the trend that multiple detecting instrument is integrated in underground air detection technique in recent years.Adopt single instrument to detect the many index of analyzing same air sample, can not only reduce expense, and can better reflect the truth of air at synchronization.For example, " the CJYB4/25 methane oxygen two parameter alarms " that Beijing Lingtian Century Automation Technology Co., Ltd. produces, the concentration of use thermocatalysis principle, the real-time testing environment Methane in Air of electrochemical principle, oxygen.
In recent years, provide new opportunity at the microflow control technique of biological, chemical field development for the development of air monitering technology under coal mine.Microflow control technique, analyzing the multiple operating unit that relates in experiment and be integrated on the chip of more than square centimeters, carries out correlation analysis.For example, the applying date is on March 25th, 2011, application number is that the Chinese invention patent of 201110074623.X discloses a kind of toxic and harmful detection chip and preparation method thereof, and this chip uses electrochemical method can detect gaseous species and the concentration such as carbon monoxide, sulfuretted hydrogen and sulphuric dioxide.But colliery subsurface environment is special, due to the needs that airborne gas componant, dust concentration are monitored simultaneously, said chip cannot directly be introduced and under coal mine, carry out air monitering.In prior art, also there is no atmospheric monitoring system and method under the coal mine based on microflow control technique.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, provide a kind of simple in structure, rationally novel in design, atmospheric monitoring system under the micro-fluidic coal mine that realize conveniently, reliability and stability are high, can reduce intensity of workers.
For solving the problems of the technologies described above, the technical solution used in the present invention is: atmospheric monitoring system under a kind of micro-fluidic coal mine, it is characterized in that: comprise micro-fluidic chip, sampling unit, detecting unit and main control unit, on described micro-fluidic chip, be provided with air admission hole, vent port, dust exhausting hole, high-speed gas entrance, liquid inlet and vacuum orifice, described micro-fluidic chip inside is provided with gas-solid two phase separation mechanism, dust dispersity selection mechanism and many gas analysis microchannels, the air intake opening of described gas-solid two phase separation mechanism is by gas transmission conduit and be arranged on the supravasal first micro-valve of gas transmission and described air admission hole joins, the dust outlet of described gas-solid two phase separation mechanism is by dust delivery conduit and be arranged on the 5th micro-valve on dust delivery conduit and the dust inlet of dust dispersity selection mechanism joins, the dust outlet of described dust dispersity selection mechanism is joined by dust delivery conduit and described dust exhausting hole, the gas vent of described gas-solid two phase separation mechanism joins by gas transmission conduit and the gas access that is arranged on supravasal the 4th micro-valve of gas transmission and many articles of described gas analysis microchannels, the gas vent of many articles of described gas analysis microchannels all joins by the 6th micro-valve and described vent port, described gas-solid two phase separation mechanism are joined by fluid delivery conduit and the second micro-valve and the described liquid inlet that are arranged in fluid delivery conduit, described fluid delivery conduit is joined by high-speed gas delivery conduit and the 7th micro-valve and the described high-speed gas entrance that are arranged on high-speed gas delivery conduit, the gas transmission conduit that is connected to described gas-solid two phase separation mechanism gas outlets vacuumizes supravasal the 3rd micro-valve and described vacuum orifice joins by vacuumizing conduit and being arranged on,
Described sampling unit comprises first micro-valve-driving circuit module, second micro-valve-driving circuit module, the 3rd micro-valve-driving circuit module, the 4th micro-valve-driving circuit module, the 5th micro-valve-driving circuit module, the 6th micro-valve-driving circuit module and the 7th micro-valve-driving circuit module, and Miniature liquid pump, Miniature liquid pump drive circuit module, minitype gas pump, minitype gas pump drive circuit module, minitype gas sampling vacuum pump and minitype gas sampling vacuum pump drive circuit module, the output terminal of described first micro-valve and described first micro-valve-driving circuit module joins, the output terminal of described second micro-valve and described second micro-valve-driving circuit module joins, the output terminal of described the 3rd micro-valve and described the 3rd micro-valve-driving circuit module joins, the output terminal of described the 4th micro-valve and described the 4th micro-valve-driving circuit module joins, the output terminal of described the 5th micro-valve and described the 5th micro-valve-driving circuit module joins, the output terminal of described the 6th micro-valve and described the 6th micro-valve-driving circuit module joins, the output terminal of described the 7th micro-valve and described the 7th micro-valve-driving circuit module joins, described Miniature liquid pump is connected to described liquid inlet place and joins with the output terminal of described Miniature liquid pump drive circuit module, on described Miniature liquid pump, be connected with the reservoir for store washing liquid, described minitype gas pump is connected to described high-speed gas porch and joins with the output terminal of described minitype gas pump drive circuit module, described minitype gas sampling vacuum pump is connected to described vacuum orifice place and joins with the output terminal of described minitype gas sampling vacuum pump drive circuit module,
Described detecting unit comprises microprocessor module, correspondence is arranged on the multiple miniature light-emitting component on many gas analysis microchannels respectively, the corresponding multiple monochromators that join with multiple miniature light-emitting components respectively, respectively to being applied to single monochromatic multiple photo-detectors of gas characteristic spectral line and corresponding and multiple described photo-detectors join respectively the multiple signal conditioning circuit modules of planting of having of surveying that multiple monochromators send, the input end of described microprocessor module is connected to multiple photoelectric counters of counting respectively for the dust granules in multiple particle size interval that selection mechanism is selected to dust dispersity, multiple described miniature light-emitting components all join with the output terminal of described microprocessor module, multiple described signal conditioning circuit modules are all joined with the input end of described microprocessor module,
The data storage circuitry module that described main control unit comprises main controller module and joins with described main controller module, human-computer interaction module, sampling unit interface module, detecting unit interface module and for information wireless being sent to the wireless communication module of coal mine downhole safety supervisory system, described first micro-valve-driving circuit module, second micro-valve-driving circuit module, the 3rd micro-valve-driving circuit module, the 4th micro-valve-driving circuit module, the 5th micro-valve-driving circuit module, the 6th micro-valve-driving circuit module, the 7th micro-valve-driving circuit module, Miniature liquid pump drive circuit module, minitype gas pump drive circuit module and minitype gas sampling vacuum pump drive circuit module all join with described sampling unit interface module, described microprocessor module and described detecting unit interface module join.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, it is characterized in that: the quantity of described gas analysis microchannel is six and is respectively oxygen analysis microchannel, carboloy dioxide analysis microchannel, methane is analyzed microchannel, sulphuric dioxide is analyzed microchannel, carbon monoxide analyzes microchannel and sulfuretted hydrogen is analyzed microchannel, the quantity of corresponding described miniature light-emitting component is six and is respectively the first miniature light-emitting component being arranged on oxygen analysis microchannel, be arranged on the second miniature light-emitting component on carboloy dioxide analysis microchannel, be arranged on methane and analyze the 3rd miniature light-emitting component on microchannel, be arranged on sulphuric dioxide and analyze the 4th miniature light-emitting component on microchannel, being arranged on carbon monoxide analyzes the 5th miniature light-emitting component on microchannel and is arranged on the 6th miniature light-emitting component on sulfuretted hydrogen analysis microchannel, the quantity of corresponding described monochromator is six and is respectively and joins with the first miniature light-emitting component and for the complex light of the first miniature light-emitting component transmitting is decomposed into monochromatic light and therefrom selects monochromatic first monochromator with oxygen characteristics spectral line, join with the second miniature light-emitting component and also therefrom select monochromatic second monochromator with carbon dioxide characteristic spectral line for the complex light of the second miniature light-emitting component transmitting is decomposed into monochromatic light, join with the 3rd miniature light-emitting component and also therefrom select monochromatic the 3rd monochromator with methane characteristic spectral line for the complex light of the 3rd miniature light-emitting component transmitting is decomposed into monochromatic light, join with the 4th miniature light-emitting component and also therefrom select monochromatic the 4th monochromator with sulphuric dioxide characteristic spectral line for the complex light of the 4th miniature light-emitting component transmitting is decomposed into monochromatic light, join with the 5th miniature light-emitting component and there is monochromatic the 5th monochromator of carbon monoxide characteristic spectral line and join with the 6th miniature light-emitting component and also therefrom select monochromatic the 6th monochromator with sulfuretted hydrogen characteristic spectral line for the complex light of the 6th miniature light-emitting component transmitting is decomposed into monochromatic light for the complex light of the 5th miniature light-emitting component transmitting being decomposed into monochromatic light and therefrom selecting, the quantity of corresponding described photo-detector is six and is respectively monochromatic the first photo-detector sending for surveying the first monochromator, for surveying monochromatic the second photo-detector that the second monochromator sends, for surveying monochromatic the 3rd photo-detector that the 3rd monochromator sends, for surveying monochromatic the 4th photo-detector that the 4th monochromator sends, for surveying monochromatic the 5th photo-detector that the 5th monochromator sends and monochromatic the 6th photo-detector sending for surveying the 6th monochromator, the quantity of corresponding described signal conditioning circuit module is six and is respectively the first signal conditioning circuit module joining with the first photo-detector, the secondary signal conditioning circuit module joining with the second photo-detector, the 3rd signal conditioning circuit module of joining with the 3rd photo-detector, the 4th signal conditioning circuit module of joining with the 4th photo-detector, the 5th signal conditioning circuit module of joining with the 5th photo-detector and the 6th signal conditioning circuit module of joining with the 6th photo-detector.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, it is characterized in that: in described gas-solid two phase separation mechanism comprise gas-solid two phase separation mechanism housings and are arranged on gas-solid two phase separation mechanism housings and for gas-solid two phase separation mechanism enclosure interior spatial separations are become to dust chamber and the two-part dust-filtering net of air chamber, the gas access of described gas-solid two phase separation mechanism and dust outlet are all arranged on the gas-solid two phase separation mechanism housings that are positioned at dust cavity segment, the gas vent of described gas-solid two phase separation mechanism is arranged on the gas-solid two phase separation mechanism housings that are positioned at air chamber part, described fluid delivery conduit is inserted in described dust chamber and near the setting of described dust-filtering net through described gas-solid two phase separation mechanism housings.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, it is characterized in that: the quantity of the particle size interval that described dust dispersity selection mechanism is selected is three and is respectively the first particle size interval, the second particle size interval and the 3rd particle size interval, the quantity of corresponding described photoelectric counter is three and is respectively the first photoelectric counter that the dust granules in the first particle size interval of selecting for the selection mechanism to dust dispersity is counted, the 3rd photoelectric counter that dust granules in the second photoelectric counter of counting for the dust granules in the second particle size interval that selection mechanism is selected to dust dispersity and the 3rd particle size interval of selecting for the selection mechanism to dust dispersity is counted, described dust dispersity selection mechanism comprises dust dispersity selection mechanism housing and is arranged on the first particle size interval dust granules passage on dust dispersity selection mechanism housing, the second particle size interval dust granules passage and the 3rd particle size interval dust granules passage, the dust inlet of described dust dispersity selection mechanism and dust outlet are symmetricly set on described dust dispersity selection mechanism housing, on described the first particle size interval dust granules passage, be provided with the 8th micro-valve, on described the second particle size interval dust granules passage, be provided with the 9th micro-valve, on described the 3rd particle size interval dust granules passage, be provided with the tenth micro-valve, described the first particle size interval dust granules passage, the second particle size interval dust granules passage and the 3rd particle size interval dust granules passage are all connected with the dust outlet of described dust dispersity selection mechanism, described sampling unit comprises the 8th micro-valve-driving circuit module, the 9th micro-valve-driving circuit module and the tenth micro-valve-driving circuit module, described the 8th micro-valve-driving circuit module, the 9th micro-valve-driving circuit module and the tenth micro-valve-driving circuit module are all joined with described sampling unit interface module, the output terminal of described the 8th micro-valve and described the 8th micro-valve-driving circuit module joins, the output terminal of described the 9th micro-valve and described the 9th micro-valve-driving circuit module joins, and the output terminal of described the tenth micro-valve and described the tenth micro-valve-driving circuit module joins.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, it is characterized in that: the quantity of described the first particle size interval dust granules passage, the second particle size interval dust granules passage and the 3rd particle size interval dust granules passage is three, the quantity of corresponding described the 8th micro-valve, the 9th micro-valve and the tenth micro-valve is three, and the quantity of corresponding described the 8th micro-valve-driving circuit module, the 9th micro-valve-driving circuit module and the tenth micro-valve-driving circuit module is three; Three described the first particle size interval dust granules passages, three described the second particle size interval dust granules passages and three described the 3rd particle size interval dust granules passage spaces arrange.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, is characterized in that: described the first particle size interval is 0.1 μ m～2.5 μ m, and described the second particle size interval is 2.5 μ m～10 μ m, and described the 3rd particle size interval is 10 μ m～100 μ m.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, is characterized in that: described human-computer interaction module is touch LCD screen, and described wireless communication module is ZIGBEE wireless communication module.
Atmospheric monitoring system under above-mentioned micro-fluidic coal mine, is characterized in that: the baroceptor that the input end of described microprocessor module is connected to the temperature sensor for colliery down-hole ambient temperature is detected and detects for down-hole gas detection in coal mine being compressed into row.
The present invention also provides a kind of air monitering method under the micro-fluidic coal mine simple, data analysis processing speed is fast, reliability is high, accuracy is high that realizes, and it is characterized in that the method comprises the following steps:
Step 1, micro-fluidic chip is vacuumized: first, first micro-valve is closed in described main controller module output, second micro-valve, the 5th micro-valve, the 6th micro-valve and the 7th micro-valve and open the control signal of the 3rd micro-valve and the 4th micro-valve and be transferred to respectively first micro-valve-driving circuit module by sampling unit interface module, second micro-valve-driving circuit module, the 5th micro-valve-driving circuit module, the 6th micro-valve-driving circuit module and the 7th micro-valve-driving circuit module and the 3rd micro-valve-driving circuit module and the 4th micro-valve-driving circuit module, control first micro-valve, second micro-valve, the 5th micro-valve, the 6th micro-valve and the 7th micro-valve are closed, and control the 3rd micro-valve and the 4th micro-valve is opened, then, described main controller module output starts the control signal of minitype gas sampling vacuum pump and is transferred to minitype gas sampling vacuum pump drive circuit module by sampling unit interface module, control minitype gas sampling vacuum pump and start, micro-fluidic chip is vacuumized, vacuumize after end, described main controller module output is closed the control signal of minitype gas sampling vacuum pump and is transferred to minitype gas sampling vacuum pump drive circuit module by sampling unit interface module, controls minitype gas sampling vacuum pump and closes,
Step 2, micro-fluidic chip carry out gas sampling: described main controller module output is closed the 3rd micro-valve and opens the control signal of first micro-valve and be transferred to respectively the 3rd micro-valve-driving circuit module and first micro-valve-driving circuit module by sampling unit interface module, controlling the 3rd micro-valve closes, first micro-valve is opened, micro-fluidic chip starts to carry out gas sampling, colliery underground air enters by air admission hole and is first transported in gas-solid two phase separation mechanism by gas transmission conduit, then is transported in many described gas analysis microchannels by gas transmission conduit; Then, described main controller module output is closed the control signal of first micro-valve and the 4th micro-valve and is transferred to respectively first micro-valve-driving circuit module and the 4th micro-valve-driving circuit module by sampling unit interface module, controls first micro-valve and the 4th micro-valve and closes;
Step 3, the gas characteristic spectral absorption component analysis processing of each gas analysis microchannel in micro-fluidic chip: described micro-fluidic chip carries out in gas sampling process, described main controller module output starts the control signal detecting and is transferred to microprocessor module by detecting unit interface module, the multiple miniature light-emitting components of microprocessor module control start luminous, the multiple monochromators respectively corresponding complex light by multiple miniature light-emitting component transmittings are decomposed into monochromatic light and therefrom select the monochromatic light with single kind gas characteristic spectral line, multiple photo-detectors respectively corresponding survey monochromatic light that multiple monochromators send and by the signal detecting respectively correspondence export to multiple signal conditioning circuit modules, multiple signal conditioning circuit modules will be exported to microprocessor module through its signal after treatment again, microprocessor module carries out analyzing and processing to the signal of multiple signal conditioning circuit module outputs respectively, obtain the gas characteristic spectral absorption amount of each gas analysis microchannel in micro-fluidic chip and be transferred to main controller module by detecting unit interface module,
Dust granules quantitative analysis processing in each particle size interval that step 4, dust dispersity selection mechanism are selected: first, described main controller module output is opened the control signal of the 5th micro-valve and the 7th micro-valve and is transferred to respectively the 5th micro-valve-driving circuit module and the 7th micro-valve-driving circuit module by sampling unit interface module, controls the 5th micro-valve and the 7th micro-valve and opens; Then, described main controller module output starts the control signal of minitype gas pump and is transferred to minitype gas pump drive circuit module by sampling unit interface module, control minitype gas pump startup, the high-speed gas of minitype gas pump output enters into gas-solid two phase separation mechanism by high-speed gas delivery conduit and fluid delivery conduit, and isolated dust in gas-solid two phase separation mechanism is transported in dust dispersity selection mechanism by dust delivery conduit; Then, the dust granules in multiple particle size interval is selected in dust dispersity selection mechanism successively, microprocessor module is counted respectively and exported to dust granules in multiple photoelectric counters multiple particle size interval that selection mechanism is selected to dust dispersity, microprocessor module carries out analyzing and processing to the signal of multiple photoelectric counters output respectively, obtains the dust granules quantity in each particle size interval that dust dispersity selection mechanism selects and is transferred to main controller module by detecting unit interface module; Then, described main controller module output is closed the control signal of minitype gas pump and is transferred to minitype gas pump drive circuit module by sampling unit interface module, controls minitype gas pump and closes; Finally, described main controller module output is closed the control signal of the 5th micro-valve and the 7th micro-valve and is transferred to respectively the 5th micro-valve-driving circuit module and the 7th micro-valve-driving circuit module by sampling unit interface module, controls the 5th micro-valve and the 7th micro-valve and closes;
Step 5, various gas concentrations in the underground air of colliery, the analyzing and processing of dust concentration and dust dispersity: the dust granules quantity in each particle size interval that in the micro-fluidic chip that described main controller module receives it, gas characteristic spectral absorption amount of each gas analysis microchannel and dust dispersity selection mechanism are selected is carried out analyzing and processing, obtain various gas concentrations in the underground air of colliery, dust concentration and dust dispersity, analysis processing result is stored in data storage circuitry module, and send to coal mine downhole safety supervisory system by wireless communication module,
Step 6, micro-fluidic chip clean: first, described main controller module output is opened the control signal of second micro-valve, the 4th micro-valve, the 5th micro-valve and the 6th micro-valve and is transferred to respectively second micro-valve-driving circuit module, the 4th micro-valve-driving circuit module, the 5th micro-valve-driving circuit module and the 6th micro-valve-driving circuit module by sampling unit interface module, controls second micro-valve, the 4th micro-valve, the 5th micro-valve and the 6th micro-valve and opens, then, described main controller module output starts the control signal of Miniature liquid pump and is transferred to Miniature liquid pump drive circuit module by sampling unit interface module, control minisize liquid pump startup, Miniature liquid pump will be transported in gas-solid two phase separation mechanism by fluid delivery conduit after the cleaning fluid pressurization in reservoir, gas-solid two phase separation mechanism are cleaned, cleaning fluid is transported in dust dispersity selection mechanism by dust delivery conduit from the dust outlet of gas-solid two phase separation mechanism is flowed out, to dust dispersity, selection mechanism is cleaned, cleaning fluid is transported in many described gas analysis microchannels by gas transmission conduit from the gas vent of gas-solid two phase separation mechanism flows out, many described gas analysis microchannels are cleaned, after cleaning finishes, described main controller module output is closed the control signal of Miniature liquid pump and is transferred to Miniature liquid pump drive circuit module by sampling unit interface module, control Miniature liquid pump is closed, described main controller module output is closed the control signal of second micro-valve, the 5th micro-valve and the 6th micro-valve and is transferred to respectively second micro-valve-driving circuit module, the 5th micro-valve-driving circuit module and the 6th micro-valve-driving circuit module by sampling unit interface module, controls second micro-valve, the 5th micro-valve and the 6th micro-valve and closes.
Above-mentioned method, it is characterized in that: the quantity of the particle size interval that described dust dispersity selection mechanism is selected is three and is respectively the first particle size interval, the second particle size interval and the 3rd particle size interval, described dust dispersity selection mechanism comprises dust dispersity selection mechanism housing and is arranged on the first particle size interval dust granules passage on dust dispersity selection mechanism housing, the second particle size interval dust granules passage and the 3rd particle size interval dust granules passage, the dust inlet of described dust dispersity selection mechanism and dust outlet are symmetricly set on described dust dispersity selection mechanism housing, on described the first particle size interval dust granules passage, be provided with the 8th micro-valve, on described the second particle size interval dust granules passage, be provided with the 9th micro-valve, on described the 3rd particle size interval dust granules passage, be provided with the tenth micro-valve, described the first particle size interval dust granules passage, the second particle size interval dust granules passage and the 3rd particle size interval dust granules passage are all connected with the dust outlet of described dust dispersity selection mechanism, described sampling unit comprises the 8th micro-valve-driving circuit module, the 9th micro-valve-driving circuit module and the tenth micro-valve-driving circuit module, described the 8th micro-valve-driving circuit module, the 9th micro-valve-driving circuit module and the tenth micro-valve-driving circuit module are all joined with described sampling unit interface module, the output terminal of described the 8th micro-valve and described the 8th micro-valve-driving circuit module joins, the output terminal of described the 9th micro-valve and described the 9th micro-valve-driving circuit module joins, and the output terminal of described the tenth micro-valve and described the tenth micro-valve-driving circuit module joins,
In step 4, dust dispersity selection mechanism is selected successively the process of the dust granules in multiple particle size interval and is: first, described main controller module output is opened the control signal of the 8th micro-valve and is transferred to the 8th micro-valve-driving circuit module by sampling unit interface module, control the 8th micro-valve and open, the dust granules in the first particle size interval is selected in dust dispersity selection mechanism; Then, described main controller module output is opened the control signal of the 9th micro-valve and is transferred to the 9th micro-valve-driving circuit module by sampling unit interface module, control the 9th micro-valve and open, the dust granules in the second particle size interval is selected in dust dispersity selection mechanism; Then, described main controller module output is opened the control signal of the tenth micro-valve and is transferred to the tenth micro-valve-driving circuit module by sampling unit interface module, control the tenth micro-valve and open, the dust granules in the 3rd particle size interval is selected in dust dispersity selection mechanism; After step 7, also need described main controller module output to close the control signal of the 8th micro-valve, the 9th micro-valve and the tenth micro-valve and be transferred to respectively the 8th micro-valve-driving circuit module, the 9th micro-valve-driving circuit module and the tenth micro-valve-driving circuit module by sampling unit interface module, control the 8th micro-valve, the 9th micro-valve and the tenth micro-valve and close.
The present invention compared with prior art has the following advantages:
1, under the micro-fluidic coal mine of the present invention, atmospheric monitoring system has adopted modular design, simple in structure, rationally novel in design, and it is convenient to realize.
2, the present invention concentrates on the measuring ability of multiple gases and dust on same micro-fluidic chip, can effectively improve the reliability and stability of atmospheric monitoring system.
3, under the micro-fluidic coal mine of the present invention, in atmospheric monitoring system, adopted integrated micro-fluidic chip, can realize the comprehensive detection function of multiple gases and dust in the underground air of colliery, overcome in prior art, need to adopt that plurality of devices carries out that comprehensive data analysis program is loaded down with trivial details, expense is high, defect and the deficiency such as correlativity between data is poor, intensity of workers is large, reduce composition of air testing cost under coal mine, reduce staff's labour intensity, improve detection efficiency, and can obtain and detect more accurately data.
4, the present invention can obtain colliery underground air correlation parameter simultaneously, is convenient to all kinds of peril causation analysis under coal mine, has improved coal mine safety monitoring level.
5, under the micro-fluidic coal mine of the present invention, the realization of air monitering method is simple, and data analysis processing speed is fast, and reliability is high, and accuracy is high.
6, the present invention is suitable for air monitering under coal mine, and practical, application value is high.
In sum, the present invention is rationally novel in design, and it is convenient to realize, reduce composition of air testing cost under coal mine, reduced staff's labour intensity, improved detection efficiency, and can obtain and detect more accurately data, practical, application value is high.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the integrated circuit block diagram of atmospheric monitoring system under the micro-fluidic coal mine of the present invention.
Fig. 2 is the structural representation of micro-fluidic chip of the present invention.
Fig. 3 is the structural representation of gas-solid two phase separation mechanism of the present invention.
Fig. 4 is the structural representation of dust dispersity selection mechanism of the present invention.
Fig. 5 is the annexation schematic diagram of sampling unit of the present invention and other each module.
Fig. 6 is the schematic block circuit diagram of detecting unit of the present invention.
Fig. 7 is the method flow diagram of air monitering method under the micro-fluidic coal mine of the present invention.
Description of reference numerals:
1-micro-fluidic chip; 1-1-air admission hole; 1-2-vent port;
1-3-dust exhausting hole; 1-4-high-speed gas entrance; 1-5-liquid inlet;
1-6-vacuum orifice; 1-7-gas-solid two phase separation mechanism;
The selection mechanism of 1-8-dust dispersity; 1-91-oxygen analysis microchannel;
1-92-carboloy dioxide analysis microchannel; 1-93-methane is analyzed microchannel;
1-94-sulphuric dioxide is analyzed microchannel; 1-95-carbon monoxide is analyzed microchannel;
1-96-sulfuretted hydrogen is analyzed microchannel; The micro-valve of 1-10-the first;
The micro-valve of 1-11-five; The micro-valve of 1-12-four; The micro-valve of 1-13-six;
The micro-valve of 1-14-the second; The micro-valve of 1-15-seven; The micro-valve of 1-16-three;
1-17-gas transmission conduit; 1-18-dust delivery conduit; 1-19-fluid delivery conduit;
1-20-high-speed gas delivery conduit; 1-21-vacuumize conduit;
2-sampling unit; The micro-valve-driving circuit module of 2-1-the first;
The micro-valve-driving circuit module of 2-2-the second; The micro-valve-driving circuit module of 2-3-three;
The micro-valve-driving circuit module of 2-4-four; The micro-valve-driving circuit module of 2-5-five;
The micro-valve-driving circuit module of 2-6-six; The micro-valve-driving circuit module of 2-7-seven;
The micro-valve-driving circuit module of 2-7-seven; 2-8-Miniature liquid pump;
2-9-Miniature liquid pump drive circuit module; 2-10-minitype gas pump;
2-11-minitype gas pump drive circuit module; 2-12-minitype gas sampling vacuum pump;
2-13-minitype gas sampling vacuum pump drive circuit module; 2-14-reservoir;
The micro-valve-driving circuit module of 2-15-eight; The micro-valve-driving circuit module of 2-16-nine;
The micro-valve-driving circuit module of 2-17-ten; The micro-valve-driving circuit module of 2-18-ten;
3-detecting unit; 3-1-microprocessor module;
The miniature light-emitting component of 3-21-the first; The miniature light-emitting component of 3-22-the second;
The miniature light-emitting component of 3-23-three; The miniature light-emitting component of 3-24-four;
The miniature light-emitting component of 3-25-five; The miniature light-emitting component of 3-26-six;
3-31-the first monochromator; 3-32-the second monochromator; 3-33-three monochromator;
3-34-four monochromator; 3-35-five monochromator; 3-36-six monochromator;
3-41-the first photo-detector; 3-42-the second photo-detector; 3-43-three photo-detector;
3-44-four photo-detector; 3-45-five photo-detector; 3-46-six photo-detector;
3-51-first signal conditioning circuit module; 3-52-secondary signal conditioning circuit module;
3-53-three signal conditioning circuit module; 3-54-four signal conditioning circuit module;
3-55-five signal conditioning circuit module; 3-56-six signal conditioning circuit module;
3-61-the first photoelectric counter; 3-62-the second photoelectric counter;
3-63-three photoelectric counter; 3-7-temperature sensor; 3-8-baroceptor;
4-main control unit; 4-1-main controller module; 4-2-data storage circuitry module;
4-3-human-computer interaction module; 4-4-sampling unit interface module;
4-5-detecting unit interface module; 4-6-wireless communication module.
Embodiment
As depicted in figs. 1 and 2, atmospheric monitoring system under micro-fluidic coal mine of the present invention, comprise micro-fluidic chip 1, sampling unit 2, detecting unit 3 and main control unit 4, on described micro-fluidic chip 1, be provided with air admission hole 1-1, vent port 1-2, dust exhausting hole 1-3, high-speed gas entrance 1-4, liquid inlet 1-5 and vacuum orifice 1-6, described micro-fluidic chip 1 inside is provided with gas-solid two phase separation mechanism 1-7, dust dispersity selection mechanism 1-8 and many gas analysis microchannels, the air intake opening of described gas-solid two phase separation mechanism 1-7 joins by gas transmission conduit 1-17 and the first micro-valve 1-10 and the described air admission hole 1-1 that are arranged on gas transmission conduit 1-17, the dust outlet of described gas-solid two phase separation mechanism 1-7 is by dust delivery conduit 1-18 and be arranged on the 5th micro-valve 1-11 on dust delivery conduit 1-18 and the dust inlet of dust dispersity selection mechanism 1-8 joins, the dust outlet of described dust dispersity selection mechanism 1-8 is joined by dust delivery conduit 1-18 and described dust exhausting hole 1-3, the gas vent of described gas-solid two phase separation mechanism 1-7 is by gas transmission conduit 1-17 and be arranged on the 4th micro-valve 1-12 on gas transmission conduit 1-17 and the gas access of many articles of described gas analysis microchannels joins, the gas vent of many articles of described gas analysis microchannels all joins by the 6th micro-valve 1-13 and described vent port 1-2, described gas-solid two phase separation mechanism 1-7 join by fluid delivery conduit 1-19 and the second micro-valve 1-14 and the described liquid inlet 1-5 that are arranged on fluid delivery conduit 1-19, described fluid delivery conduit 1-19 joins by high-speed gas delivery conduit 1-20 and the 7th micro-valve 1-15 and the described high-speed gas entrance 1-4 that are arranged on high-speed gas delivery conduit 1-20, the gas transmission conduit 1-17 that is connected to described gas-solid two phase separation mechanism 1-7 gas outlets joins by vacuumizing conduit 1-21 and being arranged on the 3rd micro-valve 1-16 and the described vacuum orifice 1-6 that vacuumize on conduit 1-21,
As shown in Figure 5, described sampling unit 2 comprises first micro-valve-driving circuit module 2-1, second micro-valve-driving circuit module 2-2, the 3rd micro-valve-driving circuit module 2-3, the 4th micro-valve-driving circuit module 2-4, the 5th micro-valve-driving circuit module 2-5, the 6th micro-valve-driving circuit module 2-6 and the 7th micro-valve-driving circuit module 2-7, and Miniature liquid pump 2-8, Miniature liquid pump drive circuit module 2-9, minitype gas pump 2-10, minitype gas pump drive circuit module 2-11, minitype gas sampling vacuum pump 2-12 and minitype gas sampling vacuum pump drive circuit module 2-13, the output terminal of described first micro-valve 1-10 and described first micro-valve-driving circuit module 2-1 joins, the output terminal of described second micro-valve 1-14 and described second micro-valve-driving circuit module 2-2 joins, the output terminal of described the 3rd micro-valve 1-16 and described the 3rd micro-valve-driving circuit module 2-3 joins, the output terminal of described the 4th micro-valve 1-12 and described the 4th micro-valve-driving circuit module 2-4 joins, the output terminal of described the 5th micro-valve 1-11 and described the 5th micro-valve-driving circuit module 2-5 joins, the output terminal of described the 6th micro-valve 1-13 and described the 6th micro-valve-driving circuit module 2-6 joins, the output terminal of described the 7th micro-valve 1-15 and described the 7th micro-valve-driving circuit module 2-7 joins, described Miniature liquid pump 2-8 is connected to 1-5 place, described liquid inlet and joins with the output terminal of described Miniature liquid pump drive circuit module 2-9, on described Miniature liquid pump 2-8, be connected with the reservoir 2-14 for store washing liquid, described minitype gas pump 2-10 is connected to described high-speed gas entrance 1-4 place and joins with the output terminal of described minitype gas pump drive circuit module 2-11, described minitype gas sampling vacuum pump 2-12 is connected to described vacuum orifice 1-6 place and joins with the output terminal of described minitype gas sampling vacuum pump drive circuit module 2-13,
As shown in Figure 6, described detecting unit 3 comprises microprocessor module 3-1, correspondence is arranged on the multiple miniature light-emitting component on many gas analysis microchannels respectively, the corresponding multiple monochromators that join with multiple miniature light-emitting components respectively, respectively to being applied to single monochromatic multiple photo-detectors of gas characteristic spectral line and corresponding and multiple described photo-detectors join respectively the multiple signal conditioning circuit modules of planting of having of surveying that multiple monochromators send, the input end of described microprocessor module 3-1 is connected to multiple photoelectric counters that the dust granules in the multiple particle size interval for dust dispersity selection mechanism 1-8 is selected is counted respectively, multiple described miniature light-emitting components all join with the output terminal of described microprocessor module 3-1, multiple described signal conditioning circuit modules are all joined with the input end of described microprocessor module 3-1,
As shown in Figure 1, the data storage circuitry module 4-2 that described main control unit 4 comprises main controller module 4-1 and joins with described main controller module 4-1, human-computer interaction module 4-3, sampling unit interface module 4-4, detecting unit interface module 4-5 and for information wireless being sent to the wireless communication module 4-6 of coal mine downhole safety supervisory system, described first micro-valve-driving circuit module 2-1, second micro-valve-driving circuit module 2-2, the 3rd micro-valve-driving circuit module 2-3, the 4th micro-valve-driving circuit module 2-4, the 5th micro-valve-driving circuit module 2-5, the 6th micro-valve-driving circuit module 2-6, the 7th micro-valve-driving circuit module 2-7, Miniature liquid pump drive circuit module 2-9, minitype gas pump drive circuit module 2-11 and minitype gas sampling vacuum pump drive circuit module 2-13 all join with described sampling unit interface module 4-4, described microprocessor module 3-1 and described detecting unit interface module 4-5 join.
As shown in Figure 2 and Figure 6, in the present embodiment, the quantity of described gas analysis microchannel is six and is respectively oxygen analysis microchannel 1-91, carboloy dioxide analysis microchannel 1-92, methane is analyzed microchannel 1-93, sulphuric dioxide is analyzed microchannel 1-94, carbon monoxide analyzes microchannel 1-95 and sulfuretted hydrogen is analyzed microchannel 1-96, the quantity of corresponding described miniature light-emitting component is six and is respectively the first miniature light-emitting component 3-21 being arranged on the 1-91 of oxygen analysis microchannel, be arranged on the second miniature light-emitting component 3-22 on the 1-92 of carboloy dioxide analysis microchannel, be arranged on methane and analyze the 3rd miniature light-emitting component 3-23 on the 1-93 of microchannel, be arranged on sulphuric dioxide and analyze the 4th miniature light-emitting component 3-24 on the 1-94 of microchannel, being arranged on carbon monoxide analyzes the 5th miniature light-emitting component 3-25 on the 1-95 of microchannel and is arranged on the 6th miniature light-emitting component 3-26 on sulfuretted hydrogen analysis microchannel 1-96, the quantity of corresponding described monochromator is six and is respectively and joins with the first miniature light-emitting component 3-21 and for the complex light of the first miniature light-emitting component 3-21 transmitting is decomposed into monochromatic light and therefrom selects the monochromatic first monochromator 3-31 with oxygen characteristics spectral line, join with the second miniature light-emitting component 3-22 and also therefrom select the monochromatic second monochromator 3-32 with carbon dioxide characteristic spectral line for the complex light of the second miniature light-emitting component 3-22 transmitting is decomposed into monochromatic light, join with the 3rd miniature light-emitting component 3-23 and also therefrom select monochromatic the 3rd monochromator 3-33 with methane characteristic spectral line for the complex light of the 3rd miniature light-emitting component 3-23 transmitting is decomposed into monochromatic light, join with the 4th miniature light-emitting component 3-24 and also therefrom select monochromatic the 4th monochromator 3-34 with sulphuric dioxide characteristic spectral line for the complex light of the 4th miniature light-emitting component 3-24 transmitting is decomposed into monochromatic light, join with the 5th miniature light-emitting component 3-25 and there is monochromatic the 5th monochromator 3-35 of carbon monoxide characteristic spectral line and join with the 6th miniature light-emitting component 3-26 and also therefrom select monochromatic the 6th monochromator 3-36 with sulfuretted hydrogen characteristic spectral line for the complex light of the 6th miniature light-emitting component 3-26 transmitting is decomposed into monochromatic light for the complex light of the 5th miniature light-emitting component 3-25 transmitting being decomposed into monochromatic light and therefrom selecting, the quantity of corresponding described photo-detector is six and is respectively monochromatic the first photo-detector 3-41 sending for surveying the first monochromator 3-31, for surveying monochromatic the second photo-detector 3-42 that the second monochromator 3-32 sends, for surveying monochromatic the 3rd photo-detector 3-43 that the 3rd monochromator 3-33 sends, for surveying monochromatic the 4th photo-detector 3-44 that the 4th monochromator 3-34 sends, for surveying monochromatic the 5th photo-detector 3-45 that the 5th monochromator 3-35 sends and monochromatic the 6th photo-detector 3-46 sending for surveying the 6th monochromator 3-36, the quantity of corresponding described signal conditioning circuit module is six and is respectively the first signal conditioning circuit module 3-51 joining with the first photo-detector 3-41, the secondary signal conditioning circuit module 3-52 joining with the second photo-detector 3-42, the 3rd signal conditioning circuit module 3-53 joining with the 3rd photo-detector 3-43, the 4th signal conditioning circuit module 3-54 joining with the 4th photo-detector 3-44, the 5th signal conditioning circuit module 3-55 joining with the 5th photo-detector 3-45 and the 6th signal conditioning circuit module 3-56 joining with the 6th photo-detector 3-46.
When concrete enforcement, described first signal conditioning circuit module 3-51, secondary signal conditioning circuit module 3-52, the 3rd signal conditioning circuit module 3-53, the 4th signal conditioning circuit module 3-54, the 5th signal conditioning circuit module 3-55 and the 6th signal conditioning circuit module 3-56 are by the amplifying circuit module of joining successively, filter circuit module and A/D change-over circuit module composition.
As shown in Figure 3, in the present embodiment, described gas-solid two phase separation mechanism 1-7 comprise gas-solid two phase separation mechanism housing 1-71 and are arranged in gas-solid two phase separation mechanism housing 1-71 and for gas-solid two phase separation mechanism housing 1-71 inner spaces are separated into dust chamber 1-73 and the two-part dust-filtering net of air chamber 1-74 1-72, the gas access of described gas-solid two phase separation mechanism 1-7 and dust outlet are all arranged on the gas-solid two phase separation mechanism housing 1-71 that are positioned at dust chamber 1-73 part, the gas vent of described gas-solid two phase separation mechanism 1-7 is arranged on the gas-solid two phase separation mechanism housing 1-71 that are positioned at air chamber 1-74 part, described fluid delivery conduit 1-19 is inserted in described dust chamber 1-73 and near described dust-filtering net 1-72 and arranges through described gas-solid two phase separation mechanism housing 1-71.
As shown in Figure 4, in the present embodiment, the quantity of the particle size interval that described dust dispersity selection mechanism 1-8 selects is three and is respectively the first particle size interval, the second particle size interval and the 3rd particle size interval, the quantity of corresponding described photoelectric counter is three and is respectively the first photoelectric counter 3-61 that the dust granules in the first particle size interval for dust dispersity selection mechanism 1-8 is selected is counted, the the second photoelectric counter 3-62 counting for the dust granules in the second particle size interval that dust dispersity selection mechanism 1-8 is selected and the 3rd photoelectric counter 3-63 counting for the dust granules in the 3rd particle size interval that dust dispersity selection mechanism 1-8 is selected, described dust dispersity selection mechanism 1-8 comprises dust dispersity selection mechanism housing 1-81 and is arranged on the first particle size interval dust granules passage 1-82 on dust dispersity selection mechanism housing 1-81, the second particle size interval dust granules passage 1-83 and the 3rd particle size interval dust granules passage 1-84, the dust inlet of described dust dispersity selection mechanism 1-8 and dust outlet are symmetricly set on described dust dispersity selection mechanism housing 1-81, on described the first particle size interval dust granules passage 1-82, be provided with the 8th micro-valve 1-85, on described the second particle size interval dust granules passage 1-83, be provided with the 9th micro-valve 1-86, on described the 3rd particle size interval dust granules passage 1-84, be provided with the tenth micro-valve 1-87, described the first particle size interval dust granules passage 1-82, the second particle size interval dust granules passage 1-83 and the 3rd particle size interval dust granules passage 1-84 are all connected with the dust outlet of described dust dispersity selection mechanism 1-8, described sampling unit 2 comprises the 8th micro-valve-driving circuit module 2-15, the 9th micro-valve-driving circuit module 2-16 and the tenth micro-valve-driving circuit module 2-17, described the 8th micro-valve-driving circuit module 2-15, the 9th micro-valve-driving circuit module 2-16 and the tenth micro-valve-driving circuit module 2-17 all join with described sampling unit interface module 4-4, the output terminal of described the 8th micro-valve 1-85 and described the 8th micro-valve-driving circuit module 2-15 joins, the output terminal of described the 9th micro-valve 1-86 and described the 9th micro-valve-driving circuit module 2-16 joins, the output terminal of described the tenth micro-valve 1-87 and described the tenth micro-valve-driving circuit module 2-17 joins.
As shown in Figure 4, in the present embodiment, the quantity of described the first particle size interval dust granules passage 1-82, the second particle size interval dust granules passage 1-83 and the 3rd particle size interval dust granules passage 1-84 is three, the quantity of corresponding described the 8th micro-valve 1-85, the 9th micro-valve 1-86 and the tenth micro-valve 1-87 is three, and the quantity of corresponding described the 8th micro-valve-driving circuit module 2-15, the 9th micro-valve-driving circuit module 2-16 and the tenth micro-valve-driving circuit module 2-17 is three; Three described the first particle size interval dust granules passage 1-82, three described the second particle size interval dust granules passage 1-83 and three described the 3rd particle size interval dust granules passage 1-84 spaces arrange.Described the first particle size interval is 0.1 μ m～2.5 μ m, and described the second particle size interval is 2.5 μ m～10 μ m, and described the 3rd particle size interval is 10 μ m～100 μ m.
When concrete enforcement, the dust outlet of three described the first particle size interval dust granules passage 1-82 links together, and the first photoelectric counter 3-61 is arranged on the dust exit of three described the first particle size interval dust granules passage 1-82; The dust outlet of three described the second particle size interval dust granules passage 1-83 links together, and the second photoelectric counter 3-62 is arranged on the dust exit of three described the second particle size interval dust granules passage 1-83; The dust outlet of three described the 3rd particle size interval dust granules passage 1-84 links together, and the 3rd photoelectric counter 3-63 is arranged on the dust exit of three described the 3rd particle size interval dust granules passage 1-84.
In the present embodiment, described human-computer interaction module 4-3 is touch LCD screen, and described wireless communication module 4-6 is ZIGBEE wireless communication module 4-6.As shown in Figure 6, the baroceptor 3-8 that the input end of described microprocessor module 3-1 is connected to the temperature sensor 3-7 for colliery down-hole ambient temperature is detected and detects for down-hole gas detection in coal mine being compressed into row; Due to the variation along with colliery down-hole ambient temperature and air pressure, entering into many air mass flows in described gas analysis microchannel will change, therefore set temperature sensor 3-7 and baroceptor 3-8, the data that can be used in various gas concentrations, dust concentration and dust dispersity in the colliery underground air that analyzing and processing is obtained are revised, to obtain more accurate data.
When concrete enforcement, described microprocessor module 3-1 and main controller module 4-1 have all used 16 or 32 embedded high-performance microprocessor.
In conjunction with Fig. 7, air monitering method under micro-fluidic coal mine of the present invention, comprises the following steps:
Step 1, micro-fluidic chip 1 is vacuumized: first, first micro-valve 1-10 is closed in described main controller module 4-1 output, second micro-valve 1-14, the 5th micro-valve 1-11, the 6th micro-valve 1-13 and the 7th micro-valve 1-15 and open the control signal of the 3rd micro-valve 1-16 and the 4th micro-valve 1-12 and be transferred to respectively first micro-valve-driving circuit module 2-1 by sampling unit interface module 4-4, second micro-valve-driving circuit module 2-2, the 5th micro-valve-driving circuit module 2-5, the 6th micro-valve-driving circuit module 2-6 and the 7th micro-valve-driving circuit module 2-7 and the 3rd micro-valve-driving circuit module 2-3 and the 4th micro-valve-driving circuit module 2-4, control first micro-valve 1-10, second micro-valve 1-14, the 5th micro-valve 1-11, the 6th micro-valve 1-13 and the 7th micro-valve 1-15 close, and control the 3rd micro-valve 1-16 and the 4th micro-valve 1-12 opens, then, described main controller module 4-1 output starts the control signal of minitype gas sampling vacuum pump 2-12 and is transferred to minitype gas sampling vacuum pump drive circuit module 2-13 by sampling unit interface module 4-4, control minitype gas sampling vacuum pump 2-12 and start, micro-fluidic chip 1 is vacuumized, vacuumize after end, described main controller module 4-1 output is closed the control signal of minitype gas sampling vacuum pump 2-12 and is transferred to minitype gas sampling vacuum pump drive circuit module 2-13 by sampling unit interface module 4-4, controls minitype gas sampling vacuum pump 2-12 and closes,
Step 2, micro-fluidic chip 1 carries out gas sampling: described main controller module 4-1 output is closed the 3rd micro-valve 1-16 and opens the control signal of first micro-valve 1-10 and be transferred to respectively the 3rd micro-valve-driving circuit module 2-3 and first micro-valve-driving circuit module 2-1 by sampling unit interface module 4-4, controlling the 3rd micro-valve 1-16 closes, first micro-valve 1-10 opens, micro-fluidic chip 1 starts to carry out gas sampling, colliery underground air enters by air admission hole 1-1 and is first transported in gas-solid two phase separation mechanism 1-7 by gas transmission conduit 1-17, be transported in many described gas analysis microchannels by gas transmission conduit 1-17 again, then, described main controller module 4-1 output is closed the control signal of first micro-valve 1-10 and the 4th micro-valve 1-12 and is transferred to respectively first micro-valve-driving circuit module 2-1 and the 4th micro-valve-driving circuit module 2-4 by sampling unit interface module 4-4, controls first micro-valve 1-10 and the 4th micro-valve 1-12 and closes,
Step 3, the gas characteristic spectral absorption component analysis processing of each gas analysis microchannel in micro-fluidic chip 1: described micro-fluidic chip 1 carries out in gas sampling process, described main controller module 4-1 output starts the control signal detecting and is transferred to microprocessor module 3-1 by detecting unit interface module 4-5, microprocessor module 3-1 controls multiple miniature light-emitting components and starts luminous, the multiple monochromators respectively corresponding complex light by multiple miniature light-emitting component transmittings are decomposed into monochromatic light and therefrom select the monochromatic light with single kind gas characteristic spectral line, multiple photo-detectors respectively corresponding survey monochromatic light that multiple monochromators send and by the signal detecting respectively correspondence export to multiple signal conditioning circuit modules, multiple signal conditioning circuit modules will be exported to microprocessor module 3-1 through its signal after treatment again, microprocessor module 3-1 carries out analyzing and processing to the signal of multiple signal conditioning circuit module outputs respectively, obtain the gas characteristic spectral absorption amount of each gas analysis microchannel in micro-fluidic chip 1 and be transferred to main controller module 4-1 by detecting unit interface module 4-5,
Dust granules quantitative analysis processing in each particle size interval that step 4, dust dispersity selection mechanism 1-8 select: first, described main controller module 4-1 output is opened the control signal of the 5th micro-valve 1-11 and the 7th micro-valve 1-15 and is transferred to respectively the 5th micro-valve-driving circuit module 2-5 and the 7th micro-valve-driving circuit module 2-7 by sampling unit interface module 4-4, controls the 5th micro-valve 1-11 and the 7th micro-valve 1-15 and opens; Then, described main controller module 4-1 output starts the control signal of minitype gas pump 2-10 and is transferred to minitype gas pump drive circuit module 2-11 by sampling unit interface module 4-4, controlling minitype gas pump 2-10 starts, the high-speed gas of minitype gas pump 2-10 output enters into gas-solid two phase separation mechanism 1-7 by high-speed gas delivery conduit 1-20 and fluid delivery conduit 1-19, and isolated dust in gas-solid two phase separation mechanism 1-7 is transported in dust dispersity selection mechanism 1-8 by dust delivery conduit 1-18; Then, dust dispersity selection mechanism 1-8 selects the dust granules in multiple particle size interval successively, microprocessor module 3-1 is counted respectively and exported to dust granules in multiple particle size interval that multiple photoelectric counters are selected dust dispersity selection mechanism 1-8, microprocessor module 3-1 carries out analyzing and processing to the signal of multiple photoelectric counters output respectively, obtains the dust granules quantity in each particle size interval that dust dispersity selection mechanism 1-8 selects and is transferred to main controller module 4-1 by detecting unit interface module 4-5; Then, described main controller module 4-1 output is closed the control signal of minitype gas pump 2-10 and is transferred to minitype gas pump drive circuit module 2-11 by sampling unit interface module 4-4, controls minitype gas pump 2-10 and closes; Finally, described main controller module 4-1 output is closed the control signal of the 5th micro-valve 1-11 and the 7th micro-valve 1-15 and is transferred to respectively the 5th micro-valve-driving circuit module 2-5 and the 7th micro-valve-driving circuit module 2-7 by sampling unit interface module 4-4, controls the 5th micro-valve 1-11 and the 7th micro-valve 1-15 and closes;
Step 5, various gas concentrations in the underground air of colliery, the analyzing and processing of dust concentration and dust dispersity: the dust granules quantity in each particle size interval that in the micro-fluidic chip 1 that described main controller module 4-1 receives it, gas characteristic spectral absorption amount of each gas analysis microchannel and dust dispersity selection mechanism 1-8 select is carried out analyzing and processing, obtain various gas concentrations in the underground air of colliery, dust concentration and dust dispersity, analysis processing result is stored in data storage circuitry module 4-2, and send to coal mine downhole safety supervisory system by wireless communication module 4-6,
Step 6, micro-fluidic chip 1 clean: first, described main controller module 4-1 output is opened the control signal of second micro-valve 1-14, the 4th micro-valve 1-12, the 5th micro-valve 1-11 and the 6th micro-valve 1-13 and is transferred to respectively second micro-valve-driving circuit module 2-2, the 4th micro-valve-driving circuit module 2-4, the 5th micro-valve-driving circuit module 2-5 and the 6th micro-valve-driving circuit module 2-6 by sampling unit interface module 4-4, controls second micro-valve 1-14, the 4th micro-valve 1-12, the 5th micro-valve 1-11 and the 6th micro-valve 1-13 and opens, then, described main controller module 4-1 output starts the control signal of Miniature liquid pump 2-8 and is transferred to Miniature liquid pump drive circuit module 2-9 by sampling unit interface module 4-4, controlling Miniature liquid pump 2-8 starts, Miniature liquid pump 2-8 will be transported in gas-solid two phase separation mechanism 1-7 by fluid delivery conduit 1-19 after the cleaning fluid pressurization in reservoir 2-14, to gas-solid, two phase separation mechanism 1-7 clean, cleaning fluid is transported in dust dispersity selection mechanism 1-8 by dust delivery conduit 1-18 from the dust outlet of gas-solid two phase separation mechanism 1-7 is flowed out, to dust dispersity selection mechanism, 1-8 cleans, cleaning fluid is transported in many described gas analysis microchannels by gas transmission conduit 1-17 from the gas vent of gas-solid two phase separation mechanism 1-7 flows out, many described gas analysis microchannels are cleaned, after cleaning finishes, described main controller module 4-1 output is closed the control signal of Miniature liquid pump 2-8 and is transferred to Miniature liquid pump drive circuit module 2-9 by sampling unit interface module 4-4, controlling Miniature liquid pump 2-8 closes, second micro-valve 1-14 is closed in described main controller module 4-1 output, the control signal of the 5th micro-valve 1-11 and the 6th micro-valve 1-13 is also transferred to respectively second micro-valve-driving circuit module 2-2 by sampling unit interface module 4-4, the 5th micro-valve-driving circuit module 2-5 and the 6th micro-valve-driving circuit module 2-6, control second micro-valve 1-14, the 5th micro-valve 1-11 and the 6th micro-valve 1-13 close.
In the present embodiment, the quantity of the particle size interval that described dust dispersity selection mechanism 1-8 selects is three and is respectively the first particle size interval, the second particle size interval and the 3rd particle size interval, described dust dispersity selection mechanism 1-8 comprises dust dispersity selection mechanism housing 1-81 and is arranged on the first particle size interval dust granules passage 1-82 on dust dispersity selection mechanism housing 1-81, the second particle size interval dust granules passage 1-83 and the 3rd particle size interval dust granules passage 1-84, the dust inlet of described dust dispersity selection mechanism 1-8 and dust outlet are symmetricly set on described dust dispersity selection mechanism housing 1-81, on described the first particle size interval dust granules passage 1-82, be provided with the 8th micro-valve 1-85, on described the second particle size interval dust granules passage 1-83, be provided with the 9th micro-valve 1-86, on described the 3rd particle size interval dust granules passage 1-84, be provided with the tenth micro-valve 1-87, described the first particle size interval dust granules passage 1-82, the second particle size interval dust granules passage 1-83 and the 3rd particle size interval dust granules passage 1-84 are all connected with the dust outlet of described dust dispersity selection mechanism 1-8, described sampling unit 2 comprises the 8th micro-valve-driving circuit module 2-15, the 9th micro-valve-driving circuit module 2-16 and the tenth micro-valve-driving circuit module 2-17, described the 8th micro-valve-driving circuit module 2-15, the 9th micro-valve-driving circuit module 2-16 and the tenth micro-valve-driving circuit module 2-17 all join with described sampling unit interface module 4-4, the output terminal of described the 8th micro-valve 1-85 and described the 8th micro-valve-driving circuit module 2-15 joins, the output terminal of described the 9th micro-valve 1-86 and described the 9th micro-valve-driving circuit module 2-16 joins, the output terminal of described the tenth micro-valve 1-87 and described the tenth micro-valve-driving circuit module 2-17 joins,
In step 4, dust dispersity selection mechanism 1-8 selects successively the process of the dust granules in multiple particle size interval and is: first, described main controller module 4-1 output is opened the control signal of the 8th micro-valve 1-85 and is transferred to the 8th micro-valve-driving circuit module 2-15 by sampling unit interface module 4-4, control the 8th micro-valve 1-85 and open, dust dispersity selection mechanism 1-8 selects the dust granules in the first particle size interval; Then, described main controller module 4-1 output is opened the control signal of the 9th micro-valve 1-86 and is transferred to the 9th micro-valve-driving circuit module 2-16 by sampling unit interface module 4-4, control the 9th micro-valve 1-86 and open, dust dispersity selection mechanism 1-8 selects the dust granules in the second particle size interval; Then, described main controller module 4-1 output is opened the control signal of the tenth micro-valve 1-87 and is transferred to the tenth micro-valve-driving circuit module 2-17 by sampling unit interface module 4-4, control the tenth micro-valve 1-87 and open, dust dispersity selection mechanism 1-8 selects the dust granules in the 3rd particle size interval; After step 7, also need described main controller module 4-1 output to close the control signal of the 8th micro-valve 1-85, the 9th micro-valve 1-86 and the tenth micro-valve 1-87 and be transferred to respectively the 8th micro-valve-driving circuit module 2-15, the 9th micro-valve-driving circuit module 2-16 and the tenth micro-valve-driving circuit module 2-17 by sampling unit interface module 4-4, control the 8th micro-valve 1-85, the 9th micro-valve 1-86 and the tenth micro-valve 1-87 and close.
In sum, micro-fluidic chip 1 for gas-solid two is separated, gas concentration measurement, powder concentration measurement and dust dispersity analysis etc. provide analysis platform, wherein, gas-solid two phase separation mechanism 1-7 have been used for gas componant and dust separation, gas enters many described gas analysis microchannels for measurement of concetration, dust enters dust dispersity selection mechanism 1-8, and the dust granules of selecting in multiple particle size interval supplies powder concentration measurement and dust dispersity analysis; Main controller module 4-1 in main control unit 4 controls sampling unit 2 and detecting unit 3, carrying out gas concentration, dust concentration and dispersion degree data calculates, result store, in data storage circuitry module 4-2, and is sent to coal mine downhole safety supervisory system by wireless communication module 4-6; Each drive circuit module in sampling unit 2 is carried out the control signal that main controller module 4-1 sends, control the on off state of each micro-valve in micro-fluidic chip 1, and drive minitype gas sampling vacuum pump 2-12, minitype gas pump 2-10 to become the work such as quantitative gas sampling, exhaust, dust discharge and cleaning with Miniature liquid pump 2-8; Microprocessor module 3-1 in detecting unit 3 is responsible for the gas characteristic spectral absorption measurement amount of each gas analysis microchannel and measures with the dust granules quantity in each particle size interval, and result is transferred to main controller module 4-1, complete gas concentration, dust concentration and dust dispersity indirect data and measured.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every any simple modification of above embodiment being done according to the technology of the present invention essence, change and equivalent structure change, and all still belong in the protection domain of technical solution of the present invention.

Claims (8)

1. atmospheric monitoring system under a micro-fluidic coal mine, it is characterized in that: comprise micro-fluidic chip (1), sampling unit (2), detecting unit (3) and main control unit (4), on described micro-fluidic chip (1), be provided with air admission hole (1-1), vent port (1-2), dust exhausting hole (1-3), high-speed gas entrance (1-4), liquid inlet (1-5) and vacuum orifice (1-6), described micro-fluidic chip (1) inside is provided with gas-solid two phase separation mechanism (1-7), dust dispersity selection mechanism (1-8) and many gas analysis microchannels, the air intake opening of described gas-solid two phase separation mechanism (1-7) is by gas transmission conduit (1-17) and be arranged on first micro-valve (1-10) on gas transmission conduit (1-17) and join with described air admission hole (1-1), the dust outlet of described gas-solid two phase separation mechanism (1-7) is by dust delivery conduit (1-18) and be arranged on the 5th micro-valve (1-11) on dust delivery conduit (1-18) and the dust inlet of dust dispersity selection mechanism (1-8) joins, the dust outlet of described dust dispersity selection mechanism (1-8) is joined by dust delivery conduit (1-18) and described dust exhausting hole (1-3), the gas vent of described gas-solid two phase separation mechanism (1-7) is by gas transmission conduit (1-17) and be arranged on the 4th micro-valve (1-12) on gas transmission conduit (1-17) and join with the gas access of many articles of described gas analysis microchannels, the gas vent of many articles of described gas analysis microchannels all joins by the 6th micro-valve (1-13) and described vent port (1-2), described gas-solid two phase separation mechanism (1-7) are by fluid delivery conduit (1-19) and be arranged on second micro-valve (1-14) in fluid delivery conduit (1-19) and join with described liquid inlet (1-5), described fluid delivery conduit (1-19) is by high-speed gas delivery conduit (1-20) and be arranged on the 7th micro-valve (1-15) on high-speed gas delivery conduit (1-20) and join with described high-speed gas entrance (1-4), the gas transmission conduit (1-17) that is connected to described gas-solid two phase separation mechanism (1-7) gas outlet joins with described vacuum orifice (1-6) by vacuumizing conduit (1-21) and being arranged on the 3rd micro-valve (1-16) vacuumizing on conduit (1-21),
Described sampling unit (2) comprises first micro-valve-driving circuit module (2-1), second micro-valve-driving circuit module (2-2), the 3rd micro-valve-driving circuit module (2-3), the 4th micro-valve-driving circuit module (2-4), the 5th micro-valve-driving circuit module (2-5), the 6th micro-valve-driving circuit module (2-6) and the 7th micro-valve-driving circuit module (2-7), and Miniature liquid pump (2-8), Miniature liquid pump drive circuit module (2-9), minitype gas pump (2-10), minitype gas pump drive circuit module (2-11), minitype gas sampling vacuum pump (2-12) and minitype gas sampling vacuum pump drive circuit module (2-13), described first micro-valve (1-10) joins with the output terminal of described first micro-valve-driving circuit module (2-1), described second micro-valve (1-14) joins with the output terminal of described second micro-valve-driving circuit module (2-2), described the 3rd micro-valve (1-16) joins with the output terminal of described the 3rd micro-valve-driving circuit module (2-3), described the 4th micro-valve (1-12) joins with the output terminal of described the 4th micro-valve-driving circuit module (2-4), described the 5th micro-valve (1-11) joins with the output terminal of described the 5th micro-valve-driving circuit module (2-5), described the 6th micro-valve (1-13) joins with the output terminal of described the 6th micro-valve-driving circuit module (2-6), described the 7th micro-valve (1-15) joins with the output terminal of described the 7th micro-valve-driving circuit module (2-7), described Miniature liquid pump (2-8) is connected to that described liquid inlet (1-5) is located and joins with the output terminal of described Miniature liquid pump drive circuit module (2-9), on described Miniature liquid pump (2-8), be connected with the reservoir (2-14) for store washing liquid, described minitype gas pump (2-10) is connected to that described high-speed gas entrance (1-4) is located and joins with the output terminal of described minitype gas pump drive circuit module (2-11), described minitype gas sampling vacuum pump (2-12) is connected to that described vacuum orifice (1-6) is located and joins with the output terminal of described minitype gas sampling vacuum pump drive circuit module (2-13),
Described detecting unit (3) comprises microprocessor module (3-1), correspondence is arranged on the multiple miniature light-emitting component on many gas analysis microchannels respectively, the corresponding multiple monochromators that join with multiple miniature light-emitting components respectively, respectively to being applied to single monochromatic multiple photo-detectors of gas characteristic spectral line and corresponding and multiple described photo-detectors join respectively the multiple signal conditioning circuit modules of planting of having of surveying that multiple monochromators send, the input end of described microprocessor module (3-1) is connected to multiple photoelectric counters that the dust granules in the multiple particle size interval for dust dispersity selection mechanism (1-8) is selected is counted respectively, multiple described miniature light-emitting components all join with the output terminal of described microprocessor module (3-1), multiple described signal conditioning circuit modules are all joined with the input end of described microprocessor module (3-1),
The data storage circuitry module (4-2) that described main control unit (4) comprises main controller module (4-1) and joins with described main controller module (4-1), human-computer interaction module (4-3), sampling unit interface module (4-4), detecting unit interface module (4-5) and for information wireless being sent to the wireless communication module (4-6) of coal mine downhole safety supervisory system, described first micro-valve-driving circuit module (2-1), second micro-valve-driving circuit module (2-2), the 3rd micro-valve-driving circuit module (2-3), the 4th micro-valve-driving circuit module (2-4), the 5th micro-valve-driving circuit module (2-5), the 6th micro-valve-driving circuit module (2-6), the 7th micro-valve-driving circuit module (2-7), Miniature liquid pump drive circuit module (2-9), minitype gas pump drive circuit module (2-11) and minitype gas sampling vacuum pump drive circuit module (2-13) all join with described sampling unit interface module (4-4), and described microprocessor module (3-1) joins with described detecting unit interface module (4-5),
Described gas-solid two phase separation mechanism (1-7) comprise gas-solid two phase separation mechanism housings (1-71) and are arranged in gas-solid two phase separation mechanism housings (1-71) and for gas-solid two phase separation mechanism housing (1-71) inner spaces are separated into dust chamber (1-73) and the two-part dust-filtering net of air chamber (1-74) (1-72), the gas access of described gas-solid two phase separation mechanism (1-7) and dust outlet are all arranged on the gas-solid two phase separation mechanism housings (1-71) that are positioned at dust chamber (1-73) part, the gas vent of described gas-solid two phase separation mechanism (1-7) is arranged on the gas-solid two phase separation mechanism housings (1-71) that are positioned at air chamber (1-74) part, described fluid delivery conduit (1-19) is inserted in described dust chamber (1-73) and near described dust-filtering net (1-72) and arranges through described gas-solid two phase separation mechanism housings (1-71),
The baroceptor (3-8) that the input end of described microprocessor module (3-1) is connected to the temperature sensor (3-7) for colliery down-hole ambient temperature is detected and detects for down-hole gas detection in coal mine being compressed into row.
2. according to atmospheric monitoring system under micro-fluidic coal mine claimed in claim 1, it is characterized in that: the quantity of described gas analysis microchannel is six and is respectively oxygen analysis microchannel (1-91), carboloy dioxide analysis microchannel (1-92), methane is analyzed microchannel (1-93), sulphuric dioxide is analyzed microchannel (1-94), carbon monoxide analyzes microchannel (1-95) and sulfuretted hydrogen is analyzed microchannel (1-96), the quantity of corresponding described miniature light-emitting component is six and is respectively the first miniature light-emitting component (3-21) being arranged on oxygen analysis microchannel (1-91), be arranged on the second miniature light-emitting component (3-22) on carboloy dioxide analysis microchannel (1-92), be arranged on methane and analyze the 3rd miniature light-emitting component (3-23) on microchannel (1-93), be arranged on sulphuric dioxide and analyze the 4th miniature light-emitting component (3-24) on microchannel (1-94), being arranged on carbon monoxide analyzes the 5th miniature light-emitting component (3-25) on microchannel (1-95) and is arranged on the 6th miniature light-emitting component (3-26) on sulfuretted hydrogen analysis microchannel (1-96), the quantity of corresponding described monochromator is six and is respectively and joins with the first miniature light-emitting component (3-21) and for the complex light of the first miniature light-emitting component (3-21) transmitting is decomposed into monochromatic light and therefrom selects monochromatic first monochromator (3-31) with oxygen characteristics spectral line, join with the second miniature light-emitting component (3-22) and also therefrom select monochromatic second monochromator (3-32) with carbon dioxide characteristic spectral line for the complex light of the second miniature light-emitting component (3-22) transmitting is decomposed into monochromatic light, join with the 3rd miniature light-emitting component (3-23) and also therefrom select monochromatic the 3rd monochromator (3-33) with methane characteristic spectral line for the complex light of the 3rd miniature light-emitting component (3-23) transmitting is decomposed into monochromatic light, join with the 4th miniature light-emitting component (3-24) and also therefrom select monochromatic the 4th monochromator (3-34) with sulphuric dioxide characteristic spectral line for the complex light of the 4th miniature light-emitting component (3-24) transmitting is decomposed into monochromatic light, join with the 5th miniature light-emitting component (3-25) and there is monochromatic the 5th monochromator (3-35) of carbon monoxide characteristic spectral line and join with the 6th miniature light-emitting component (3-26) and also therefrom select monochromatic the 6th monochromator (3-36) with sulfuretted hydrogen characteristic spectral line for the complex light of the 6th miniature light-emitting component (3-26) transmitting is decomposed into monochromatic light for the complex light of the 5th miniature light-emitting component (3-25) transmitting being decomposed into monochromatic light and therefrom selecting, the quantity of corresponding described photo-detector is six and is respectively monochromatic the first photo-detector (3-41) sending for surveying the first monochromator (3-31), be used for surveying monochromatic the second photo-detector (3-42) that the second monochromator (3-32) sends, be used for surveying monochromatic the 3rd photo-detector (3-43) that the 3rd monochromator (3-33) sends, be used for surveying monochromatic the 4th photo-detector (3-44) that the 4th monochromator (3-34) sends, be used for surveying monochromatic the 5th photo-detector (3-45) that the 5th monochromator (3-35) sends and monochromatic the 6th photo-detector (3-46) sending for surveying the 6th monochromator (3-36), the quantity of corresponding described signal conditioning circuit module is six and is respectively the first signal conditioning circuit module (3-51) joining with the first photo-detector (3-41), the secondary signal conditioning circuit module (3-52) joining with the second photo-detector (3-42), the 3rd signal conditioning circuit module (3-53) of joining with the 3rd photo-detector (3-43), the 4th signal conditioning circuit module (3-54) of joining with the 4th photo-detector (3-44), the 5th signal conditioning circuit module (3-55) of joining with the 5th photo-detector (3-45) and the 6th signal conditioning circuit module (3-56) of joining with the 6th photo-detector (3-46).
3. according to atmospheric monitoring system under micro-fluidic coal mine claimed in claim 1, it is characterized in that: the quantity of the particle size interval that described dust dispersity selection mechanism (1-8) is selected is three and is respectively the first particle size interval, the second particle size interval and the 3rd particle size interval, the quantity of corresponding described photoelectric counter is three and is respectively the first photoelectric counter (3-61) that the dust granules in the first particle size interval for dust dispersity selection mechanism (1-8) is selected is counted, the second photoelectric counter (3-62) of counting for the dust granules in the second particle size interval that dust dispersity selection mechanism (1-8) is selected and the 3rd photoelectric counter (3-63) of counting for the dust granules in the 3rd particle size interval that dust dispersity selection mechanism (1-8) is selected, described dust dispersity selection mechanism (1-8) comprises dust dispersity selection mechanism housing (1-81) and is arranged on the first particle size interval dust granules passage (1-82) on dust dispersity selection mechanism housing (1-81), the second particle size interval dust granules passage (1-83) and the 3rd particle size interval dust granules passage (1-84), the dust inlet of described dust dispersity selection mechanism (1-8) and dust outlet are symmetricly set on described dust dispersity selection mechanism housing (1-81), on described the first particle size interval dust granules passage (1-82), be provided with the 8th micro-valve (1-85), on described the second particle size interval dust granules passage (1-83), be provided with the 9th micro-valve (1-86), on described the 3rd particle size interval dust granules passage (1-84), be provided with the tenth micro-valve (1-87), described the first particle size interval dust granules passage (1-82), the second particle size interval dust granules passage (1-83) and the 3rd particle size interval dust granules passage (1-84) are all connected with the dust outlet of described dust dispersity selection mechanism (1-8), described sampling unit (2) comprises the 8th micro-valve-driving circuit module (2-15), the 9th micro-valve-driving circuit module (2-16) and the tenth micro-valve-driving circuit module (2-17), described the 8th micro-valve-driving circuit module (2-15), the 9th micro-valve-driving circuit module (2-16) and the tenth micro-valve-driving circuit module (2-17) are all joined with described sampling unit interface module (4-4), described the 8th micro-valve (1-85) joins with the output terminal of described the 8th micro-valve-driving circuit module (2-15), described the 9th micro-valve (1-86) joins with the output terminal of described the 9th micro-valve-driving circuit module (2-16), described the tenth micro-valve (1-87) joins with the output terminal of described the tenth micro-valve-driving circuit module (2-17).
4. according to atmospheric monitoring system under micro-fluidic coal mine claimed in claim 3, it is characterized in that: described the first particle size interval dust granules passage (1-82), the quantity of the second particle size interval dust granules passage (1-83) and the 3rd particle size interval dust granules passage (1-84) is three, corresponding described the 8th micro-valve (1-85), the quantity of the 9th micro-valve (1-86) and the tenth micro-valve (1-87) is three, corresponding described the 8th micro-valve-driving circuit module (2-15), the quantity of the 9th micro-valve-driving circuit module (2-16) and the tenth micro-valve-driving circuit module (2-17) is three, three described the first particle size interval dust granules passages (1-82), three described the second particle size interval dust granules passages (1-83) and three described the 3rd particle size interval dust granules passage (1-84) spaces arrange.
5. according to atmospheric monitoring system under micro-fluidic coal mine claimed in claim 3, it is characterized in that: described the first particle size interval is 0.1 μ m～2.5 μ m, described the second particle size interval is 2.5 μ m～10 μ m, and described the 3rd particle size interval is 10 μ m～100 μ m.
6. according to atmospheric monitoring system under micro-fluidic coal mine claimed in claim 1, it is characterized in that: described human-computer interaction module (4-3) is touch LCD screen, and described wireless communication module (4-6) is ZIGBEE wireless communication module (4-6).
7. utilize an air monitering method under the micro-fluidic coal mine of system as claimed in claim 1, it is characterized in that the method comprises the following steps:
Step 1, micro-fluidic chip (1) is vacuumized: first, first micro-valve (1-10) is closed in described main controller module (4-1) output, second micro-valve (1-14), the 5th micro-valve (1-11), the 6th micro-valve (1-13) and the 7th micro-valve (1-15) and open the 3rd micro-valve (1-16) and the 4th micro-valve (1-12) control signal and be transferred to respectively first micro-valve-driving circuit module (2-1) by sampling unit interface module (4-4), second micro-valve-driving circuit module (2-2), the 5th micro-valve-driving circuit module (2-5), the 6th micro-valve-driving circuit module (2-6) and the 7th micro-valve-driving circuit module (2-7) and the 3rd micro-valve-driving circuit module (2-3) and the 4th micro-valve-driving circuit module (2-4), control first micro-valve (1-10), second micro-valve (1-14), the 5th micro-valve (1-11), the 6th micro-valve (1-13) and the 7th micro-valve (1-15) are closed, and control the 3rd micro-valve (1-16) and the 4th micro-valve (1-12) is opened, then, described main controller module (4-1) output starts the control signal of minitype gas sampling vacuum pump (2-12) and is transferred to minitype gas sampling vacuum pump drive circuit module (2-13) by sampling unit interface module (4-4), control minitype gas sampling vacuum pump (2-12) and start, micro-fluidic chip (1) is vacuumized, vacuumize after end, described main controller module (4-1) output is closed the control signal of minitype gas sampling vacuum pump (2-12) and is transferred to minitype gas sampling vacuum pump drive circuit module (2-13) by sampling unit interface module (4-4), controls minitype gas sampling vacuum pump (2-12) and closes,
Step 2, micro-fluidic chip (1) carries out gas sampling: described main controller module (4-1) output is closed the 3rd micro-valve (1-16) and opened the control signal of first micro-valve (1-10) and be transferred to respectively the 3rd micro-valve-driving circuit module (2-3) and first micro-valve-driving circuit module (2-1) by sampling unit interface module (4-4), controlling the 3rd micro-valve (1-16) closes, first micro-valve (1-10) is opened, micro-fluidic chip (1) starts to carry out gas sampling, colliery underground air enters by air admission hole (1-1) and is first transported in gas-solid two phase separation mechanism (1-7) by gas transmission conduit (1-17), be transported in many described gas analysis microchannels by gas transmission conduit (1-17) again, then, described main controller module (4-1) output is closed the control signal of first micro-valve (1-10) and the 4th micro-valve (1-12) and is transferred to respectively first micro-valve-driving circuit module (2-1) and the 4th micro-valve-driving circuit module (2-4) by sampling unit interface module (4-4), controls first micro-valve (1-10) and the 4th micro-valve (1-12) and closes,
Step 3, the gas characteristic spectral absorption component analysis processing of each gas analysis microchannel in micro-fluidic chip (1): described micro-fluidic chip (1) carries out in gas sampling process, described main controller module (4-1) output starts the control signal detecting and is transferred to microprocessor module (3-1) by detecting unit interface module (4-5), microprocessor module (3-1) is controlled multiple miniature light-emitting components and is started luminous, the multiple monochromators respectively corresponding complex light by multiple miniature light-emitting component transmittings are decomposed into monochromatic light and therefrom select the monochromatic light with single kind gas characteristic spectral line, multiple photo-detectors respectively corresponding survey monochromatic light that multiple monochromators send and by the signal detecting respectively correspondence export to multiple signal conditioning circuit modules, multiple signal conditioning circuit modules will be exported to microprocessor module (3-1) through its signal after treatment again, microprocessor module (3-1) carries out analyzing and processing to the signal of multiple signal conditioning circuit module outputs respectively, obtain the gas characteristic spectral absorption amount of each gas analysis microchannel in micro-fluidic chip (1) and be transferred to main controller module (4-1) by detecting unit interface module (4-5),
Dust granules quantitative analysis processing in each particle size interval that step 4, dust dispersity selection mechanism (1-8) are selected: first, described main controller module (4-1) output is opened the control signal of the 5th micro-valve (1-11) and the 7th micro-valve (1-15) and is transferred to respectively the 5th micro-valve-driving circuit module (2-5) and the 7th micro-valve-driving circuit module (2-7) by sampling unit interface module (4-4), controls the 5th micro-valve (1-11) and the 7th micro-valve (1-15) and opens, then, described main controller module (4-1) output starts the control signal of minitype gas pump (2-10) and is transferred to minitype gas pump drive circuit module (2-11) by sampling unit interface module (4-4), controlling minitype gas pump (2-10) starts, the high-speed gas of minitype gas pump (2-10) output enters into gas-solid two phase separation mechanism (1-7) by high-speed gas delivery conduit (1-20) and fluid delivery conduit (1-19), and isolated dust in gas-solid two phase separation mechanism (1-7) is transported in dust dispersity selection mechanism (1-8) by dust delivery conduit (1-18), then, the dust granules in multiple particle size interval is selected in dust dispersity selection mechanism (1-8) successively, microprocessor module (3-1) is counted respectively and exported to dust granules in multiple particle size interval that multiple photoelectric counters are selected dust dispersity selection mechanism (1-8), microprocessor module (3-1) carries out analyzing and processing to the signal of multiple photoelectric counter outputs respectively, obtain the dust granules quantity in each particle size interval that dust dispersity selection mechanism (1-8) selects and be transferred to main controller module (4-1) by detecting unit interface module (4-5), then, described main controller module (4-1) output is closed the control signal of minitype gas pump (2-10) and is transferred to minitype gas pump drive circuit module (2-11) by sampling unit interface module (4-4), controls minitype gas pump (2-10) and closes, finally, described main controller module (4-1) output is closed the control signal of the 5th micro-valve (1-11) and the 7th micro-valve (1-15) and is transferred to respectively the 5th micro-valve-driving circuit module (2-5) and the 7th micro-valve-driving circuit module (2-7) by sampling unit interface module (4-4), controls the 5th micro-valve (1-11) and the 7th micro-valve (1-15) and closes,
Step 5, various gas concentrations in the underground air of colliery, the analyzing and processing of dust concentration and dust dispersity: the dust granules quantity in each particle size interval that in the micro-fluidic chip (1) that described main controller module (4-1) receives it, gas characteristic spectral absorption amount of each gas analysis microchannel and dust dispersity selection mechanism (1-8) are selected is carried out analyzing and processing, obtain various gas concentrations in the underground air of colliery, dust concentration and dust dispersity, analysis processing result is stored in data storage circuitry module (4-2), and send to coal mine downhole safety supervisory system by wireless communication module (4-6),
Step 6, micro-fluidic chip (1) cleans: first, second micro-valve (1-14) is opened in described main controller module (4-1) output, the 4th micro-valve (1-12), the control signal of the 5th micro-valve (1-11) and the 6th micro-valve (1-13) is also transferred to respectively second micro-valve-driving circuit module (2-2) by sampling unit interface module (4-4), the 4th micro-valve-driving circuit module (2-4), the 5th micro-valve-driving circuit module (2-5) and the 6th micro-valve-driving circuit module (2-6), control second micro-valve (1-14), the 4th micro-valve (1-12), the 5th micro-valve (1-11) and the 6th micro-valve (1-13) are opened, then, described main controller module (4-1) output starts the control signal of Miniature liquid pump (2-8) and is transferred to Miniature liquid pump drive circuit module (2-9) by sampling unit interface module (4-4), controlling Miniature liquid pump (2-8) starts, Miniature liquid pump (2-8) will be transported in gas-solid two phase separation mechanism (1-7) by fluid delivery conduit (1-19) after the cleaning fluid pressurization in reservoir (2-14), gas-solid two phase separation mechanism (1-7) are cleaned, cleaning fluid is transported in dust dispersity selection mechanism (1-8) by dust delivery conduit (1-18) from the dust outlet of gas-solid two phase separation mechanism (1-7) is flowed out, dust dispersity selection mechanism (1-8) is cleaned, cleaning fluid is transported in many described gas analysis microchannels by gas transmission conduit (1-17) from the gas vent of gas-solid two phase separation mechanism (1-7) flows out, many described gas analysis microchannels are cleaned, after cleaning finishes, described main controller module (4-1) output is closed the control signal of Miniature liquid pump (2-8) and is transferred to Miniature liquid pump drive circuit module (2-9) by sampling unit interface module (4-4), controlling Miniature liquid pump (2-8) closes, second micro-valve (1-14) is closed in described main controller module (4-1) output, the control signal of the 5th micro-valve (1-11) and the 6th micro-valve (1-13) is also transferred to respectively second micro-valve-driving circuit module (2-2) by sampling unit interface module (4-4), the 5th micro-valve-driving circuit module (2-5) and the 6th micro-valve-driving circuit module (2-6), control second micro-valve (1-14), the 5th micro-valve (1-11) and the 6th micro-valve (1-13) are closed.
8. in accordance with the method for claim 7, it is characterized in that: the quantity of the particle size interval that described dust dispersity selection mechanism (1-8) is selected is three and is respectively the first particle size interval, the second particle size interval and the 3rd particle size interval, described dust dispersity selection mechanism (1-8) comprises dust dispersity selection mechanism housing (1-81) and is arranged on the first particle size interval dust granules passage (1-82) on dust dispersity selection mechanism housing (1-81), the second particle size interval dust granules passage (1-83) and the 3rd particle size interval dust granules passage (1-84), the dust inlet of described dust dispersity selection mechanism (1-8) and dust outlet are symmetricly set on described dust dispersity selection mechanism housing (1-81), on described the first particle size interval dust granules passage (1-82), be provided with the 8th micro-valve (1-85), on described the second particle size interval dust granules passage (1-83), be provided with the 9th micro-valve (1-86), on described the 3rd particle size interval dust granules passage (1-84), be provided with the tenth micro-valve (1-87), described the first particle size interval dust granules passage (1-82), the second particle size interval dust granules passage (1-83) and the 3rd particle size interval dust granules passage (1-84) are all connected with the dust outlet of described dust dispersity selection mechanism (1-8), described sampling unit (2) comprises the 8th micro-valve-driving circuit module (2-15), the 9th micro-valve-driving circuit module (2-16) and the tenth micro-valve-driving circuit module (2-17), described the 8th micro-valve-driving circuit module (2-15), the 9th micro-valve-driving circuit module (2-16) and the tenth micro-valve-driving circuit module (2-17) are all joined with described sampling unit interface module (4-4), described the 8th micro-valve (1-85) joins with the output terminal of described the 8th micro-valve-driving circuit module (2-15), described the 9th micro-valve (1-86) joins with the output terminal of described the 9th micro-valve-driving circuit module (2-16), described the tenth micro-valve (1-87) joins with the output terminal of described the tenth micro-valve-driving circuit module (2-17),
In step 4, dust dispersity selection mechanism (1-8) is selected successively the process of the dust granules in multiple particle size interval and is: first, described main controller module (4-1) output is opened the control signal of the 8th micro-valve (1-85) and is transferred to the 8th micro-valve-driving circuit module (2-15) by sampling unit interface module (4-4), control the 8th micro-valve (1-85) and open, the dust granules in the first particle size interval is selected in dust dispersity selection mechanism (1-8); Then, described main controller module (4-1) output is opened the control signal of the 9th micro-valve (1-86) and is transferred to the 9th micro-valve-driving circuit module (2-16) by sampling unit interface module (4-4), control the 9th micro-valve (1-86) and open, the dust granules in the second particle size interval is selected in dust dispersity selection mechanism (1-8); Then, described main controller module (4-1) output is opened the control signal of the tenth micro-valve (1-87) and is transferred to the tenth micro-valve-driving circuit module (2-17) by sampling unit interface module (4-4), control the tenth micro-valve (1-87) and open, the dust granules in the 3rd particle size interval is selected in dust dispersity selection mechanism (1-8); After step 7, also need described main controller module (4-1) output close the control signal of the 8th micro-valve (1-85), the 9th micro-valve (1-86) and the tenth micro-valve (1-87) and be transferred to respectively the 8th micro-valve-driving circuit module (2-15), the 9th micro-valve-driving circuit module (2-16) and the tenth micro-valve-driving circuit module (2-17) by sampling unit interface module (4-4), control the 8th micro-valve (1-85), the 9th micro-valve (1-86) and the tenth micro-valve (1-87) and close.
CN201310128166.7A 2013-04-13 2013-04-13 Microfluidic underground coal mine air monitoring system and method Expired - Fee Related CN103197086B (en)

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