CN203053827U - Dust concentration sensor circuit for coal mine dust detection - Google Patents
Dust concentration sensor circuit for coal mine dust detection Download PDFInfo
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- CN203053827U CN203053827U CN 201320040814 CN201320040814U CN203053827U CN 203053827 U CN203053827 U CN 203053827U CN 201320040814 CN201320040814 CN 201320040814 CN 201320040814 U CN201320040814 U CN 201320040814U CN 203053827 U CN203053827 U CN 203053827U
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- circuit
- dust
- sensing probe
- photomultiplier tube
- coal mine
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- 239000000428 dust Substances 0.000 title claims abstract description 27
- 239000003245 coal Substances 0.000 title claims abstract description 13
- 238000001514 detection method Methods 0.000 title claims abstract description 5
- 239000000523 sample Substances 0.000 claims abstract description 13
- 230000010354 integration Effects 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract 5
- 230000003287 optical effect Effects 0.000 claims abstract 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 239000002817 coal dust Substances 0.000 description 8
- 238000004880 explosion Methods 0.000 description 6
- 238000005065 mining Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 208000028571 Occupational disease Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 206010035653 pneumoconiosis Diseases 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
一种煤矿粉尘检测用粉尘浓度传感器电路，涉及电子信息技术领域，包括用于采集含尘气体的传感探头，所述的传感探头经光电倍增管连接到光电积分电路，所述的光电积分电路经转换电路连接到频率信号输出电路和显示电路，光电倍增管将传感探头的信号转换成光信号，再经光电流积分电路转换成与散射光成正比的电信号，此电信号再通过转换电路变换为频率信号进行输出，同时经计算后得出粉尘的质量浓度进行显示，传感器电路还包括本安电源，所述的本安电源经5VDC稳压电路连接高压发生电路，所述的高压发生电路连接到光电倍增管及光电流积分电路为其提供电源。本实用新型能够适应于煤矿中的恶劣环境，整体电路模块设计合理，运行稳定，具有很高的灵敏度。
A dust concentration sensor circuit for coal mine dust detection, related to the field of electronic information technology, including a sensing probe for collecting dust-containing gas, the sensing probe is connected to a photoelectric integration circuit through a photomultiplier tube, and the photoelectric integration The circuit is connected to the frequency signal output circuit and the display circuit through the conversion circuit. The photomultiplier tube converts the signal of the sensing probe into an optical signal, and then converts it into an electrical signal proportional to the scattered light through the photocurrent integration circuit. The electrical signal passes through the The conversion circuit is converted into a frequency signal for output, and at the same time, the mass concentration of dust is obtained for display after calculation. The sensor circuit also includes an intrinsically safe power supply. The intrinsically safe power supply is connected to a high-voltage generating circuit through a 5VDC voltage regulator circuit. The generating circuit is connected to the photomultiplier tube and the photocurrent integrating circuit to provide power for it. The utility model can be adapted to the severe environment in the coal mine, and the whole circuit module has reasonable design, stable operation and high sensitivity.
Description
Technical field
The utility model relates to electronic information technical field, is specifically related to a kind of Mine Dust detection sensor of dust concentration circuit.
Background technology
Coal is the main energy sources of China, occupies an important position in the national economy energy structure, accounts for more than 76% in China's primary energy consumption.Along with fast development of national economy, the demand of coal is increasing, and in recent years, raw coal output increased rapidly, and only national raw coal output in 2007 has just surpassed 2,000,000,000 tons.Along with production-scale expansion, the pollution caused by coal dust situation is also more and more serious.
Coal dust belongs to dust, result from coal exploitation, store up, link such as transportation and processing and utilization, one of primary pollution source of the fabrication process place gas phase factor.With regard to the industry of colliery, in coal production process, nearly all operation all can produce dust.Along with the increasing of coal production mechanization degree and improving constantly of coal mining intensity, the coal dust generation of each job steps such as rock drilling, explosion, loading and unloading, fragmentation, transportation is rolling up.Under the situation of no dust prevention, the dust concentration of blast mining face can reach 300-500mg/m
3, the dust concentration of machine mining face can reach 1000-3000mg/m
3, the dust concentration of fully-mechanized mining working can reach 4000-8000mg/m
3The environment in severe contamination operation place, the harm worker is healthy, the influence safety in production.
In China, pneumoconiosis is one of main occupational illness.Along with the quickening of the paces of reforming and opening up to the outside world in recent years, economic fast development, society is to the increase of the energy and industrial and mining products demand, and the influence that the dust disaster produces progressively enlarges.And coal dust has explosivity, is suspended in aerial and reaches finite concentration, if at this moment there is the thermal source of the coal dust that can ignite that coal dust explosion will take place.The coal dust explosion meeting takes place such as the same serious accident of the especially big gas explosion in colliery.For the colliery, the consequence of coal dust explosion is more serious than gas explosion, and the former will produce a large amount of choke damp carbon dioxide and toxic atmospheric CO, causes the miner to poison or death; The latter mainly produces water vapor and carbon dioxide.Therefore the monitoring for Mine Dust seems particularly important, has relatively high expectations for the sensor that detects usefulness especially.
The utility model content
It is a kind of simple in structure that technical problem to be solved in the utility model is to provide, and futuramic Mine Dust detects uses the sensor of dust concentration circuit.
Technical problem to be solved in the utility model realizes by the following technical solutions:
A kind of Mine Dust detects uses the sensor of dust concentration circuit, comprise for the sensing probe of gathering dusty gas, described sensing probe is connected to the photoelectric integration circuit through photomultiplier, described photoelectric integration circuit is connected to frequency signal output circuit and display circuit through change-over circuit, photomultiplier converts the signal of sensing probe to light signal, convert the electric signal that is directly proportional with scattered light to through the photocurrent integrating circuit again, it is that the frequency signal of 200-1000Hz is exported that this electric signal is transformed to frequency by change-over circuit again, the mass concentration that draws simultaneously dust after as calculated shows, sensor circuit also comprises intrinsic safety electric source, described intrinsic safety electric source connects high-pressure generating circuit through the 5VDC mu balanced circuit, and described high-pressure generating circuit is connected to photomultiplier and the photocurrent integrating circuit provides power supply for it.
Described change-over circuit comprises an A/D converter.
The beneficial effects of the utility model are: the utility model can be adapted to the rugged surroundings in the colliery, and the integrated circuit reasonable module design is stable, has very high sensitivity.
Description of drawings
Fig. 1 is the utility model schematic block circuit diagram.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1, a kind of Mine Dust detects uses the sensor of dust concentration circuit, comprise for the sensing probe of gathering dusty gas, sensing probe is connected to the photoelectric integration circuit through photomultiplier, the photoelectric integration circuit is connected to frequency signal output circuit and display circuit through change-over circuit, photomultiplier converts the signal of sensing probe to light signal, convert the electric signal that is directly proportional with scattered light to through the photocurrent integrating circuit again, it is that the frequency signal of 200-1000Hz is exported that this electric signal is transformed to frequency by change-over circuit again, the mass concentration that draws simultaneously dust after as calculated shows, sensor circuit also comprises intrinsic safety electric source, intrinsic safety electric source connects high-pressure generating circuit through the 5VDC mu balanced circuit, high-pressure generating circuit is connected to photomultiplier and the photocurrent integrating circuit provides power supply for it, and change-over circuit comprises an A/D converter.
The sensing probe extraneous air enters under the attraction of fan and attracts mouth, enters the detecting device darkroom through guiding device (covering extraneous light).Directional light in the darkroom meets at right angles to intersect with the visual field of light accepting part and constitutes the sensitive volume, when dust passes through the sensitive volume, its 90 ℃ of direction scattered lights inject photomultiplier through slit and convert photocurrent to, convert the electric signal that is directly proportional with scattered light to through the photocurrent integrating circuit.This electric signal is transformed to the frequency signal that frequency is 200-1000Hz by amplifying circuit and A/D change-over circuit again, draws the mass concentration of dust simultaneously after software calculates.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040814 CN203053827U (en) | 2013-01-24 | 2013-01-24 | Dust concentration sensor circuit for coal mine dust detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320040814 CN203053827U (en) | 2013-01-24 | 2013-01-24 | Dust concentration sensor circuit for coal mine dust detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203053827U true CN203053827U (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320040814 Expired - Fee Related CN203053827U (en) | 2013-01-24 | 2013-01-24 | Dust concentration sensor circuit for coal mine dust detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203053827U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608276A (en) * | 2017-10-25 | 2018-01-19 | 安徽华创环保设备科技有限公司 | A kind of workshop dust inspection and control system |
-
2013
- 2013-01-24 CN CN 201320040814 patent/CN203053827U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107608276A (en) * | 2017-10-25 | 2018-01-19 | 安徽华创环保设备科技有限公司 | A kind of workshop dust inspection and control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130710 Termination date: 20140124 |