CN202486087U - High-concentration methane sensor for coal mine pipeline - Google Patents
High-concentration methane sensor for coal mine pipeline Download PDFInfo
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- CN202486087U CN202486087U CN2011205160117U CN201120516011U CN202486087U CN 202486087 U CN202486087 U CN 202486087U CN 2011205160117 U CN2011205160117 U CN 2011205160117U CN 201120516011 U CN201120516011 U CN 201120516011U CN 202486087 U CN202486087 U CN 202486087U
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Abstract
The utility model discloses a high-concentration methane sensor for a coal mine pipeline, which comprises a singlechip control part circuit, a power supply part circuit, a sensing head and detection electric bridge part circuit, a remote control infrared joint part circuit, a display circuit, a key control part circuit, a frequency signal output part circuit and an A/D (Analogue/Digital) converter. The high-concentration methane sensor is characterized in that the singlechip control part circuit is connected with the display circuit, the A/D converter and the frequency signal output part circuit, the sensing head and detection electric bridge part circuit output differential type mV-level signals, the differential type mV-level signals are sent to the A/D converter to be converted into digital signals through filtration and amplification and the digital signals are read by the singlechip control part circuit; and the remote infrared joint part circuit is used for converting various key commands of the key control part circuit into serial infrared light coding signals to be sent outside, and a receiver is used for converting the serial infrared light coding signals into serial electrical signals to be sent to the singlechip control part circuit to be processed, so that various control functions are completed. The high-concentration methane sensor has the advantages of high measurement precision, long timing period, good repeatability, wide measurement range and long service life.
Description
Technical field
The utility model relates to eudiometry device technique field, is specifically related to a kind of colliery pipeline with high dense methane transducer.
Background technology
Mine safety is China's problem demanding prompt solution all the time, and Coal Production is faced with many difficulties, and, MP imperfection low like mechanization degree, technical merit are low etc.; These all are the hidden danger of mine safety, and can there be flammable explosive gas in the colliery in process of production, and these flammable explosive gas are main threats of mine safety problem; In recent years; The mine safety explosion accident frequently takes place, and when having caused huge economy and personal casualty loss, has also caused the pollution of environment; Along with gas detection sensor applies in the Coal Production; Safety of Coal Mine Production gets a new look to a certain extent; As the principal ingredient of gas, rock gas, hole gas and indication coal gas, methane is the gas of no color or smell, has only through sensitive reliable detection instrument and just can detect; Methane transducer can be reported to the police automatically when methane concentration transfinites and sent the methane concentration signal that detects to associate device continuously, avoids the generation of accident; In the existing methane transducer technology; The sensitivity of sensor is had a greatly reduced quality when encountering problems, and detecting reliability reduces, and the concentration of detection methane is in 4%; Detection for high concentration methane can't realize; It is slow to detect the response time, and generally at 20s one 30s, this just makes Safety of Coal Mine Production have great hidden danger.
The utility model content
The utility model technical matters to be solved be to provide a kind of intellectuality, multi-functional, measure accurate colliery pipeline with high dense methane transducer.
The utility model technical matters to be solved adopts following technical scheme to realize,
A kind of colliery pipeline is with high dense methane transducer; By Single-chip Controlling partial circuit, power supply partial circuit, sensing head and detect electric bridge partial circuit, the infrared shank circuit of remote control, display circuit, form by key control section circuit, frequency signal output circuit and A/D transducer; It is characterized in that: described Single-chip Controlling partial circuit control linkage display circuit, A/D transducer and frequency signal output circuit; Described sensing head and detection electric bridge partial circuit are output as the mV level signal of differential type, signal through filtering, amplify and to send into the A/D transducer and convert digital signal to and read by the Single-chip Controlling partial circuit;
The infrared shank circuit of described remote control will convert serial infrared light coded signal by the various key commands of key control section circuit to and send; Receiver converts serial infrared light coded signal to serial electric signal and send the Single-chip Controlling partial circuit to handle, and accomplishes various control function;
Described power supply partial circuit one tunnel is transformed into 3.3V and surely becomes 3.0V to supply to detect the electric bridge use through mu balanced circuit again through the DC/DC transducer, and another route DC-DC is transformed into 5V and supplies the instrument circuit to use.
Described Single-chip Controlling partial circuit also is connected with warning circuit, and described warning circuit comprises that low-voltage is reported to the police and high-concentration and low-concentration is reported to the police.
Described sensing head and detection electric bridge partial circuit comprise a sensing head, and described sensing head is made up of air chamber and heat conducting element, and this heat conducting element is to the very sensitive heat conducting element of methane gas; Heat conducting element and resistance are formed one and are detected electric bridge, and heat conducting element is placed air chamber, apply WV; During no gas, electric bridge is in balance, is output as zero, when methane gas gets into air chamber; When touching the heat conducting element surface, the temperature of heat conducting element raises, and resistance increases; So destroyed the detection bridge balance, in certain gas density scope, produced the DC voltage output signal that is proportional to gas density.
Single-chip microcomputer in the described Single-chip Controlling partial circuit adopts STM32F103, in program, embeds real-time system,, gets into and interrupts incident is handled when event occurs when outside, accomplishes in real time, and is efficient, accurately.
The beneficial effect of the utility model is:
1. the utility model adopts thermal conductance catalysis detection technique to detect concentration of methane gas, has that measuring accuracy height, adjustment cycle length, good reproducibility, measurement range are wide, long service life, does not receive advantage such as other gases affect.
2. the utility model adopts high-performance single-chip microcomputer and high integrated digital circuit in design, simple in structure, dependable performance, debugging, easy to maintenance.
3. the zero point of the utility model, sensitivity and alarm set point all adopt IR remote controller to regulate.
4. but the utility model removes continuous detecting gas, also has sound and light alarm, and functions such as frequency current signal output have realized a tractor serves several purposes, use, easy to maintenance.
5. the shell of the utility model has adopted high-strength structure design, strong shock resistance.
6. the utility model is mainly used in the continuous detecting of gas discharge in mine pipeline methane gas concentration, is applicable to gas discharge in mine pipeline and other gas pipe line high concentration gas gas-monitoring place.
Description of drawings
Fig. 1 is the utility model functional-block diagram.
[0020] embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand understanding with effect, below in conjunction with concrete diagram, further set forth the utility model.
As shown in Figure 1; A kind of colliery pipeline is with high dense methane transducer; By Single-chip Controlling partial circuit, power supply partial circuit, sensing head and detect electric bridge partial circuit, the infrared shank circuit of remote control, display circuit, form by key control section circuit, frequency signal output circuit and A/D transducer; Single-chip Controlling partial circuit control linkage display circuit, A/D transducer and frequency signal output circuit; Sensing head and detect the mV level signal that the electric bridge partial circuit is output as differential type, signal through filtering, amplify and send into the A/D transducer and convert digital signal to and read by the Single-chip Controlling partial circuit;
The infrared shank circuit of remote control will convert serial infrared light coded signal by the various key commands of key control section circuit to and send; Receiver converts serial infrared light coded signal to serial electric signal and send the Single-chip Controlling partial circuit to handle, and accomplishes various control function;
Power supply partial circuit one tunnel is transformed into 3.3V and surely becomes 3.0V to supply to detect the electric bridge use through mu balanced circuit again through the DC/DC transducer, and another route DC-DC is transformed into 5V and supplies the instrument circuit to use.
The Single-chip Controlling partial circuit also is connected with warning circuit, and warning circuit comprises that low-voltage is reported to the police and high-concentration and low-concentration is reported to the police.
Sensing head and detection electric bridge partial circuit comprise a sensing head, and sensing head is made up of air chamber and heat conducting element, and this heat conducting element is to the very sensitive heat conducting element of methane gas; Heat conducting element and resistance are formed one and are detected electric bridge, and heat conducting element is placed air chamber, apply WV; During no gas, electric bridge is in balance, is output as zero, when methane gas gets into air chamber; When touching the heat conducting element surface, the temperature of heat conducting element raises, and resistance increases; So destroyed the detection bridge balance, in certain gas density scope, produced the DC voltage output signal that is proportional to gas density.Single-chip microcomputer in the Single-chip Controlling partial circuit adopts STM32F103, in program, embeds real-time system,, gets into and interrupts incident is handled when event occurs when outside, accomplishes in real time, and is efficient, accurately.
More than show and described ultimate principle of the utility model and the advantage of principal character and the utility model.The technician of the industry should understand; The utility model is not restricted to the described embodiments; The principle of describing in the foregoing description and the instructions that the utility model just is described; 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 variations and improvement all fall in the utility model scope that requires protection.The utility model requires protection domain to be defined by appending claims and equivalent thereof.
Claims (4)
1. the colliery pipeline is with high dense methane transducer; By Single-chip Controlling partial circuit, power supply partial circuit, sensing head and detect electric bridge partial circuit, the infrared shank circuit of remote control, display circuit, form by key control section circuit, frequency signal output circuit and A/D transducer; It is characterized in that: described Single-chip Controlling partial circuit control linkage display circuit, A/D transducer and frequency signal output circuit; Described sensing head and detection electric bridge partial circuit are output as the mV level signal of differential type, signal through filtering, amplify and to send into the A/D transducer and convert digital signal to and read by the Single-chip Controlling partial circuit;
The infrared shank circuit of described remote control will convert serial infrared light coded signal by the various key commands of key control section circuit to and send; Receiver converts serial infrared light coded signal to serial electric signal and send the Single-chip Controlling partial circuit to handle, and accomplishes various control function;
Described power supply partial circuit one tunnel is transformed into 3.3V and surely becomes 3.0V to supply to detect the electric bridge use through mu balanced circuit again through the DC/DC transducer, and another route DC-DC is transformed into 5V and supplies the instrument circuit to use.
2. colliery according to claim 1 pipeline is characterized in that with high dense methane transducer: described Single-chip Controlling partial circuit also is connected with warning circuit, and described warning circuit comprises that low-voltage is reported to the police and high-concentration and low-concentration is reported to the police.
3. colliery according to claim 1 pipeline is characterized in that with high dense methane transducer: described sensing head and detection electric bridge partial circuit comprise a sensing head, and described sensing head is made up of air chamber and heat conducting element; Heat conducting element and resistance are formed one and are detected electric bridge, and heat conducting element is placed air chamber, apply WV; During no gas, electric bridge is in balance, is output as zero, when methane gas gets into air chamber; When touching the heat conducting element surface, the temperature of heat conducting element raises, and resistance increases; So destroyed the detection bridge balance, in certain gas density scope, produced the DC voltage output signal that is proportional to gas density.
4. colliery according to claim 1 pipeline is characterized in that with high dense methane transducer: the single-chip microcomputer in the described Single-chip Controlling partial circuit adopts STM32F103.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205160117U CN202486087U (en) | 2011-12-12 | 2011-12-12 | High-concentration methane sensor for coal mine pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205160117U CN202486087U (en) | 2011-12-12 | 2011-12-12 | High-concentration methane sensor for coal mine pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN202486087U true CN202486087U (en) | 2012-10-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205160117U Expired - Fee Related CN202486087U (en) | 2011-12-12 | 2011-12-12 | High-concentration methane sensor for coal mine pipeline |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234906A (en) * | 2013-04-15 | 2013-08-07 | 贵州省教育厅 | Infrared methane determination device for mining emergency risk avoiding system |
| CN103411883A (en) * | 2013-08-23 | 2013-11-27 | 四川省川煤科技有限公司 | Methane detection warning instrument |
| CN103954652A (en) * | 2014-04-25 | 2014-07-30 | 华南理工大学 | Intelligent methane full-range sensor and full-range methane concentration measurement method thereof |
| CN105717173A (en) * | 2016-03-30 | 2016-06-29 | 济南本安科技发展有限公司 | Two-wire toxic gas detector with digital display function |
| CN110108942A (en) * | 2019-01-17 | 2019-08-09 | 天津大学 | A kind of automatic measurement methane transducer resistance value system |
| CN111948729A (en) * | 2020-08-14 | 2020-11-17 | 河南理工大学 | Multi-mode and multi-node based underground coal mine hidden fire source detection system |
-
2011
- 2011-12-12 CN CN2011205160117U patent/CN202486087U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103234906A (en) * | 2013-04-15 | 2013-08-07 | 贵州省教育厅 | Infrared methane determination device for mining emergency risk avoiding system |
| CN103411883A (en) * | 2013-08-23 | 2013-11-27 | 四川省川煤科技有限公司 | Methane detection warning instrument |
| CN103954652A (en) * | 2014-04-25 | 2014-07-30 | 华南理工大学 | Intelligent methane full-range sensor and full-range methane concentration measurement method thereof |
| CN103954652B (en) * | 2014-04-25 | 2016-08-24 | 华南理工大学 | A kind of Intelligent methane all range sensor and full scale methane concentration measuring method thereof |
| CN105717173A (en) * | 2016-03-30 | 2016-06-29 | 济南本安科技发展有限公司 | Two-wire toxic gas detector with digital display function |
| CN110108942A (en) * | 2019-01-17 | 2019-08-09 | 天津大学 | A kind of automatic measurement methane transducer resistance value system |
| CN111948729A (en) * | 2020-08-14 | 2020-11-17 | 河南理工大学 | Multi-mode and multi-node based underground coal mine hidden fire source detection system |
| CN111948729B (en) * | 2020-08-14 | 2023-05-23 | 河南理工大学 | Underground coal mine hidden fire source detection system based on multiple modes and multiple nodes |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20141212 |
|
| EXPY | Termination of patent right or utility model |