CN201284663Y - Multi-standard output type high-low concentration methane sensor - Google Patents
Multi-standard output type high-low concentration methane sensor Download PDFInfo
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- CN201284663Y CN201284663Y CNU2008201133814U CN200820113381U CN201284663Y CN 201284663 Y CN201284663 Y CN 201284663Y CN U2008201133814 U CNU2008201133814 U CN U2008201133814U CN 200820113381 U CN200820113381 U CN 200820113381U CN 201284663 Y CN201284663 Y CN 201284663Y
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Abstract
The utility model relates to a multimode output type high-low concentration methane sensor, which belongs to the technical field of coal mine environment safety monitor instruments and devices. The circuit structure of the methane sensor comprises a microcontroller working circuit, a multi-parameter detection circuit, a multi-signal output circuit, a power supply circuit and a display and alarm circuit. The parameter circuit detection circuit comprises a methane concentration detection circuit and a temperature detection circuit; the signal output circuit comprises a frequency signal output circuit, a current signal output circuit and a digital signal output circuit; the output of digital signals adopts an FSK communication circuit; the power supply circuit not only can be externally connected with an intrinsic safety power supply to supply power but also is provided with a nickel-hydrogen battery group to be as a built-in power supply. The multimode output type high-low concentration methane sensor can be used for coal mine safety monitor to realize multi-parameter detection and multimode output; the instrument not only can be used as a suspended set type methane sensor but also can be used as a portable gas detecting instrument for a gas inspector and a leader inspector.
Description
Technical field
The utility model belongs to coal mine environment safety monitoring instrument apparatus field.
Background technology
Present known methane transducer comprises methane detection element, single-chip microcomputer, signal processing circuit etc.The structure of methane detection element is the methane transducer of conventional catalyst principle, the namely for methane detecting element is a carrier catalyst element, the methane gas that contains in the catalyzer on methane sensing element surface and the tested gas produces exothermic reaction, the corresponding increase of the resistance value of himself realizes that by bridge circuit concentration of methane gas is to the conversion of bridge circuit voltage output in the tested gas.Signal processing circuit mainly is to form the signal of telecommunication by detecting electric bridge, enters single-chip microcomputer through circuit such as amplification, V/F again and handles, and single-chip microcomputer send display circuit to show the methane concentration value that detects on the one hand, and carries out sound and light alarm to surpassing setting value; Give the downhole monitoring sub-station equipment with the methane concentration value that detects by certain corresponding relation output correspondent frequency value or current value on the other hand.Methane transducer is the important corollary equipment of coal mine safety monitoring system.Publication number 2110873 utility models are exactly a kind of known methane transducer, but the methane concentration value decapacitation that known methane transducer detects send display circuit to show, surpass outside the setting value sound and light alarm, can also export correspondent frequency value or current value and give the downhole monitoring sub-station equipment, but can not export the methane concentration digital signal corresponding, and the frequency signal of transmission output is subject to disturb, and transmission range is also not far, generally about 2Km.
Traditional methane transducer is made up of single-chip microcomputer operating circuit, parameter detecting circuit, signal output apparatus, power-supplying circuit, demonstration and warning circuit on circuit structure.Traditional methane transducer is that single methane detects on parameter detecting, signal output also generally has only frequency type or the output of current mode signal, power circuit is only by the power supply of external intrinsic safety electric source, therefore traditional methane transducer exist single on detected parameters and the output standard, transmission range short, shortcoming such as not removable.
The utility model will remedy the deficiency that known technology exists in design.
Summary of the invention
The purpose of this utility model provides that a kind of employing multi-parameter detects, multi-standard output, transmission range are long, strong interference immunity, can detect and show the methane transducer of mine methane high-concentration and low-concentration.
The utility model is to be achieved through the following technical solutions: on the basis of traditional methane transducer, the testing circuit aspect, methane testing circuit and temperature sensing circuit are set in same methane transducer, it can be received and testing environment methane concentration signal and ambient temperature signal simultaneously, and deliver to single-chip microcomputer and carry out the data processing; Aspect signal output apparatus, on the basis of single frequency type or current mode signal output apparatus, collect frequency type, current mode, the many signal output apparatus of numeric type in same sensor, wherein the numeric type output circuit adopts FSK frequency shift keying communicating circuit, the data signal of detected value directly can be sent to surface-monitoring equipment by microcontroller serial port and FSK frequency shift keying communicating circuit, save this intermediate link of downhole monitoring substation; Aspect power circuit, the utility model is provided with the power supply of Ni-MH battery group except that by the outside intrinsic safety electric source power supply in inside.
The utility model is made up of methane sensing element, temperature-sensing element, single-chip microcomputer, Ni-MH battery group, memory, display, alarm, IR remote controller etc., and its circuit structure comprises single-chip microcomputer operating circuit, multi-parameter testing circuit, many signal output apparatus, power-supplying circuit, demonstration and warning circuit.Parameter detecting circuit wherein comprises that methane concentration detects and temperature sensing circuit; Signal output apparatus comprises frequency signal output, current signal output and digital signal output circuit, and digital signal output circuit adopts FSK frequency shift keying communicating circuit, can the data signal of detected value directly be transmitted at a distance; Power-supplying circuit has been set up the Ni-MH battery group and has been made built-in power on the basis in the source of external intrinsic safety electricity, and can pass through power supply switch circuit, selects power configuration to switch as required.
The utility model not only methane transducer with known other pattern is the same, be provided with the output circuit of frequency type or current mode, can give the downhole monitoring sub-station equipment by certain corresponding relation output correspondent frequency value or current value with the methane concentration value that detects, and be the signal output of compatible frequency type of while and current mode and numeric type, the numeric type output circuit of indoor design, it is FSK frequency shift keying communicating circuit, can with the data signal of detected value directly by microcontroller serial port and FSK communicating circuit send to the downhole monitoring sub-station equipment or directly and the transmission line of coal mine safety monitoring system be connected to terrestrial interface, directly carry out data communication with the ground monitoring computer.Saved this intermediate link of downhole monitoring sub-station equipment, accomplished that really underground safety monitoring does not have " blind area " (power supply send less than or bad installation outstation zone).This transmission means has strong interference immunity, and the characteristics that transmission range is long promptly are subject to impulse train and disturb the drawback of emitting big number that causes by making sensor that communications protocol can effectively solve the frequency way of output by oneself; It is far away that the digital data transmission distance can reach 10Km, substantially exceeds the maximum transmission distance of the frequency way of output.
Because the utility model instrument internal is provided GNY8000mAh * 3 Ni-MH battery groups for oneself, externally use external power source under the intrinsic safety electric source normal condition, when external power source breaks down or when cutting off, the Ni-MH battery group is devoted oneself to work automatically, after the standard charging (about 10 hours), but continuous operation is more than 24 hours.Therefore this instrument promptly can be used as the fixation type methane transducer of suspension, and the portable gas explosion detector that also can be used as gas inspector and leader inspection personnel uses.
The utility model inside is provided with methane sensing element and temperature element (TE, not only can detect methane concentration with display environment, also can detect temperature with display environment, when being set to the Digital Transmission formula, can not only export methane and detect numerical value, also exportable temperature detection numerical value is given downhole monitoring sub-station equipment or surface-monitoring equipment.The utility model is in the software design, designed black box function software, when data transmission system (disconnected) fault as communication cable, instrument provides 512 groups of data storages (power down is not lost) automatically, 30 minutes once during less than alarm point when ambient concentration, and when ambient concentration during greater than alarm point, per 1 minute once, opening entry " time-concentration " data.Recover just often when data transmission system, will store the disposable benefit of data automatically and pass to down-hole or surface-monitoring equipment, really accomplish uninterrupted in real time monitoring.
The utility model beneficial effect compared with the prior art is, (1) owing to designed FSK frequency shift keying communicating circuit in the circuit, can with the data signal of detected value directly by microcontroller serial port and FSK frequency shift keying communicating circuit send to the downhole monitoring sub-station equipment or directly and the transmission line of coal mine safety monitoring system be connected to terrestrial interface, directly carry out data communication with the ground monitoring computer.Not only transmission range long (can reach 10km), and strong interference immunity.Circuit is also integrated simultaneously frequency type, current mode and the output of numeric type signal have realized multi-standard output.(2) power circuit has increased the Ni-MH battery group of providing for oneself, when external power source breaks down or be cut off, the Ni-MH battery group is devoted oneself to work automatically, therefore this instrument both can be used as the fixation type methane transducer of suspension, and the portable gas explosion detector that can be used as gas inspector and leader inspection personnel again uses.
Description of drawings
Accompanying drawing is a multi-standard output type high-concentration and low-concentration methane transducer block diagram.
The specific embodiment
Accompanying drawing is the enforcement structured flowchart of multi-standard output type high-concentration and low-concentration methane transducer.The testing circuit of present embodiment is provided with methane testing circuit and temperature sensing circuit, methane sensing element and methane concentration detecting unit constitute the methane testing circuit, temperature-sensing element and temperature detecting unit constitute temperature sensing circuit, and the signal of detection send single-chip microcomputer to carry out data and handles.
Aspect signal output apparatus, be provided with frequency signal, current signal and digital signal output circuit simultaneously, digital signal output circuit adopts FSK frequency shift keying communicating circuit.When methane sensing element (catalysis element) detects methane, the methane gas that contains in the catalyzer on methane sensing element surface and the tested gas reacts, detect through concentration, signal is sent to single-chip microcomputer and carries out the data processing, the frequency signal of detected value and current signal are given the downhole monitoring sub-station equipment, the data signal of detected value directly by microcontroller serial port and FSK communicating circuit send to the downhole monitoring sub-station equipment or directly and the transmission line of coal mine safety monitoring system be connected to terrestrial interface, directly carry out data communication with the ground monitoring computer.Meanwhile, temperature pick up is delivered to single-chip microcomputer with the ambient temperature signal that temperature detection obtains, and becomes data signal after being handled by single-chip microcomputer and externally transmits.
The display part of present embodiment is 4 LED charactron displays; Sound and light alarm comprises alarm lamp and buzzer, and the selection of present embodiment output signal standard is carried out remote control acceptance by IR remote controller, and remote signal is delivered to single-chip microcomputer.
The black box function of present embodiment is by scm software and E
2The PROME memory is finished jointly, when data transmission system (disconnected) fault as communication cable, instrument provides 512 groups of data storages (power down is not lost) automatically, 30 minutes once during less than alarm point when ambient concentration, and when ambient concentration during greater than alarm point, per 1 minute once, opening entry " time-concentration " data.Recover just often when data transmission system, will store the disposable benefit of data automatically and pass to down-hole or surface-monitoring equipment.
The external intrinsic safety electric source of present embodiment, externally use external power source under the intrinsic safety electric source normal condition, when external power source broke down or be cut off, the Ni-MH battery group that is provided with in the present embodiment was devoted oneself to work automatically, after the standard charging (about 10 hours), but continuous operation is more than 24 hours.
Claims (3)
1, a kind of multi-standard output type high-concentration and low-concentration methane transducer, its circuit structure comprises single-chip microcomputer operating circuit, multi-parameter testing circuit, many signal output apparatus, power-supplying circuit, demonstration and warning circuit, it is characterized in that, the existing methane concentration testing circuit of parameter detecting circuit of described multi-standard output type high-concentration and low-concentration methane transducer has temperature sensing circuit again; Signal output apparatus comprises frequency signal output circuit, current signal output circuit and digital signal output circuit; Power-supplying circuit can be powered by external intrinsic safety electric source, is provided with the Ni-MH battery group again and makes built-in power.
2, multi-standard output type high-concentration and low-concentration methane transducer according to claim 1 is characterized in that, described digital signal output circuit adopts FSK frequency shift keying communicating circuit.
3, multi-standard output type high-concentration and low-concentration methane transducer according to claim 1 is characterized in that, but the Ni-MH battery group of continuous operation more than 24 hours after standard charging of the employing of the built-in power in the described power-supplying circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201133814U CN201284663Y (en) | 2008-08-14 | 2008-08-14 | Multi-standard output type high-low concentration methane sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201133814U CN201284663Y (en) | 2008-08-14 | 2008-08-14 | Multi-standard output type high-low concentration methane sensor |
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| Publication Number | Publication Date |
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| CN201284663Y true CN201284663Y (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008201133814U Expired - Fee Related CN201284663Y (en) | 2008-08-14 | 2008-08-14 | Multi-standard output type high-low concentration methane sensor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608981A (en) * | 2012-03-28 | 2012-07-25 | 大连安能科技有限公司 | Environmental safety monitoring system |
| CN102944580A (en) * | 2012-11-27 | 2013-02-27 | 煤炭科学研究总院沈阳研究院 | Mine self-diagnosis methane sensor and self-diagnosis method |
| CN102967690A (en) * | 2012-11-27 | 2013-03-13 | 煤炭科学研究总院沈阳研究院 | Self-diagnosis carbon monoxide sensor for coal mine and self-diagnosis method |
| CN103643990A (en) * | 2013-12-20 | 2014-03-19 | 煤炭科学研究总院 | Air treatment system of underground coal mine |
| CN105401980A (en) * | 2015-12-29 | 2016-03-16 | 常熟市亨达电子器材厂 | Portable methane detection alarm |
| CN106558165A (en) * | 2015-09-29 | 2017-04-05 | 哈尔滨东方报警设备开发有限公司 | A kind of terrestrial reference alarm with infrared control function |
| CN109459403A (en) * | 2018-12-12 | 2019-03-12 | 镇江中煤电子有限公司 | The more gas-detecting devices of underground coal mine and detection method |
-
2008
- 2008-08-14 CN CNU2008201133814U patent/CN201284663Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102608981A (en) * | 2012-03-28 | 2012-07-25 | 大连安能科技有限公司 | Environmental safety monitoring system |
| CN102944580A (en) * | 2012-11-27 | 2013-02-27 | 煤炭科学研究总院沈阳研究院 | Mine self-diagnosis methane sensor and self-diagnosis method |
| CN102967690A (en) * | 2012-11-27 | 2013-03-13 | 煤炭科学研究总院沈阳研究院 | Self-diagnosis carbon monoxide sensor for coal mine and self-diagnosis method |
| CN102944580B (en) * | 2012-11-27 | 2015-08-12 | 煤炭科学研究总院沈阳研究院 | Colliery self diagnosis methane transducer and self-diagnosing method |
| CN102967690B (en) * | 2012-11-27 | 2015-10-14 | 煤炭科学研究总院沈阳研究院 | Colliery self diagnosis carbon monoxide transducer and self-diagnosing method |
| CN103643990A (en) * | 2013-12-20 | 2014-03-19 | 煤炭科学研究总院 | Air treatment system of underground coal mine |
| CN103643990B (en) * | 2013-12-20 | 2016-07-06 | 煤炭科学技术研究院有限公司 | A kind of air treatment system of underground coal mine |
| CN106558165A (en) * | 2015-09-29 | 2017-04-05 | 哈尔滨东方报警设备开发有限公司 | A kind of terrestrial reference alarm with infrared control function |
| CN105401980A (en) * | 2015-12-29 | 2016-03-16 | 常熟市亨达电子器材厂 | Portable methane detection alarm |
| CN109459403A (en) * | 2018-12-12 | 2019-03-12 | 镇江中煤电子有限公司 | The more gas-detecting devices of underground coal mine and detection method |
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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: 20090805 Termination date: 20130814 |