CN102944580B - Colliery self diagnosis methane transducer and self-diagnosing method - Google Patents
Colliery self diagnosis methane transducer and self-diagnosing method Download PDFInfo
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Abstract
The present invention relates to colliery self diagnosis methane transducer and self-diagnosing method, comprise: intrinsic safety electric source electrical connection cell conversion module electrical connection central processing unit in intrinsic safety shell, intrinsic safety electric source is order electric connection of power supply modular converter also, CH_4 detection circuit, central processing unit, power transfer module is also electrically connected output port multiplex circuit, cell conversion module electric connection of power supply modular converter, central processing unit also distinguishes infrared connection Infrared remote controller, electrical connection display module, feature is central processing unit electrical connection control RS485 communication module, frequency output terminal, the output port multiplex circuit of current output terminal, provide the self-diagnosing method of colliery self diagnosis methane transducer simultaneously.Present invention achieves and export the integration of multimode communication mode, achieve infrared remote control simultaneously, to the self diagnosis of the open circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal malfunction, to self diagnosis and the information transmission of methane element.
Description
Technical field
The invention belongs to colliery sensor technical field, relate to methane sensor for coal mine, particularly relate to methane transducer and the self-diagnosing method of colliery self diagnosis.
Background technology
At present, China's coal-mine safety monitoring system obtains tremendous development, but also there are some urgent problems, particularly in the information acquisition and transmission technology of Coal Mine Safety Monitoring System, restrict by factors such as wrong report, monitoring blind area, acquisition method falls behind, the sensor adjustment cycle is short, intelligence degree is not high, maintenance workload is large, personnel's maloperations, had a strong impact on the reliability of coal mine safety monitoring system.Particularly existing methane sensor for coal mine is without substantive fault self-diagnosis function, especially without component wear degree, the whether normal self-diagnostic function of power work situation; Only have cabled digital information transfer capability or frequency type signal transfer functions, have signal wire fault to cause monitoring the technical matters etc. interrupting producing wrong report.Central processing unit directly connects RS485 communication module or frequency output terminal or current output terminal, and the standard that current different mine adopts does not coexist when selecting can cause situations such as not mating, the self-diagnostic function imperfection of methane transducer.
Summary of the invention
For the technical matters existing for existing methane sensor for coal mine, increase self-diagnostic function.There is provided a kind of can voluntarily diagnostic element damage and whether power supply normally works, the open circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, the communication signal whether methane sensor for coal mine of the self diagnosis of fault and self-diagnosing method.
The present invention want the technical scheme of technical solution problem to be: a kind of colliery self diagnosis methane transducer is provided, comprise: after in intrinsic safety shell, intrinsic safety electric source 101 is electrically connected cell conversion module 102, electrical connection central processing unit 105, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, CH_4 detection circuit 104, central processing unit 105, power transfer module 103 is also electrically connected output port multiplex circuit 111, cell conversion module 102 electric connection of power supply modular converter 103, central processing unit 105 also distinguishes infrared connection Infrared remote controller 110, electrical connection display module 109, central processing unit 105 is electrically connected control RS485 communication module 106, frequency output terminal 107, the output port multiplex circuit 111 of current output terminal 108.
Wherein: wireless module 112 is electrically connected with central processing unit 105.
Wherein: output port multiplex circuit 111 comprises 1 pin of gating switch U2, connect current output terminal 108 circuit, 2 pin ground connection, 3 pins connect frequency output terminal 107 circuit, 5 pins connect+5V voltage end, 6 pin PORT_CTRL1 connect the I/O mouth of central processing unit 105, 4 pins of gating switch U2 connect 3 pins of gating switch U3, 1 pin of U3 is connected with 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, 5 pins connect+5V voltage end, 1 pin of gating switch U5 meets 485_B, 2, 3 pin ground connection, 5 pins connect+5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of resistance R9 with U3 are connected, by 4 pins of transient voltage twin zener dioder D4 and U5, resistance R15 is connected, resistance R15 with R9 is connected by transient voltage twin zener dioder D5, C6, difference connecting resistance R9 and R15 after C7 series connection, C6, the neutral earthing of C7 two capacitances in series, C6, two termination signal output port J2 after C7 two capacitances in series.
The self-diagnosing method of a kind of colliery self diagnosis methane transducer is provided, feature is: to the diagnosis of fault, first signal output type is judged, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for current mode exports; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for frequency type exports; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 is high (H) voltage, when PORT_CTRL3 is high (H) voltage, is that RS485 bus-type exports; When signal output type is current mode output, current mode open circuit LED light is bright is open circuit, and it is without open circuit that current mode open circuit LED light is extinguished, and be short circuit when current mode short circuit LED light is bright, the extinguishing of current mode short circuit LED light is without short circuit; When signal output type is frequency type output, frequency type open circuit LED light is bright is open circuit, and it is without open circuit that frequency type open circuit LED light is extinguished, and be short circuit when frequency type short circuit LED light is bright, the extinguishing of frequency type short circuit LED light is without short circuit; When signal output type is the output of RS485 bus-type, RS485 communication failure LED light lights communication failure, and RS485 communication failure LED light extinguishes communication normally.
Wherein: the self-diagnosing method of methane element is for being on trouble-free basis in above circuit judges, when Infrared remote controller is calibrated or adjusts the original state of methane sensor for coal mine, cannot calibrate and maybe cannot adjust, think methane component wear, otherwise methane element is without damage.
The invention has the beneficial effects as follows: the invention provides output port multiplex circuit 111, achieve current mode, frequency type, RS485 bus-type exports the integration of multimode communication mode, meet the demand of current coal mine safety monitoring system different systems, signal transmission can wired or wirelessly export, achieve infrared remote control simultaneously, by the software programming of self-diagnosing method to central processing unit, achieve the present invention to current mode, frequency type, the open circuit of RS485 bus-type output circuit, short circuit, the self diagnosis of communication signal malfunction, achieve the self diagnosis to methane element and information transmission simultaneously.
Accompanying drawing explanation
Fig. 1. first embodiment of the invention structure principle chart;
Fig. 2. power transfer module schematic diagram of the present invention;
Fig. 3. CH_4 detection circuit theory diagrams of the present invention;
Fig. 4. RS485 communication module schematic diagram of the present invention;
Fig. 5. output port multiplex circuit schematic diagram of the present invention;
Fig. 6. display module schematic diagram of the present invention;
Fig. 7. cell conversion module schematic diagram of the present invention;
Fig. 8. second embodiment of the invention structure principle chart;
Fig. 9. wireless module schematic diagram of the present invention.
Embodiment
Accompanying drawing number
In figure, 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 is the number of pins of components and parts, 101. intrinsic safety electric sources, 102. cell conversion module, 103. power transfer module, 104. CH_4 detection circuit, 105. central processing units, 106. RS485 communication modules, 107. frequency output terminal, 108. current output terminals, 109. display modules, 110. Infrared remote controller, 111. output port multiplex circuits, 112. wireless modules.
first embodiment
Composition graphs 1. first embodiment of the invention structure principle chart, a kind of colliery self diagnosis methane transducer, comprise: after in intrinsic safety shell, intrinsic safety electric source 101 is electrically connected cell conversion module 102, electrical connection central processing unit 105, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, CH_4 detection circuit 104, central processing unit 105, power transfer module 103 is also electrically connected output port multiplex circuit 111, cell conversion module 102 electric connection of power supply modular converter 103, central processing unit 105 also distinguishes infrared connection Infrared remote controller 110, electrical connection display module 109, central processing unit 105 is electrically connected control RS485 communication module 106, frequency output terminal 107, the output port multiplex circuit 111 of current output terminal 108.
Wherein: STM32F103V8T6 model selected by central processing unit 105.
Composition graphs 2. power transfer module schematic diagram of the present invention, wherein: power transfer module is general module, J1 connects intrinsic safety electric source input port, + 10V connects cell conversion module input port, DC+ 9 ~ 24V power supply one tunnel is through DC/DC transducer, be transformed into+5V to be accessed by+5V power transfer module output port for CH_4 detection circuit 104 and output port multiplex circuit 111, another road, through DC/DC transducer, is transformed into+3.3V and is accessed by+3V3 power transfer module output port for central processing unit 105.
Composition graphs 3. CH_4 detection circuit theory diagrams of the present invention, wherein: CH_4 detection circuit is universal circuit, main is a kind of carrier catalyst element very sensitive to methane gas black element U12A (HEI), white element U13A (BAI) is compensating element, to methane Fails To Respond, also other universal circuit can be adopted.
Composition graphs 4. RS485 communication module of the present invention schematic diagram, wherein: RS485 communication module is general module, U4 is low-power consumption RS485 transceiver, selects MAX3485 model, completes the transmission of information.
Composition graphs 5. output port multiplex circuit of the present invention schematic diagram, wherein: output port multiplex circuit 111 comprises 1 pin of gating switch U2, connect current output terminal 108 circuit, 2 pin ground connection, 3 pins connect frequency output terminal 107 circuit, 5 pins connect+5V voltage end, 6 pin PORT_CTRL1 connect the I/O mouth of central processing unit 105, 4 pins of gating switch U2 connect 3 pins of gating switch U3, 1 pin of U3 is connected with 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, 5 pins connect+5V voltage end, 1 pin of gating switch U5 meets 485_B, 2, 3 pin ground connection, 5 pins connect+5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of resistance R9 with U3 are connected, by 4 pins of transient voltage twin zener dioder D4 and U5, resistance R15 is connected, resistance R15 with R9 is connected by transient voltage twin zener dioder D5, C6, difference connecting resistance R9 and R15 after C7 series connection, C6, the neutral earthing of C7 two capacitances in series, C6, two termination signal output port J2 after C7 two capacitances in series.
Composition graphs 6. display module schematic diagram of the present invention, wherein: display module is general module, adopts general high brightness eight segment numeral pipe, display numerical value.
Composition graphs 7. cell conversion module schematic diagram of the present invention, wherein: cell conversion module is general module.
second embodiment
Composition graphs 8. second embodiment of the invention structure principle chart, a kind of colliery self diagnosis methane transducer, comprise: after in intrinsic safety shell, intrinsic safety electric source 101 is electrically connected cell conversion module 102, electrical connection central processing unit 105, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, CH_4 detection circuit 104, central processing unit 105, power transfer module 103 is also electrically connected output port multiplex circuit 111, cell conversion module 102 electric connection of power supply modular converter 103, central processing unit 105 also distinguishes infrared connection Infrared remote controller 110, electrical connection display module 109, central processing unit 105 is electrically connected control RS485 communication module 106, frequency output terminal 107, the output port multiplex circuit 111 of current output terminal 108, central processor CPU 105 is also electrically connected wireless module 112.
Wherein: STM32F103V8T6 model selected by central processing unit 105.
Composition graphs 2. power transfer module schematic diagram of the present invention, wherein: power transfer module is general module, J1 connects intrinsic safety electric source input port, + 10V connects cell conversion module input port, DC+ 9 ~ 24V power supply one tunnel is through DC/DC transducer, be transformed into+5V to be accessed by+5V power transfer module output port for CH_4 detection circuit 104 and output port multiplex circuit 111, another road, through DC/DC transducer, is transformed into+3.3V and is accessed by+3V3 power transfer module output port for central processing unit 105.
Composition graphs 3. CH_4 detection circuit theory diagrams of the present invention, wherein: CH_4 detection circuit is universal circuit, main is a kind of carrier catalyst element very sensitive to methane gas black element U12A (HEI), white element U13A (BAI) is compensating element, to methane Fails To Respond.Also other universal circuit can be adopted.
Composition graphs 4. RS485 communication module of the present invention schematic diagram, wherein: RS485 communication module is general module, U4 is low-power consumption RS485 transceiver, selects MAX3485 model, completes the transmission of information.
Composition graphs 5. output port multiplex circuit of the present invention schematic diagram, wherein: output port multiplex circuit 111 comprises 1 pin of gating switch U2, connect current output terminal 108 circuit, 2 pin ground connection, 3 pins connect frequency output terminal 107 circuit, 5 pins connect+5V voltage end, 6 pin PORT_CTRL1 connect the I/O mouth of central processing unit 105, 4 pins of gating switch U2 connect 3 pins of gating switch U3, 1 pin of U3 is connected with 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, 5 pins connect+5V voltage end, 1 pin of gating switch U5 meets 485_B, 2, 3 pin ground connection, 5 pins connect+5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of resistance R9 with U3 are connected, by 4 pins of transient voltage twin zener dioder D4 and U5, resistance R15 is connected, resistance R15 with R9 is connected by transient voltage twin zener dioder D5, C6, difference connecting resistance R9 and R15 after C7 series connection, C6, the neutral earthing of C7 two capacitances in series, C6, two termination signal output port J2 after C7 two capacitances in series.
Composition graphs 6. display module schematic diagram of the present invention, wherein: display module is general module, adopts general high brightness eight segment numeral pipe, display numerical value.
Composition graphs 7. cell conversion module schematic diagram of the present invention, wherein: cell conversion module is general module.
Composition graphs 9. wireless module schematic diagram of the present invention, wherein: wireless module is general module, the chip that Wireless Data Transmission adopts is the NRF24L01 type that Nordic Semiconductor company produces, and uses 2.4GHz global open ISM band.
Principle of work of the present invention is introduced: according to the signal output type of the coal mine safety monitoring system that mine uses at present for ease of understanding, determine to use current mode output or frequency type to export or the output of RS485 bus-type, adopt Infrared remote controller setting signal output type, corresponding to after output terminal access, Infrared remote controller is calibrated and is adjusted original state of the present invention, when wire signal is normal, uses wired output signal type, when wire signal interrupts, self-starting wireless signal output form.To the introduction see the self-diagnosing method of following a kind of colliery self diagnosis methane transducer of the self-diagnosing method of the open circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal malfunction.
3rd embodiment
The self-diagnosing method of a kind of colliery self diagnosis methane transducer is: to the diagnosis of fault, first judge signal output type, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for current mode exports; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for frequency type exports; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 is high (H) voltage, when PORT_CTRL3 is high (H) voltage, is that RS485 bus-type exports; When signal output type is current mode output, current mode open circuit LED light is bright is open circuit, and it is without open circuit that current mode open circuit LED light is extinguished, and be short circuit when current mode short circuit LED light is bright, the extinguishing of current mode short circuit LED light is without short circuit; When signal output type is frequency type output, frequency type open circuit LED light is bright is open circuit, and it is without open circuit that frequency type open circuit LED light is extinguished, and be short circuit when frequency type short circuit LED light is bright, the extinguishing of frequency type short circuit LED light is without short circuit; When signal output type is the output of RS485 bus-type, RS485 communication failure LED light lights communication failure, and RS485 communication failure LED light extinguishes communication normally.
Wherein: the self-diagnosing method of methane element is for being on trouble-free basis in above circuit judges, when Infrared remote controller is calibrated or adjusts the original state of methane sensor for coal mine, cannot calibrate and maybe cannot adjust, think methane component wear, otherwise methane element is without damage.
Thus achieve the open circuit to the present invention self, whether short circuit, communication diagnose normally, self diagnosis is carried out to methane component wear simultaneously, and diagnostic message is transmitted.
Claims (5)
1. a colliery self diagnosis methane transducer, after comprising in intrinsic safety shell intrinsic safety electric source (101) electrical connection cell conversion module (102), electrical connection central processing unit (105), intrinsic safety electric source (101) is order electric connection of power supply modular converter (103) also, CH_4 detection circuit (104), central processing unit (105), power transfer module (103) is also electrically connected output port multiplex circuit (111), cell conversion module (102) electric connection of power supply modular converter (103), central processing unit (105) also distinguishes infrared connection Infrared remote controller (110), electrical connection display module (109), central processing unit (105) electrical connection control RS485 communication module (106), frequency output terminal (107), the output port multiplex circuit (111) of current output terminal (108), it is characterized in that: gating switch U2, U3, the model of U5 is TS5A3159DCK, output port multiplex circuit (111) comprises 1 pin of gating switch U2, connect current output terminal (108) circuit, 2 pin ground connection, 3 pins connect frequency output terminal (107) circuit, 5 pins connect+5V voltage end, 6 pin PORT_CTRL1 connect the I/O mouth of central processing unit (105), 4 pins of gating switch U2 connect 3 pins of gating switch U3, 1 pin of U3 is connected with 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit (105), 5 pins connect+5V voltage end, 1 pin of gating switch U5 meets 485_B, 2, 3 pin ground connection, 5 pins connect+5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit (105), after 4 pins of resistance R9 with U3 are connected, by 4 pins of transient voltage suppressor D4 and U5, resistance R15 is connected, resistance R15 with R9 is connected by transient voltage suppressor D5, C6, difference connecting resistance R9 and R15 after C7 series connection, C6, the neutral earthing of C7 two capacitances in series, C6, two termination signal output port J2 after C7 two capacitances in series.
2. a kind of colliery according to claim 1 self diagnosis methane transducer, is characterized in that: wireless module (112) is electrically connected with central processing unit (105).
3. the self-diagnosing method of a methane transducer as claimed in claim 1, it is characterized in that: to the diagnosis of fault, first signal output type is judged, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for current mode exports; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for frequency type exports; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 is high (H) voltage, when PORT_CTRL3 is high (H) voltage, is that RS485 bus-type exports; When signal output type is current mode output, current mode open circuit LED light is bright is open circuit, and it is without open circuit that current mode open circuit LED light is extinguished, and be short circuit when current mode short circuit LED light is bright, the extinguishing of current mode short circuit LED light is without short circuit; When signal output type is frequency type output, frequency type open circuit LED light is bright is open circuit, and it is without open circuit that frequency type open circuit LED light is extinguished, and be short circuit when frequency type short circuit LED light is bright, the extinguishing of frequency type short circuit LED light is without short circuit; When signal output type is the output of RS485 bus-type, RS485 communication failure LED light lights communication failure, and RS485 communication failure LED light extinguishes communication normally.
4. the self-diagnosing method of a methane transducer as claimed in claim 2, it is characterized in that: to the diagnosis of fault, first signal output type is judged, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for current mode exports; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for frequency type exports; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 is high (H) voltage, when PORT_CTRL3 is high (H) voltage, is that RS485 bus-type exports; When signal output type is current mode output, current mode open circuit LED light is bright is open circuit, and it is without open circuit that current mode open circuit LED light is extinguished, and be short circuit when current mode short circuit LED light is bright, the extinguishing of current mode short circuit LED light is without short circuit; When signal output type is frequency type output, frequency type open circuit LED light is bright is open circuit, and it is without open circuit that frequency type open circuit LED light is extinguished, and be short circuit when frequency type short circuit LED light is bright, the extinguishing of frequency type short circuit LED light is without short circuit; When signal output type is the output of RS485 bus-type, RS485 communication failure LED light lights communication failure, and RS485 communication failure LED light extinguishes communication normally.
5. the self-diagnosing method of a kind of colliery self diagnosis methane transducer according to claim 3 or 4, be characterised in that: be on trouble-free basis in above circuit judges, when Infrared remote controller is calibrated or adjusts the original state of methane sensor for coal mine, cannot calibrate and maybe cannot adjust, think methane component wear, otherwise methane element is without damage.
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| CN107100674B (en) * | 2017-04-17 | 2019-01-08 | 天地（常州）自动化股份有限公司 | The recognition methods of pseudo- data is tested in calibration in mining gas sensor monitoring data |
| CN108426937B (en) * | 2018-03-29 | 2020-06-23 | 广东美的制冷设备有限公司 | Formaldehyde sensor module, self-diagnosis method and computer-readable storage medium |
| CN110595533A (en) * | 2019-08-09 | 2019-12-20 | 重庆梅安森科技股份有限公司 | Mining wireless multi-parameter sensor |
| CN113567620A (en) * | 2021-07-13 | 2021-10-29 | 重庆亿森动力环境科技有限公司 | Outdoor miniature air monitoring device |
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| CN201284663Y (en) * | 2008-08-14 | 2009-08-05 | 南昌煤矿仪器设备厂 | Multi-standard output type high-low concentration methane sensor |
| CN202351153U (en) * | 2011-10-26 | 2012-07-25 | 武汉需要智能技术有限公司 | Multi-interface gas detection sensor |
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| JP4800908B2 (en) * | 2006-03-20 | 2011-10-26 | 矢崎総業株式会社 | Gas alarm with built-in electrochemical gas sensor |
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| CN201284663Y (en) * | 2008-08-14 | 2009-08-05 | 南昌煤矿仪器设备厂 | Multi-standard output type high-low concentration methane sensor |
| CN202351153U (en) * | 2011-10-26 | 2012-07-25 | 武汉需要智能技术有限公司 | Multi-interface gas detection sensor |
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