CN102944580A - Mine self-diagnosis methane sensor and self-diagnosis method - Google Patents
Mine self-diagnosis methane sensor and self-diagnosis method Download PDFInfo
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- CN102944580A CN102944580A CN2012104911230A CN201210491123A CN102944580A CN 102944580 A CN102944580 A CN 102944580A CN 2012104911230 A CN2012104911230 A CN 2012104911230A CN 201210491123 A CN201210491123 A CN 201210491123A CN 102944580 A CN102944580 A CN 102944580A
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Abstract
The invention relates to a mine self-diagnosis methane sensor and a self-diagnosis method. The mine self-diagnosis methane sensor comprises that an intrinsic safety power supply arranged in an intrinsic safety shell is in electric connection with a battery conversion module which is in electric connection with a central processing unit, and the intrinsic safety power supply is further sequentially in electric connection with a power supply conversion module, a methane detecting circuit and the central processing unit. The power supply conversion module is further in electric connection with an output port multiplex circuit, the battery conversion module is in electric connection with the power supply conversion module, and the central processing unit is further in infrared connection with an infrared remote controller and in electric connection with a display module respectively. The mine self-diagnosis methane sensor is characterized in that the central processing unit is in electric connection with and controls an RS485 communication module, a frequency output end and the output port multiplex circuit of an electric current output end, and simultaneously a self-diagnosis method of the mine self-diagnosis methane sensor is provided. The mine self-diagnosis methane sensor and the self-diagnosis method achieves integration of output multi-system communication methods, simultaneously achieves infrared remote control, achieves self-diagnosis of open circuit, short circuit and communication signal faults of current mode, frequency mode, and RS485 bus mode output circuits, and achieves self-diagnosis and information transmission of methane elements.
Description
Technical field
The invention belongs to the colliery sensor technical field, relate to methane sensor for coal mine, relate in particular to methane transducer and self-diagnosing method that self diagnosis is used in the colliery.
Background technology
At present, the China's coal-mine safety monitoring system has been obtained tremendous development, but also there are some urgent problems, particularly in the information acquisition and transmission technology of Coal Mine Safety Monitoring System, restricted by the factors such as wrong report, monitoring blind area, acquisition method fall behind, the sensor adjustment cycle is short, intelligent degree is not high, maintenance workload is large, personnel's maloperation, 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, power work situation normal self-diagnostic function whether; Only have cabled digital information transfer capability or frequency type signal transfer functions, have the signal wire fault to cause monitoring to interrupt the technical matters that produces wrong report etc.Central processing unit directly connects RS485 communication module or frequency output terminal or current output terminal, and the standard that adopt in present different mines does not coexist can cause when selecting and the situation such as do not mate, the self-diagnostic function imperfection of methane transducer.
Summary of the invention
For the existing technical matters of existing methane sensor for coal mine, increase self-diagnostic function.Provide a kind of voluntarily diagnostic element to damage and whether power supply works, the opening circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal whether methane sensor for coal mine and the self-diagnosing method of the self diagnosis of fault.
The present invention wants the technical scheme of technical solution problem to be: a kind of colliery self diagnosis methane transducer is provided, comprise: intrinsic safety electric source 101 is electrically connected battery modular converter 102 and is electrically connected central processing unit 105 in the intrinsic safety shell, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, methane testing circuit 104, central processing unit 105, power transfer module 103 also is electrically connected output port multiplex circuit 111, battery modular converter 102 electric connection of power supply modular converters 103, central processing unit 105 is also distinguished infrared connection Infrared remote controller 110, be electrically connected display module 109, characteristics are that 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 that 1 pin of gating switch U2 connects current output terminal 108 circuit, 2 pin ground connection, 3 pins connect frequency output terminal 107 circuit, 5 pins connect+the 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 458_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105,5 pins connect+the 5V voltage end, and 1 pin of U5 meets 458_B, 2,3 pin ground connection, 5 pins connect+the 5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of R9 and U3 are connected, by 4 pins of D4 and U5, R15 is connected, R15 is connected by D5 with R9, C6, meet respectively R9 and R15, C6 after the C7 series connection, 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 with the self diagnosis methane transducer is provided, characteristics are: to the diagnosis of fault, at first judge the signal output type, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, be current mode output; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, is frequency type output; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 be high (H) voltage, when PORT_CTRL3 be height (H) voltage, is that the RS485 bus-type is exported; When the signal output type is current mode when output, the current mode LED light that opens circuit is bright for opening circuit, and the current mode LED light that opens circuit is extinguished as without opening circuit, and is short circuit when current mode short circuit LED light is bright, and current mode short circuit LED light is extinguished as without short circuit; When the signal output type is frequency type when output, the frequency type LED light that opens circuit is bright for opening circuit, and the frequency type LED light that opens circuit is extinguished as without opening circuit, and is short circuit when frequency type short circuit LED light is bright, and frequency type short circuit LED light is extinguished as without short circuit; When the signal output type was the output of RS485 bus-type, RS485 communication failure LED light was lighted communication failure, and RS485 communication failure LED light is extinguished communication normally.
Wherein: the self-diagnosing method of methane element is for being on the trouble-free basis in above circuit judges, Infrared remote controller calibration or when adjusting the original state of methane sensor for coal mine, can't calibrate maybe and can't adjust, think the methane component wear, otherwise the methane element is without damage.
The invention has the beneficial effects as follows: the invention provides output port multiplex circuit 111, realized current mode, frequency type, RS485 bus-type output multimode communication mode is integrated, satisfy the demand of present coal mine safety monitoring system different systems, signal transmission can wired or wirelessly be exported, realized simultaneously infrared remote control, by the software programming of self-diagnosing method to central processing unit, realized that the present invention is to current mode, frequency type, opening circuit of RS485 bus-type output circuit, short circuit, the self diagnosis of communication signal malfunction has been realized self diagnosis and communication to the methane element simultaneously.
Description of drawings
Fig. 1. the first embodiment of the invention structure principle chart;
Fig. 2. power transfer module schematic diagram of the present invention;
Fig. 3. methane testing circuit schematic diagram 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. battery modular converter schematic diagram of the present invention;
Fig. 8. the second embodiment of the invention structure principle chart;
Fig. 9. wireless module schematic diagram of the present invention.
Embodiment
Accompanying drawing number
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 is the number of pins of components and parts among the figure, 101. intrinsic safety electric sources, 102. battery modular converters, 103. power transfer module, 104. the methane testing circuit, 105. central processing units, 106. RS485 communication modules, 107. frequency output terminal, 108. current output terminal, 109. display modules, 110. Infrared remote controller, 111. the output port multiplex circuit, 112. wireless modules.
The first embodiment
In conjunction with Fig. 1. the first embodiment of the invention structure principle chart, a kind of colliery self diagnosis methane transducer, comprise: intrinsic safety electric source 101 is electrically connected battery modular converter 102 rear electrical connection central processing units 105 in the intrinsic safety shell, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, methane testing circuit 104, central processing unit 105, power transfer module 103 also is electrically connected output port multiplex circuit 111, battery modular converter 102 electric connection of power supply modular converters 103, central processing unit 105 is also distinguished infrared connection Infrared remote controller 110, be electrically connected display module 109, characteristics are that 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: central processing unit 105 is selected the STM32F103V8T6 model.
In conjunction with Fig. 2. power transfer module schematic diagram of the present invention, wherein: power transfer module is general module, J1 connects the intrinsic safety electric source input port, + 10V connects battery modular converter input port, DC+ 9～24V power supply one tunnel is through the DC/DC transducer, be transformed into+5V for methane testing circuit 104 and output port multiplex circuit 111 by+5V power transfer module output port access, another road is through the DC/DC transducer, be transformed into+3.3V for central processing unit 105 by+3V3 power transfer module output port access.
In conjunction with Fig. 3. methane testing circuit schematic diagram of the present invention, wherein: the methane testing circuit is universal circuit, a kind of to the very sensitive carrier catalyst element of methane gas at black element U12A (HEI) mainly, white element U13A (BAI) is compensating element,, to the methane Fails To Respond, also can adopt other universal circuit.
In conjunction with Fig. 4. RS485 communication module schematic diagram of the present invention, wherein: the RS485 communication module is general module, U4 is low-power consumption RS485 transceiver, selects the MAX3485 model, finishes the transmission of information.
In conjunction with Fig. 5. output port multiplex circuit schematic diagram of the present invention, wherein: output port multiplex circuit 111 comprises that 1 pin of gating switch U2 connects current output terminal 108 circuit, 2 pin ground connection, 3 pins connect frequency output terminal 107 circuit, 5 pins connect+the 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 458_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, and 5 pins connect+the 5V voltage end, 1 pin of U5 meets 458_B, 2,3 pin ground connection, 5 pins connect+the 5V voltage end, and 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of R9 and U3 are connected, 4 pins by D4 and U5, R15 is connected, and R15 is connected by D5 with R9, C6, meet respectively R9 and R15 after the 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.
In conjunction with Fig. 6. display module schematic diagram of the present invention, wherein: display module is general module, adopts general high brightness eight segment numeral pipes, shows numerical value.
In conjunction with Fig. 7. battery modular converter schematic diagram of the present invention, wherein: the battery modular converter is general module.
The second embodiment
In conjunction with Fig. 8. the second embodiment of the invention structure principle chart, a kind of colliery self diagnosis methane transducer, comprise: intrinsic safety electric source 101 is electrically connected battery modular converter 102 rear electrical connection central processing units 105 in the intrinsic safety shell, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, methane testing circuit 104, central processing unit 105, power transfer module 103 also is electrically connected output port multiplex circuit 111, battery modular converter 102 electric connection of power supply modular converters 103, central processing unit 105 is also distinguished infrared connection Infrared remote controller 110, be electrically connected display module 109, characteristics are that 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 also is electrically connected wireless module 112.
Wherein: central processing unit 105 is selected the STM32F103V8T6 model.
In conjunction with Fig. 2. power transfer module schematic diagram of the present invention, wherein: power transfer module is general module, J1 connects the intrinsic safety electric source input port, + 10V connects battery modular converter input port, DC+ 9～24V power supply one tunnel is through the DC/DC transducer, be transformed into+5V for methane testing circuit 104 and output port multiplex circuit 111 by+5V power transfer module output port access, another road is through the DC/DC transducer, be transformed into+3.3V for central processing unit 105 by+3V3 power transfer module output port access.
In conjunction with Fig. 3. methane testing circuit schematic diagram of the present invention, wherein: the methane testing circuit is universal circuit, be a kind of to the very sensitive carrier catalyst element of methane gas at black element U12A (HEI) mainly, white element U13A (BAI) is compensating element,, to the methane Fails To Respond.Also can adopt other universal circuit.
In conjunction with Fig. 4. RS485 communication module schematic diagram of the present invention, wherein: the RS485 communication module is general module, U4 is low-power consumption RS485 transceiver, selects the MAX3485 model, finishes the transmission of information.
In conjunction with Fig. 5. output port multiplex circuit schematic diagram of the present invention, wherein: output port multiplex circuit 111 comprises that 1 pin of gating switch U2 connects current output terminal 108 circuit, 2 pin ground connection, 3 pins connect frequency output terminal 107 circuit, 5 pins connect+the 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 458_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, and 5 pins connect+the 5V voltage end, 1 pin of U5 meets 458_B, 2,3 pin ground connection, 5 pins connect+the 5V voltage end, and 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of R9 and U3 are connected, 4 pins by D4 and U5, R15 is connected, and R15 is connected by D5 with R9, C6, meet respectively R9 and R15 after the 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.
In conjunction with Fig. 6. display module schematic diagram of the present invention, wherein: display module is general module, adopts general high brightness eight segment numeral pipes, shows numerical value.
In conjunction with Fig. 7. battery modular converter schematic diagram of the present invention, wherein: the battery modular converter is general module.
In conjunction with Fig. 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 the open ISM band in the 2.4GHz whole world.
Introduce principle of work of the present invention for ease of understanding: according to the signal output type of the present coal mine safety monitoring system that uses in mine, determine to use current mode output or frequency type output or the output of RS485 bus-type, adopt Infrared remote controller setting signal output type, corresponding to after the output terminal access, the Infrared remote controller calibration is also 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 self-diagnosing method of the opening circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal malfunction referring to the introduction of following a kind of colliery with the self-diagnosing method of self diagnosis methane transducer.
The 3rd embodiment
A kind of colliery with the self-diagnosing method of self diagnosis methane transducer is: to the diagnosis of fault, at first judge the signal output type, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, be current mode output; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, is frequency type output; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 be high (H) voltage, when PORT_CTRL3 be height (H) voltage, is that the RS485 bus-type is exported; When the signal output type is current mode when output, the current mode LED light that opens circuit is bright for opening circuit, and the current mode LED light that opens circuit is extinguished as without opening circuit, and is short circuit when current mode short circuit LED light is bright, and current mode short circuit LED light is extinguished as without short circuit; When the signal output type is frequency type when output, the frequency type LED light that opens circuit is bright for opening circuit, and the frequency type LED light that opens circuit is extinguished as without opening circuit, and is short circuit when frequency type short circuit LED light is bright, and frequency type short circuit LED light is extinguished as without short circuit; When the signal output type was the output of RS485 bus-type, RS485 communication failure LED light was lighted communication failure, and RS485 communication failure LED light is extinguished communication normally.
Wherein: the self-diagnosing method of methane element is for being on the trouble-free basis in above circuit judges, Infrared remote controller calibration or when adjusting the original state of methane sensor for coal mine, can't calibrate maybe and can't adjust, think the methane component wear, otherwise the methane element is without damage.
Realized thus whether normally the opening circuit of the present invention self, short circuit, communication diagnosis is carried out self diagnosis to the methane component wear simultaneously, and diagnostic message is transmitted.
Claims (6)
1. colliery self diagnosis methane transducer, comprise that intrinsic safety electric source (101) is electrically connected battery modular converter (102) electrical connection central processing unit (105) in the intrinsic safety shell, intrinsic safety electric source (101) is order electric connection of power supply modular converter (103) also, methane testing circuit (104), central processing unit (105), power transfer module (103) also is electrically connected output port multiplex circuit (111), battery modular converter (102) electric connection of power supply modular converter (103), central processing unit (105) is also distinguished infrared connection Infrared remote controller (110), be electrically connected display module (109), it is characterized in that: 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).
2. a kind of colliery according to claim 1 self diagnosis methane transducer, it is characterized in that: wireless module (112) is electrically connected with central processing unit (105).
3. a kind of colliery according to claim 1 self diagnosis methane transducer, it is characterized in that: output port multiplex circuit (111) comprises that 1 pin of gating switch U2 connects current output terminal (108) circuit, 2 pin ground connection, 3 pins connect frequency output terminal (107) circuit, 5 pins connect+the 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 458_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit (105), 5 pins connect+the 5V voltage end, 1 pin of U5 meets 458_B, 2,3 pin ground connection, 5 pins connect+the 5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit (105), after 4 pins of R9 and U3 are connected, 4 pins by D4 and U5, R15 is connected, R15 is connected by D5 with R9, C6, meet respectively R9 and R15 after the 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.
4. a kind of colliery according to claim 2 self diagnosis methane transducer, it is characterized in that: output port multiplex circuit (111) comprises that 1 pin of gating switch U2 connects current output terminal (108) circuit, 2 pin ground connection, 3 pins connect frequency output terminal (107) circuit, 5 pins connect+the 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 458_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit (105), 5 pins connect+the 5V voltage end, 1 pin of U5 meets 458_B, 2,3 pin ground connection, 5 pins connect+the 5V voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit (105), after 4 pins of R9 and U3 are connected, 4 pins by D4 and U5, R15 is connected, R15 is connected by D5 with R9, C6, meet respectively R9 and R15 after the 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.
5. the self-diagnosing method of a colliery usefulness self diagnosis methane transducer is characterised in that: to the diagnosis of fault, at first judge the signal output type, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, is current mode output; When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, is frequency type output; When PORT_CTRL1 is any (X) voltage, PORT_CTRL2 be high (H) voltage, when PORT_CTRL3 be height (H) voltage, is that the RS485 bus-type is exported; When the signal output type is current mode when output, the current mode LED light that opens circuit is bright for opening circuit, and the current mode LED light that opens circuit is extinguished as without opening circuit, and is short circuit when current mode short circuit LED light is bright, and current mode short circuit LED light is extinguished as without short circuit; When the signal output type is frequency type when output, the frequency type LED light that opens circuit is bright for opening circuit, and the frequency type LED light that opens circuit is extinguished as without opening circuit, and is short circuit when frequency type short circuit LED light is bright, and frequency type short circuit LED light is extinguished as without short circuit; When the signal output type was the output of RS485 bus-type, RS485 communication failure LED light was lighted communication failure, and RS485 communication failure LED light is extinguished communication normally.
6. a kind of colliery according to claim 5 is with the self-diagnosing method of self diagnosis methane transducer, be characterised in that: be on the trouble-free basis in above circuit judges, Infrared remote controller calibration or when adjusting the original state of methane sensor for coal mine, can't calibrate maybe and can't adjust, think the methane component wear, otherwise the methane element is without damage.
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| CN107100674A (en) * | 2017-04-17 | 2017-08-29 | 天地（常州）自动化股份有限公司 | The recognition methods of the pseudo- data of calibration experiment in mining gas sensor Monitoring Data |
| CN108426937A (en) * | 2018-03-29 | 2018-08-21 | 广东美的制冷设备有限公司 | Formaldehyde sensor module, self-diagnosing 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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| CN102944580B (en) | 2015-08-12 |
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