CN203606341U - Self-diagnosis ethylene sensor for coal mine - Google Patents
Self-diagnosis ethylene sensor for coal mine Download PDFInfo
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- CN203606341U CN203606341U CN201320737418.1U CN201320737418U CN203606341U CN 203606341 U CN203606341 U CN 203606341U CN 201320737418 U CN201320737418 U CN 201320737418U CN 203606341 U CN203606341 U CN 203606341U
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- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 239000005977 Ethylene Substances 0.000 title claims abstract description 24
- 238000004092 self-diagnosis Methods 0.000 title claims abstract description 22
- 239000003245 coal Substances 0.000 title abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 25
- 239000003990 capacitor Substances 0.000 claims description 60
- 238000012545 processing Methods 0.000 claims description 39
- 238000012546 transfer Methods 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 13
- 230000005669 field effect Effects 0.000 claims description 8
- 230000007935 neutral effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 9
- 238000012544 monitoring process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Abstract
The utility model relates to a self-diagnosis ethylene sensor for a coal mine. The self-diagnosis ethylene sensor is characterized in that an intrinsic safety power source inside an intrinsic safety shell is electrically connected with a battery conversion module and a central processor; the intrinsic safety power source is further electrically connected with a power source conversion module, an ethylene detection circuit and the central processor in sequence; the power source conversion module is further electrically connected with an output port multiplexing circuit; the battery conversion module is electrically connected with the power source conversion module; the central processor is further connected with an infrared remote controller in an infrared manner, and is electrically connected with a display module; the central processor is electrically connected with the output port multiplexing circuit for controlling an RS485 communication module, a frequency output end and a current output end. The self-diagnosis ethylene sensor is characterized by comprising the ethylene detection circuit. With the adoption of the self-diagnosis ethylene sensor provided by the utility model, current-type, frequency-type and RS485 bus-type output multisystem communication manners are integrated, and the self-diagnosis of open circuit, short circuit and communication signal fault states of current-type, frequency-type and RS485 bus-type output circuits can be realized, so that the anti-interference capacity is improved; the signals are stably output; the zero-point and concentration sensitivity calibration is convenient to realize in both manual and remote control manners.
Description
Technical field
The utility model belongs to colliery sensor technical field, relates to colliery ethylene sensor, relates in particular to the ethylene sensor of colliery self diagnosis.
Background technology
At present, China's coal-mine safety monitoring system has been obtained tremendous development, but also there are some urgent problems, particularly the backwardness in information acquisition and the transmission technology of Coal Mine Safety Monitoring System causes following problem, restricted by the factors such as wrong report, monitoring blind area, acquisition method fall behind, short, intelligent degree of sensor adjustment cycle is not high, maintenance workload large, personnel's maloperation, had a strong impact on the reliability of coal mine safety monitoring system.Particularly existing colliery uses ethylene sensor without substantive fault self-diagnosis function, 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 to interrupt producing the technical matters etc. of wrong report.The standard that current different mine adopts does not coexist can cause while selecting and the situation such as does not mate, the self-diagnostic function imperfection of ethylene sensor.
Utility model content
For the existing technical matters of ethylene sensor for existing colliery, increase self-diagnostic function.Provide one voluntarily diagnostic element damage and power supply whether normally work, whether the opening circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal the colliery ethylene sensor of the self diagnosis of fault, the ethene testing circuit adopting has improved antijamming capability, make signal output steadily by filter design, manually and remote control zero point, concentration sensitivity calibration convenient.
The utility model wants the technical scheme of technical solution problem to be: a kind of colliery self diagnosis ethylene sensor is provided, comprise: intrinsic safety electric source electrical connection battery modular converter electrical connection central processing unit in intrinsic safety shell, intrinsic safety electric source is order electric connection of power supply modular converter also, ethene testing circuit, central processing unit, power transfer module is also electrically connected output port multiplex circuit, battery modular converter electric connection of power supply modular converter, central processing unit is also distinguished infrared connection Infrared remote controller, electrical connection display module, RS485 communication module is controlled in central processing unit electrical connection, frequency output terminal, the output port multiplex circuit of current output terminal, feature is: ethene testing circuit comprises the WK of ethene element, RF, CT end is connected respectively to 1 of the sub-J3 of ethene component terminals, 2, 3 ends, the terminal 2 of the sub-J3 of ethene component terminals is connected to terminal 1 by field effect transistor SST177, the G of field effect transistor SST177 holds by be connected to+5V of resistance R 21, the terminal 3 of the sub-J3 of ethene component terminals is connected to capacitor C 9 by inductance N1, C10, the pin 7 of amplifier U5, the terminal 2 of the sub-J3 of ethene component terminals is by inductance N2, resistance R 22, R23 is connected to amplifier U5 pin 6, amplifier U5 pin 6 connects pin 7 by capacitor C 10, the terminal 3 of the sub-J3 of ethene component terminals is by inductance N1, capacitor C 9, resistance R 22, inductance N2 is connected to the terminal 2 of the sub-J3 of ethene component terminals, the pin 5 of amplifier U5 is connected to 2.5V by resistance R 24, amplifier U5 pin 3 is connected to 2.5V by resistance R 28, the terminal 1 of the sub-J3 of ethene component terminals is by inductance N3, resistance R 25, resistance R 26 connects the pin two of amplifier U5, capacitor C 11, capacitor C 12, resistance R 27 parallel connections, the pin one of one termination amplifier U5, the junction of one terminating resistor R25 and resistance R 26, amplifier U5 pin 8 connects pin 4 by capacitor C 13, connect+5V of pin 8, pin 4 ground connection, amplifier U5 pin one is by resistance R 29, resistance R 30 connects amplifier U6 pin 5, resistance R 29, the junction of resistance R 30 is by capacitor C 14 ground connection, amplifier U6 pin 5 connects amplifier U6 pin 3 by capacitor C 15, amplifier U6 pin 3 meets 2.5V by resistance R 31, amplifier U6 pin two is by resistance R 32, potentiometer W4, resistance R 33 connects amplifier U6 pin 6, resistance R 36 and capacitor C 17 parallel connections, the pin one of one termination amplifier U6, another termination connects amplifier U6 pin two, capacitor C 18 and resistance R 34 parallel connections, one termination connects amplifier U6 pin 7 another termination amplifier U6 pins 6, connect amplifier U6 pin 8 and connect pin 4 by capacitor C 16, meet amplifier U6 pin 8 connect+5V, connect amplifier U6 pin 4 ground connection, amplifier U6 pin one connects amplifier U8 pin 6 by resistance R 37, amplifier U6 pin 7 connects amplifier U8 pin 5 by resistance R 35, capacitor C 20, resistance R 38 parallel connections, one termination amplifier U8 pin 7, another termination amplifier U8 pin 6, amplifier U8 pin 5 is by capacitor C 19 ground connection, amplifier U8 pin 7 is connected to single-chip microcomputer pin voltage signal output part AN1 by resistance R 39, voltage signal output end AN1 is by capacitor C 22 ground connection, 2.5V is by resistance R 41, potentiometer W3 ground connection, resistance R 41 is connected amplifier U7 pin 3 with the junction of potentiometer W3, amplifier U7 pin two connects its pin one, amplifier U7 pin one connects amplifier U8 pin 5 by resistance R 40.
Wherein: wireless module is electrically connected with central processing unit.
Wherein: output port multiplex circuit comprises that 1 pin of gating switch U9 connects current output terminal, 2 pin ground connection, 3 pins connect frequency output terminal, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL1 are connected with the I/O mouth of central processing unit, 4 pins of gating switch U9 connect 3 pins of gating switch U10, 1 pin of gating switch U10 is connected with RS 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, connect+5V of 5 pins voltage end, 1 pin of gating switch U11 meets RS 485_B, 2, 3 pin ground connection, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit, after 4 pins of resistance R 9 and gating switch U10 are connected, by 4 pins of diode D6 and gating switch U11, resistance R 15 is connected, resistance R 15 is connected by diode D18 with R9, capacitor C 40, difference connecting resistance R9 and R15 after C41 series connection, C40, the neutral earthing of C41 two capacitances in series, C40, two termination signal output port J2 after C41 two capacitances in series.
The beneficial effects of the utility model are: the utility model provides output port multiplex circuit, realize current mode, frequency type, RS485 bus-type output multimode communication mode is integrated, meet the demand of current coal mine safety monitoring system different communication standard, can be by wired or wireless output, signal has been realized function of infrared remote control, software programming by self-diagnosing method to central processing unit, realize the utility model to current mode, frequency type, opening circuit of RS485 bus-type output circuit, short circuit, the self diagnosis of communication signal malfunction, self diagnosis and communication to ethene element have been realized simultaneously, the ethene testing circuit adopting has improved antijamming capability, make signal output steadily by filter design, manually and remote control zero point, concentration sensitivity calibration is convenient.
Accompanying drawing explanation
Fig. 1. the utility model the first example structure schematic diagram;
Fig. 2. the utility model power transfer module schematic diagram;
Fig. 3. the utility model ethene testing circuit schematic diagram;
Fig. 4. the utility model RS485 communication module schematic diagram;
Fig. 5. the utility model output port multiplex circuit schematic diagram;
Fig. 6. the utility model display module schematic diagram;
Fig. 7. the utility model battery modular converter schematic diagram;
Fig. 8. the utility model the second example structure schematic diagram;
Fig. 9. the utility model wireless module schematic diagram.
Embodiment
Accompanying drawing number
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 be components and parts number of pins, 101. intrinsic safety electric sources, 102. battery modular converters in figure, 103. power transfer module, 104. ethene testing circuits, 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.
the first embodiment
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, a kind of colliery self diagnosis ethylene sensor, comprise: in intrinsic safety shell, intrinsic safety electric source 101 is electrically connected battery modular converter 102 and is electrically connected central processing unit 105, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, ethene testing circuit 104, central processing unit 105, power transfer module 103 is also 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, electrical connection display module 109, RS485 communication module 106 is controlled in central processing unit 105 electrical connections, frequency output terminal 107, the output port multiplex circuit 111 of current output terminal 108.Central processing unit 105 is selected STM32F103V8T6 model.Feature is: ethene testing circuit comprises the WK of ethene element, RF, CT end is connected respectively to 1 of the sub-J3 of ethene component terminals, 2, 3 ends, the terminal 2 of the sub-J3 of ethene component terminals is connected to terminal 1 by field effect transistor SST177, the G of field effect transistor SST177 holds by be connected to+5V of resistance R 21, the terminal 3 of the sub-J3 of ethene component terminals is connected to capacitor C 9 by inductance N1, C10, the pin 7 of amplifier U5, the terminal 2 of the sub-J3 of ethene component terminals is by inductance N2, resistance R 22, R23 is connected to amplifier U5 pin 6, amplifier U5 pin 6 connects pin 7 by capacitor C 10, the terminal 3 of the sub-J3 of ethene component terminals is by inductance N1, capacitor C 9, resistance R 22, inductance N2 is connected to the terminal 2 of the sub-J3 of ethene component terminals, the pin 5 of amplifier U5 is connected to 2.5V by resistance R 24, amplifier U5 pin 3 is connected to 2.5V by resistance R 28, the terminal 1 of the sub-J3 of ethene component terminals is by inductance N3, resistance R 25, resistance R 26 connects the pin two of amplifier U5, capacitor C 11, capacitor C 12, resistance R 27 parallel connections, the pin one of one termination amplifier U5, the junction of one terminating resistor R25 and resistance R 26, amplifier U5 pin 8 connects pin 4 by capacitor C 13, connect+5V of pin 8, pin 4 ground connection, amplifier U5 pin one is by resistance R 29, resistance R 30 connects amplifier U6 pin 5, resistance R 29, the junction of resistance R 30 is by capacitor C 14 ground connection, amplifier U6 pin 5 connects amplifier U6 pin 3 by capacitor C 15, amplifier U6 pin 3 meets 2.5V by resistance R 31, amplifier U6 pin two is by resistance R 32, potentiometer W4, resistance R 33 connects amplifier U6 pin 6, resistance R 36 and capacitor C 17 parallel connections, the pin one of one termination amplifier U6, another termination connects amplifier U6 pin two, capacitor C 18 and resistance R 34 parallel connections, one termination connects amplifier U6 pin 7 another termination amplifier U6 pins 6, connect amplifier U6 pin 8 and connect pin 4 by capacitor C 16, meet amplifier U6 pin 8 connect+5V, connect amplifier U6 pin 4 ground connection, amplifier U6 pin one connects amplifier U8 pin 6 by resistance R 37, amplifier U6 pin 7 connects amplifier U8 pin 5 by resistance R 35, capacitor C 20, resistance R 38 parallel connections, one termination amplifier U8 pin 7, another termination amplifier U8 pin 6, amplifier U8 pin 5 is by capacitor C 19 ground connection, amplifier U8 pin 7 is connected to single-chip microcomputer pin voltage signal output part AN1 by resistance R 39, voltage signal output end AN1 is by capacitor C 22 ground connection, 2.5V is by resistance R 41, potentiometer W3 ground connection, resistance R 41 is connected amplifier U7 pin 3 with the junction of potentiometer W3, amplifier U7 pin two connects its pin one, amplifier U7 pin one connects amplifier U8 pin 5 by resistance R 40.
Referring to Fig. 5, wherein: output port multiplex circuit 111 comprises that 1 pin of gating switch U9 connects current output terminal 108, 2 pin ground connection, 3 pins connect frequency output terminal 107, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL1 are connected with the I/O mouth of central processing unit 105, 4 pins of gating switch U9 connect 3 pins of gating switch U10, 1 pin of gating switch U10 is connected with RS 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, connect+5V of 5 pins voltage end, 1 pin of gating switch U11 meets RS 485_B, 2, 3 pin ground connection, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of resistance R 9 and gating switch U10 are connected, by 4 pins of diode D6 and gating switch U11, resistance R 15 is connected, resistance R 15 is connected by diode D18 with R9, capacitor C 40, difference connecting resistance R9 and R15 after C41 series connection, C40, the neutral earthing of C41 two capacitances in series, C40, two termination signal output port J2 after C41 two capacitances in series.
Referring to Fig. 2, wherein: power transfer module is general module, J1 connects intrinsic safety electric source input port, + 10V connects battery modular converter input port, DC+ 9～24V power supply one tunnel is through DC/DC transducer, be transformed into+5V is accessed by+5V power transfer module output port for ethene testing circuit 104 and output port multiplex circuit 111, and another road is through DC/DC transducer, and be transformed into+3.3V is accessed by+3V3 power transfer module output port for central processing unit 105.
Referring to Fig. 4, wherein: RS485 communication module is general module, U4 is low-power consumption RS485 transceiver, selects MAX3485 model, completes the transmission of information.
Referring to Fig. 6, wherein: display module is general module, adopt general high brightness eight segment numeral pipes, show numerical value.
Referring to Fig. 7, wherein: battery modular converter is general module.
the second embodiment
In conjunction with Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, a kind of colliery self diagnosis ethylene sensor, comprise: in intrinsic safety shell, intrinsic safety electric source 101 is electrically connected battery modular converter 102 and is electrically connected central processing unit 105, intrinsic safety electric source 101 is order electric connection of power supply modular converter 103 also, ethene testing circuit 104, central processing unit 105, power transfer module 103 is also 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, electrical connection display module 109, RS485 communication module 106 is controlled in central processing unit 105 electrical connections, frequency output terminal 107, the output port multiplex circuit 111 of current output terminal 108.Wherein: central processing unit (105) is selected STM32F103V8T6 model.Feature is: WK, the RF of ethene element, 1,2,3 ends that CT end is connected respectively to the sub-J3 of ethene component terminals.The terminal 2 of the sub-J3 of ethene component terminals is connected to terminal 1 by field effect transistor SST177, the G of field effect transistor SST177 holds by be connected to+5V of resistance R 21, the terminal 3 of the sub-J3 of ethene component terminals is connected to capacitor C 9 by inductance N1, C10, the pin 7 of amplifier U5, the terminal 2 of the sub-J3 of ethene component terminals is by inductance N2, resistance R 22, R23 is connected to amplifier U5 pin 6, amplifier U5 pin 6 connects pin 7 by capacitor C 10, the terminal 3 of the sub-J3 of ethene component terminals is by inductance N1, capacitor C 9, resistance R 22, inductance N2 is connected to the terminal 2 of the sub-J3 of ethene component terminals, the pin 5 of amplifier U5 is connected to 2.5V by resistance R 24, amplifier U5 pin 3 is connected to 2.5V by resistance R 28, the terminal 1 of the sub-J3 of ethene component terminals is by inductance N3, resistance R 25, resistance R 26 connects the pin two of amplifier U5, capacitor C 11, capacitor C 12, resistance R 27 parallel connections, the pin one of one termination amplifier U5, the junction of one terminating resistor R25 and resistance R 26, amplifier U5 pin 8 connects pin 4 by capacitor C 13, connect+5V of pin 8, pin 4 ground connection, amplifier U5 pin one is by resistance R 29, resistance R 30 connects amplifier U6 pin 5, resistance R 29, the junction of resistance R 30 is by capacitor C 14 ground connection, amplifier U6 pin 5 connects amplifier U6 pin 3 by capacitor C 15, amplifier U6 pin 3 meets 2.5V by resistance R 31, amplifier U6 pin two is by resistance R 32, potentiometer W4, resistance R 33 connects amplifier U6 pin 6, resistance R 36 and capacitor C 17 parallel connections, the pin one of one termination amplifier U6, another termination connects amplifier U6 pin two, capacitor C 18 and resistance R 34 parallel connections, one termination connects amplifier U6 pin 7 another termination amplifier U6 pins 6, connect amplifier U6 pin 8 and connect pin 4 by capacitor C 16, meet amplifier U6 pin 8 connect+5V, connect amplifier U6 pin 4 ground connection, amplifier U6 pin one connects amplifier U8 pin 6 by resistance R 37, amplifier U6 pin 7 connects amplifier U8 pin 5 by resistance R 35, capacitor C 20, resistance R 38 parallel connections, one termination amplifier U8 pin 7, another termination amplifier U8 pin 6, amplifier U8 pin 5 is by capacitor C 19 ground connection, amplifier U8 pin 7 is connected to single-chip microcomputer pin voltage signal output part AN1 by resistance R 39, voltage signal output end AN1 is by capacitor C 22 ground connection, 2.5V is by resistance R 41, potentiometer W3 ground connection, resistance R 41 is connected amplifier U7 pin 3 with the junction of potentiometer W3, amplifier U7 pin two connects its pin one, amplifier U7 pin one connects amplifier U8 pin 5 by resistance R 40.
Referring to Fig. 8, wherein: wireless module 112 is electrically connected with central processing unit 105.
Referring to Fig. 5, wherein: output port multiplex circuit 111 comprises that 1 pin of gating switch U9 connects current output terminal 108, 2 pin ground connection, 3 pins connect frequency output terminal 107, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL1 are connected with the I/O mouth of central processing unit 105, 4 pins of gating switch U9 connect 3 pins of gating switch U10, 1 pin of gating switch U10 is connected with RS 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit 105, connect+5V of 5 pins voltage end, 1 pin of gating switch U11 meets RS 485_B, 2, 3 pin ground connection, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit 105, after 4 pins of resistance R 9 and gating switch U10 are connected, by 4 pins of diode D6 and gating switch U11, resistance R 15 is connected, resistance R 15 is connected by diode D18 with R9, capacitor C 40, difference connecting resistance R9 and R15 after C41 series connection, C40, the neutral earthing of C41 two capacitances in series, C40, two termination signal output port J2 after C41 two capacitances in series.
Referring to Fig. 2, wherein: power transfer module is general module, J1 connects intrinsic safety electric source input port, + 10V connects battery modular converter input port, DC+ 9～24V power supply one tunnel is through DC/DC transducer, be transformed into+5V is accessed by+5V power transfer module output port for ethene testing circuit (104) and output port multiplex circuit (111), and another road is through DC/DC transducer, and be transformed into+3.3V is accessed by+3V3 power transfer module output port for central processing unit (105).
Referring to Fig. 4, wherein: RS485 communication module is general module, U4 is low-power consumption RS485 transceiver, selects MAX3485 model, completes the transmission of information.
Referring to Fig. 6, wherein: display module is general module, adopt general high brightness eight segment numeral pipes, show numerical value.
Referring to Fig. 7, wherein: battery modular converter is general module.
Referring to Fig. 9, 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 utility model for ease of understanding: the signal output type of the coal mine safety monitoring system using at present according to mine, determine and 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 output terminal access, original state of the present utility model is calibrated and adjusted to Infrared remote controller, in the time that wire signal is normal, use wired output signal type, in the time that wire signal interrupts, self-starting wireless signal output form.Introduction 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 self-diagnosing method of following a kind of colliery self diagnosis ethylene sensor.
For ease of understanding the self-diagnosing method of introducing colliery self diagnosis ethylene sensor at this.
A kind of colliery with the self-diagnosing method of self diagnosis ethylene sensor is: to the diagnosis of communicating circuit 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 output, when PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, when PORT_CTRL3 is low (L) voltage, for frequency type output, when PORT_CTRL1 is any (X) voltage, PORT_CTRL2 is high (H) voltage, when PORT_CTRL3 is high (H) voltage, for the output of RS485 bus-type, in the time that signal output type is current mode output, the current mode LED light that opens circuit is bright for opening circuit, the current mode LED light that opens circuit is extinguished as without opening circuit, be short circuit when current mode short circuit LED light is bright, current mode short circuit LED light is extinguished as without short circuit, in the time that signal output type is frequency type output, the frequency type LED light that opens circuit is bright for opening circuit, the frequency type LED light that opens circuit is extinguished as without opening circuit, be short circuit when frequency type short circuit LED light is bright, frequency type short circuit LED light is extinguished as without short circuit, in the time that signal output type is the output of RS485 bus-type, RS485 communication failure LED light is lighted communication failure, RS485 communication failure LED light is extinguished communication normally, feature is: under normal operating conditions, the VIN-ADC of power transfer module 101 end is through precision resistance R51 dividing potential drop, by being converted into magnitude of voltage after central processing unit 105 internal modes/number conversion, in the time of magnitude of voltage >=9V, intrinsic safety electric source 101 circuit are normally worked, wire communication uploading data, in the time of 0 < magnitude of voltage < 9V, intrinsic safety electric source 101 circuit are under-voltage, the reserve battery work of self diagnosis ethylene sensor battery modular converter 102 for colliery, cut off output port multiplex circuit 111, start wireless module 112, carrying out wireless communication data uploads, in the time of magnitude of voltage=0, RS485 communication module 106 or frequency output terminal 107 or current output terminal 108 connection broken strings, central processing unit 105 sends and disconnects output port multiplex circuit 111 and power supply instruction thereof, start wireless module 112, carrying out wireless communication data uploads.
Claims (3)
1. a colliery self diagnosis ethylene sensor, comprise intrinsic safety electric source electrical connection battery modular converter electrical connection central processing unit in intrinsic safety shell, intrinsic safety electric source is order electric connection of power supply modular converter also, ethene testing circuit, central processing unit, power transfer module is also electrically connected output port multiplex circuit, battery modular converter electric connection of power supply modular converter, central processing unit is also distinguished infrared connection Infrared remote controller, electrical connection display module, RS485 communication module is controlled in central processing unit electrical connection, frequency output terminal, the output port multiplex circuit of current output terminal, be characterised in that: ethene testing circuit comprises the WK of ethene element, RF, CT end is connected respectively to 1 of the sub-J3 of ethene component terminals, 2, 3 ends, the terminal 2 of the sub-J3 of ethene component terminals is connected to terminal 1 by field effect transistor SST177, the G of field effect transistor SST177 holds by be connected to+5V of resistance R 21, the terminal 3 of the sub-J3 of ethene component terminals is connected to capacitor C 9 by inductance N1, C10, the pin 7 of amplifier U5, the terminal 2 of the sub-J3 of ethene component terminals is by inductance N2, resistance R 22, R23 is connected to amplifier U5 pin 6, amplifier U5 pin 6 connects pin 7 by capacitor C 10, the terminal 3 of the sub-J3 of ethene component terminals is by inductance N1, capacitor C 9, resistance R 22, inductance N2 is connected to the terminal 2 of the sub-J3 of ethene component terminals, the pin 5 of amplifier U5 is connected to 2.5V by resistance R 24, amplifier U5 pin 3 is connected to 2.5V by resistance R 28, the terminal 1 of the sub-J3 of ethene component terminals is by inductance N3, resistance R 25, resistance R 26 connects the pin two of amplifier U5, capacitor C 11, capacitor C 12, resistance R 27 parallel connections, the pin one of one termination amplifier U5, the junction of one terminating resistor R25 and resistance R 26, amplifier U5 pin 8 connects pin 4 by capacitor C 13, connect+5V of pin 8, pin 4 ground connection, amplifier U5 pin one is by resistance R 29, resistance R 30 connects amplifier U6 pin 5, resistance R 29, the junction of resistance R 30 is by capacitor C 14 ground connection, amplifier U6 pin 5 connects amplifier U6 pin 3 by capacitor C 15, amplifier U6 pin 3 meets 2.5V by resistance R 31, amplifier U6 pin two is by resistance R 32, potentiometer W4, resistance R 33 connects amplifier U6 pin 6, resistance R 36 and capacitor C 17 parallel connections, the pin one of one termination amplifier U6, another termination connects amplifier U6 pin two, capacitor C 18 and resistance R 34 parallel connections, one termination connects amplifier U6 pin 7 another termination amplifier U6 pins 6, connect amplifier U6 pin 8 and connect pin 4 by capacitor C 16, meet amplifier U6 pin 8 connect+5V, connect amplifier U6 pin 4 ground connection, amplifier U6 pin one connects amplifier U8 pin 6 by resistance R 37, amplifier U6 pin 7 connects amplifier U8 pin 5 by resistance R 35, capacitor C 20, resistance R 38 parallel connections, one termination amplifier U8 pin 7, another termination amplifier U8 pin 6, amplifier U8 pin 5 is by capacitor C 19 ground connection, amplifier U8 pin 7 is connected to single-chip microcomputer pin voltage signal output part AN1 by resistance R 39, voltage signal output end AN1 is by capacitor C 22 ground connection, 2.5V is by resistance R 41, potentiometer W3 ground connection, resistance R 41 is connected amplifier U7 pin 3 with the junction of potentiometer W3, amplifier U7 pin two connects its pin one, amplifier U7 pin one connects amplifier U8 pin 5 by resistance R 40.
2. a kind of colliery according to claim 1 self diagnosis ethylene sensor, is characterized in that: wireless module is electrically connected with central processing unit.
3. a kind of colliery according to claim 1 and 2 self diagnosis ethylene sensor, it is characterized in that: output port multiplex circuit comprises that 1 pin of gating switch U9 connects current output terminal, 2 pin ground connection, 3 pins connect frequency output terminal, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL1 are connected with the I/O mouth of central processing unit, 4 pins of gating switch U9 connect 3 pins of gating switch U10, 1 pin of gating switch U10 is connected with RS 485_A, 2 pin ground connection, 6 pin PORT_CTRL2 are connected with the I/O mouth of central processing unit, connect+5V of 5 pins voltage end, 1 pin of gating switch U11 meets RS 485_B, 2, 3 pin ground connection, connect+5V of 5 pins voltage end, 6 pin PORT_CTRL3 are connected with the I/O mouth of central processing unit, after 4 pins of resistance R 9 and gating switch U10 are connected, by 4 pins of diode D6 and gating switch U11, resistance R 15 is connected, resistance R 15 is connected by diode D18 with R9, capacitor C 40, difference connecting resistance R9 and R15 after C41 series connection, C40, the neutral earthing of C41 two capacitances in series, C40, two termination signal output port J2 after C41 two capacitances in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737418.1U CN203606341U (en) | 2013-11-19 | 2013-11-19 | Self-diagnosis ethylene sensor for coal mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320737418.1U CN203606341U (en) | 2013-11-19 | 2013-11-19 | Self-diagnosis ethylene sensor for coal mine |
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| CN203606341U true CN203606341U (en) | 2014-05-21 |
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| CN201320737418.1U Expired - Lifetime CN203606341U (en) | 2013-11-19 | 2013-11-19 | Self-diagnosis ethylene sensor for coal mine |
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| Country | Link |
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| CN (1) | CN203606341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616478A (en) * | 2013-11-19 | 2014-03-05 | 煤科集团沈阳研究院有限公司 | Self-diagnosis ethylene sensor for coal mine and self-diagnosis method |
-
2013
- 2013-11-19 CN CN201320737418.1U patent/CN203606341U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616478A (en) * | 2013-11-19 | 2014-03-05 | 煤科集团沈阳研究院有限公司 | Self-diagnosis ethylene sensor for coal mine and self-diagnosis method |
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