CN103616478A - Self-diagnosis ethylene sensor for coal mine and self-diagnosis method - Google Patents
Self-diagnosis ethylene sensor for coal mine and self-diagnosis method Download PDFInfo
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Abstract
The invention relates to a self-diagnosis ethylene sensor for a coal mine and a self-diagnosis method. According to the self-diagnosis ethylene sensor, an intrinsic safety power supply in an intrinsic safety shell is electrically connected with a battery conversion module which is electrically connected with a central processing unit; the intrinsic safety power supply is also sequentially and electrically connected with a power supply conversion module, an ethylene detection circuit and the central processing unit; the power supply conversion module is further electrically connected with an output port reusing circuit; the battery conversion module is electrically connected with the power supply conversion module; the central processing unit is further connected with an infrared remote controller in an infrared manner and is electrically connected with a display module; the central processing unit is electrically connected with the output port reusing circuit for controlling an RS485 communication module, a frequency output end and a current output end. The self-diagnosis ethylene sensor is characterized by being provided with the ethylene detection circuit. According to the self-diagnosis ethylene sensor for the coal mine and the self-diagnosis method, the integration of current type, frequency type and RS485 bus type output multi-system communication manners is realized; the anti-jamming capability is improved by the self diagnosis of open-circuit, short-circuit and communication signal fault states of current type, frequency type and RS485 bus type output circuits; the signal output is stable; manual and remote-control zero point and concentration sensitivity calibration is convenient.
Description
Technical field
The invention belongs to colliery sensor technical field, relate to colliery ethylene sensor, relate in particular to ethylene sensor and the self-diagnosing method of self diagnosis for colliery.
Background technology
At present, China's coal-mine safety monitoring system has been obtained tremendous development, but also there are some urgent problems, particularly information acquisition and the backwardness in transmission technology at 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 interrupt to produce 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.
Summary of the invention
For the existing technical matters of ethylene sensor for existing colliery, increase self-diagnostic function.Provide a kind of damage of diagnostic element voluntarily and power supply whether to work, whether the opening circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal ethylene sensor and the self-diagnosing method for colliery of the self diagnosis of fault, the ethene testing circuit adopting has improved antijamming capability, by filter design, make signal output steadily, manually and remote control zero point, concentration sensitivity calibration convenient.
The present invention wants the technical scheme of technical solution problem to be: a kind of colliery self diagnosis ethylene sensor is provided, comprise: in intrinsic safety shell, intrinsic safety electric source is electrically connected to battery modular converter and is electrically connected to central processing unit, 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 to 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, be electrically connected to display module, central processing unit is electrically connected to controls RS485 communication module, 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 end of field effect transistor SST177 is 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, the junction of resistance R 41 and potentiometer W3 is connected amplifier U7 pin 3, 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 to 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, 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 self-diagnosing method of self diagnosis ethylene sensor for a kind of colliery, diagnosis to 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, when 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, when current mode short circuit LED light is bright, it is short circuit, current mode short circuit LED light is extinguished as without short circuit, when 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, when frequency type short circuit LED light is bright, it is short circuit, frequency type short circuit LED light is extinguished as without short circuit, when 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 end is through precision resistance R51 dividing potential drop, by being converted into magnitude of voltage after central processing unit internal mode/number conversion, intrinsic safe power circuit normal operation when magnitude of voltage >=9V, wire communication uploading data.
Wherein: when 0 < magnitude of voltage < 9V, intrinsic safe power circuit is under-voltage, and the reserve battery work of self diagnosis ethylene sensor battery modular converter for colliery, cuts off output port multiplex circuit, start wireless module, carry out wireless communication data and upload.
Wherein: when magnitude of voltage=0, RS485 communication module or frequency output terminal or current output terminal connection broken string, central processing unit sends and disconnects output port multiplex circuit and power supply instruction thereof, starts wireless module, carries out wireless communication data and uploads.
The invention has the beneficial effects as follows: the invention provides output port multiplex circuit, realized 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, realized the present invention to current mode, frequency type, opening circuit of RS485 bus-type output circuit, short circuit, the self diagnosis of communication signal malfunction, realized the self diagnosis of ethene element and communication simultaneously, the ethene testing circuit adopting has improved antijamming capability, by filter design, make signal output steadily, manually and remote control zero point, concentration sensitivity calibration is convenient.
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. ethene 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. 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 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 to battery modular converter 102 and is electrically connected to 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 to 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 to display module 109, central processing unit 105 is electrically connected to controls RS485 communication module 106, 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 end of field effect transistor SST177 is 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, the junction of resistance R 41 and potentiometer W3 is connected amplifier U7 pin 3, 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 to battery modular converter 102 and is electrically connected to 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 to 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 to display module 109, central processing unit 105 is electrically connected to controls 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 STM32F103V8T6 model.Feature is: the WK of ethene element, RF, CT end are connected respectively to 1,2,3 ends of 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 end of field effect transistor SST177 is 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, the junction of resistance R 41 and potentiometer W3 is connected amplifier U7 pin 3, 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 to 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.
For ease of understanding, introduce principle of work of the present invention: 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 invention is calibrated and adjusted to Infrared remote controller, when wire signal is normal, uses wired output signal type, when wire signal interrupts, self-starting wireless signal output form.Self-diagnosing method introduction with the self-diagnosing method of self diagnosis ethylene sensor referring to following a kind of colliery to the opening circuit of current mode, frequency type, RS485 bus-type output circuit, short circuit, communication signal malfunction.
the 3rd embodiment
Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, a kind of colliery with the self-diagnosing method of self diagnosis ethylene sensor is: the diagnosis to 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, when 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, when current mode short circuit LED light is bright, it is short circuit, current mode short circuit LED light is extinguished as without short circuit, when 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, when frequency type short circuit LED light is bright, it is short circuit, frequency type short circuit LED light is extinguished as without short circuit, when 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, intrinsic safety electric source 101 circuit normal operations when magnitude of voltage >=9V, wire communication uploading data.
Wherein: when 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, carry out wireless communication data and upload.
Wherein: when 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, starts wireless module 112, carries out wireless communication data and uploads.
Claims (6)
1. a colliery self diagnosis ethylene sensor, comprise that in intrinsic safety shell, intrinsic safety electric source is electrically connected to battery modular converter electrical connection central processing unit, 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 to 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, be electrically connected to display module, central processing unit is electrically connected to controls RS485 communication module, 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 end of field effect transistor SST177 is 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, the junction of resistance R 41 and potentiometer W3 is connected amplifier U7 pin 3, 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 to 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.
4. the self-diagnosing method of self diagnosis ethylene sensor for a colliery, diagnosis to 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, when 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, when current mode short circuit LED light is bright, it is short circuit, current mode short circuit LED light is extinguished as without short circuit, when 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, when frequency type short circuit LED light is bright, it is short circuit, frequency type short circuit LED light is extinguished as without short circuit, when 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, be characterised in that: under normal operating conditions, the VIN-ADC of power transfer module end is through precision resistance R51 dividing potential drop, by being converted into magnitude of voltage after central processing unit internal mode/number conversion, intrinsic safe power circuit normal operation when magnitude of voltage >=9V, wire communication uploading data.
5. the self-diagnosing method of self diagnosis ethylene sensor for a kind of colliery according to claim 4, it is characterized in that: wherein, when 0 < magnitude of voltage < 9V, intrinsic safe power circuit is under-voltage, the reserve battery work of self diagnosis ethylene sensor battery modular converter for colliery, cut off output port multiplex circuit, start wireless module, carry out wireless communication data and upload.
6. according to a kind of colliery described in claim 4 or 5, use the self-diagnosing method of self diagnosis ethylene sensor, it is characterized in that: wherein, when 0 < magnitude of voltage < 9V, intrinsic safe power circuit is under-voltage, the reserve battery work of self diagnosis ethylene sensor battery modular converter for colliery, cut off output port multiplex circuit, start wireless module, carry out wireless communication data and upload.
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Application publication date: 20140305 |