Mine self-diagnosis methane sensor and self-diagnosis method
A methane sensor and self-diagnosis technology, which is applied in the field of methane sensor for coal mine, methane sensor for self-diagnosis in coal mine and self-diagnosis field, can solve the problem of methane sensor self-diagnosis function is not perfect, the degree of intelligence is not high, the maintenance workload is large, etc. problem, to achieve the effect of self-diagnosis and information transmission
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no. 1 example
[0022] combine figure 1 .The structural principle diagram of the first embodiment of the present invention, a self-diagnosing methane sensor for coal mines, including: an intrinsically safe power supply 101 in the intrinsically safe casing is electrically connected to a battery conversion module 102 and then electrically connected to a central processing unit 105, and the intrinsically safe power supply 101 is also sequentially Electrically connected to the power conversion module 103, the methane detection circuit 104, and the central processing unit 105, the power conversion module 103 is also electrically connected to the output port multiplexing circuit 111, the battery conversion module 102 is electrically connected to the power conversion module 103, and the central processing unit 105 is also connected to the infrared The infrared remote control 110 is electrically connected to the display module 109, and is characterized in that the central processing unit 105 is electr...
no. 2 example
[0031] combine Figure 8Structural principle diagram of the second embodiment of the present invention, a self-diagnosing methane sensor for coal mines, including: an intrinsically safe power supply 101 in the intrinsically safe casing is electrically connected to a battery conversion module 102 and then electrically connected to a central processing unit 105, and the intrinsically safe power supply 101 is also sequentially Electrically connected to the power conversion module 103, the methane detection circuit 104, and the central processing unit 105, the power conversion module 103 is also electrically connected to the output port multiplexing circuit 111, the battery conversion module 102 is electrically connected to the power conversion module 103, and the central processing unit 105 is also connected to the infrared Infrared remote controller 110, electrically connected to display module 109, characterized in that central processing unit 105 is electrically connected to co...
no. 3 example
[0042] A self-diagnosis method for a self-diagnostic methane sensor used in coal mines is: to diagnose circuit faults, first judge the signal output type, when PORT_CTRL1 is high (H) voltage, PORT_CTRL2 is low (L) voltage, and PORT_CTRL3 is low (L) voltage When PORT_CTRL1 is low (L) voltage, PORT_CTRL2 is low (L) voltage, and PORT_CTRL3 is low (L) voltage, it is frequency output; when PORT_CTRL1 is any (X) voltage, PORT_CTRL2 is high (H) voltage, when PORT_CTRL3 is high (H) voltage, it is RS485 bus-type output; when the signal output type is current-type output, the current-type circuit breaker LED indicator light is on for open circuit, and the current-type circuit breaker LED indicator light is off for no open circuit. When the current type short circuit LED indicator light is on, it means short circuit, and the current type short circuit LED indicator light is off, which means no short circuit; when the signal output type is frequency type output, the frequency type open cir...
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