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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

Active Publication Date: 2013-02-27
CCTEG SHENYANG RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, my country's coal mine safety monitoring system has made great progress, but there are still some problems that need to be solved urgently, especially in the information collection and transmission technology of the coal mine safety monitoring system, which is affected by false alarms, monitoring blind spots, backward collection methods, and sensor adjustment. Restricted by factors such as short cycle, low degree of intelligence, heavy maintenance workload, and misoperation by personnel, the reliability of the coal mine safety monitoring system is seriously affected
In particular, the existing coal mine methane sensor has no substantive self-diagnosis function for faults, especially no self-diagnosis function for the degree of component damage and whether the power supply is working normally; Technical problems of false positives caused by monitoring interruptions, etc.
The central processing unit is directly connected to the RS485 communication module or the frequency output terminal or the current output terminal. At present, different mines adopt different systems, which will cause mismatches when selecting, and the self-diagnosis function of the methane sensor is not perfect.

Method used

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  • Mine self-diagnosis methane sensor and self-diagnosis method
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  • Mine self-diagnosis methane sensor and self-diagnosis method

Examples

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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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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 [0001] The invention belongs to the technical field of sensors for coal mines, and relates to a methane sensor for coal mines, in particular to a self-diagnosing methane sensor for coal mines and a self-diagnosis method. Background technique [0002] At present, my country's coal mine safety monitoring system has made great progress, but there are still some problems that need to be solved urgently, especially in the information collection and transmission technology of the coal mine safety monitoring system, which is affected by false alarms, monitoring blind spots, backward collection methods, and sensor adjustment. Factors such as short cycle, low level of intelligence, heavy maintenance workload, and personnel misoperation seriously affect the reliability of the coal mine safety monitoring system. In particular, the existing coal mine methane sensor has no substantive self-diagnosis function for faults, especially no self-diagnosis function for the degree ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/00G01R31/02
Inventor 冯文彬付文俊李长录张东刘鹏付小倍
Owner CCTEG SHENYANG RES INST
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