Mine self-diagnosis methane sensor and self-diagnosis method

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 ...

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.

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