Self-diagnosis carbon monoxide sensor for coal mine and self-diagnosis method

Abstract

The invention relates to a self-diagnosis carbon monoxide sensor for a coal mine and a self-diagnosis method. In the self-diagnosis carbon monoxide sensor, an intrinsically safe power supply in an intrinsically safe housing is electrically connected with a battery conversion module and then electrically connected with a central processor; the intrinsically safe power supply is further electrically connected with a power supply conversion module, a carbon monoxide detection circuit and the central processor in sequence; the power supply conversion module is further electrically connected with an output port multiplexing circuit; the battery conversion module is electrically connected with the power supply conversion module; and the central processor is further connected with an infrared remote controller in an infrared manner and electrically connected with a display module respectively. The self-diagnosis carbon monoxide sensor is characterized in that the central processor is electrically connected with the output port multiplexing circuit which is used for controlling an RS485 communication module, a frequency output end and a current output end. The invention provides a self-diagnosis method of the self-diagnosis carbon monoxide sensor for the coal mine simultaneously. Via the self-diagnosis carbon monoxide sensor and the self-diagnosis method disclosed by the invention, the integration of output multi-standard communication modes is realized; simultaneously, infrared remote control, self-diagnosis for the open-circuit states, the short-circuit states and the communication signal fault states of current-type, frequency-type and RS485 bus-type output circuits, and self-diagnosis and information transmission for the carbon monoxide component are realized.

Description

technical field [0001] The invention belongs to the technical field of sensors for coal mines, and relates to a carbon monoxide sensor for coal mines, in particular to a self-diagnosing carbon monoxide 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 carbon monoxide sensors for coal mines have no substantive self-diagnosis function for faults, especially no self-dia...

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 carbon monoxide sensors for coal mines have no substantive self-diagnosis function for faults, especially no self-diagnosis function for component damage and whether the power supply is working normally. They only have the function of wired digital information transmission or frequency signal transmission. 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 carbon monoxide sensor is not perfect.

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