Monitoring and controlling device and coal mine safety monitoring system

Abstract

The invention provides a monitoring and controlling device and a coal mine safety monitoring system. The monitoring and controlling device specifically comprises a circuit breaker, a converter and a host machine, wherein the circuit breaker is connected with a switch, an explosion-proof power box and the host machine, the switch is connected with a power grid, the power grid is de-energized, the switch is disconnected, and the circuit breaker is closed to control the automatic closing of the switch; the converter is used for converting voltage signals at two ends of a storage battery in the explosion-proof power box into frequency signals; and the host machine is electrically connected with the circuit breaker and the converter, a voltage value is obtained by the host machine through computation according to the frequency values of the frequency signals, and the closing of the circuit breaker is controlled according to the voltage value so as to enable the switch to close automatically. According to the monitoring and controlling device provided by the invention, whether electricity is taken from the power grid can be automatically selected according to the voltage value of the storage battery, so that the condition that electricity is not taken in time because the storage battery is low in electric quantity can be greatly reduced, the situation that a monitoring sub-station is electrified constantly, and the use reliability of the coal mine safety monitoring system is improved.

Description

technical field [0001] The invention relates to mine safety monitoring and monitoring technology, in particular to a monitoring control device and a coal mine safety monitoring system. Background technique [0002] The coal mine safety monitoring system is mainly used to monitor various environmental parameters such as gas, carbon monoxide, wind speed or temperature in the mine in real time, and implement functions such as gas over-limit power-off control. The coal mine safety monitoring system includes sensors, monitoring substations, explosion-proof power boxes and monitoring hosts. Among them, the sensor and the monitoring substation are set up under the mine, the sensor is used to monitor the corresponding environmental parameters, and the monitored value is sent to the monitoring substation; the monitoring substation sends the collected value to the monitoring host; the monitoring host according to the above The numerical value judges whether the downhole operation is ...

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