Mine intrinsic safety type automatic drainage and measurement and control protection device

Abstract

The invention relates to a mine intrinsic safety type automatic drainage and measurement and control protection device. The device comprises a measurement and control protection mainboard, a man-machine interface and a switch power supply, wherein the measurement and control protection mainboard comprises a central processing unit (CPU) main control unit, a data acquisition circuit, an analog / digital (A / D) conversion circuit, an intrinsic safety type switch state monitoring circuit and a switch control circuit; the intrinsic safety type switch state monitoring circuit detects a state signal of a water pump switch and transmits the detected state signal to the CPU main control unit; and the data acquisition circuit comprises a current signal conditioning circuit, a voltage signal conditioning circuit and a leakage resistance detection circuit which are used for detecting a current signal, a voltage signal and a leakage signal of a water pump respectively, and an intrinsic safety type water level detection circuit. Coal mine underground automatic drainage and coal mine power grid microcomputer protection are combined, and multiple functions of water level measurement, electric quantity measurement, automatic water pump starting and stopping control, water pump motor protection, display, communication, event recording and the like are integrated, so that an intelligent terminal device for a coal mine underground automatic drainage and coal mine power grid integrated automation system is formed.

Description

technical field [0001] The invention relates to an intrinsically safe automatic drainage and measurement and control protection device for mines, which belongs to the technical field of underground automatic detection of coal mines and the technical field of microcomputer protection of underground power systems, and can be used for automatic control of water pumps and their measurement, control and protection systems in underground mines and high-gas coal mines. . Background technique [0002] At present, the underground drainage of most coal mines in my country is realized through manual control. Manually operated drainage systems are not only labor-intensive, take a long time to start and stop, and have low efficiency. Start and stop. Due to many operation steps and great hidden dangers of human misoperation, it is not suitable for modern mine management. At this stage, the detection of underground water level in coal mines and the real-time automatic drainage control tec...

AI Technical Summary

Problems solved by technology

The device starts and stops the external explosion-proof switch according to the water level, and has a single function; that is, the device only realizes water level detection, water level display, and control node output, but the functions of external water pump motor control, switch protection and control are not involved. It can realize all functions and needs to be used in combination with other equipment, which will inevitably lead to complex systems and reduced safety and reliability.

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