Study on the Ventilation intelligent control system of Mining Driving Face Based on PLC

摘要

This paper presents a ventilation intelligent control system of mining driving face based on frequencies change technique and pulsating ventilationtechnique.This system can analyse the gas concentration signal from the gas sensor and make a judgement to the environment of mining driving face.Controlthe rotate speed of the auxiliary fan in real-time,In order to realize the ventilation intelligent control of mining driving face.When the gas gushes instantly,thesystem gives out a sound-light alarm and the rotate speed of the auxiliary fan will be accelerated,so the gas concentration will be diluted immediately.Theproduction safety of the mining driving face can be insured.