使用PLC与变频器相结合的方式,以井下气压压力为主要控制对象,对煤矿离心风机的运转与转速进行控制,对其产生的温度过高、机械故障、有害气体超标等进行报警,提高井下通风效率与安全性,并达到明显的节能效果,为煤矿通风系统的节能改造提供借鉴。 The use of PLC and inverter combination of ways to underground pressure as the main control object of the mine centrifugal fan operation and speed control, the resulting temperature is too high, mechanical failure, excessive gas and other harmful gas alarm to improve the underground Ventilation efficiency and safety, and achieve significant energy-saving effect, providing reference for the energy-saving renovation of coal mine ventilation system.