通过研究煤矿井下掘进面通风的特点和规律,总结出一种掘进面自动排放瓦斯方案,设计了瓦斯自动排放系统,着重讨论了作为该系统控制核心的智能组合开关设计方法,阐述了装置内部总线控制结构、硬件电路、软件逻辑的原理。 By studying the characteristics and rules of ventilation in driving face of coal mine, this paper summarizes a scheme of automatically discharging methane in driving face and designs automatic gas drainage system. The design method of intelligent combined switch which is the core of the system is discussed. The internal bus Control structure, hardware circuit, software logic principle.