The research and implementation of closedown controlling method in KJF68

A basic requirement of monitoring system in coal mine is closedown controlling on ventilation equipment，which requires controlling the ventilation equipment on time by rule according to the collecting data of gas monitoring sensors. We developed a new multifunctional monitoring station named KJF68, analyze the relations between controlling on ventilation equipment and data of gas from sensors, and research the method to implement closedown controlling on ventilation equipment in KJF68 which supports local and distant controlling the equipment automatically or manually, and finally programs to implement the method using assembly language. Now the KJF68 is applied widely in coal mines.