为使井下有害气体的浓度不超过《煤矿安全规程》规定,确保井下人员安全,就必须对井下连续不断地输送足够的新鲜空气。矿井主通风机是向井下送风的唯一设备,其运行状况直接关系到矿井的安全,关系到矿工的生命和国家企业的财产安全。另外矿井主通风机是个大耗能设备,用电量大,如果能对其进行在线实时监测和控制,在保障风量的情况 In order to ensure that the concentration of harmful gas in the underground does not exceed the requirements of “Coal Mine Safety Regulations” and to ensure the safety of underground personnel, enough fresh air must be continuously delivered to the well. The main ventilator of the mine is the only equipment that supplies the air to the mine. Its operating status is directly related to the safety of the mine and the life of the miners and the property safety of the state enterprises. In addition mine main fan is a large energy-consuming equipment, power consumption, if it can be online real-time monitoring and control, in the protection of air flow situation