Automatic drainage method and device suitable for underground coal mine

The invention provides an automatic drainage method and device suitable for an underground coal mine, and relates to the technical field of automatic control. The method comprises the following steps: calling a sensor to continuously monitor a water sump to obtain a target water level of the water sump; m pump sets connected with the controller are continuously monitored, operation information of any one of the M pump sets is obtained, and M is an integer larger than 2; and controlling the M pump sets according to the target water level and the operation information of any pump set so as to drain water from the water sump. The automation degree of water sump drainage is improved, the water pump utilization rate is improved, equipment such as a water pump motor can be effectively protected, the service life of the equipment is prolonged, potential safety hazards caused by water invasion in the equipment are avoided, and the drainage efficiency is improved. 本申请提出了一种适用于煤矿井下的自动排水方法及其装置，涉及自动控制技术领域。该方法包括：调用传感器持续对水仓