Three-level intelligent combined control system for mine local fan

The invention discloses a three-level intelligent combined control system for a mine local fan, and belongs to the technical field of intelligent control of mine tunnels. The three-level intelligent combined control system comprises a monitoring system, a conversion system and a control system, wherein the monitoring system comprises a feeder switch, a double-power supply fan switch, a direct-current power supply, a gas sensor, an air speed sensor and a video surveillance device; the conversion system comprises a monitoring substation, a direct-current power supply and an Ethernet switch; thecontrol system comprises a ground control machine, and video dispatching and surveillance software; the control system is connected to the conversion system through Ethernet; and the conversion systemis connected to the monitoring system. The "fan point-underground power substation-ground dispatching" three-level intelligent combined control system provided by the invention is a control system integrating mine power suppl