Device and method for detecting advancing position of coal face

The invention discloses a device and method for detecting the advancing position of a coal face. The device comprises a number plate, a dome camera, a wireless communication base station, a video analysis server and a main control computer. The method has the advantages that the two optimal values of the number plates arranged in a roadway are determined, namely the optimal value d of the distance between the adjacent number plates and the optimal value N of the number plate number shot within the wide angle during shooting of the dome camera, meanwhile, the video analysis server is set to preferentially read the shooting information of the center position, so that the shooting information of the center position can be effectively analyzed, the data collected by a main control center system is ensured to be digital information shot by the wide-angle center of the dome camera all the time, the positioning error is reduced, and the accurate detection of the advancing positions of the two roadways of the working