Crusher material opening ore blocking monitoring method based on radar monitoring

The invention discloses a method for monitoring ore blockage at a feed port of a crusher based on radar monitoring, and belongs to the technical field of ore production. The method comprises the following steps: 1, acquiring an initial three-dimensional image of a feed opening; 2, the feeder conveys materials to the discharging port, meanwhile, the three-dimensional image of the discharging port is collected and generated again, and the area, possibly covered by the materials, of the discharging port is determined to be an ROI area; 3, gridding the ROI region, and setting a grid warning value; 4, acquiring a normal three-dimensional image at the feed opening at the beginning of the normal operation stage, taking the average value of the point cloud information in the grids belonging to the ROI in the normal three-dimensional image as a normal initial value, and taking the sum of the grid warning value and the normal initial value as a warning threshold value; 5, when the average value of the point cloud infor