Method for controlling automatic loading of automobile by using point cloud slope

The invention provides a method for controlling automatic loading of an automobile by using a point cloud slope. The method comprises the following steps of: identifying point cloud data of a driving-in automobile according to a laser radar, and judging whether the driving-in automobile is a loading automobile or not; if yes, whether the minimum difference value between the x coordinate of the front baffle of the carriage and the x coordinate of the discharging port is larger than a set threshold value or not and whether the deflection angle of the carriage is smaller than or equal to the preset threshold value or not are judged; discharging of a discharging opening is controlled according to the preset filling time; obtaining a Y-direction material slope and an X-direction material slope; whether the Y-direction material slope reaches the maximum slope or not and whether the X-direction material slope reaches the maximum slope or not are judged; if yes, the front side of the loading carriage meets the preset