Top anti-collision system applied to heavy truck

The invention relates to a top anti-collision system applied to a heavy truck, the top anti-collision system comprises a laser radar, a front-view camera, a high-precision map module and a high-precision positioning module, the system further comprises a roof anti-collision controller, the roof anti-collision controller comprises a laser radar module connected with the laser radar and used for receiving point cloud data information of a road; the camera module is connected with the foresight camera and is used for receiving image data information of the road; and the target recognition module is connected with the laser radar module and the camera module and is used for recognizing obstacles on the road by adopting a local feature recognition algorithm based on the point cloud and the image of the hierarchical Mercator projection according to the point cloud data information and the image data information of the road so as to obtain the state data information of the obstacles. According to the invention, a dr