Target-free non-contact automobile four-wheel positioning detection device and detection method

The invention discloses a target-free non-contact automobile four-wheel positioning detection device and a detection method, and belongs to the field of automobile four-wheel positioning. The detection method of the target-free non-contact type automobile four-wheel positioning detection device is based on the triangulation principle, through a binocular line structured light measurement method, multiple sets of laser lines are projected on the tire tread, three-dimensional dense point cloud data of the tire and a hub are obtained, and the actual situation of the wheel is restored in a three-dimensional mode. According to the invention, the detection accuracy is higher, the related parameters of four-wheel positioning are obtained through the space plane of the outer edge of the hub, and the influence of tire deformation and wear on four-wheel positioning measurement is avoided. On the other hand, the detection device is controlled by a machine to move, after the space plane of the four wheels of the vehicle