The invention relates to a vehicle form and position detection
system and method based on contour scanning. The
system comprises a vehicle number identification module, a speed measuring module, a
laser contourgraph, a gantry, and a
processing system. In addition, the method comprises the following steps that: a
laser contourgraph performs contour scanning on a vehicle running on a track and calculates a 3D
point cloud image through a
laser image and a vehicle speed; vehicle information is matched in a
database based on a vehicle number to obtain a standard 3D
point cloud map; and after comparison of the
point cloud images, the appearance size and external parts of the vehicle are detected. According to the invention, with a
laser scanning vehicle, adaptability to the hostile environment is enhanced and the strong anti-interference ability is high. The provided method is a non-contact detection method not affecting the running of equipment. With the 3D point cloud calculation, all sizes can be measured and the sensor is convenient to
mount. With the three-dimensional matching technology, the recognition accuracy is improved. The overall size of the vehicle and external parts of thevehicle can be detected simultaneously, so that the cost is saved; and the operation capability is optimized by the
algorithm and the work efficiency is improved.