Once the bogie is towed into the inspection zone by the traction device, the traction is discontinued. The end-mounted cameras then utilize the movement of robotic arms and sliding rails to acquire data within designated areas and perform 3D scanning. The data acquisition process consists of three phases: the bottom robotic arm captures feature points on the underside of the bogie, while the two side robotic arms capture feature points on the side and top surfaces of the bogie. The acquired data is transmitted via cable to the field control center for algorithmic analysis; following the analysis, the system reports the relevant data and corresponding reports.