Application of Foreign Matter Detection in EEF Bogie by Measuring Technology of Linear-Structure Light

Non-contact detection is safe and efficient and less used in railway safety detection. This paper proposes a greatly new detection system that combines non-contact detection with railway safety detection. Based on the non-contact detection method—three-dimensional laser detection technology—it can detect foreign objects on the running gear of the train. The technology mainly includes two aspects: laser stripe center line extraction and point cloud processing. In order to improve the detection accuracy, the effect of laser stripe center line extraction must be valued. In this paper, some methods are compared to select the most suitable method for detecting foreign objects in the running gear of the train by the comparison of the stripe centerline extraction effect and the length of detection time. Besides, the paper, on the one hand, also introduces two subsystems of the detection system: hardware system and software system. On the other hand, the implementation principle and working steps of the detection system are also introduced in detail.