A cantilever system segmentation and parameter detection method based on convexity and convexity

Abstract

The invention discloses a cantilever system segmentation and parameter detection method based on convexity and convexity. The method comprises the following steps of A, acquiring three-dimensional point cloud of a catenary cantilever system; B, preprocessing the source point cloud, including object extraction and filtering noise reduction; C, performing over-segmentation on the cantilever system by using a hyper-volume clustering algorithm; D, performing step-by-step segmentation on the cantilever system by adopting an SC-LCCP algorithm, and giving out a selection range of segmentation parameters; E, obtaining linear equations of all linear parts by using a P-RANSAC algorithm, and calculating coordinates of all connection points, the point number ratio of all the linear parts and a proportional position coefficient. According to the invention, the consumption of manpower and material resources is reduced, and the method is not influenced by weather and experience judgment of operatingpersonnel; the step-by-step segmentation has better noise resistance and robustness, the detection efficiency of the catenary cantilever system is improved, and the working condition of the catenary cantilever system can be monitored and detected in real time.

Description

technical field [0001] The invention relates to the field of high-speed railway catenary maintenance and detection, in particular to a wrist-arm system segmentation and parameter detection method based on unevenness. Background technique [0002] With the vigorous development of electrified railways, the speed of trains is also increasing. In order to ensure the high efficiency of train operation, high requirements are put forward for the stability and reliability of pantograph current receiving. Therefore, the rigidity invariance of the wrist-arm system must be guaranteed. The loosening and displacement of the connecting parts of the wrist-arm system will, on the one hand, cause the catenary cable and the contact line to deviate from the original position, resulting in bowing and other phenomena; on the other hand, it will change the internal stress structure of the wrist-arm system, resulting in catenary Local or regional loosening of the system affects the normal operati...

AI Technical Summary

Problems solved by technology

The loosening and displacement of the connecting parts of the wrist-arm system will, on the one hand, cause the catenary cable and the contact line to deviate from the original position, resulting in bowing and other phenomena; on the other hand, it will change the internal stress structure of the wrist-arm system, resulting in catenary Local or regional looseness of the system affects the normal operation of the train

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