The invention relates to the technical field of railway clearance measurement, and provides a railway clearance automatic measurement method and system based on laser point cloud.The method comprises the steps that in the railway clearance measurement process, overall point cloud data and local point cloud data are collected; marking a first adjacent acquisition moment and the target point cloud data, obtaining an external highlight weight and an adjacent curvature of the target point cloud data, and obtaining a local curvature ratio of the first adjacent acquisition moment; according to an included angle between vectors formed by the corresponding point cloud data in the adjacent acquisition moments and an external highlight original weight of the target point cloud data, obtaining a local height included angle ratio of the first adjacent acquisition moments, and obtaining an optimal orbit length of the first adjacent acquisition moments; and performing railway segmentation processing according to the optimal track length at all acquisition moments in the railway gauge measurement process, and obtaining an automatic measurement result of the railway gauge in combination with the local point cloud data. The problem that the railway gauge measurement result is inaccurate due to the fact that the railway section length is unreasonably arranged is solved.

    本发明涉及铁路限界测量技术领域,提出了基于激光点云的铁路限界自动化测量方法及系统,包括:在铁路限界测量的过程中,采集整体点云数据和局部点云数据;标记第一相邻采集时刻和目标点云数据,获取目标点云数据的外凸显著权重和相邻曲率,获取第一相邻采集时刻的局部曲率比;根据相邻的采集时刻中对应的点云数据构成的向量之间的夹角和目标点云数据的外凸显著权重,获取第一相邻采集时刻的局部高度夹角比,获取第一相邻采集时刻的最优轨道长度;根据铁路限界测量的过程中所有采集时刻的最优轨道长度进行铁路分段处理,结合局部点云数据,获取铁路限界自动化测量结果。本发明解决铁路分段长度设置不合理,导致铁路限界测量结果不准确的问题。


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    Titel :

    Railway gauge automatic measurement method and system based on laser point cloud


    Weitere Titelangaben:

    基于激光点云的铁路限界自动化测量方法及系统


    Beteiligte:
    ZHONG XIAOJUN (Autor:in) / CHEN DONGMEI (Autor:in) / QU YUFU (Autor:in) / WANG JIE (Autor:in) / WANG YAN (Autor:in) / WEN NI (Autor:in) / LIAO SHUIHUA (Autor:in) / ZHANG HUA (Autor:in) / LI CHENGJIAN (Autor:in) / IM JA-HYUN (Autor:in)

    Erscheinungsdatum :

    14.02.2025


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G06V / B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen






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