To provide a technique for providing robustness against vibrations in a train pitch direction when an abnormality of a line structure ahead of a train in an advancing direction is detected using a three-dimensional LiDAR device mounted on the train.SOLUTION: The abnormality detection system comprises: point group acquisition means for acquiring a point group corresponding to a line structure ahead of a train in an advancing direction; a point group correction means for dividing the point group in a lattice shape in a planar view, and correcting the point group so as to replace, for each cell, height values of a plurality of ranging points belonging to the cell with a representative value of the height values of the ranging points to reduce an error of a height value of the point group caused by vibrations in a pitch direction of the train; and abnormality detection means for detecting an abnormality of the line structure on the basis of the point group.SELECTED DRAWING: Figure 1

    【課題】列車に搭載された三次元LiDAR装置を用いて列車の進行方向前方における線路構造体の異常を検出するに際し、列車のピッチ方向における振動に対する頑健性を有する技術を提供する。【解決手段】異常検出システムは、列車の進行方向前方の線路構造体に対応する点群を取得する点群取得手段と、前記点群を平面視で格子状に分割し、各セル毎に、当該セルに属する複数の測距点の標高値を前記複数の測距点の標高値の代表値で置換するように前記点群を補正することで、前記列車のピッチ方向における振動に起因する前記点群の標高値の誤差を減らす点群補正手段と、前記点群に基づいて前記線路構造体の異常を検出する異常検出手段と、を含む。【選択図】図1


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    Title :

    ABNORMALITY DETECTION SYSTEM, ABNORMALITY DETECTION DEVICE, ABNORMALITY DETECTION METHOD, AND PROGRAM


    Additional title:

    異常検出システム、異常検出装置、異常検出方法、及び、プログラム


    Contributors:

    Publication date :

    2025-04-09


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC



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