To provide a vehicle length detector that can accurately detect whether or not a vehicle length is equal to or more than a threshold value, regardless of an installation environment of the vehicle length detector.SOLUTION: A vehicle length detector includes: a first time acquisition unit that acquires a first time indicating a time when a vehicle has passed an approach detection position based on a vehicle detection signal indicating whether or not the vehicle is present at the approach detection position in a lane; a second time acquisition unit that acquires a second time indicating a time when the vehicle has reached a vehicle length determination position based on a vehicle length detection signal indicating whether or not the vehicle is present at the vehicle length determination position downstream in a vehicle travel direction from the approach detection position; an offset processing unit that offsets the second time by an offset amount corresponding to an installation environment of the vehicle length detector; and a determination unit that determines that the vehicle length is equal to or more than a threshold value when the second time after offsetting is earlier than the first time.SELECTED DRAWING: Figure 2

    【課題】車長検知器の設置環境によらず、車両の車長が閾値以上であるか否かを精度よく検知可能な車長検知器を提供する。【解決手段】車長検知器は、車線の進入検出位置に車両が存在するか否かを示す車両検知信号に基づいて、前記車両が前記進入検出位置を通り過ぎた時刻を示す第1時刻を取得する第1時刻取得部と、前記進入検出位置よりも車両進行方向の下流側の車長判定位置に前記車両が存在するか否かを示す車長検知信号に基づいて、前記車両が前記車長判定位置へ到達した時刻を示す第2時刻を取得する第2時刻取得部と、前記車長検知器の設置環境に応じたオフセット量で前記第2時刻をオフセットするオフセット処理部と、オフセット後の前記第2時刻が前記第1時刻よりも前である場合に、前記車両の車長が閾値以上であると判定する判定部と、を備える。【選択図】図2


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    Title :

    VEHICLE LENGTH DETECTOR, VEHICLE LENGTH DETECTION METHOD, AND PROGRAM


    Additional title:

    車長検知器、車長検知方法、およびプログラム


    Contributors:

    Publication date :

    2023-09-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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