To precisely detect speed reduction of a preceding vehicle without any influence of bad weather.SOLUTION: A speed reduction detection device 50 comprises: a body detector 1a which detects a body in a circumference of the vehicle; a rainfall detector 1b which detects a rainfall state in the circumference of the vehicle; a lightness detector 1c which detects lightness in the circumference of the vehicle; and a speed reduction determination part 145 which detects whether a preceding vehicle reduces the speed based upon a quantity of variation in vehicle speed of the preceding vehicle traveling before the vehicle that the body detector 1a detects, a lighting state of brake lamps of the preceding vehicle that the body detector 1a detects, the rainfall state that the rainfall detector 1b detects, and the lightness that the lightness detector 1c detects.SELECTED DRAWING: Figure 3

    【課題】悪天候の影響を受けずに前方車両の減速を精度よく検知する。【解決手段】減速検知装置50は、自車両の周囲の物体を検出する物体検出器1aと、自車両の周囲の降雨状態を検出する降雨検出器1bと、自車両の周囲の明るさを検出する明るさ検出器1cと、物体検出器1aにより検出された自車両の前方を走行する前方車両の車速の変化量と、物体検出器1aにより検出された前方車両のブレーキランプの点灯状態と、降雨検出器1bにより検出された降雨状態と、明るさ検出器1cにより検出された明るさとに基づいて、前方車両の減速の有無を判定する減速判定部145と、を備える。【選択図】図3


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    Title :

    SPEED REDUCTION DETECTION DEVICE


    Additional title:

    減速検知装置


    Contributors:
    OI AKIYOSHI (author) / ISHII KENTA (author) / KANEDA YUYA (author) / KONISHI TATSUYA (author)

    Publication date :

    2022-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / H04N PICTORIAL COMMUNICATION, e.g. TELEVISION , Bildübertragung, z.B. Fernsehen



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