The invention discloses a curve overspeed early warning and active speed limiting method. The method comprises the steps of: detecting lane information, obtaining a road curvature sequence, and obtaining a curvature maximum value and a corresponding relative longitudinal distance d; obtaining an allowable vehicle speed sequence V and an allowable vehicle speed minimum value Vmin corresponding to the road curvature sequence; acquiring a current vehicle speed, judging whether a lane departure risk exists when a vehicle enters a curve with the current vehicle speed, and if so, acquiring time TTCPrequired for reaching a curve arriving urgent point; and searching a speed limit value Vlimit corresponding to the time TTCP required for reaching the curve arriving urgent point in the allowable vehicle speed sequence V, outputting the speed limit value Vlimit to a driving brake system, and executing the received speed value according to the driving brake system. The invention further disclosesa curve overspeed early warning and active speed limiting system. The vehicle speed can be controlled within a safe speed range on the basis of an automatic driving function, and the expected vehiclespeed can be automatically recovered when the vehicle is driven out of the curve.

    本发明公开了一种弯道超速预警及主动限速方法,包括检测车道信息,获取道路曲率序列,获取曲率最大值,及对应的相对纵向距离d;获取与道路曲率序列对应的允许车速序列V及允许车速最小值Vmin;获取当前车速,判断当前车速入弯是否存在偏离车道风险,若是,则获取到达弯最急点所需的时间TTCP;在允许车速序列V中查找与到达弯最急点所需的时间TTCP对应的限速值Vlimit,将限速值Vlimit输出至驱动制动系统,根据驱动制动系统执行接收到的速度值。本发明还公开了一种弯道超速预警及主动限速系统。能配合自动驾驶功能,将车速控制在安全速度范围内,并在驶出弯道时自动恢复到预期车速。


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    Titel :

    Curve overspeed early warning and active speed limiting method and system


    Weitere Titelangaben:

    一种弯道超速预警及主动限速方法和系统


    Beteiligte:
    XIONG SHENGJIAN (Autor:in) / LI PIAO (Autor:in) / SHENG KAI (Autor:in) / JIANG CHAO (Autor:in) / KANG DAIKE (Autor:in)

    Erscheinungsdatum :

    2020-10-30


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

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




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