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    Driving risk quantification method based on safety margin

    Driving risk quantification method based on safety margin

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    The invention discloses a safety margin-based driving risk quantification method, which belongs to the technical field of risk quantification, is used for quantifying driving risks, and comprises the following steps of: calculating a relative distance and safety margin between two vehicles, constructing a safety state judgment function, and calculating an instantaneous risk coefficient and collision time. And carrying out driving risk quantification through the reciprocal of the collision time and the instantaneous risk coefficient. According to the method, the lane changing risk is comprehensively evaluated based on the real-time motion information of the vehicle, and then reasonable safety judgment is made; and integrating a time risk coefficient and a space risk coefficient which are respectively derived from collision and safety margin through a fault tree analysis method, carrying out time-space fusion risk assessment quantification so as to judge whether the vehicle is in a safe lane changing state or not, and carrying out early warning control on risks possibly existing in current lane changing. On the basis of evaluating the subjective risk by using the safety margin, the time risk and the space risk are integrated, so that the evaluation index has the ability of evaluating the subjective risk and the objective risk at the same time.

    本发明公开基于安全裕度的行驶风险量化方法，属于风险量化技术领域，用于对行驶风险进行量化，包括计算两辆车之间的相对间距和安全裕度，构建安全状态判断函数，计算瞬时风险系数和碰撞时间，通过碰撞时间的倒数和瞬时风险系数进行行驶风险量化。本发明基于车辆实时运动信息综合评估换道风险，进而做出合理的安全判断；通过故障树分析法整合分别由碰撞和安全裕度推导的时间风险系数和空间风险系数，进行时空融合的风险评定量化，以判断车辆是否处于安全变道状态，并对本次换道可能存在的风险进行预警控制。本发明在使用安全裕度评估主观风险基础上，综合了时间和空间风险，使得评价指标同时具有评价主观风险与客观风险的能力。

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    Titel :

    Driving risk quantification method based on safety margin

    Weitere Titelangaben:

    基于安全裕度的行驶风险量化方法

    Beteiligte:
    QU DAYI (Autor:in) / CHEN YICHENG (Autor:in) / WANG KEDONG (Autor:in) / CHOI SUN-YOUNG (Autor:in) / YANG XIAOXIA (Autor:in) / YANG YUXIANG (Autor:in) / JIA YANFENG (Autor:in)
    Erscheinungsdatum :

    2023-12-15

    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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