The invention discloses a pedestrian crossing collision risk early warning method and system based on holographic sensing. The method comprises the following steps of collecting data of pedestrians and vehicles in a non-signal control road section based on holographic sensing equipment; constructing a speed prediction model by using an LSTM algorithm to predict trajectories of pedestrians and vehicles, determining a risk analysis range, dividing the risk analysis range into N sub-regions, calculating upper and lower limits of the speed of each sub-region by using an empirical cumulative distribution function, and determining a potential risk region corresponding to each sub-region; the shape of the potential risk area is assumed to be a rectangle with certain length and width; determining a time difference TDTC between the potential risk area and the potential conflict point of the pedestrian and the vehicle; determining a threshold value of the TDTC by drawing a cumulative frequency curve of the TDTC; and risk types are divided according to comparison conditions of detected values and threshold values, and real-time early warning is carried out. According to the invention, the accuracy of the pedestrian crossing early warning opportunity and the early warning accuracy are improved.

    本发明公开了一种基于全息感知的行人过街碰撞风险预警方法及系统,该方法包括以下步骤:基于全息感知设备采集无信号控制路段中行人与车辆的数据;运用LSTM算法构建速度的预测模型以预测行人与车辆的轨迹,并确定风险分析范围,将风险分析范围划分为N个子区域,运用经验累积分布函数计算每个子区域的速度的上下限,确定每个子区域对应的潜在风险区域;潜在风险区域的形状假定为具有一定长度和宽度的矩形;确定行人与车辆的潜在风险区域与潜在冲突点重合的时间差TDTC;通过绘制TDTC的累积频率曲线确定TDTC的阈值取值;根据所检测出的值与阈值的对比情况划分风险类型,并进行实时预警。本发明提高了行人过街预警时机的精准性与预警的准确性。


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    Titel :

    Pedestrian crossing collision risk early warning method and system based on holographic perception


    Weitere Titelangaben:

    一种基于全息感知的行人过街碰撞风险预警方法及系统


    Beteiligte:
    ZHANG HUI (Autor:in) / LIU JIALI (Autor:in) / DING NAIKAN (Autor:in) / WAN ZHUANG (Autor:in)

    Erscheinungsdatum :

    2023-07-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06V



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