The invention relates to a traffic accident discrimination method for an intelligent vehicle road system, and the method comprises the following steps: S1, obtaining traffic flow information in real time based on the road line shape of the intelligent vehicle road system, the traffic flow information comprises the flow and density of traffic flow, taking the density as the x axis and the flow as the y axis, building a two-dimensional coordinate system, and taking the x axis as the x axis and the y axis as the y axis; establishing a macroscopic traffic flow basic diagram model based on the traffic flow information; s2, randomly selecting k initial centroid vectors through a k-means method for the scatter points in the traffic flow fundamental diagram model, carrying out the clustering of the scatter points, carrying out the parameter optimization of a parameter k based on a DDPG algorithm, carrying out the cluster division of each scatter point in the traffic flow fundamental diagram model, and obtaining an optimal output cluster; and S3, judging the cluster of the scattered points in the traffic flow fundamental diagram model in the optimal output cluster, and further judging whether the intelligent vehicle road system at the current moment has a traffic accident or not. Compared with the prior art, the method has the advantages that sudden traffic accidents of IVIS can be dynamically and accurately judged, and then the traffic capacity of road traffic is guaranteed.

    本发明涉及一种智能车路系统的交通事故判别方法,包括如下步骤:S1:基于智能车路系统的道路线形,实时获取交通流信息,交通流信息包括交通流的流量和密度,以密度为x轴,流量为y轴,建立二维坐标系,基于交通流信息建立宏观交通流基本图模型;S2:针对交通流基本图模型中的散点,通过k‑means方法随机选取k个初始质心向量对散点进行聚类,基于DDPG算法对参数k进行参数寻优,对交通流基本图模型中各散点进行簇划分,得到最优输出簇;S3:判断交通流基本图模型中的散点在最优输出簇中所处的簇,进而判别当前时刻下的智能车路系统是否发生交通事故。与现有技术相比,本发明能够动态且精准地判别IVIS的突发性交通事故,进而保障道路交通的通行能力。


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    Title :

    Traffic accident discrimination method of intelligent vehicle road system


    Additional title:

    一种智能车路系统的交通事故判别方法


    Contributors:
    ZHANG WEIDONG (author) / CHEN SHUKANG (author) / QIN SHANXING (author) / YI BOWEN (author) / XIE WEI (author) / HE TONG (author) / HE LUFEI (author) / YANG YUNXIANG (author) / BAI LIN (author) / LU JINHUI (author)

    Publication date :

    2023-06-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung / G06Q Datenverarbeitungssysteme oder -verfahren, besonders angepasst an verwaltungstechnische, geschäftliche, finanzielle oder betriebswirtschaftliche Zwecke, sowie an geschäftsbezogene Überwachungs- oder Voraussagezwecke , DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTING PURPOSES



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