The invention belongs to the technical field of traffic, and particularly relates to an intersection free flow velocity analysis method based on Monte Carlo sampling, which comprises the following steps: firstly, constructing a traffic intersection model, a traffic scene library and a target vehicle database; acquiring historical cycle data of a traffic intersection, extracting traffic scenes and target vehicles from the traffic scene database and the target vehicle database according to the historical cycle data, and importing the traffic scenes and the target vehicles into the traffic intersection model to generate traffic intersection operation data; then traffic intersection operation data in multiple groups of time periods are randomly extracted through Monte Carlo sampling, optimization iteration is carried out on the extracted traffic intersection operation data through construction of an optimization algorithm, and an optimal traffic intersection operation data set is output after preset iteration times are completed; and finally, extracting data in the optimal traffic intersection operation data set to calculate the free flow speed. According to the method, the problems of limitation and inconsistency in the existing free flow velocity analysis method can be solved.

    本发明属于交通技术领域,尤其涉及基于蒙特卡洛抽样的路口自由流速度分析方法,首先构建交通路口模型、交通场景库和目标车辆数据库;然后获取交通路口的历史周期数据,根据历史周期数据从交通场景库和目标车辆数据库中抽取交通场景和目标车辆导入交通路口模型中,生成交通路口运行数据;接着通过蒙特卡洛抽样随机抽取多组时间段内的交通路口运行数据,通过构建优化算法对抽取的交通路口运行数据进行优化迭代,在预设迭代次数完成后,输出最优的交通路口运行数据集合;最后提取最优的交通路口运行数据集合中的数据计算出自由流速度。本发明能够解决现有的对于自由流速度分析的方法中存在局限性和非一致性的问题。


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    Titel :

    Intersection free flow velocity analysis method based on Monte Carlo sampling


    Weitere Titelangaben:

    基于蒙特卡洛抽样的路口自由流速度分析方法


    Beteiligte:
    ZENG WEIJIA (Autor:in) / LI HONGQIAO (Autor:in) / JIANG XIZUO (Autor:in) / ZHENG XUESONG (Autor:in) / LIU XIN (Autor:in) / YUAN JIE (Autor:in) / FENG YIWEN (Autor:in) / LIAO SIWEI (Autor:in) / FLING TSENG (Autor:in) / BI MENGJIAO (Autor:in)

    Erscheinungsdatum :

    2024-02-20


    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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