The invention discloses a real-time trunk line adaptive signal timing optimization method based on an improved grey wolf algorithm, and the method comprises the steps: collecting the road geographic information of a trunk line, intersection channelization and phase information, the average vehicle speed information between intersections, and the maximum period and minimum green light duration information of the intersections, and building a traffic simulation environment; collecting traffic flow data of each entrance of the trunk line at different time periods, generating trunk line traffic flow conditions according to uniform discrete distribution, and inputting the trunk line traffic flow conditions into a database; selecting a crowd-sourcing optimization algorithm and a grey wolf algorithm to optimize an optimal timing scheme of the trunk line under different traffic flow conditions; the distribution variance of the current population and the distribution variance of the initial population are used for controlling the updating step length of the grey wolf population; writing the traffic flow data and the corresponding trunk signal timing schemes into a timing scheme database in pairs; and collecting current traffic flow data of the trunk line, and outputting the timing scheme corresponding to the traffic flow data with the minimum Euclidean distance from the current traffic flow in the database to the signal control machine in real time.

    本发明公开了一种基于改进灰狼算法的实时干线自适应信号配时优化方法,其过程包括:采集干线的道路地理信息、交叉口渠化及相位信息、交叉口间的平均车速信息、交叉口的最大周期和最小绿灯时长信息,搭建交通仿真环境;采集干线各进道口在不同时段下的车流量数据,根据均匀离散分布生成干线车流情况,并输入数据库;选择群智优化算法灰狼算法优化干线在不同车流情况下的最优配时方案;用当前种群的分布方差与初始种群的分布方差控制灰狼种群的更新步长;将车流量数据与对应的干线信号配时方案成对写入配时方案数据库内;采集干线当前的车流量数据,将数据库中与当前车流量欧式距离最小的车流量数据对应的配时方案实时输出给信控机。


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    Title :

    Real-time trunk line adaptive signal timing optimization method based on improved grey wolf algorithm


    Additional title:

    一种基于改进灰狼算法的实时干线自适应信号配时优化方法


    Contributors:
    ZHAO ZUTENG (author) / LIU YUTIAN (author) / SONG FENGKUN (author) / ZHANG FANGWEI (author) / ZHANG XINGLIN (author) / SUN ZHENGLIANG (author)

    Publication date :

    2023-10-31


    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 / G06N COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS , Rechnersysteme, basierend auf spezifischen Rechenmodellen