The invention discloses an early warning method for highway congestion, and the method comprises the steps: 1, obtaining the traffic flow data of a highway section L in time W, and building a matrix;2, establishing a linear discriminant function Z for the matrix S based on a Fisher discriminant analysis method, setting the class A as traffic smoothness and the class B as congestion, respectivelysubstituting known historical traffic flow data corresponding to the class A and class B results into Z to obtain ZA and ZB, and calculating the average number ZAB of ZA and ZB; 3, when the distance Lbetween the vehicle and the road section is Q, acquiring traffic flow data of the current highway section L in the first two minutes, establishing matrix Sv, and substituting the matrix Sv into the linear discrimination function Z to obtain a result zv, wherein when Zv is less than or equal to ZAB, the current expressway section L is smooth in traffic, and when Zv is greater than ZAB, a driver isinformed that the current expressway section L is blocked. According to the invention, the blocking condition of the section in front of the vehicle can be estimated, and the driver can convenientlyreplace the travel in advance.

    本发明公开了一种高速公路堵塞的预警方法,1.获取高速公路路段L在时间W内的交通流数据,建立矩阵;2.基于Fisher判别分析法对矩阵S建立线性判别函数Z,设定A类为交通流畅通,B类为发生堵塞,分别将与A类和B类结果对应的已知历史交通流数据带入Z中,得到Z和Z,计算Z和Z的平均数Z;3.当车辆距离路段L为距离Q时,获取目前高速公路路段L在前两分钟内的交通流数据,建立矩阵S,将矩阵S带入线性判别函数Z中,得到结果z,当Z≤Z,则当前高速公路路段L交通流畅通,当Z>Z,则告知司机当前高速公路路段L存在堵塞,能够对车辆前方路段的堵塞情况进行预估,方便司机提前更换行程。


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    Title :

    Early warning method for highway congestion


    Additional title:

    一种高速公路堵塞的预警方法


    Contributors:
    ZHANG MIN (author) / ZHANG CHI (author) / ZHANG HONG (author) / REN XIAOWEI (author) / FENG YIWEI (author) / XU TIAN (author) / ZHANG KUNLUN (author) / LYU MAO (author)

    Publication date :

    2020-08-18


    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



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