The invention discloses a single-point signalized intersection optimization timing method based on Fisher ordered clustering. The method comprises the steps of: extracting historical traffic flow data, and carrying out dimension reduction processing, and obtaining a dimension-reduced historical traffic flow matrix; taking a row vector of the dimension-reduced historical traffic flow matrix as a sample, and segmenting the sample by adopting the Fisher ordered clustering to obtain an optimal segmentation number and a segmentation mode corresponding to the optimal segmentation number, and taking the optimal segmentation number and the segmentation mode as an optimal control time period; and carrying out an optimal timing simulation experiment on the optimal control time period to obtain an optimal timing scheme. According to the method, the traffic efficiency of an intersection can be improved under the condition of high saturation of the intersection; The method overcomes the high requirements of an existing adaptive control method for infrastructures such as hardware and algorithms, and has the advantages of low cost and high reliability.
本发明公开了一种基于Fisher有序聚类的单点信号交叉口优化配时方法,所述方法包括:提取历史交通流量数据并进行降维处理,得到降维后的历史交通流量矩阵;以降维后的历史交通流量矩阵的行向量为样品,采用Fisher有序聚类对样品进行分割,得到最优分段数及其对应的分段方式,作为最优控制时段;对最优控制时段进行优化配时仿真实验,得出优化配时方案。本发明的方法在交叉口高饱和度下有助于提高交叉口通行效率;并克服了目前自适应控制方法对硬件、算法等基础设施的高要求,具有成本低、可靠性高的特点。
Single-point signalized intersection optimization timing method based on Fisher ordered clustering
一种基于Fisher有序聚类的单点信号交叉口优化配时方法
2021-06-25
Patent
Electronic Resource
Chinese
Lane distribution method for single-point signalized intersection
European Patent Office | 2020
|Study on Bicycle Signal Timing Algorithm at Signalized Intersection
Trans Tech Publications | 2011
|METHOD FOR SIGNAL TIMING IN A FOUR-LEGGED ISOLATED SIGNALIZED INTERSECTION
European Patent Office | 2021
|Two-Level Signalized Intersection
Online Contents | 2008
|Prioritizing Signalized Intersection Operational Deficiencies
British Library Conference Proceedings | 1992
|