信号交叉口灯组自主优化控制方法  

Signal group self-optimization control for signalized intersection

作　　者：梁子君[1,2] 陈红[1] 丁恒 朱良元 LIANG Zijun;CHEN Hong;DING Heng;ZHU Liangyuan(School of Highway,Chang＇ an University,Xi＇an 710064,China;Anhui Keli Information Industry Co.,Ltd.,Hefei 230088,China;School of Automobile and Traffic Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]长安大学公路学院,陕西西安710064 [2]安徽科力信息产业有限责任公司,安徽合肥230088 [3]合肥工业大学汽车与交通工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2018年第3期395-402,共8页Journal of Hefei University of Technology：Natural Science

基　　金：国家科技支撑计划资助项目(2014BAG03B02);国家自然科学基金资助项目(61304195)

摘　　要：为了进一步提高城市交叉口交通信号控制的灵活性,满足车辆及行人随机到达条件下的精细化控制需求,文章提出一种交叉口逻辑灯组自主优化控制方法。该方法通过建立交通流向排队延误模型,以交叉口各方向交通流排队延误作为优化指标,以交通流对应的信号灯组作为最小控制单元,根据实时检测的各个交通流向的交通流量和排队延误计算结果,自组织优化由不同交通流构成的信号灯组组合相位及其绿灯时间,进而依据绿灯间隔冲突矩阵动态执行信号灯组的实时优化控制。以合肥市一个实际交叉口为例进行试验研究,试验结果表明文中方法的延误时间、停车次数比定时控制和感应控制均有大幅度的降低,可有效提高绿灯的利用率。In order to further improve the flexibility of the traffic signal control of the urban intersection, meeting the demand of the traffic signal fine control under the condition of the random arrival characteristic of the vehicles and pedestrians, a logic signal group self-optimization control method for the signalized intersection is proposed. Through the establishment of the queuing delay model of traffic flow, taking the queuing delay of traffic flow of the intersection as the optimization index and the signal group corresponding to the traffic flow as the minimum control unit, and according to the real-time detection of the volume and the queuing delay calculation of the traffic flow, the combination of the signal group phase which is composed of different traffic flows and its green time is autonomously optimized. Then the real-time optimal control of the signal group is carried out dynamically according to the green interval conflict matrix. The experiment on an actual intersection of Hefei City is conducted and the results show that the average delay and stop of the proposed method is greatly reduced compared with that of the method of the fixed-time control and the actuated control, and the utilization rate of green time can be effectively improved.

关 键 词：交叉口 信号控制 逻辑灯组 自主优化 交通流 排队延误模型 

分 类 号：U491.232[交通运输工程—交通运输规划与管理]