摘要
针对城市主干道车辆过载问题,一定程度上造成主干道通行恶化,对道路功能发挥产生恶性影响的问题,设计一种有效的城市主干道车辆交通流量自动管控系统。硬件部分选用自上向下的方法,选用可编程逻辑器件EPM7032为控制器,利用可编程连线阵列将所有LAB连接在一起,在PIA上布线,并将器件中的信号连接至相应目的地。软件方面通过群优化变异方法,将适合值当成主干道交通管控节点的当前值。对出现事故路段上游交通流量进行分流处理,使主干道路网达到均衡,保证城市主干道的顺畅运行。实验结果表明,所设计系统在主干道出现交通事故与交通阻塞的情况下,通行能力明显更好,车均延误减少,饱和度降低,能够很好地完成对主干道车辆交通流的管控。
Aiming at the problem of serious vehicle overload on urban arterial roads,to a certain extent,the problem of the negative impact on the function of roads,an effective automatic control system for urban vehicle traffic flow was designed.The hardware part adopts the top-down method,and the programmable logic device EPM7032 is selected as the controller.All programmable LABs are used to connect all LABs together,route them on the PIA,and connect the signals in the device to the corresponding destinations.In terms of software,through the group optimization mutation method,the suitable value is regarded as the current value of the main road traffic control node.The traffic flow upstream of the road is divided where the accident occurred,so that the trunk road network is balanced,and the smooth operation of the main road in the city is guaranteed.The experimental results show that the designed system can significantly improve the traffic capacity,reduce the average delay of vehicles,and reduce the saturation in the case of traffic accidents and traffic jams on the main road.It can complete the control of the vehicle traffic flow on the main road.
作者
雷晓平
王敏
马磊
LEI Xiaoping;WANG Min;MA Lei(Yangling Vocational§Technical College,Yangling Shanxi 712100,China;Jiangxi provincial Expressway Investment Group Co.Ltd,Nanchang 330000,China)
出处
《自动化与仪器仪表》
2020年第4期171-174,共4页
Automation & Instrumentation
基金
宝鸡市交通运输局项目:关中环线眉县至岐山公路交通调查分析研究(No.BG2019-YB43)
关键词
城市主干道
车辆
交通流量
自动管控
系统
urban main road
vehicle
traffic flow
automatic control
system
作者简介
雷晓平(1980-),男,陕西合阳人,硕士,讲师,主要从事公路工程施工及检测的研究与教学工作。
