智能交通灯.docxVIP

基于FPGA的交通路口红绿灯控制系统 摘要 随着当今社会经济的不断发展以及人民生活水平的不断提高，城市汽车数量特别是私家车的数量急剧增长，全社会对交通运输系统的需求日益增加，城市交通问题越来越吸引人们的关注，城市交通拥堵问题成为制约城市经济发展的瓶颈。传统意义上的交通控制系统采取的是定时的控制系统，这种控制方法不能满足交通状况实时变化的要求，会造成单方向交通拥堵的问题，致使单方向的交通延误过大。采用先进的车流量检测技术、先进的控制策略等高新技术开发的智能交通系统就可以大幅度提高交通道路的运行效率，成为解决交通拥挤问题最为有效、最为经济的办法之一。针对现实中越来越频繁、越来越严重的城市交通拥堵现象，本文提出了一种城市十字路口交通信号灯控制与 FPGA 实现的新方法。为解决各车道车流量不均衡所造成的十字路口交通资源浪费的问题，所设计的智能交通控制系统利用对相向车道采用不同步的红绿灯信号控制的方法，能够减少交通资源的浪费，大幅度提高十字路口的车辆运行效率。本论文的主要工作有：设计基于 PFGA非同步智能交通控制系统的整体架构，利用硬件描述语言 VHDL 编写系统控制程序；通过 EDA 软件 Quartus II 对所编制的程序进行综合、仿真。 关键词 FPGA 智能控制 无线收/发模块 EP1C6Q240C8 车辆通行效率Traffic Lights Control System for Crossroads Based on FPGA ABSTRACTWith the continuing economic development of society and peoples living standards, along with the increase of the number of private cars, the whole community has the growing demand for transportation. The city’s traffic problem has drawn increasing attention. The urban traffic jams have become the bottleneck of restricting city economic development. The traditional traffic control systems use the timing control system, and this control method can not meet the requirement of real-time traffic conditions, so it often leads to a serious problem of one-way traffic, resulting in a single direction of too large traffic delays. The use of advanced traffic flow detection technology, advanced control strategies for high-tech development of intelligent transportation systems can significantly improve the efficiency of road transportation, and the solution to congestion problems is one of the most economical way.Aiming at the more and more frequent, more and more serious city traffic congestion, this paper proposes a new method of traffic light control and FPGA implementation for city crossroads. In order to solve the problem of crossroads traffic resource wastage caused by the unbalanced traffic flow in all the lanes, the asynchronous traffic signal control method in opposite lanes is used in the designed intelligent traffic control system wh