智能交通系统(毕业论文).doc

摘要
随着现代社会的快速发展,各种各样的交通工具成为了代步工具,特别是近年来小汽车的普及,加重了现有交通资源的压力。优化交通网络可以缓解交通压力,但是投入成本较高,还要受很多环境因素的影响,对于道路交通的控制方法和控制技术的优化显得更容易实现,而交通灯是整个交通网的指挥系统。
本文研究的是以STC89C52RC单片机为控制器的智能交通灯控制系统,该系统在基础交通灯系统的基础上增加了如下功能:(1)自动实时监测车流量并将传回的数据进行处理,动态分配不同方向的通车时间,最大程度优化交通道路资源;(2)紧急情况强制转换通车;(3)根据车流量自动进入夜间模式等功能。本设计进行软硬件整体设计,并利用PROTEUS软件进行软件仿真,并进行了硬件板卡实现。
关键词:智能交通灯;STC89C52;智能控制;74HC573
ABSTRACT
With the rapid developments of modern society, all kinds of traffic tools has e the transport, especially the popularity of the car in recent years, which increased the pressure of the existing transport resources, Although optimizing the works can ease traffic pressure, the cost is higher,and which is influenced by many environment factors the control methods and control technologies are more easy to implement, and the traffic light is the mand system for entire work.
This paper has researched the controller of the intelligent traffic light control system based on STC89C52RC single-chip system of traffic lights on based system increased automatic real-time monitoring on the basis of the number of cars and will be back to the data, the dynamic distribution of different directions of traffic time, maximum optimization of traffic resources; Emergency coercion; According to the number of cars and the time, the control system can enter the night mode automatically. This design carries on the overall design flow of software and hardware, using the PROTEUS software for simulation, and the circuit board was implemented at last.
KeyWords:Intelligent traffic lights; STC89C52; Intelligent control; 74 hc573
目录

第一章绪论 1
智能交通系统发展史 1
智能交通系统的发展现状 1
智能交通灯研究的意义 2
第二章系统总体方案设计 3
通行状态设计 3
交通灯系统的功能设计 4
系统总体框图 5
第三章硬件电路设计 6
STC89C52RC单片机简介 6
STC89C52RC主要特性 6
STC89C52RC单片机的工作模式 7
STC89C52RC引脚功能说明 7
各模块电路设计 12
时钟电路 12
复位电路 13
强制转换电路 13
车流量检测电路 13
数码管显示电路 14
红绿灯显示电路 14
第四章软件设计 16
程序主体设