基于801单片的交通智能控制和时间显示系统深刻研究设计书.docVIP

摘 要 近年来，随着我国交通事业的蓬勃发展，以及生活水平的提高，私家车数量猛增，交通流量逐年增加，导致交通道路繁忙，堵车现象严重，特别是十字路口。很显然传统的交通灯控制系统已经表现出明显的缺点：红绿灯时间相对固定，不能伴随车流量的改变而调整红绿灯的显示时间。本论文以城市交通控制为研究对象，结合51单片机应用技术，对智能交通灯控制系统进行了分析和研究。本论文论述了基于8051单片机的交通智能控制和时间显示系统，该系统可以根据检测到的车流量的多少来改变红绿灯的亮灯时间，随时改变绿信比，提高通行率和行车安全，达到智能控制的目的。本系统具有操作简单，成本低，实用性强，采用软硬结合的方法，扩展功能强等特点。 本模拟系统由单片机硬/软件系统，8255并行通用接口，车流量检测系统，两位七段数码管构成的时间显示系统，LED灯亮灯显示系统和复位控制电路等组成，较好的模拟了交通路面的控制指挥情况。 关键词： 8051单片机 交通智能控制系统 车流量检测 ABSTRACT In recent years, with the vigorous development of the transportation industry in our country and the improvement of the living standards,the number of private cars have surged and the traffic volume has increased year by year.This result in busy traffic road and a serious traffic jam,especially the crossroad.It is obvious that the traditional traffic light control system has demnsteated significant disadvantages: traffic light is relatively fixed and can’t adjust the display time of the traffic lights accompanied by changes in traffic volume.This paper uses the urban traffic light system for study,combines with the 51 Microcontroller Unit (MCU) application technology and analyzes intelligent traffic light control system.This paper describes the intelligent traffic control and time display system based on the 8051 MCU.The system can change the traffic lights lighting time according to the number of detected traffic volume , to achieve the purpose of intelligent control . This system has charateristics of simple operation, strong practicability, by using the combined method of hardware and software and extended functionality. The simulation system consists of the MCU hardware / software system , the 8255 general-purpose parallel interface , the traffic volume detection system , two 8 - segment LED and LED lights display system and control circuit of reset circuit .This system simulates the control of traffic road very well. Keyword:8051 MCU the intelligent traffic control system traffic volume detection 目 录 第一章 绪论 1 1.