交通信号灯控制系统设计论文.doc

东华理工大学长江学院 毕业设计(论文) 题 目 交通信号灯控制系统设计 英文题目Traffic signal control system design 二零零九年五月 三十一日 摘 要 近年来随着科技的飞速发展，单片机的应用正在不断深入，同时带动传统控制检测。在实时检测和自动控制的单片机应用系统中，单片机往往作为一个核心部件来使用，仅单片机方面知识是不够的，还应根据具体硬件结构软件结合，加以完善。 十字路口车辆，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现这井然秩序呢？靠的是交通信号灯的自动指挥系统。交通信号灯控制方式很多。 在正常情况下,该系统实现交通灯定时控制.根据定时时间进行东西和南北方向的切换.交通灯在红、绿灯交替点亮中,用两个数码管显示点亮的灯还能持续的时间.使LED显示器进行倒计时工作并与状态灯保持同步,可在保证交通安全的前提下最大限度的提高交通效率. 关键词：交通控制; 单片机; LED ABSTRACT In recent years, with the rapid development of science and technology, the application of SCM is at the same time, traditional detection techniques to control the growing update. In real-time detection and automatic control system of single-chip applications, often as a single-chip core component to use only single-chip is not enough knowledge, but also the structure of hardware and software in accordance with the specific combination of hardware, to be improved. Crossroads shuttle vehicles, pedestrians bustling, car lanes, the pavement and orderly. So to achieve the orderly what order? Is the traffic lights on the automatic control system. Many traffic lights control. Small single-chip traffic control system is the application of traffic control in the more advanced control systems. The realization of the method is, first of all, the object of controlling the situation at the crossroads of vehicles to optimize a given program, and then increase the number of single-chip circuitry to achieve. This design mostly uses AT89C51 MCU through the I / O ports to control traffic lights and LED time display, in order to achieve the purpose of traffic control. Under normal circumstances, the realization of the system to control traffic lights from time to time. In accordance with time for things from time to time and switch the direction of the North and the South. Traffic lights in the red and green light in the turn, with two lit LED lights can display the duration of . so that the countdown LED display for work and to keep pace wit