基于单片机的交通灯设计毕业论文

课程设计论文

题 目： 基于单片机的交通灯设计

系 别：姓 名：

指导教师： 通信与信息工程系

孙绪坤 伊学军

摘 要：

近年来随着科技的飞速发展，一个以微电子技术、计算机技术和通信技术为先导的信息革命正在蓬勃发展。计算机技术作为三者之一，怎样与实际应用更有效的结合并发挥其作用。单片机作为计算机技术的一个分支，正在不断的应用到实际生活中，同时带动传统控制检测的更新。在实时检测和自动控制的应用系统中，单片机往往是作为一个核心部件使用，针对具体应用对象的特点,配以其它器件来加以完善。

十字路口车辆穿梭，行人熙攘，车行车道，人行人道，有条不紊。那么靠什么来实现交通的井然秩序呢？靠的是交通信号灯的自动指挥系统，来实现交通的井然有序。交通信号灯控制方式很多。本系统采用美国ATMEL公司生产的单片机AT89S51，以及其它芯片来设计交通灯控制。实现了通过AT89S51芯片的P1口设置红、绿灯点亮的功能，通过AT89S51芯片的RXD、TXD输入、输出设置显示时间。交通灯的点亮采用发光二极管实现，时间的显示采用七段数码管实现。单片机系统采用的直流供电。为了系统稳定可靠，系统内集成了“看门狗”芯片，避免了系统因为死机而停止工作的情况发生。系统实用性强、操作简单、扩展性好。

英文摘要

In recent years, with the rapid development of science and technology, a micro electronic technology, computer technology and communication technology as the forerunner of the information revolution is booming. Computer technology, as one of the three, how to combine with practical application more effectively and play its role. Single chip microcomputer as a branch of computer technology is constantly applied to the real life, while driving the traditional control detection update. Single chip microcomputer as a branch of computer technology is constantly applied to the real life, while driving the traditional control detection update. In real-time detection and automatic control of the application system, the microcontroller is often used as a core component, according to the specific characteristics of the application object, with other devices to improve.

Crossroads shuttle vehicles, pedestrians bustling, car lanes, walkways, everything in good order and well arranged. So what to achieve traffic in order? Rely on the automatic command system of traffic signal lamp, traffic in order to achieve. Many traffic lights control. The system uses the United States ATMEL company AT89S51 microcontroller, as well as other chips to design traffic light control. Achieved through the AT89S51 chip P1 port set red, green light function, through the AT89S51 chip RXD, TXD input, output display time. The light of the traffic light is realized by the light emitting diode, and the display of the time is realized by seven sections of digital tubes. DC power supply used in single chip microcomputer system. In order to ensure the stability and reliability of the system, the system integrates the watchdog chip, to avoid the system because of the crash and stop working. The system has strong practicability, simple operation and good expansibility.