文档介绍：漳州师范学院毕业论文(设计) 基于单片机的简易十字路口交通灯设计 Sigle — chip Processor –– based Design for Traffic Light 姓名: 张焰学号: 050801245 系别: 计算机科学与工程系专业: 计算机科学与技术年级: 05 指导教师: 陈建能 2009 年3月 20日 I 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技术日益更新。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硬件结合,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。那么靠什么来实现这井然秩序呢?靠的就是交通信号灯的自动指挥系统。交通信号灯控制方式很多。本系统采用 MCS-51 系列单片机 AT89C52 为中心器件来设计交通灯控制器,实现了能根据实际车流量通过 8051 芯片的 P3口设置红、绿灯燃亮时间的功能;红绿灯循环点亮,倒计时剩 5秒时黄灯闪烁警示(交通灯信号通过 P1口输出,显示时间通过 P0口输出至双位数码管) 。本系统设计周期短、可靠性高、实用性强、操作简单、维护方便、扩展功能强。关键词:单片机;交通灯 Abstract In recent years, with the rapid development of science and technology, the application of SCM is going deep , driv ing the traditional detection techniques to renew day by day. In the real-time examination and in the automatic control monolithic integrated circuit application system, the monolithic integrated circuit often took a core part uses .The monolithic integrated circuit aspect knowledge is only insufficient, but should also act according to the concrete hardware architecture software and hardware union, tobe improved. The intersection vehicles shuttle, the pedestrian is bustling, car dealership traffic lane, person sidewalk, methodical. Then depending on what to realizes this orderly order? the traffic lights on the automatic control system. There are great number kinds of modes to control the traffic lights. The system uses a series of MCS-51 as the center AT89C52 single-chip device designed to control the traffic lights , so as to realize the function of setting red, green light time by8051 chip ’s P3 port ording to the actual traffic flows, lighting the red-light and green-light by turn and lighting the yellow-light to warm while 5 seconds left( outputting the t raffic light signal by P1,outpuing the time by P0 and showing the time on double-digits nixie tube ). Short of the design cycle, high reliability, practical, simple operation, easy maintenance, the expansion of powerful is this system. Key words: SCM; MCU