毕业设计（论文）基于单片机的多功能交通灯系统设计.docVIP

毕业设计（论文）说明书 设计（论文）题目 基于单片机的多功能交通灯系统设计 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。 随着汽车总量的不断增加，城市交通拥挤和堵塞现象时常出现，因而城市交通指挥变得重要。一套性能齐全、安全有效的交通灯控制系统对一个城市来说必不可少。 本系统采用MSC-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AT89S52芯片的P2口设置交通灯亮的功能；采用6个发光二极管来模拟各路交通信号红绿黄三种灯循环点亮，2个LED七段数码管以倒计时的方式显示允许通行或禁止通行的信号灯剩余的时间，停10S，准备3S，之后通行10S。另外，本系统还采用1602液晶显示器和580c喇叭SPEAKER实现在交通灯交替点亮的同时液晶显示英文字符和播放背景音乐的功能，液晶以滚动方式随着红绿灯的交替点亮循环显示相应的提示标识，实用性强、操作简单、扩展功能强。 本设计采用的程序编写语言为汇编语言，简单又便于阅读。编写程序的原则是：1.满足设计的要求。2.尽量采用最好，最有效的算法。3.编写时应尽量用最简洁的语言。编写好源程序后，采用Keil uVision2软件对其进行编译，使其生成单片机可以识别的.hex文件，再把此文件导入单片机AT89S52中即可。 关键词：单片机交通灯播放音乐液晶显示 abstract With the rapid development of science and technology in recent years, SCM applications are deepening at the same time promote more traditional control detection update. In real-time detection and control of the microcomputer application system, the microcontroller is often used as a core component, only the SCM knowledge is inadequate and should be based on specific hardware architecture hardware and software, to be improved. With the cars total growing urban traffic congestion and jams frequently occur, and thus become important urban traffic control. Complete set of performance, safety and effective traffic light control system is essential for a city. In this system, MSC-51 Series MCU AT89S52 to design the traffic signal controller, realized according to the actual traffic flow through the port P2 AT89S52 chip set of traffic lights function; with 6 a light-emitting diodes to simulate various quarters red, green and yellow light traffic signal cycle of light, two seven-segment LED digital tube with a countdown displayed to allow access or prohibit the passage of the signal remaining time, stop 10S, ready 3S, after the passage 10S. In addition, the system also uses liquid crystal display and 580c speakers SPEAKER 1602 to achieve the turn at the traffic light