单片机控制交通灯 毕业设计.doc

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MSC-51系列单片机ATSC51和可编程并行I/O接口芯片80C51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P1口设置红、绿灯燃亮时间的功能；红绿灯循环点亮，倒计时剩秒时黄灯闪烁警示。本系统实用性强、操作简单、扩展功能强。 关键词：交通灯 单片机 MSC-51 计时 ABSTRACT Years with the rapid development of science and technology, 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. Crossroads shuttle vehicles, pedestrians bustling, car dealers Drive, people walkways, orderly. Then rely on to achieve the discipline of the order then? Rely on the automatic traffic light is the chain of command. Many ways to control traffic lights. In this system, MSC-51 Series MCU ATSC51 and programmable parallel I / O interface chip 80C51-centered design of traffic signal controller device to realize the actual traffic volume by 8051 according to the P1 port chip set of red, green time kindle function; traffic light cycle of light, yellow light flashes when the countdown seconds left warning. The system practical, simple, powerful extensions Keywords: traffic light SCM MSC-51 timing TOC \o 1-3 \h \u HYPERLINK \l _Toc27114 摘要 PAGEREF _Toc27114 1 HYPERLINK \l _Toc6693 ABSTRACT PAGEREF _Toc6693 2 HYPERLINK \l _Toc13967 第一章单片机控制交通灯的背景 PAGEREF _Toc13967 5 HYPERLINK \l _Toc3508 1.1交通灯的 PAGEREF _Toc3508 5 HYPERLINK \l _Toc10247 1.1.1交通灯的历史 PAGEREF _Toc10247 5 HYPERLINK \l _Toc19190 1.1.2交通灯的出现 PAGEREF _Toc19190 5 HYPERLINK \l _Toc22753 1.2单片机简介 PAGEREF _Toc22753 6 HYPERLINK \l _Toc9643 1.2.1单片机的发展历程 PAGEREF _Toc9643 6 HYPERLINK \l _Toc2973 1.2.2单片机的特点 PAGEREF _Toc2973 6