基于8051单片机交通灯系统的课程设计.doc

图书分类号： 密 级： 毕业论文 基于8051单片机交通灯控制系统的设计 学生学号 学生姓名 学院名称 信电工程学院 专业名称 电子信息工程技术 指导教师 2010年 5月 20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。本系统采用MSC-51系列单片机1和可编程并行I/O接口芯片8255A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801芯片的P1口设置红、绿灯燃亮时间的功能交通灯信号通过P口输出显示时间直接通过8255的P输出；实用性强操作简单。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. The system uses MSC-51 series single-chip ATSC51 and programmable parallel I / O interface chip 8255A-centric device designed to control traffic lights, can be achieved in accordance with the actual traffic flow through the P1 port 8051 chip set red, green fuel Liang function of time; traffic light cycle, the countdown five seconds left when the yellow light flashing warning (traffic lights through the PA output signal indicates the time directly through the PC port output 8255 to double-digits); vehicle alarm; green time traffic flow can be detected through a double-digital display. The system practical, simple and strong extensions. Key words Single-chip detection of traffic lights red light running traffic目 录 1 绪论 1 2 单片机的发展及应用 2 2.1 单片机的发展 2 2.2 单片机的应用 2 3 芯片简介 4 3.1 MCS-51芯片简介 4 3.2 中断系统 5 3.3 时钟电路 5 3.4 8255芯片简介 7 4系统硬件设计 9 4.1交通管理的方案论证 9 4.2.1系统总框图如下 9 4.2.2交通灯硬件线路图(见附录2) 10