车辆闯红灯监控系统.doc

精选范本,供参考！
页脚下载后可删除，如有侵权请告知删除！
精选范本,供参考！
车辆闯红灯监控系统
内容摘要
近来随着科技的飞速开展，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，还应根据具体硬件构造软硬件结合，加以完善。十字路口车水马龙，人来人往，有条不紊，靠的就是交通信号灯的自动指挥系统。本系统采用MSC-51系列单片机AT89C51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89C51芯片的P2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P2口输出，显示时间直接通过74LS245的B口输出至双位数码管〕；车辆闯红灯报警；绿灯时间可检测车流量并可通过双位数码管显示。本系统实用性强、操作简单、扩展功能强。
关键词：单片机，交通灯，闯红灯，检测车流量
精选范本,供参考！
页脚下载后可删除，如有侵权请告知删除！
精选范本,供参考！
Abstract
Recently，with the d rapid evelopment of science and technology, the application of SCM is unceasingly thorough, while traditional control testing technology is updated. In real-time detection and automatic control of single-chip microcomputer application system, often used as a core component, knowledge is not only the MCU, still should according to specific hardware structure, software and hardware, the perfect is the traffic light automatic command system that make the pedestrian crossing transports, bustling, garage, pedestrian humanitarian, orderly driveway，and operate in are many ways to control the traffic light. This system USES MSC - 51 series microcontroller AT89C51 and programmable parallel the I/O devices for the center 8255A interface chip to design the controller, lights, can according to actual traffic through the 8051 chips red, green, P2 mouth setting time function; the depth Traffic light, circulation for 5 seconds remaining countdown yellow lights flashing warning (when the traffic signal output by mouth that time, P2 directly through the mouth B of 74LS245 output to double a digital tube), Traffic police; red Green time can be detected by double bits of cars and digital tube display. This system is practical, simple operation and function expansion.
Keywords: red lights, SCM, traffic, detection
精选范本,供参考！
页脚下载后可删除，如有侵权请告知删除！
精选范本,供参考！
引言
设计目的
当今世界，随着科学技术的开展，人民生活水平不断提高，城市现代化程度不断提高，交通需求和交通量迅速增长，城市交通网络中交通拥挤日益严重，道路运输所带来的交通拥堵、交通事故