交通灯单片机控制系统方案.docVIP

毕业设计说明书 GRADUATE DESIGN 设计题目：交通灯单片机控制系统设计 学生姓名： 专业班级： 学 院： 指导教师： 欲得本设计全部资料 QQ229780692 摘　　要 近年来随着科技的飞速发展，单片机的应用不断深入，带动传统控制。在实时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，。十字路口车辆，行人熙攘，车行车道，人行人道，有条不紊。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。本系统采用系列单片机和I/O中心器件来设计交通灯控制器，实现了能根据实际车流量实用性强操作简单。 Abstract In recent years, with the rapid development of science and technology, SCM applications are continually deepening, and promote the traditional control skills updated. In real-time control and the MCU applications, MCU is often used as a core component, assume control of the main tasks. At the same time, but also based on specific functional requirements supported by various external equipment common to complete the mission. At this point, only SCM knowledge is not enough, but also based on specific hardware and software combination of hardware structure, to achieve optimal design.  Crossroads of the shuttle vehicles, pedestrians crowed, companies lanes, people walkways, in an orderly manner. What then oral order to achieve this?Is the traffic lights on the automatic command system. There are many ways to control traffic lights. The system uses PIC16F87X MCU midrange series of PIC16F877 and I / O now commonly used three-state 8 D latch 74 LS373, programmable chips 8255 A parallel interface device designed as the central controller of traffic lights, can be achieved in accordance with B actual traffic flow through the port settings are things the two north-south direction of traffic lights shine time, real-time traffic control to ensure smooth; cycle traffic lights lit, the countdown to two seconds at the corresponding color lights flashing, and then yellow light warning; when emergency vehicles. , To prohibit passage of other vehicles, and other functions. The system practical, simple, strong expansion.  KeyWords：PIC Microcontroller, Traffic lights, Real-time, control Crossing will be amended, Emergency vehicles 目　　录 1引言 1 1.1交通灯的发展 1