东华理工大学毕业设计（论文） 1毕业设计（论文）题目： 交通灯系统的设计English Title：The design of the traffic light system学生姓名 ：XXX专 业 ：自动化学 号 : XXXXXX指导教师 : XXX2012 年 5 月 30 日东华理工大学毕业设计（论文） 摘要2摘要交通控制系统是近现代社会随着物流、出行等交通发展产生的一套独特的 公共管理系统。要保证高效安全的交通秩序，除了制定一系列的交通规则，还 必须通过一定的科技手段加以实现。本文在对目前交通控制进行深入分析的基 础上，运用检测传感、实时调整智能化控制的实现技术，将传感器监测、实时 调整车辆通行与单片机控制作用相结合，提出了基于单片机的交通控制系统设 计方案。8051 单片机的交通灯控制系统由 8051 单片机、交通灯显示、LED 倒计时、 违规检测、紧急处理、盲人提示音、看门狗等模块组成。系统除基本交通灯功 能外，还具有盲人提示音、可倒计时显示、急车强行通过、交通常状况判别及 处理等相关功能。理论证明该系统能够简单、经济、有效地疏导交通，提高交 通路口的通行能力。 本设计主要做了如下几方面工作：一是确定系统交通控制的总体设计，包 括十字路口具体禁行方案设计以及系统应拥有的各项功能，二是进行传感器的 硬件电路、显示电路等的设计和基本功能要求。三是进行软件系统的设计，对 于本系统，在此采用单片机汇编语言编写，总体上完成了软件的编写。关键词关键词:违规检测，倒计时，盲人提示音东华理工大学毕业设计（论文） Abstract3AbstractTraffic control system is a modern society with logistics, travel etc of traffic development a unique set of public management system . To ensure the effective safety traffic, except for a series of traffic rules, still must through certain technological means to achieve. Based on analysis of traffic control, based on real-time detection sensor, adjust the implementation technology of intelligent control, real-time monitoring, sensor adjust vehicles time algorithm and single-chip microcomputer control function is proposed, which combines the traffic control system based on single chip design scheme.The 8051 microcontroller control system consists of the traffic lights display, 8051 monolithic integrated circuits, and LED the countdown, violate compasses detection, emergency treatment, the blind prompt, the watchdog as modules. In addition to the basic traffic function outside, still have the blind tone, can pass the countdown display,car that forced through traffic, transportation and processing abnormal discriminant functions. Theory shows that the system can simple, economic and effective relieves traffic,improve the crossroads capacity.This design mainly do the following aspects: one is the work of the traffic control system design, including the crossroads, specific design and system should be restricted with each function, two is that the sensor, the hardware circuit design of the circuit and the basic function and requirement: Three is software system design, this system for monolithic assembly language, overall finished on the writing of the Software.Keywords: an illegal detection, countdown,blind tone东华理工大学毕业设计（论文） 目录4目录绪论.5 选题背景与意义.6 国内外交通灯系统研究现状.7 本次设计的优缺点.7 第一章 系统总体设计.9 1.1 系统总体设计思路.9 1.2 系统设计方案论证.9 1.2.1 显示界面方案.9 1.2.2 输入方案.10 1.2.3 看门狗保护方案.10 1.2.4 系统方案设计.10 第二章 系统硬件电路的设计.12 2.1 系统硬件总电路构成及原理.12 2.1.1 系统硬件电路构成.12 2.1.2 系统工作原理.12 2.2 单片机的选择.12 2.2.1 单片机的概述.12 2.2.2 AT89C52 芯片的简介.13 2.2.4 AT89C52 芯片最小系统.13 2.3 电源电路模块.