文档介绍：江阴职业技术学院
毕业论文
课题: 基于单片机AT89C52控制的交通灯设计与仿真
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摘要
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。本设计主要分为五大模块输入控制电路、时钟控制电路、片内外程序切换控制、显示电路。以MSC-51系列单片机IntelAT89C52为中心器件来设计交通灯控制器,实现了AT89C52芯片的P1口设置红、绿灯、黄灯燃亮时间的功能;为了系统稳定可靠采用了74LS14施密特触发器芯片的消抖电路,避免了系统因输入信号抖动产生误操作;显示时间直接通过AT89C52的P3口输出,由NPN驱动LED数码管显示红灯燃亮时间。
Abstract
The intersections vehicle wears shuttle, pedestrian Xi Rang, garage driveway, person's sidewalk, orderly. So depend what to carry out this well arranged order? What to depend is a traffic sign light of automatic conductor system. The control method of the traffic sign light is a lot of. This design is mainly divided into five greatest molds a piece the electric circuit, clock of the importation control a control outside procedure inside the electric circuit, slice to cut over a control and shows electric circuit. Take single slice the machine IntelAT89 C52of the serieses MSC-51s as a center spare part to design transportation light controller, carried out the AT89 C52's P's 1 people's constitution of the chips red, the function in bright time of green light, Huang2 Deng Ran2;For the sake of system stability the credibility adopted a 74 LS14 airtight trigger eliminate of machine chip to tremble electric circuit especially, avoided system because of importation the signal tremble movable property to living a mistake operation; The P 3 people who shows that time directly passes the AT89 C52 output, is driven LED figures a tube by the NPN to show red-light Ran bright time.
目录
摘要 I
Abstract I
目录 II
第一章绪论 1
1
1
2
第二章总体方案 3
3
3
5
第三章硬件设计 6
总体设计与描述 6
交通灯通行模式及行车方向指示 6
主干道单独时间设置功能 8
倒计时计数功能及其实现 8
各功能模块硬件设计及实现 9
第四章软件设计 12
软件总体流程图 12
定时器初始化 12
动态显示 13
设置状态子程序 14
第五章系统调试 15
系统操作说明 15
调试 15
调试心得 19
第六章设计总结 21
致谢 22
参考资料 23
附录 24
Ⅰ原理图 24
Ⅱ原程序 25
第一章绪论