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简易数字电路交通灯设计
2022-06-26 12:32:00 【讨厌水的鱼】

1.课程设计要求
1.1 题目
基于数字电路的交通灯控制器
1.2 设计任务
1.在十字路口,由A(东西方向)、B(南北方向)两条交叉的道路组成;
2.A街道绿灯亮,同时B街道红灯亮,保持10秒;
3.10秒后A街道绿灯熄灭,黄灯亮,保持3秒;
4.3秒后A街道黄灯与B街道红灯同时熄灭,继而A街道红灯亮,B街道绿灯亮,并保持10秒;
5.10秒后B街道绿灯熄灭,黄灯亮,保持3秒;
6.3秒后A街道红灯与B街道黄灯同时熄灭,继而A街道绿灯与B街道红灯亮,依照上述过程如此循环。
2.部分内容
2.1 设计思路

2.2 秒脉冲的产生
采用多谐振荡电路,选用的是555定时器生成。
2.3 计数模块
交通灯的延时计数模块选用的是74LS191同步十六进制加法计数器。
2.4 状态切换
状态切换采用同步十进制加法计数器74LS160。
2.5 交通灯显示
采用与非门逻辑电路判断状态,控制交通灯的显示;
具体采用的是与门74LS08芯片和非门74LS04芯片,将状态转化控制器74LS160输出的信号进行运算后由交通灯进行显示。

3.Multisim仿真效果

说明:
1.这是我大一时做的数电课程作业,要清理电脑资料了,简单整理一下;
2.现在看来其中有很多不足之处,比如显示数码管只用了1位,用的十六进制显示,显示用倒计时更好一些等等;
3.由于当时水平有限,难免会有很多错误和不足,所以本设计仅供参考;
课程论文和Multisim仿真电路可以在CSDN上下载;
CSDN下载链接:https://download.csdn.net/download/xiaopikadi/10886099
没有积分的也可以关注我的WeiXin公众号:阿伟玩电子,在后台消息页面回复 交通灯 获取全部资料;
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