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成 绩 评 定 表

学生姓名 专 业 评 语 组长签字： 通信工程 班级学号 课程设计题目 交通灯控制电路 成绩 日期 20 年 月 日

课程设计任务书

学 院 学生姓名 课程设计题目 实践教学要求与任务: 1、绘制具有一定规模、一定复杂程度的电路原理图*.sch。 2、绘制电路原理图相应的双面印刷板图*.pcb。 3、熟悉Protel 99 SE环境。 4、综合应用数字电路知识设计一个交通灯控制器。 信息科学与工程学院 专 业 班级学号 通信工程 交通灯控制电路 工作计划与进度安排: 指导教师： 专业负责人： 学院教学副院长： 201 年 月 日 201 年 月 日 201 年 月 日

目 录

1 课程设计目的 ······················································································ 1 2 总体方案的设计 ··················································································· 1 3 单元电路的设计 ··················································································· 3

3.1 秒脉冲产生电路 ··········································································· 3 3.2 计时器部分电路 ··········································································· 4 3.3 主控电路 ···················································································· 5 3.4 红绿灯显示电路 ··········································································· 5 4 protel软件实现过程 ············································································ 6

4.1 protel 99 SE简介 ·········································································· 6 4.2 protel制作电路图 ········································································· 7

4.2.1 绘制电路的原理图（*.SCH） ·················································· 7 4.2.2 元件封装 ·········································································· 10 4.2.3 原理图的检查 ···································································· 10 4.3 pcb双面印刷版制作 ···································································· 11

4.3.1 创建pcb文件 ···································································· 11 4.3.2 生成网络表 ········································································ 12 4.3.3 设置pcb设计环境 ······························································· 13 4.3.4 布置零件封装位置 ······························································· 13 4.3.5自动布线 ············································································ 15

5 设计体会 ·························································································· 17 6 参考文献 ·························································································· 18