目 录
1 绪论 ............................................................................................................................................................1
1.1 课程设计的目的 ............................................................................................................................1
1.2 课程设计的任务及要求 ................................................................................................................1
2 工作原理及方案选择 ..............................................................................................................................1
2.1 电路设计的多种方案 ....................................................................................................................1
2.1.1 方案一 ................................................................................................................................2
2.1.2 方案二 ................................................................................................................................2
2.2 电路设计方案的比较 ....................................................................................................................2
3 电路设计及仿真 ..........................................................................................................................................3
3.1 数字电子密码锁的设计原理框图 ................................................................................................3
3.2 各组成部分电路的设计 ................................................................................................................3
3.2.1 密码输入及验证电路的工作原理 ....................................................................................3
3.2.2 密码修改及输出锁定 ........................................................................................................5
3.2.3 计时模块 ............................................................................................................................6
3.2.4 逻辑组合模块 ....................................................................................................................7
3.3 数字电子密码锁的总电路图 ......................................................................................................8
3.4 电路参数的选择及计算 ..............................................................................................................8
4 电路软件仿真 ............................................................................................................................................10
4.1 开锁的仿真 ..................................................................................................................................10
4.2 报警的仿真 ..................................................................................................................................10
4.3 数据测试 ......................................................................................................................................11
5 电路的安装与调试 ..................................................................................................................................14
5.1 焊接电路 ......................................................................................................................................14
5.2 总电路的调试 ..............................................................................................................................15
5.3 调试中遇到的问题及分析与总结 ..............................................................................................15
6 心得体会 ....................................................................................................................................................16
7 附录 ............................................................................................................................................................17
7.1 仪器仪表电子元器件明细清单 ..................................................................................................17
7.2 参考文献 .........................................................................................................................................18
