陕西理工学院毕业论文
题 目 智能密码锁的设计 ___________ 学生姓名 李倩宋宇 学号_____1213014126______ 所在学院 物理与电信工程学院_____________________
专业班级 电子信息工程__________________
指导教师 梁芳_______________________ 完成地点 物理与电信工程实验_______________
2016 年 6 月 3 日
陕西理工学院毕业论文
智能密码锁的设计
李倩宋宇
（陕理工物理与电信工程学院 电子信息工程专业电子1205班，陕西汉中723000）
指导教师：梁芳
[摘要] 本文论述了基于AT89C52单片机的红外遥控电子密码锁系统设计。给出了具体的实现方案。该条件在
分析了单片机的串行通信工作原理的基础上，同时也设计了红外发送接收器电路，以及电子密码锁的电路设计等。该设计可以实现密码设定、密码显示、密码修改、本机开锁、远程遥控开锁、密码输入错误报警等等。红外发送器和红外接收器的电路以及电子密码锁设计电路和应用方法.
[关键词] AT89C52 ; LCD1602 ; 电子密码锁.
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陕西理工学院毕业论文
Design of the intelligent electronic cipher lock
Li Qian Song Yu
(Grade12,Class5, Major electronics and information engineering,Electronics and information engineering Dept.,Shanxi University of Technology,Hanzhong 723000，Shaanxi)
Tutor: Liang Fang
Abstract This dissertation is about concrete design of the hardware and program steps of Infrared ray test instrument’
s design and realization based on AT89C51. This design can achieve the password selection; password to modify the password of the machine lock, remote keyless entry, the password is incorrect alarm function. The paper gives the working principle of the single-chip serial communication, infrared transmitter and infrared receiver circuit, and the typical design of the circuit of the electronic lock application methods.
Key words AT89C52; LCD1602 ; Electronic password lock .
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陕西理工学院毕业论文
目录
1 绪论 ...................................................................................................................... 1
1.1 课题背景和意义 ....................................................................................... 1 1.2 电子密码锁未来的发展走势 ........................................................... 1
2 总体设计方案的确定 ...................................................................................... 2
2.1 本次密码锁的具体功能实现要求 ........................................................... 2 2. 2 总体设计方案选定 ................................................................................... 2
3 系统硬件设计 ..................................................................................................... 3
3.1 设计原理 ................................................................................................... 3 3. 2 单片机AT89C52简介 ............................................................................. 3 3.3 AT24C02存储芯片 .................................................................................... 6 3.4 LCD显示模块 ............................................................................................ 7 3.5 键盘设计 ................................................................................................. 10 3. 6 声音提示模块 ......................................................................................... 11 3. 7 继电器控制模块 ..................................................................................... 12 3. 8 红外接收模块 ......................................................................................... 13
4 系统软件设计 ................................................................................................... 15
4.1主程序模块 ................................................................................................ 15 4.2 键盘扫描子程序 ....................................................................................... 16 4.4 开锁子程序 ............................................................................................... 18 4. 5 软件调试 ................................................................................................... 18
5 系统制作及调试 ............................................................................................... 22
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陕西理工学院毕业论文
5.1焊接注意事项 ............................................................................................ 22
致谢......................................................................................................................... 24 参考文献 ................................................................................................................ 25 附录A 外文翻译原文 ....................................................................................... 26 附录B 中文翻译 ................................................................................................ 31 附录C 原理图 .................................................................................................... 36 附录D 仿真图 ...................................................................................................... 37 附录E 元器件清单 .............................................................................................. 38 附录F 电子密码锁程序源代码 ...................................................................... 39
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