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摘要： 随着时代的进步，人们对隐私以及安全性越来越重视。如果使用以前老式的机械锁，人们需要随身配备多把钥匙,使用起来比较繁琐,而且一旦钥匙不小心丢失后会变得非常的不安全。为满足人们对锁的安全性需求，电子密码锁逐渐的被研究出来，并广泛的应用于各行各业。与从前的机械锁相比，电子密码锁具备很多的特殊优点，比方说：高安全性、功耗低、低成本、容易掌握、防盗报警。39213
- 上一篇：STC89C52单片机的无线温湿度采集系统设计+电路图
- 下一篇：STC89C52单片机的醉驾检测系统设计+电路图+代码
本系统主要由STC89C52单片机、红外遥控部分、矩阵键盘部分、警报部分、LCD1602显示模块以及射频模块等组成，本系统具有设置、修改用户密码、重置初始密码、输错密码超过规定次数报警与锁定系统、添加以及删除射频卡等功能。矩阵键盘可以被红外遥控器取代，从而完成远距离开锁以及关锁操作。
毕业论文关键词：STC89C52 LCD1602 射频密码锁 矩阵键盘
Radio frequency lock based on Single Chip Micyoco
Abstract： With the development of the times, privacy and security are more and more attented by people. If you use the traditional mechanical lock before, human need to carry lots of keys, be more complicated, and it will become very unsafe once the key is not accidentally lost. To meet the security people’s needs, electronic locks out gradually been studied and widely used in all walks of life. Compared with the old mechanical locks, electronic locks has its unique advantages, such as: high security, low power, low cost, easy to operate, burglar alarm.
The system made up of STC89C52 MCU, infrared modules, matrix keyboard module, alarm module, LCD1602 display modules and RF modules and other components, the system has many functions including set up, modify user password, reset the initial password, enter the wrong password more than a predetermined number of times the alarm and locking systems add and delete RF card. Matrix keyboard can be instead of the infrared remote control, realize remote unlocking and shut.
Keywords: STC89C51 LCD1602 RF password lock keyboard
目录
1 绪论 4
1.1 引言 4
1.2 本设计所要实现的目标 4
2 总体设计思想 5
3 系统硬件设计 5
3.1 STC89C52单片机简介 6
3.1.1 主要特性 6
3.1.2 管脚功能说明 7
3.1.3 单片机最小系统 8
3.1.4 中断说明 9
3.2 显示模块 10
3.2.1 1602液晶接口控制说明 10
3.2.2 1602时序说明 11
3.2.3 1602液晶字符库 12
3.3 矩阵键盘 13
3.4 射频模块 14
3.5 报警模块 15
4 系统软件设计 16
4.1 主程序 16
4.2 键盘程序 16
4.3 设置密码程序 18
5 系统制作与调试 19
5.1 原器件的选取与购买 19
5.2 硬件焊接 19
5.3 硬件电路调试 20
6 总结 20
7 致谢 21
1 绪论
1.1 引言