设计说明书
总字数：11000+
随着当前人们经济的发展，人们生活水平的提高，当前人们对财产安全和人身安全的重视程度越来越高，此次设计一款指纹电子密码锁，主要是为了解决当前大部分用户使用的密码锁在输入密码锁被旁人盗取，或者存在有人多次输入密码从而盗取用户密码，给用户造成财产损失。此次设计的基于STC89C52单片机控制的电子密码锁。该机器通过使用单片机STC89C52进行编写程序，并使用LCD1602显示密码。当前输入的六个数字使用“*”显示在屏幕上。正确输入密码后，继电器控制门锁打开，并且显示屏会显示门已打开；当错误的密码或者录入指纹错误时，语音播报密码错误或者指纹不匹配，错误次数超过三次时，蜂鸣器会发出警报信号，自动锁定键盘三分钟。用户可以根据需求重新设置电子锁密码和录入指纹，修改的密码和录入的指纹进行断电保持。此次设计可以解决当前，电子密码的输入密码过程中密码被盗窃，或者被不法分子对当前密码锁的试错从而打开用户家中进行盗窃。此次设计的电子密码锁具有操作监简单、保密性强、防偷窥的优势。
关键字：密码锁；指纹；动态密码；防偷窥；语音播报
With the development of people’s economy and the improvement of people’s living standards, people pay more and more attention to property safety and personal safety. The design of a fingerprint electronic password lock is mainly to solve the problem that most users use the password lock in the input password lock is stolen by others, or there are people repeatedly enter the password to steal the user password. Cause property damage to users.
The design based on STC89C52 MCU control of electronic password lock. The machine through the use of single chip microcomputer STC89C52 programming, and use LCD1602 display password. The six numbers currently entered are displayed on the screen using “*”. After entering the correct password, the relay controls the door lock to open, and the screen will show that the door is open; When an incorrect password or fingerprint input is incorrect, the voice will broadcast the incorrect password or fingerprint mismatch. If the number of incorrect passwords exceeds three times, the buzzer will send an alarm signal and automatically lock the keyboard for three minutes. The user can reset the electronic lock password and input fingerprint as required. The changed password and input fingerprint are kept off power.
The design can solve the current, electronic password input password in the process of password theft, or by the criminals on the current password lock trial and error to open the user’s home for theft. The design of the electronic password lock has the advantages of simple operation supervision, strong confidentiality and anti-peeping.
Keywords: password lock; Fingerprint; Dynamic password; Anti-snooping; Voice broadcasting
目录
摘 要
Abstract
第1章 引 言
1.1 选题背景及实际意义
1.2 国内外发展历程
1.3 本论文研究目标
第2章 系统设计方案
2.1 主要元器件选择
2.1.1 主控芯片选择
2.1.2 显示方案选择
2.2 整体设计方案
第3章 硬件设计
3.1 主控电路模块
3.2 指纹模块检测电路模块
3.3 时钟模块电路
3.4 存储模块电路
3.5 显示电路模块
3.6 语音输出模块电路
3.7 继电器电路模块
3.8 矩阵键盘模块电路
3.9 报警模块电路
第4章 系统程序设计
4.1 编程软件介绍
4.2 系统主流程设计
4.3 矩阵键盘子流程
4.4 时钟模块子流程
4.5 LCD1602液晶显示子流程
第5章功能测试
5.1 仿真开锁测试
5.1 实物开锁测试
结论
参考文献
附录一: 原理图
附录二：PCB
附录三：主程序
致 谢
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