基于单片机的电子密码锁系统设计(含电路原理图,Proteus仿真程序)(课题申报表,任务书,开题报告,中期检查表,外文翻译,论文17000字,Proteus仿真程序,答辩PPT)
摘 要
随着人们生活水平的提高。
系统设计方案
由于单片机种类繁多,以期获得最佳的性价比。
(3)能够LCD显示在密码正确时显示PASSWORD OPEN,修改密码之前必须再次输入密码,保密性强,以防止误操作 。
(2)设计开锁密码位六位密码的电子密码锁。
关键词:电子密码锁;报警;液晶显示;STC89C52
Abstract
As people's living standards improve, the question how to achieve home security has become particularly prominent. In science and technology is developing continuously, electronic code lock as a security guard's role is increasingly important.
This article from the economical point of view, the system by the STC89C52 with low power CMOS based EEPROM AT24C02 as the master chip and the data memory unit, combined with the external keyboard, LCD display, alarm, unlock and other circuit modules. It performs the following functions: enter the password correctly under the premise of unlocking; wrong password case the alarm; password can be changed according to user needs. Master in C language control program and EEPROM AT24C02 chip to read and write process are combined and compiled with the Keil software, designed a number you can change the password, the password with an electronic alarm control system.
The lock has a reasonable design, simple, low cost, safe and practical, confidentiality, flexibility, and high, with some promotional value.
Keywords:Electric Password lock; Alarm; LCD Display;STC89C52
电子密码锁设计的具体要求
(1)本设计为了防止密码被窃取要求在输入密码时在LCD屏幕上显示*号。
本密码锁具有设计方式合理,具有一定的推广价值。
目 录
第1章 概述 1
1.1课题背景和意义 1
1.2电子密码锁的发展趋势 2
第2章 单片机的介绍 3
2.1单片机及其特点 3
2.2单片机的发展趋势及应用 3
2.3单片机应用 4
2.4本章小结 5
第3章 系统硬件设计 6
3.1电子密码锁设计的具体要求 6
3.2系统设计方案 6
3.3单元电路的设计 8
3.4本章小结 16
第4章 系统软件设计 17
4.1主程序流程图 17
4.2按键软件设计 18
4.3密码设置软件设计 20
4.5本章小结 24
第5章 系统仿真、调试 25
5.1Proteus软件简介 25
5.2进入Proteus ISIS 25
5.3工作界面 26
5.4各模块的电路图及说明 27
5.5本章小结 35
结 论 36
参考文献 37
致 谢 38
附录1 密码锁电路原理图 39
附录2主要C语言源程序 40