贾国强毕业论文.docVIP

远程网络化电子密码锁监控系统的设计与实现 作者 贾国强 指导教师 张斌 摘要：本系统由单片机系统、矩阵键盘、LED显示和报警系统组成。系统能完成开锁、超时报警、超次锁定、管理员解密、修改用户密码基本的密码锁的功能。除上述基本的密码锁功能外，还具有调电存储、声光提示等功能，依据实际的情况还可以添加遥控功能。本系统成本低廉，功能实用。系统利用单片机控制器处理由矩阵键盘输入的密码信号，若密码正确则控制开锁驱动电路执行开锁功能，若密码输入连续3次错误则锁定并报警。为了防止停电情况的发生，本电路后备了UPS电源，它包括市电供电电路，停电检测电路，电子开关切换电路，蓄电池充电电路和蓄电池组成。保证电子密码锁的正常工作 关键词：AT89S51，AT24C02, 电子密码锁，矩阵键盘 Electronic lock remote network monitoring system Design and Implementation Abstrac：The system consists of single chip systems, matrix keypad, LED display and alarm system components. System to complete the unlock, police overtime, and Ultra Lock, Administrator decrypt, modify the basic password lock feature. In addition to the basic lock function, but also has stressed electrical memory, sound and light tips and other functions, according to the actual situation can also add a remote control. The system cost, functional and practical.System uses micro-controller handling the password from the matrix keyboard input signal, if the password is correct driver circuit implementation of the unlock control lock function, if the wrong password for 3 times, then lock and alarm.In order to prevent the blackout from happening, the circuit back-up UPS power supply.Including electricity power supply circuit, power failure detection circuit, the electronic switching circuit, battery charging circuitry and battery component. To ensure the normal operation of electronic locks.Keywords：AT89S51, AT24C02, electronic code locks, matrix keyboard 目 录 引言……………………………………………………………………………………、方案论证与比较…………………………………………………………………4 、电路的功能单元设计……………………………………………………………5 .1开锁机构……………………………………………………………………6 .2 按键电路设计……………………………………………………………...7 .3显示电路设计……………………………………………………………….4 AT24C02掉电存储单元的设计…………………………………………..1.5密码锁的电源电路设计..………………………………………………….1.6设计总框图………………………………………………………………...1.7设计总体电路图…………………………………………………………...1、程序设计………………………………………………………………………..1.1模块介绍…………………………………………………………………..1.2程序流程图………………………………………………………………..1、总结…………………………………………………………