基于单片机的电子密码锁设计.doc

毕业设计
学生姓名
学号
学院
物理与电子电气工程学院
专业
电子信息工程
题目
基于单片机的电子密码锁设计
指导教师
讲师/硕士
2014
年
5
月
毕业论文独创性声明
本人郑重声明:
本论文是我个人在导师指导下进行的研究工作及取得的研究成果。本论文除引文外所有实验、数据和有关材料均是真实的。尽我所知,除了文中特别加以标注和致谢的地方外,论文中不包含其他人已经发表或者撰写过的研究成果。其他同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示了谢意。

作者签名:__________
日期:_________
摘要:随着电子产品向智能化和微型化的不断发展,单片机已成为电子产品研制和开发中首选的控制器,所以具有防盗报警功能的电子密码控制系统逐渐代替传统的机械式密码控制系统,克服了机械式密码控制的密码量少,安全性能差的缺点。本课题设计了一种基于单片机的电子密码锁,这种电子密码锁以单片机作为数据处理主控芯片。电子密码锁的设计主要由四部分组成:4×4矩阵键盘接口电路、以AT89S51芯片为核心的密码锁的数据处理及控制电路、掉电情况下依然能保存密码的EEPROM存储器芯片。另外系统还有LED提示灯,报警蜂鸣器,单片机复位电路等。 电子密码锁设计的关键问题是实现密码的输入、清除、***、更改等功能。结合这种情况,本文对单片机的电子密码锁的设计进行了分析和探究。
关键词: AT89S51,电子密码锁,报警

Abstract: Along with the electronic products to intellectualized and the microminiaturized unceasing development, the monolithic integrated circuit has e in the electronic products development and the development the first choice controller, therefore has security reports to the police the function electronic password control system to replace traditional gradually the mechanical password control system, overcame the mechanical password control password quantity to be few, secure energy balance topic has designed one kind based on the monolithic integrated circuit electronic password lock, this kind of electronic password locks by the monolithic integrated circuit takes the data processing master control electronic password locks the design mainly posed by four parts: 4×4 the matrix keyboard connection electric circuit, by at89S51 chip the data processing and the control circuit which locks for the core password, falls in the electricity situation still to be able to preserve the password the EEPROM memory the system also has the LED prompt lamp, reports to the police the buzzer, the monolithic integrated circuit repositions the electric circuit and so on. The electronic password locks the design the key question is realizes functions and so on password input, elimination, unblanking, this kind