基于单片机密码锁4128275.doc

基于单片机密码锁毕业论文4128275 Tianjin University of Technology and Education 毕 业 设 计 专 业电子信息工程 班级学号 80502-15 学生姓名 朱智 指导教师孙程光 讲师 二○○九 年 六 月 天津工程师范学院本科生毕业设计 基于AT24C01的多功能密码控制系统的设计 The Design Of Multi-functions password control System Based on AT24C01 专业班级电信0502班 学生姓名 朱智 指导教师孙程光 讲师 系 别电子工程学院 2009年6月 摘 要 随着科技的日益发展电子密码控制系统已越来越符合人们的要求本文介绍了基于单片机和串行EEPROM的智能密码控制系统对系统硬件设计和软件实现进行了详细的描述该系统采用AT89C51单片机和AT24C01串行EEPROM通过AT89C51模拟I2C总线和AT24C01通讯实现密码控制的功能 本文从经济实用的角度出发采用美国Atmel公司的单片机AT89C51作为主控芯片与数据存储器单元结合外围的矩阵键盘输入LCD液晶显示报警开锁等用C语言编写主控芯片的控制程序与EEPROM读写程序相结合设计了一款可以多次更改密码具有报警功能的电子密码控制系统这种电路设计具有防试探按键输入智能控制上锁开锁报警修改密码等多种功能密码长度可变必威体育官网网址性强灵活性高 经实验证明该密码控制系统具有设计方法合理简单易行成本低安全使用等特点符合车辆办公室用锁要求具有推广价值 关键词 密码控制单片机EEPROM读写程序报警 ABSTRACT As the development of science and technology day by day the key control system is more in line with the requirements of people The paper presents a cryptographic smart password control based on MCU and serial EEPROM describes hardware structure and software design of the system It adopts AT89C51 and AT24C01 realizes the function of cryptographic smart password control AT89C51 communicates with AT24C01 by I2C bus to achieve the password control function This article from the economical and practical point of view the use of the United States Atmel Corporation AT89C51 microcontroller as a master chip and the data memory unit combined with the external matrix keyboard input LED digital display alarm unlock and so on dominated by the C programming language chip EEPROM of the control procedures and the combination of reading and writing program designed to change a password many times the police function with the electronic the password control This circuit design with anti-test button input intelligent control lock unlock alarm multiple functions such as Change Password Password length can be changed even more secret and flexible than others Experiments show that the password control system is characterized by its reasonable de