基于单片机的电子密码锁(毕业论文).docVIP

XXXXX学院 毕 业 设 计（论文） 2012 届 题 目 基于单片机的电子密码锁 专 业 电子信息工程 学生姓名 XXXXXX 学 号 XXXXXXXXX 指导教师 XXXXXX 论文字数 12001 完成日期 2012年5月9日 XXXXXX 学 院 教 务 处 印 制 基于单片机的电子密码锁 摘要：现今的生活水平越来越高，贵重物品也越来越多，人们的防盗意识也越来越高。以前的机械锁被撬锁的可能性很高，东西丢失的可能性也越来越高。为了避免这一现象，人们研发出了密码锁。本文中的电子密码锁以STC89C52单片机为主控芯片，有智能控制修改密码、按键回退、报警开锁、上锁等多种功能。STC89C52单片机具有E2PROM的功能，可以任意修改密码而不需要外接程序存储器，还有掉电存储功能。GSM模块具有短信收发功能，把实况信息发送到以 STC89C52单片机为系统控制的核心处理模块上，可以用短信来修改密码。该密码锁的电路由主控电路、按键电路、1602显示电路、电子锁控制电路、蜂鸣器控制电路、串口部分电路组成。基于单片机的电子密码锁安全性更高，更符合人们的要求，广受人们欢迎。 关键词：单片机，电子密码锁，GSM模块 The Electronic Lock Based on Singlechip Abstract: The current standard of living is getting higher and higher, The valuables are also more and more ,and peoples awareness of theft has become more sophisticated.Mechanical lock is a high probability of breaking before.To avoid this phenomena, people developed a password lock.The Electronic lock uses the STC89C52 microcontroller as the controller chip in this paper, which has the function to modify the password lock, revocation,alarm, unlock and lock. The STC89C52 singlechip has the function of E2PROM. It can modify the password without the external program memory, and it has the function of storing memories. GSM module has the function of message sending and receiving,of GSM module can send the actual information to the core control processing modules of The STC89C52 singlechip. It can use the text messages to modify the password. The circuit of this password lock is made of the main control circuit, the key circuit, 1602 show circuit, electronic lock control circuit, buzzer control circuit and serial interface circuit .The electronic lock based on singlechip is safer, more in line with the requirement of people, and widely welcomed by the people. Keywords：singlechip, Electronic lock, G