基于51单片机的电子锁设计.docxVIP

PAGE I 无锡城市职业技术学院2012级应用电子专业毕业设计报告（论文） PAGE PAGE 1 摘 要 在日常的生活和工作中, 住所的防盗门、重要的文件档案、财务账目和一些个人文件的安全大多通过加锁来解决。若是使用传统的钥匙开锁，还存在很多安全隐患，钥匙丢失后连自己都打不开锁，并且丢失后很容易被不怀好意的人利用。因而，更为方便安全的电子密码锁取代传统的钥匙锁已是必然趋势。随着科术的不断进步，人们对日常生活中的锁具的要求越来越高。为满足人们不断提高的使用要求，增加其安全性，密码锁于是应运而生。密码锁具有成本低、功耗小、操作简单、安全性高、记住密码即可开锁等多种优点。 本文主要介绍了用STC89C51单片机控制的电子密码锁功能以及相应的硬件电路设计，本系统还包括报警系统、LCD1602显示和4×4矩阵键盘。本设计同时包括了开锁、关锁、修改密码、超次报警、超次锁定和输错报警等功能。本设计通过P0口控制LCD显示，当密码输入正确时LCD显示OPEN！密码输入错误显示ERROR！当密码错误超过三次时自动锁定。并且本设计还增加了红外遥控功能，可通过遥控器进行远距离控制。 关键词：STC89C51；LCD1602；电子密码锁；红外遥控 Abstract In daily life and work, home security doors, important documents, the safety of financial accounts and some personal files are mostly addressed by locking. If use the traditional key to unlock, there are many safe hidden trouble, cant unlock key after lost themselves, and lost after used by malicious people easily. Therefore, more convenient safe electronic combination lock to replace the traditional key lock is inevitable trend. Along with the advance of branch operation, people more and more high to the requirement of locks in everyday life. To meet the requirements of the use of the increasing improvement of the people, increase its safety, combination lock so arises at the historic moment. Combination lock has low cost, low consumption, simple operation, high safety, remember password lock and so on the many kinds of optimal . This article mainly introduced the STC89C51 microcontroller control by using electronic combination lock function and the corresponding hardware circuit design, this system also includes alarm system, the LCD1602 display and 4 * 4 matrix keyboard. This design includes the lock at the same time, shut, change passwords, super mistyped alarm and alarm, super lock, and other functions. This design through P0 port control LCD display, when the password input the correct LCD display OPEN! Password input ERROR display ERROR! Automatically lock when wrong password more than three times. And this design also increase