毕业论文-基于STC89C52单片机的电子密码锁设计.docVIP

淮 阴 工 学 院 毕业设计说明书（论文） 作 者: 学 号： 系 (院): 电子与电气工程学院 专 业: 题 目: 基于STC89C52单片机的电子密码锁 ——硬件设计 指导者： 评阅者： 2015 年 6 月 毕业设计说明书（论文）中文摘要 随着科学技术的不断发展，人们对日常生活中的安全保险器件的要求越来越高。为满足人们对锁的使用要求，增加其安全性，用密码代替钥匙的密码锁应运而生。电子密码锁具有安全性高、成本低、功耗低、易操作等优点。本文介绍了一种以单片机为核心的可多次更改设置密码的电子密码锁。系统在密码输入错误次数超过3次时能自动报警并锁定键盘。用户通过连接单片机的矩阵键盘输入密码，单片机将用户输入的密码与预先保存在芯片的密码进行对比，从而判断密码是否正确，并驱动开锁电路或者报警电路控制开锁或者报警，还可通过语音播报的方式提示用户。 本课题硬件电路部分包括单片机模块及其附属子模块、键盘模块、显示模块、电源模块、蜂鸣器模块等。该系统电路简单、实用性强、显示直观醒目，实现了电子密码锁的密码开锁以及报警功能，对比普通机械锁的安全性有很大提升，可广泛应用于家庭、办公地的安全门锁控制系统。 关键词 电子密码锁，单片机，语音芯片，存储芯片 淮阴工学院毕业设计说明书（论文）第 PAGE 5 页 共 NUMPAGES 28页 毕业设计说明书（论文）外文摘要 Title The Design of Electroni Coded clocks —— Hardware Design Abstract With the continuous development of science and technology, in the daily life of people on insurance safety device is increasing demanding. To meet the requirements of the use of locks to increase their security, with a password instead of the password key lock came into being. Electronic password lock is safe, low cost, low power consumption, easy to operate, and other advantages. This article describes a kind of lock based on the microcontroller which can be changed multiple times. The system will automatically alarm and lock the keyboard when the password is entered more than three times the number of errors. Users enter the password by the keyboard matrix connected the microcontroller. In order to determine whether the password is correct and drive lock circuit or alarm circuit locking or alarming, the microcontroller will compare the password which the user entered with the passwords stored in advance in the chip, This electronic clock can also prompts the user by voice broadcast mode. This issue’s hardware circuit section includes a microcontroller module and its affiliated sub-modules, keyboard module, display module, power supply module, buzzer modu