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1、编号淮安信息职业技术学院毕业论文题目基于单片机电子密码锁设计学生姓名学号系部电子工程学院专业光电子（光伏发电）班级指导教师顾问教师二〇一四年六月摘要随着科技和人们的生活水平的提高，如何实现家庭防盗这一问题也变的尤为突出，传统的机械锁由于构造简单，被撬事件屡见不鲜。电子密码锁保密性好，使用灵活性高，收到广大用户的青睐。本设计是以单片机AT89C51作为密码锁的主控芯片与数据存储单元，结合外围的矩阵键盘输入、数码管显示、开锁、报警等，用汇编语言编写程序，并用keil软件进行编译设计了一款可以更改密码，具
2、有报警功能的电子密码控制系统。本设计采用矩阵键盘对密码进行输入，具有较高的优势，减少了I/O口的占用数目。密码的显示采用6位数码管实现，为确保安全性统一使用“—”显示密码。，当重新设置密码时数码管显示数字。采用采用蜂鸣器模拟报警系统，增加了密码锁的安全能力。软件使用汇编语言编程，运用自上而下的模块化设计思想，使系统朝着分布式、小型化方向发展，增强系统的可扩展性和运行的稳定性。测试结果表明，设计达到电子密码锁的功能。关键词：密码锁MCU报警AbstractAbstractAs technology a
3、nd people's living standards improve, the question how to achieve home burglar also become particularly prominent, the traditional mechanical locks because of simple structure, prizing a common occurrence. Electronic locks confidentiality, use of high
4、flexibility, received the majority of users of all ages.The design is based on AT89C51 microcontroller as the master chip lock data storage unit, combined with the external matrix keyboard input, digital display, lock, alarm, etc., written in assembly
5、language program and compiled using keil software can be designed a change the password, the password with alarm function electronic control system.This design uses the password input keypad matrix with high advantage, reducing the I / O port number of
6、 the occupation. Password is displayed using six digital tube, to ensure security uniform use "-" Show password. When the password is reset digital display numbers. Using simulated using the buzzer alarm system, increasing the safety lock capabilities.
7、 Software uses assembly language programming, the use of top-down, modular design, the system toward a distributed, miniaturization direction, enhance system scalability and operational stability. Test results show that the design meets electronic lock
8、s function.Keywords:LockMCUAlarm目录目录摘要IAbstractII第一章绪论11.1概述11.2电子密码锁的发展趋势11.3设计原理2第二章电子密码锁硬件电路设计32.1AT89C51单片机32.2矩阵键盘32.3开锁电路42.4报警电路52.5数码管显示电路62.6复位电路82.7密码存储电路设计8第三章软件设计113.1软件设计思路113.2LED显示子程序113.3键盘扫描子程序123.4密码比较和报警程序14第四章系统调试174
