基于单片机的智能密码锁设计.doc

XX大学XXXXXXXXX 本科毕业论文（设计） 题 目 基于单片机的智能密码锁设计 指导教师 王霞 职称 讲师 学生姓名 XXX 学号 XXX 专 业 通信工程 班级 二班 院 （系） 电子信息工程学院电子工程系 完成时间 2011年4月17日 基于单片机的智能密码锁设计 摘 要 随着电子产品向智能化和微型化的不断发展，单片机已成为电子产品研制和开发中首选的控制器。随着人们生活水平的提高，如何实现家庭防盗这一问题也变的尤其的突出，传统的机械锁由于其构造的简单，安全性能低，无法满足人们的需要。 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，结合外围的矩阵键盘输入、LED数码管显示、报警、开锁等，用C语言编写主控芯片的控制程序，对系统硬件设计和软件实现进行了详细的描述，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： 密码锁/单片机 The design of Electric Lock based on a single chip ABSTRACT As electronic products are developing towards intelligence and minimization, single—chip computers (SCM ) have become the first choice for controllers in the development of electronic products. With the improvement of peoples living standards, it has become particularly prominent about how to achieve Anti-theft family. The traditional mechanical lock has such shortcoming as simple structure , Low security, it cant meet peoples demands. This article from the economical and practical point of view，the use of the United States Atmel Corporation AT89C51 microcontroller as a master chip combined with the external matrix keyboard input, LED digital display, alarm, unlock and so on, dominated by the C programming language 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 designing methods, simple operation, low cost and property of safety and practicality．Besides，the password control can be used in the office and has great potential for commercial developme