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论文编号 ZXX009 论文字数:11037,页数:34
摘 要
保险柜作为人们生活或工作中的一种不可或缺的重要设施，主要用于存放各种贵重物品，因而保险柜锁的安全性就变得至关重要。目前市场上的保险柜产品使用锁具主要是传统的机械转盘式密码锁，这种密码锁的密码量和转盘的复杂程度相关。为了保证密码量，就需要复杂的转盘结构，操作很不便利。如果结构简单，则密码量偏少，容易通过尝试密码的手段开锁，安全系数不够高。然而电子密码锁具有密码量极大，密码控制器主要由一块AT89C51的芯片通过编程来实现其具体功能，随着编程设密码的改变而改变，大大提高了安全性。
论文根据国内外研究状况，提出采用按键输入，单片机实现软件解码的方案。软件仿真表明，该方案能够较好的实现密码鉴别，密码错误报警等功能，基本满足数字密码锁的功能要求。
关键字：数字密码锁；密码鉴别；单片机
Abstract
Safe as people living or working in an integral and important facilities， mainly for the storage of various valuables，thus safe lock on the safety becomes critical. Currently on the market safe products use. Lock is the traditional mechanical turntable password lock. This password lock password volume and the complexity of dial-related. To ensure password volume, it is necessary to dial complex structure, very convenient. If the structure is simple, password volume of transactions through easy means to try to unlock the code, the safety factor is not high enough. But electronic password lock with password great quantity, Password mainly by a controller chip AT89C51 through programming to achieve their specific function.Programming with the password change for the sake of change greatly improving security.
According to the research theses conditions, the use of keystroke input SCM software decoder programs.Software simulation shows that the program can achieve better identification password, the password wrong alarm function meet basic password lock function.
Keywords：Password lock；password verification；SCM
目 录
摘 要 I
Abstract II
第一章 绪论 1
1.1国内外现状 1
1.2研究思路 3
1.3电子密码锁的简介 3
1.4设计目标 4
第二章.密码锁方案的选择及芯片介绍 5
2.1方案介绍 5
2.2芯片的介绍 5
第三章 硬件设计 9
3.1 C51单片机的外围电路设计 10
3.2开锁控制电路设计 10
3.3显示部分电路 11
3.4按键电路设计 12
第四章 软件设计 13
4．1软件系统基本设计思想 13
4.2 按键识别 14
4.2.1按键开关的抖动问题 14
4.2.2 中断响应程序 16
第五章 调试过程 19
小结 22
.致谢 23
参考文献 24
附录 25
附录1程序代码 25
附录2仿真图 30 |
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发表于 20:51