保险箱遥控密码锁

文档编号:JD104    附开题报告,任务书,外文翻译,大图,程序,字数:23151,页数:74

摘要

 随着电子技术的不断发展，电子产品已涉及到生活中的方方面面。保险箱是人们生活中的常用物品，古老的保险箱是用钥匙开启的，由于钥匙很容易被复制而逐渐遭淘汰；后来采用旋转式机械锁，操作较为繁琐; 如今密码保险箱都是采用固定数字键盘式的，甚至采用遥控器进行操作。
 本文介绍了一种采用AT89C52单片机芯片作为主控制器，实现电子密码锁的接受遥控、开关和报警等功能。根据实际需求，本系统设计了一组报警系统、一张保险箱门的开关以及一个遥控器和两组可修改的密码（权限密码和普通用户密码）。
本系统控制部分除了采用Intel公司的控制芯片AT89C51外，还采用了台湾普城公司生产的一种CMOS工艺制造的低功耗低价位通用编码、解码芯片（PT2262、PT2272）和ATMEL公司的AT24C02芯片。AT24C02芯片是典型的串行E2PROM芯片。它含有2KB的容量，在本系统中作为两组密码的保存单元。AT24C02的重要特点是保存的信息即使在掉电后也不会丢失。PT2262、PT2272是一对典型的编、解码芯片，该芯片最多可有12位(A0-A11)三态地址端管脚(悬空,接高电平,接低电平),任意组合可提供531441地址码,具有很高的安全性。
本系统的工作原理就是把用户从遥控器或固定键盘输入的密码与E2PROM芯片中存储的密码相比较，如果正确就开锁，错误就报警。
关键词:编码器与解码器、无线发送与接收、单片机
                                  
ABSTRACT:
The electrical product have been used widely in people’s life with the continuative development of electronic technology.As well-know to all,the coffer is the usual commodity of people’s life.The traditional coffer is operated operation.The modern coffer is operated in the fixed digital keyboard ,and even by wireless controller.
The thesis introduces a kind of system applying AT89C51 as the main controller.It can fufils the following functions of electrical cipper lock:wirless control,switch and alarm.According to the practical demands,the system design has a alarming system,a switch of coffer door,a aireless controller,and two group of revisable code (authorized code and common code).
The control section applies AT89C51, made in INTEL,one kind of CMOS coding chip—PT2262 and encoding chip__PT2272, (made by PUCHENG of Taiwan),and AT24C02(made by ATMEL).The AT24C02 chip is yypical series E2PROM chip,which has a capacity of 2KB.The chip is used in the system as the saving unit of two groups of code.The unique of AT24C02 is to save information in case of interruption of power supply. The PT2262 and PT2272 is a pair of coding and encoding chips,which has twelve bits(A0-A11) adress space.The arbitrary combination can be used as the adress code of 533441,which makes the system more safer.
The working principle of the system is to campare the code inout from fixed keyboard or from the wireless control with the saved code in the E2PROM.If the result is right,you can open the lock;Or else,the system willgive a alarm.
KEY WORDS:the corder,the wirelesslaunch single-chip, microcompter. 

文档目录如下:

摘要.................................................................................  1
Abstract: ............................................................................ 2
第二章  方案论证及整体设计 ........................................................... 4
2.1技术要求 .......................................................................... 4
2.2系统方案设计 ...................................................................... 5
2.3、遥控部分的方案论证 ...............................................................6
2.3.1、编码与解码电路................................................................  6
2.3.2、遥控发射与接收电路..............................................................7
2.4、主控制器的处理部分的的方案论证................................................... 8
2.4.1、主控制器部分..................................................................  8
2.4.2、键盘电路及数字显示电路 ........................................................ 8
2.4.3、密码锁的开启电路 .............................................................. 9
2.4.4、密码锁的存储电路 ...............................................................9
第三章  硬件电路设计 .................................................................10
3.1遥控部分 ..................................................................... ....10
3.1.1编码、解码电路 ................................................................. 10
3.1.2无线遥控发射、接收电路...........................................................15
3.2主控制器的处理部分 ............................................................... 20
3.2.1键盘电路及数字显示电路...........................................................20
3.2.2密码锁的开启电路 ................................................................22
3.2.3密码锁的报警电路.................................................................23
3.2.4密码的存储电路.................................................................  23
第四章  软件设计 .................................................................... 29
第五章系统调试 ............................................................... ......32
5．1、硬件部分调试..................................................................  32
5．2、软件部分调试..................................................................  33
5．3、总体调试 ...................................................................... 33
第六章结论 ......................................................................... 34
第七章致谢 ..........................................................................35
参考文献..................................................................... ........36
附录1：原程序代码...................................................................  37
附录2、电路图....................................................................... 74

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