保險箱遙控密碼鎖

電子機電論文編號:JD104    附開題報告,任務書,外文翻譯,大圖,程序,字數:23151,頁數:74

論文目錄如下:

摘要.................................................................................  1
Abstract: ............................................................................ 2
第二章  方案論證及整體設計 ........................................................... 4
2.1技術要求 .......................................................................... 4
2.2系統方案設計 ...................................................................... 5
2.3、遙控部分的方案論證 ...............................................................6
2.3.1、編碼與解碼電路................................................................  6
2.3.2、遙控發射與接收電路..............................................................7
2.4、主控制器的處理部分的的方案論證................................................... 8
2.4.1、主控制器部分..................................................................  8
2.4.2、鍵盤電路及數字顯示電路 ........................................................ 8
2.4.3、密碼鎖的開啟電路 .............................................................. 9
2.4.4、密碼鎖的存儲電路 ...............................................................9
第三章  硬件電路設計 .................................................................10
3.1遙控部分 ..................................................................... ....10
3.1.1編碼、解碼電路 ................................................................. 10
3.1.2無線遙控發射、接收電路...........................................................15
3.2主控制器的處理部分 ............................................................... 20
3.2.1鍵盤電路及數字顯示電路...........................................................20
3.2.2密碼鎖的開啟電路 ................................................................22
3.2.3密碼鎖的報警電路.................................................................23
3.2.4密碼的存儲電路.................................................................  23
第四章  軟件設計 .................................................................... 29
第五章系統調試 ............................................................... ......32
5．1、硬件部分調試..................................................................  32
5．2、軟件部分調試..................................................................  33
5．3、總體調試 ...................................................................... 33
第六章結論 ......................................................................... 34
第七章致謝 ..........................................................................35
參考文獻..................................................................... ........36
附錄1：原程序代碼...................................................................  37
附錄2、電路圖....................................................................... 74

摘要

 隨著電子技術的不斷發展，電子產品已涉及到生活中的方方面面。保險箱是人們生活中的常用物品，古老的保險箱是用鑰匙開啟的，由于鑰匙很容易被復制而逐漸遭淘汰；后來采用旋轉式機械鎖，操作較為繁瑣; 如今密碼保險箱都是采用固定數字鍵盤式的，甚至采用遙控器進行操作。
 本文介紹了一種采用AT89C52單片機芯片作為主控制器，實現電子密碼鎖的接受遙控、開關和報警等功能。根據實際需求，本系統設計了一組報警系統、一張保險箱門的開關以及一個遙控器和兩組可修改的密碼（權限密碼和普通用戶密碼）。
本系統控制部分除了采用Intel公司的控制芯片AT89C51外，還采用了臺灣普城公司生產的一種CMOS工藝制造的低功耗低價位通用編碼、解碼芯片（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，在本系統中作為兩組密碼的保存單元。AT24C02的重要特點是保存的信息即使在掉電后也不會丟失。PT2262、PT2272是一對典型的編、解碼芯片，該芯片最多可有12位(A0-A11)三態地址端管腳(懸空,接高電平,接低電平),任意組合可提供531441地址碼,具有很高的安全性。
本系統的工作原理就是把用戶從遙控器或固定鍵盤輸入的密碼與E2PROM芯片中存儲的密碼相比較，如果正確就開鎖，錯誤就報警。
關鍵詞:編碼器與解碼器、無線發送與接收、單片機
                                  
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.