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1、河南理工大学毕业设计（论文）说明书具有报警功能电子密码锁的设计摘要在日常的生活和工作中,住宅与部门的安全防范、单位的文件档案、财务报表以及一些个人资料的保存多以加锁的办法来解决。若使用传统的机械式钥匙开锁，人们常需携带多把钥匙,使用极不方便,且钥匙丢失后安全性即大打折扣。在安全技术防范领域，具有防盗报警功能的电子密码锁逐渐代替了传统的机械式密码锁，电子密码锁具有安全性高、成本低、功耗低、易操作等优点。本文从经济实用的角度出发，采用美国Atmel公司的单片机AT89C51作为主控芯片与数据存储器单元，结合外围的矩阵键
2、盘输入、LCD液晶显示、报警、开锁等，用汇编语言编写的主控芯片控制程序与EEPROMAT24C02读写程序相结合，并用Proteus软件进行仿真，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。这种密码锁的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、保密性强、灵活性高、应用日益广泛。关键词密码锁单片机报警LCD显示自动拨号87河南理工大学毕业设计（论文）说明书ThewarningfunctionelectroncombinationlockdesignAbst
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4、emelyconvenient,andafterthekeyloses,thesecuritynamelysellsatadiscountgreatly.Inthesafetyworkguarddomain,hadthesecuritywarningfunctionelectroniccombinationlocktoreplacethetraditionalmechanicalcombinationlockgradually,theelectroniccombinationlockhadthesecurityto
5、behigh,thecostwaslow,thepowerlosslow,easytooperateandsoonmerits.Thisarticlefromeconomicalpracticalangleembarking,usesAmericanAtmelCorporation'smonolithicintegratedcircuitAT89C51totakethemastercontrolchipandthedata-carrierstorageunit,unifiestheperipherythematri
6、xkeyboardinput,theLCDliquidcrystaldisplay,thewarning,theunblankingandsoon,read-writeprocedureunifieswiththeassemblylanguagecompilation'smastercontrolchipcontrolprocedureandEEPROMat24C02,andcarriesonthesimulationwiththeProteusoftware,designedonesectiontobepossi
7、bletochangethepasswordmanytimes,hadthewarningfunctionelectronicpasswordcontrolsystem.Thiskindofcombinationlock'scircuitdesignhasagainstprobepressedkeyinput,theintelligentcontroltocage,theunblanking,thewarning,therevisionpasswordandsoonmanykindsoffunctions.Thep
8、asswordlengthvariables,thesecrecyisstrong,theflexibilityishigh,theapplicationisdaybydaywidespread.KeywordCombinationlockMonolithicintegratedcircuit87河南理工大学毕业设计（论文）说明书WarningLCDdemo
