毕业设计题目：基于单片机的电子密码锁设计与实现姓名：王东雪学号：2010080403204学院：信息学院专业：电子信息工程指导教师：张巧杰协助指导教师：2012年5月20日北京联合大学毕业设计摘要近年来，随着改革开放的深入发展，电子电器的飞速发展。人民的生活水平有了很大提高。各种高档家电产品和贵重物品为许多家庭所拥有。然而不法分子也是越来越多，原因在于大部分人防盗意识还不够强，造成偷盗现象屡见不鲜。越来越多的居民家庭对财产安全问题十分担忧。因此，出于安全方便等方面的需求，电子密码锁相继问世。本设计是以单片机AT89S51为主控芯片，并结合外围液晶显示LCD1602、存储芯片AT24C02、红外遥控HS0038，以及键盘输入、复位、电源等电路组合而成。系统能够完成开锁、报警、修改密码等基本功能，还能够通过红外来控制单片机的开锁，以及掉电储存密码的功能。整个设计在Keil开发环境下，用C语言编写主控芯片的控制程序来实现具有多功能的电子密码锁。关键词：密码锁AT89S51储存显示红外I北京联合大学毕业设计AbstractInrecentyears,withthedeepeningofreformandopening-up,withtherapiddevelopmentofelectronicappliances.Thepeople'slivingstandardhasbeengreatlyimproved.Avarietyofhigh-gradehouseholdelectricalappliancesandthevaluableshaveformanyfamilies.Howevercriminalsarealsomoreandmore,becausemostpeoplesecurityawarenessisnotstrongenough,causingstealphenomenonitisoftenseen.Moreandmorehouseholdsinpropertysafetyisconcernedabout.Therefore,forthesafeandconvenientandotheraspectsofthedemand,electronicpasswordlockinsuccession.ThedesignisbasedonSCMAT89S51asmaincontrolchip,andthecombinationofperipheralLCD1602liquidcrystaldisplay,memorychipAT24C02,infraredremotecontrolHS0038,andkeyboardinput,reset,powercircuitassembly.Thesystemcancompletethelock,alarm,modifypasswordsandotherfunctions,canalsothroughinfraredtocontrolchiplock,andpower-downsavepasswordfunction.ThewholedesignintheKEILdevelopmentenvironment,usingClanguagemastercontrolchipcontrolprocedurestoachievemultifunctionalelectroniccipherlock.KeyWords：PasswordlockAT89S51StorageDisplayInfrared目录摘要.............................................................................................................................IAbstract..........................................................................................................................II引言.............................................................................................................................1II北京联合大学毕业设计1概述.............................................................................................................................21.1课题背景和意义...................................................................................................21.2电子密码锁的发展趋势.......................................................................................22系统总体设计思路.....................................................................................................32.1系统设计要求.......................................................................................................32.2系统设计方案.......................................................................................................33系统硬件设计与实现.................................................................................................43.1主控芯片AT89S51...............................................................................................43.2存储模块AT24C02................................................................
