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1河南机电高等专科学校毕业设计论文论文题目：基于单片机的密码锁设计系部电子通信工程系专业通信技术班级通技102班学生姓名宋军辉学号100413117指导教师董蕴华2013年01月08日河南机电高等专科学校/论文1摘要随着科技和人们的生活水平的提高，如何实现家庭防盗这一问题也变的尤其的突出，传统机械锁由于构造简单，被撬事件屡见不鲜；电子锁由于其保密性高，使用灵活性好，安全系数高，受到了广大用户的青睐。本设计以单片机AT89C51作为密码锁监控装置的检测和控制核心，分为主机控制和从机执行机构（本设重点介绍主机设计），实现钥匙信息在主机上的初步认证注册、密码信息的加密、钥匙丢失报废等功能。根据51单片机之间的串行通信原理，这便于对密码信息的随机加密和保护。而且采用键盘输入的电子密码锁具有较高的优势。采用数字信号编码和二次调制方式，不仅可以实现多路信息的控制，提高信号传输的抗干扰性，减少错误动作，而且功率消耗低；反应速度快、传输效率高、工作稳定可靠等。软件设计采用自上而下的模块化设计思想，以使系统朝着分布式、小型化方向发展，增强系统的可扩展性和运行的稳定性。测试结果表明，本系统各项功能已达到本设计的所有要求。关键词:单片机；密码锁；单片机设计;电子锁河南机电高等专科学校/论文2洞洞板/万能板成品图片左下角有地址-有录像河南机电高等专科学校/论文3ABSTRACTAlongwiththeexaltationofsocialscienceandthelivinglevelofpeople,howcarryoutthefamilytoguardagainsttheft,thisproblemalsochangeparticularlyoutstanding.Becauseofthesimpleconstructoftraditionalmachinelock,theaffairsoftheftishackneyed.theelectronicslockissaferbecauseofitsconfidentiality,usingthevividgood,thesafecoefficientishigh,beingsubjectedtothelargecustomerclose.Itcancarryoutthekeyinformationtoregisterinthemainonboardinitialattestation,thepasswordinformationencryptetc.Gotocorrespondbylettertheprincipleaccordingtothestringbetween51machines,thisiseasytoencryptandprotecttothepasswordsinformationrandom.Adoptthenumericalsignalcodes,notonlycancarryoutmanycontrolsoftheroadinformation,raisetheanti-interferencethatsignaldeliver,reducethemistakeaction,butalsothepowerconsumeislow，Respondquickly,theefficiencydeliverishigh,workstablecredibilityetc.Thesoftwaredesignadoptionthedesignthoughtfromtoptobottom,tomakethesystemtowardweardistributetype,turntothedirectiondevelopmentofsmall,strengthenthesystemandcanexpandthestabilityandcirculate.Testtheresultenunciation,variousfunctionsofthissystemarealreadyallrequestofthisdesign.keyword：singlechip;cryptogramlock;singlechipdesign;electronicslock.河南机电高等专科学校/论文I目录Ⅰ目录....................................................................................................................................................Ⅰ1绪论..................................................................................................................................................11.1引言...................................................................................................................................11.2电子密码锁的背景..........................................................................................................11.3电子锁设计的意义的本设计特点.......................................................................................22系统设计..........................................................................................................................................42.1系统总设计结构图...........................................................................................................42.2．开锁机构设计................................................................................................................42.3主控芯片AT89C51单片机的简介...................................................................................53系统硬件设计..................................................................................................................................83.1键盘设计............................................................................................................................83.2系统电路设计：.............................................................................................................IX3.2.1晶振时钟电路............................................................................................................IX3.2.2复位电路设计..............................................................................................................X3.2.3串口引脚功能介绍......................................................................................................X3.2.4其它引脚.....................................................................................................................X3.2.5显示电路设计.............................................................................................................X3.3电路图的绘制..................................................................................................................X3.4元器件采购..................................................................................................................XIII4软件设计.....................................................................................................................................XIV4.1系统软件设计整体思路.............................................................................................XIV4.2系统软件设计流程图.....................................................................................................165程序调试........................................................................................................................................165.1程序调试用到的软件及工具..................................................................................165.2KEILC51简介.........................................................................................................175.3调试过程.............................................................................