搜索
大学本科生毕业设计（论文）1[请输入学校名称][请输入专业]基于单片机的指纹解锁设计姓名：[请输入姓名]学号：[请输入学号]指导教师：[请输入指导教师]2020年4月18日大学本科生毕业设计（论文）2摘要近年来，指纹识别技术在国内外发展很快，由于其良好的安全性目前该技术已被广泛应用于生活和工作中。随着成本的下降，指纹识别技术呈现全面推广和普遍应用的趋势。指纹识别技术是目前国际公认的应用广泛、价格低廉、易用性高的生物人证技术。指纹只是人体皮肤的一小部分，但是它却蕴涵了大量的信息。皮肤的纹路在图案断点交叉点是个不相同的。医学上已经证明这些特征对于每个手指都是不同的，而且这些特征具有唯一性和永久性。因此我们就可以把一个人同他的指纹对应起来，通过比较他的指纹特征和预先保存的指纹特征，就可以验证他的真实身份。本设计开发了一款基于单片机的指纹识别电子密码锁系统。该系统以STC89C52单片机作为模块核心，通过串口通信控制FM608指纹模块实现录取指纹并存储指纹数据，并通过HS12864-15C液晶显示比对流程及比对结果，辅以直流继电器与发光二极管模拟开锁的动作。本系统具有体积小、性价比高、传输速度快、适合家庭及单位使用。关键词：单片机；指纹识别；液晶屏大学本科生毕业设计（论文）3ABSTRACTInrecentyears,fingerprintidentificationtechnologyhasdevelopedrapidlyinChinaandabroad,becauseofitsgoodsecuritynowthatthetechnologyhasbeenwidelyusedindailylifeandwork.Withthedeclineinthecostofthefingerprintrecognitiontechnologyandthecomprehensivepromotionandgeneraltrendsshouldbe.Fingerprintrecognitiontechnologyisatechnologyofbiology-authenticationwidelyusedandlegalizedininternationaltodaybecauseofitslow-priceandfinerapplication.Fingerprintjustisasmallpartoftheskin,butitcontainsagreatdealofinformation.Theveinsoftheskinaredifferentinpatternandcrosspointandbreakpoint.Medicinehasproventhatthesecharacteristicsaredifferentforeachfingerandthesecharacteristicsareuniqueandpermanent.Sowecanputaperson'sfingerprintscorrespondwithhimbycomparinghisfingerprintcharacteristicsandpre-storedfingerprintfeatures,youcanverifyhistrueidentity.ThesystemdesignoffingerprintrecognitionelectronpasswordlockbasedonSingle-chipmicroprocessorisdevelopedinthethesis.ThesystemSTC89C52MCUasthecoremodule,throughtheserialcommunicationcontrolFM608fingerprintmodulefortakingfingerprintsandstorefingerprintdataandliquidcrystaldisplaybyHS12864-15Cratiothanontheprocessesandresults,supportedbysimulationofDCrelaysandLEDsunlockaction.Thesystemissmall,cost-effective,andfastandsuitableforfamiliesandunits.KeyWords：Single-chipmicroprocessor;fingerprintdetection;LCD大学本科生毕业设计（论文）4第1章概述........................................................61.1指纹识别技术的发展..................................................................................61.2指纹识别原理..............................................................................................71.3系统设计目的及意义..................................................................................81.4工作流程......................................................................................................8第2章硬件介绍和设计..............................................102.1单片机及最小系统....................................................................................102.1.1STC89C52单片机介绍.................................................................102.1.2外部晶振的设计...........................................................................132.1.3复位电路的设计...........................................................................142.2液晶显示模块............................................................................................152.2.112864系列液晶的引脚功能.........................................................152.2.2控制器接口说明...........................................................................152.2.3指令说明.......................................................................................162.2.412864引脚与单片机连接图.........................................................212.3按键控制部分电路....................................................................................232.4指纹模块....................................................................................................242.4.1指纹模块简介...............................................................................242.4.2指纹模块引脚接法.......................................................................262.4.3指纹模块命令...............................................................................272.5本章小结....................................................................................................29第3章系统软件的设计..............................................303.1系统程序工作分析....................................................................................303.2串口初始化................................................................................................303.3主程序流程图............................................................................................313.3.1键盘管理程序设计流程................................................................323.3.2LCD显示模块程序设计流程.......................................................343.3.3指纹模块的通信程序设计流程...................................................343.4Keil编程.....................................................................................................353.5本章小结....................................................................................................36第4章硬件调试....................................................374.1电路的焊接................................................................................................374.2程序的烧写................................................................................................384.3小灯、继电器的调试................................................................................394.4液晶的调试...