摘要江苏大学电气信息工程学院本科毕业设计基于单片机的指纹打卡机设计DesignofFingerprintAttendanceMachineBasedonSingleChipMicrocomputer摘要在科学技术飞速发展的今天，社会对身份识别的要求越来越高，尤其是在企业管理的人员签到、工作考勤等活动中对身份识别的高效性和可靠性的需求更为迫切。而传统的个人身份识别手段，如钥匙、密码、IC卡等，由于具有可盗用、可伪造、可破译的等一系列缺点，已经难以满足信息高度机密化的现代社会的需求。但随着计算机运算能力的不断增强以及相关算法的不断完善，指纹识别技术在身份识别领域的应用越来越普遍。由于指纹具有终生不变性、唯一性和不可代替性，使得身份的确定更加可靠、准确。因此，将指纹识别技术应用于签到考勤中，做成指纹打卡机，能够很好的满足现代社会的要求。本设计以STC12系列单片机作为主控芯片，设计一个满足基本考勤要求的指纹打卡机系统。其模块分为单片机主制模块、FM-70光学指纹模块、LCD显示模块以及按键模块。整个系统最终功能包括指纹登记、指纹签到签退、指纹信息删除以及打卡时间显示等，能够基本满足一般的考勤需要。关键词:指纹打卡机单片机DesignofFingerprintAttendanceMachineBasedonSingleChipMicrocomputerAbstractIntherapiddevelopmentofscienceandtechnologytoday,thecommunityisincreasinglydemandingtheidentification,especiallyintheenterprisemanagementpersonnelattendance,workattendanceandotheractivitiesintheidentificationofthehighefficiencyandreliabilityofthemoreurgent.Thetraditionalpersonalidentificationmethods,suchaskeys,passwords,ICcards,etc.,duetothetheft,canbeforged,canbedecipheredandaseriesofshortcomings,hasbeendifficulttomeettheinformationhighlyconfidentialneedsofmodernsociety.However,withthecontinuousenhancementofcomputercomputingabilityandthecontinuousimprovementofrelatedalgorithms,theapplicationoffingerprintrecognitiontechnologyinthefieldofidentificationisbecomingmoreandmorecommon.Asthefingerprinthasalifetimeofinvariance,uniquenessandirreplaceability,makingtheidentityofthemorereliableandaccurate.Therefore,thefingerprintrecognitiontechnologyusedtosignattendance,madeoffingerprintpunchcardmachine,canbeverygoodtomeettherequirementsofmodernsociety.ThedesigntoSTC12seriesmicrocontrollerasthemaincontrolchip,designameetthebasicattendancerequirementsofthefingerprintpunchcardmachinesystem.Themoduleisdividedintosingle-chipmainmodule,FM-70opticalfingerprintmodule,LCDdisplaymoduleandkeymodule.Thefinalfunctionoftheentiresystem,includingfingerprintregistration,fingerprintsign,fingerprintinformationdeletionandcheck-intimedisplay,etc.,canbasicallymeetthegeneralattendanceneeds.KeywordsFingerprintAttendancemachineSingleChipMicrocomputer目录第1章引言...................................................11.1指纹识别的研究意义.............................................................................................11.2指纹识别的国内外发展现状.................................................................................21.3本设计的研究内容.................................................................................................2第2章系统方案的制定.........................................62.1系统功能要求.........................................................................................................62.2方案一.....................................................................................................................62.3方案二.....................................................................................................................72.4方案三.......................
