理工大学信息学院摘要-PAGEII-PAGEI毕业设计说明书设计题目：基于单片机的智能电子密码锁的设计摘要如今，科技越来越发达，人们的生活水平也日益提高，防盗问题也成为生活中一大难题。在我们平常的工作和生活里，自家住所的保护措施、公司文件及资料的安全保护都会用锁来实现。自古以来，人们用的都是机械锁，但是机械锁的保护能力已经跟不上现代社会的需求。现在的电子设备趋向于微型与智能化，单片机在电子产品的控制器地位中无可替代，所以兼有防盗及报警功能的以单片机为控制系统的智能电子密码锁已经渐渐代替了传统的机械式的密码锁，弥补了机械式密码锁的安全性能低及密码量少等缺点。此设计由复位电路、STC89C52单片机和晶振电路、蜂鸣器、4*4矩阵键盘、继电器等组成。在此设计中，通过4*4键盘来进行输入密码以及修改密码，通过蜂鸣器来实现报警功能，单片机最小系统由复位电路和晶振电路与STC89C52单片机组成。此设计具有6位密码的设置，并可以对密码进行修改，且密码错误后会有报警功能。关键词报警；密码锁；STC89C52；蜂鸣器Abstract目录PAGE\*MERGEFORMATIIPAGE\*MERGEFORMATiAbstractNowadays,withthescienceandtechnologyprogressingandthelivingstandardsofpeoplearehigherdaybyday,theanti-theftproblemhasbecomeagreatprobleminthelife.Inourordinarylifeandwork,theprotectivemeasuresofmessuageandthesecurityprotectionofcompanydocumentsandinformationwillbetoachievebylock.Fromancienttimes,peoplehaveusedmechanicallock,however,theprotectivecapabilityofmechanicallockcannotkeepupwiththerequirementsofmodernsociety.Astheelectronicequipmenttendstobeminiatureandintelligentintoday’ssociety,thesinglechiphasbeenintheirreplaceablepositionofthecontrollerintheelectronicproducts.Therefore,theintelligentelectroniccodedlock,whichusestheSCMasthecontrolsystemandcombiningthefunctionbothofanti-theftandalarm,hasgraduallyreplacedthetraditionalmechanicalcodedlockandmakeupfortheshortcomingswhicharethesafetypropertyandpasswordlessandsoonofthemechanicalcipherlock.Thisdesignisconstitutedbytheresetcircuit,STC89C52SCM,crystaloscillatingcircuit,buzzer,4*4matrixkeyboards,relaysandothercomponents.Inthisdesign,throughthe4*4keyboardenteringandchangingthepassword,thebuzzercanachievethefunctionofalarm.Whiletheminimumsystemofthesinglechipismadeupoftheresetcircuit,crystaloscillatingcircuitandSTC89C52SCM.Thislockhasasixdigitspasswordsettings,andthepasswordcanbechanged.Whenenteringthewrongpassword,italsowillhavethealarmfunction.Keywordsalarm;codedlock;STC89C52;buzzer目录PAGEIII目录TOC\o"1-3"\h\z\uHYPERLINK\l_Toc2266