基于单片机的红外遥控电子密码锁设计毕业设计论文VIP免费

基于单片机的红外遥控电子密码锁设计[摘要]：在日常的生活和工作中,住宅与部门的安全防范、单位的文件档案、财务报表以及一些个人资料的保存多以加锁的办法来解决。本设计是基于51单片机设计的六位红外遥控密码锁，具有本机开锁遥控开锁，报警，工作状态液晶显示功能。密码锁具有安全性高、成本低、功耗低、易操作等优点。[关键词]：红外电子密码锁；报警；液晶显示;TheDesignofInfraredRemoteControlCombinationLockXiaopeng(Grade09,Class3,Majorelectronicsandinformationengineering，theschoolofphysicsandtelecommunicationsengineering，ShaanxiUniversityofTechnology，Hanzhong723003，Shaanxi)Tutor:ZhuYali[abstract]：Indailylifeandwork,withdepartmentofhousingsecurity,unitdocuments,financialstatementsandsomepersonalinformationusinglocktosave.Thisdesignisbasedon51single-chipwithinfraredremotecontrolcombinationlock,withunlockthemachineremotecontrollock,alarmandworkingstatusofliquidcrystaldisplayfunction.Combinationlockwithhighsafety,lowcost,lowpowerconsumption,easyoperation,etc.[Keywords]:Infraredelectroniccombinationlock；Thealarm;Liquidcrystaldisplay(LCD);目录1引言......................................................31.1电子密码锁的背景与研究意义..........................31.2红外电子密码锁的现状及发展趋势.......................41.3课题研究方法.........................................52红外通信原理..............................................52.1红外的发射和接收.....................................52.1.1编码解码........................................62.1.2调制............................................72.1.3解调接收........................................73硬件电路设计..............................................73.1整系统框图...........................................73.2设计思想..............................................83.3有关芯片的简介...................................93.3.1单片机AT89C51................................93.3.2存储芯片AT24C02介绍..........................113.3.3I2C总线介绍..................................123.3.4LCD1602液晶显示.............................153.3.5红外接收头....................................183.4电路图的设计.........................................193.4.1复位电路.......................................193.4.2振荡电路.......................................203.4.3继电器驱动电路.................................203.4.424C02.........................................213.4.5LCD1602.......................................214系统软件设计.............................................224.1KEIL软件的简介....................................224.2系统功能子程序......................................224.2.1数据读写模块...................................224.2.2红外发射接收模块...............................244.2.5主流程图.......................................265电路仿真及调试...........................................275.1报警电路............................................275.2显示电路............................................275.3开锁电路............................................28致谢.......................................................29参考文献...................................................30附录A外文资料翻译.........................................31附录B源程序...............................................38附录C电路图...............................................601引言1.1电子密码锁的背景与研究意义在当今社会，安全防盗已成为社会问题，而锁自古以来就是防盗的重要工具，目...