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毕业设计（论文）题目学生姓名专业班级学号所在系指导教师完成时间智能温控风扇的设计摘要基于室内环境温度监测和单片机控制技术，设计了一种智能温控调速风扇。从智能温控调节风扇速度的基本工作原理、模块化硬件设计、软件实现的过程。系统原理工作稳定，成本低，具有一定的节能效果。通过单片机实现控制智能温控电风扇的主要功能：当按下开关按键时，系统初始化默认的设定温度为26度，如果外界温度高于设定的温度时，电风扇自动启动运转，如果外界温度低于设定温度则电风扇自动关闭，同时显示外界的温度。可以设置所需的温度，并同时显示所设定的温度，同时可按加减键设定温度。智能温控电风扇的随着外界温度自动控制风扇启动关闭，普通电风扇无法根据外界温度自动调节转速，智能温控电风扇让电风扇这一家用电器变的更智能化。也大量节约电能，因此智能电风扇的设计具有重要的现实意义。关键词：智能控制，主控制器，分控制器，单片机，定时控制EsignofintelligenttemperaturecontrolfanABSTRACTIndoorenvironmenttemperaturemonitoringandcontroltechnologybasedonMCU,designsanintelligenttemperaturecontrolfan.Thebasicworkingprinciple,theintelligenttemperatureadjustmentinfanspeedmodulehardwaredesignandsoftwareimplementation.Theworkingprincipleofsystemstability,lowcost,ithascertaineffectofsavingenergy.ThroughtheMCUcontrolthemainfunctionoftheintelligenttemperaturecontrolelectricfan:whentheswitchbuttonispressed,thesysteminitializedefaultsettingtemperatureto26degrees,iftheoutsidetemperatureishigherthanthesettemperature,theelectricfanautomaticstartupandrunning,iftheoutsidetemperaturebelowthesettemperature,theelectricfantoautomaticallyshutdown.Atthesametimethattheoutsidetemperature.Youcansetthedesiredtemperature,andatthesametimethatthesettemperature,andcansetthetemperatureswitch.Intelligenttemperaturecontrolelectricfanwiththeoutsidetemperatureautomaticcontrolfanstartupandshutdown,theordinaryelectricfancannotaccordingtotheoutsidetemperatureautomaticallyadjustthespeedof,theintelligenttemperaturecontrolelectricfanforelectricfaninthehouseholdappliancesbecomemoreintelligent.Itsavesalargeamountofelectricenergy,thereforeithasimportantpracticalsignificancetothedesignofintelligentelectricfan.KeyWords:Intelligentcontrol，Hostcontroller,Auxiliarycontroller,Single-chipmicrocomputer,Timedcontrolling4目录1绪论.........................................................................................................61.1引言..................................................................................................61.2发展现状与应用领域.....................................................................62整体方案的设计.....................................................................................72.1系统整体设计..................................................................................72.2方案论证..........................................................................................72.3温度传感器的选择方案.................................................................72.4控制核心的选择..............................................................................82.3显示电路的选择..............................................................................92.4调速方式的选择..............................................................................92.5控制执行部件的选择...................................................................103主要原件的介绍...................................................................................113.1温度传感器....................................................................................113.1.1温度传感器的种类和选择.........................................................................113.1.2DS18B20的工作原理及其单片机的接口电路........................................113.2单片机............................................................................................133.2.1单片机的种类及选择.................................................................................133.2.2AT89C52单片机简介...............................................................................153.2.3AT89C52的性能特点和芯片引脚图..........................................................173.3直流电机........................................................................................184硬件设计...............................................................................................214.1开关复位电路................................................................................214.2数码管显示电路............................................................................214.3温度采集电路................................................................................224.4风扇电机驱动与调速电路...........................................................235软件设计...............................................................................................256系统调试...............................................................................................276.1系统存在的不足及展望...............................................................276.2调试过程中遇到的故障及解决方法...........................................27结束语.........................................................................................................28致谢.........................................................................................................295参考文献.....................................................................................................30附录1：电路总图..................................................................................31附录2：实物图......................................................................................32附录3：源程序......................................................................................33附录4：温控风扇清单.............