基于AT89C51的智能电风扇调速器的设计2

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12010届本科生毕业设计题目:基于AT89C51电风扇智能调速器的设计作者姓名:学号:系(院):专业:指导教师姓名:指导教师职称:SuZhouUniversityYear2010BachelorGraduationDesign宿州学院毕业论文基于AT89C51电风扇智能调速器的设计2Title:IntelligentfanspeedcontrolbasedonAT89C51DesignAuthor:JianchenStudentID:2006080168Department:ElectronicandElectronicEngineeringMajor:ElectronicEngineeringandAutomationInstructor:LiguangyuProfessionalTitle:LecturerJanuary15th,2010摘要本文介绍了一种基于AT89C51单片机的电风扇智能调速器的设计,该设计以AT89C51控制器为核心,巧妙利用温度传感器电路,及时而准确的采集环境温度,利用双向晶闸管对电机进行无级调速,把智能控制技术用于家用电器的控制中,用人体周围的环境温度对风扇进行温控。关键词:单片机;红外遥控;温度传感器;智能控制。宿州学院毕业论文基于AT89C51电风扇智能调速器的设计3ABSTRACTThispaperpresentsanintelligentspeedregulatorbasedonAT89C51single-chipmicrocomputer.Itusessurroundingtemperaturetoregulatethespeedofanelectricfan.Abi-directionalthyristorisusedforthesteplessspeed.Keywords:Single-chipmicrocomputer;temperaturesensor;infraredremotecontrol;intelligentcontrol.目录绪论................................................................................................................................................................51系统概述................................................................................................................................................61.1AT89C51单片机简介............................................................................................................61.2本设计任务和主要内容.........................................................................................................6宿州学院毕业论文基于AT89C51电风扇智能调速器的设计42系统原理................................................................................................................................................72.1系统总体设计...........................................................................................................................72.2控制装置原理...........................................................................................................................73系统主要硬件电路.............................................................................................................................83.1温度检测电路和显示电路....................................................................................................83.1.1DS18B20的温度处理方法.....................................................................................83.1.2温度传感器和显示电路组成.................................................................................93.2控制装置原理.........................................................................................................................103.2.1电机调速原理..........................................................................................................103.2.2电机控制模块设计.................................................................................................113.3遥控电路..................................................................................................................................123.3.1发射电路....................................................................................................................123.3.2接收电路和控制电路.............................................................................................133.4控制键电路..............................................................................................................................134系统软件设计.....................................................................................................................................154.1主程序.......................................................................................................................................154.2数字温度传感器模块和显示子模块................................................................................164.3电机调速与控制子模块.............................................................................................................17结束语.........................................................................................................................................................19参考文献....................................................................................................................................................20附录一.........................................................................................................................................................21附录二.........................................................................................................................................................25绪论近些年来,随着空调行业的迅速发展,空调价格的大幅度“跳水”,电风扇行业曾被普遍认为是“夕阳产业”。其实并非如此,市场人士称,家用电风扇并没有随着空调的普及而淡出市场,近两年反而出现了市场销售复苏的态势。其主要原因:一是风扇和空调的降温效果不同;(空调有强大的制冷功能,可以快速有效地降低环境温度,但电风扇的风更温和,更加适合老人儿童和体质较弱的人使用。)二是电风扇有价格优势,价格便宜而且相对省电,安装和使用都非常简单。宿州学院毕业论文基于AT89C51电风扇智能调速器的设计5传统电风扇多采用机械方式进行控制,功能少,噪音大,各档的风速变化大。随着科技的发展和人们生活水平的提高,家用电器产品趋向于自动化、智能化、环保化和人性化,使得由微机控制的智能电风扇得以出现。1系统概述1.1AT89C51单片机简介AT89C51是美国ATMEL公司生产的低电压、高性能CMOS8位单片机,片内4bytes的可反复擦写的只读程序存储器(PEROM)和128bytes的随机存取数据存储器(RAM),器件采用ATMEL公司的高密度、非易失性存储技术生产,兼容标准MCS-51指令系统,片内置用8位中央处理器(CPU)和Flash存储单元,功能强大。AT89C51单片机可灵活应用于各种控制领域。宿州学院毕业论文基于AT89C51电风扇智能调速器的设计6AT89C51单片机提供以下标准功能:4K字节Flash闪速存储器,128字节内部RAM,32个I/O口线,两个16位定时、计数器,一个5向量两级中断结构,一个全双工串行通信口,片内振荡器及时钟电路。同时,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