智能风扇设计

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1、2013年春季开放性实验题目名称：智能风扇调速器设计院系名称：电气工程学院专业班级：电气F1102学生姓名：陈文根学号：201123910501指导教师：马利成绩：评语：指导老师签名：日期：目录34目录1系统概述········································41.1AT89C51单片机简介···························41.2本设计任务和主要内容·························42方案论证········································42.1系统总

2、体设计··································52.2传感器部分·····································52.3主控制部分·····································6342.4调速方式的选择·································62.5温度控制模块设计·······························62.6显示电路的设计·································73硬件设计·············

3、···························73.1系统的原理方框图······························73.2元器件选型····································83.3硬件主电路····································114软件设计······34··································144.1软件设计思想及主流程···························144.2流程框图及关键代码·················

4、···········155系统调试········································295.1硬件测试·······································295.2软件测试·······································305.3整体测试·······································31设计心得··········································3234参考文献·······················

5、···················331系统概述1.1AT89C51单片机简介34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。AT89C51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，AT89C51单片机可降至0Hz的静态逻辑操作，并支持两种软件可选的节电工作模式

6、。空闲方式停止CPU的工作，但允许RAM，定时、计数器，串行通行口及中断系统继续工作。掉电方式保存RAM中的内容，但振荡器停止工作并禁止其它所有部件工作直到下一个硬件复位。1.2本设计任务和主要内容本文以AT89C51单片机为核心，通过数字温度传感器对外界环境温度进行数据采集，从而建立一个控制系统，使电风扇随温度的变化而自动调节档位，实现“温度高、风力大、温度低、风力弱”的性能。另外，通过红外发射和接收装置及按键实现各种功能的启动与关闭，并且可对各种功能实现遥控，用户可以在一定范围内设置电风扇的最低工作温度，当温度低于所设置温度时，电风扇将自动关闭，当高于

7、此温度时电风扇又将重新启动。本设计主要内容如下：(1)风速设为从低到高共5个档位，可由用户通过键盘和遥控手动设定。(2)每当温度降低2℃,则电风扇风速自动下降一个档位。(3)每当温度升高2℃,则电风扇风速自动上升一个档位。(4)用户可以设定电风扇最低工作温度，当低于该温度时，电风扇自动停转。二、方案论证传统电风扇供电采用的是220V交流电，电机转速分为几个档位，通过人工手动调整电机转速达到改变风速的目的，亦即，每改变一次风力，必然有人参与操作，这样就会带来诸多不便。本文介绍了一种基于AT89C3451单片机的智能电风扇调速器的设计，该设计巧妙利用红外线遥控

8、技术、单片机控制技术、无级调速技术和温度传感技术，把智能控制技术应