基于AT89C52单片机的智能温控风扇设计

毕业论文

郑州科技学院

专科毕业设计（论文）

题 目 智能温控风扇的设计

学生姓名

专业班级

学 号

所 在 系

指导教师

完成时间 2012年4月1日

毕业论文

智能温控风扇的设计

摘 要

基于检测技术和单片机控制技术，设计了一种智能温控调速风扇。阐述了智能温控调速风扇的工作原理、硬件设计、软件实现的过程。系统原理简单，工作稳定，成本低，具有一定的节能效果。

通过单片机的控制我们实现了电风扇的主要功能：当按下开关键时，系统初始化默认的设定温度为25度，如果外界温度高于设定温度电风扇进行运转，如果外界温度高于低于设定温度则风页不转动，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，同时按加减键退出设定功能。

电风扇的自动控制，让电风扇这一家用电器变的更智能化。克服了普通电风扇无法根据外界温度自动调节转速困难。智能电风扇的设计具有重要的现实意义。

关键词 AT89C52/温度传感器/直流电机/模拟风扇

毕业论文

Esign of intelligent temperature control fan

ABSTRACT

Based detection and single-chip control technology, the design of a smart temperature control fan speed. Explains smart temperature control fan speed control works, hardware design, software implementation process. System is simple, stable, low cost, has a certain energy-saving effect.

Controlled by the microcontroller to achieve a fan of our main functions: When you press the key to open the system initialize the default set temperature is 25 degrees, if the outside temperature is above the set temperature for fan operation, if the outside temperature is high below the set temperature in the wind does not turn the page, displaying the outside temperature. You can set the desired temperature, and also shows the set temperature, press the plus or minus key to exit the setting mode.

Automatic fan control, so fans of the home appliances become more intelligent. Unable to overcome the ordinary fan speed automatically adjusted according to outside temperature difficult. Smart fan design has important practical significance.

KEY WORDS AT89C52, temperature sensor, D.C. electric machine，Simulation of fan.

毕业论文

目 录

中文摘要.......................................................................................................Ⅰ 英文摘要.......................................................................................................Ⅱ

1 绪论 ......................................................................................................... 3

1.1 引言 .................................................................................................. 3

1.2 发展现状与应用领域 ..................................................................... 3

2 整体方案的设计 ..................................................................................... 5

2.1 系统整体设计 .................................................................................. 5

2.2 方案论证 .......................................................................................... 5

2.3 温度传感器的选择方案 ................................................................. 5

2.4 控制核心的选择.............................................................................. 6

2.3 显示电路的选择.............................................................................. 7

2.4 调速方式的选择.............................................................................. 7

2.5 控制执行部件的选择 ..................................................................... 8

3 主要原件的介绍 ..................................................................................... 9

3.1 温度传感器 ...................................................................................... 9

3.1.1 温度传感器的种类和选择 ........................................................................... 9

3.1.2 DS18B20的工作原理及其单片机的接口电路 .......................................... 9

3.2 单片机 ............................................................................................ 11

3.2.1 单片机的种类及选择 ................................................................................. 11

3.2.2 AT89C52 单片机简介 ............................................................................... 13

3.2.3 AT89C52的性能特点和芯片引脚图 .......................................................... 15

3.3 直流电机 ........................................................................................ 16

4 硬件设计 ............................................................................................... 19

4.1 开关复位电路 ................................................................................ 19

4.2 数码管显示电路............................................................................ 19

4.3 温度采集电路 ................................................................................ 20

4.4 风扇电机驱动与调速电路 ........................................................... 21

5 软件设计 ............................................................................................... 23

6 系统调试 ............................................................................................... 25

6.1 系统存在的不足及展望 ............................................................... 25

6.2 调试过程中遇到的故障及解决方法 ........................................... 25

结束语 ......................................................................................................... 26

致 谢 ......................................................................................................... 27

毕业论文

参考文献 ............................................................................ …… 此处隐藏：11675字，全部文档内容请下载后查看。喜欢就下载吧 ……