【正文】 畢 業(yè) 論 文 論文題目 基于單片機(jī)的溫控電風(fēng)扇設(shè)計(jì) 學(xué) 院 專 業(yè) 年 級 姓 名 指導(dǎo)教師 職 稱 講師 （ 2020 年 6 月） 1 宜春學(xué)院教務(wù)處制 基于單片機(jī)的溫控電風(fēng)扇設(shè)計(jì) 摘要 :溫控風(fēng)扇在現(xiàn)代社會中的生產(chǎn)以及人們的日常生活中都有廣泛的應(yīng)用，如工業(yè)生產(chǎn)中大型機(jī)械散熱系統(tǒng)中的風(fēng)扇、現(xiàn)在筆基本點(diǎn)腦上的廣泛應(yīng)用的智能 CPU風(fēng)扇等。本文設(shè)計(jì)了基于單片機(jī)的溫控風(fēng)扇系統(tǒng)，采用單片機(jī)作為控制 器本設(shè)計(jì)為一種溫控風(fēng)扇系統(tǒng)，具有靈敏的溫度感測和顯示 性能 ，系統(tǒng) AT89C52單片機(jī)作為控制平臺對風(fēng)扇轉(zhuǎn)速進(jìn)行控制?？捎捎脩粼O(shè)置高、低溫度值，測得溫度值在高低溫度之間時打開風(fēng)扇弱風(fēng)檔，當(dāng)溫度升高超過所設(shè)定的溫度時自動切換到大風(fēng)檔，當(dāng)溫度小于所設(shè)定的溫度時自動關(guān)閉風(fēng)扇，控制狀態(tài)隨外界溫度而定。所設(shè)高低溫值保存在溫度傳感器 DS18B20內(nèi)部 E2ROM中，掉電后仍然能保存上次設(shè)定值，性能穩(wěn)定 ,控制準(zhǔn)確。 關(guān)鍵詞 ：單片機(jī)、 DS18B溫控、風(fēng)扇、 AT89C52單片 Abstract:Temperature control fan in the modern social production and People39。s Daily life have a wide range of applications, such as industrial production and large mechanical cooling system39。s fan, now widely used on laptops smart CPU fan, etc. Design based on single chip microputer temperature control fan system, this paper USES the single chip microputer as controller design for a temperature control fan system, have sensitive temperature sensor and display function, system AT89C52 single chip microputer as control platform to control the fan speed. High and low temperature can be set by the user, the measured temperature value between high and low temperature when open the fan weak wind, when the temperature exceeds the set temperature automatically switch to the wind, when the temperature is less than the set temperature automatically shut down the fan, control state varies with temperature. Set high and low temperature values stored in internal temperature 2 sensor DS18B20 E2ROM, still can keep the power lost when the last value, stable performance and control accuracy. Key words: single chip, DS18B20, the temperature control, fan, AT89C52 single chip 目錄 前言 ....................................................................... 3 第一章 溫控電風(fēng)扇的簡介與基本系統(tǒng) .......................................... 4 .................................................... 4 ................................................ 5 第二章 溫控電風(fēng)扇的方案論證 ................................................ 6 .................................................... 6 ...................................................... 7 .................................................. 7 ...................................................... 7 3 第三章 溫控電風(fēng)扇的硬件設(shè)計(jì) ................................................ 8 .................................................... 8 DS18B20 單線數(shù)字溫度傳感器簡介 ................................ 8 AT89C52 單片機(jī)簡介 ............................................ 9 八段 LED 數(shù)碼管 .............................................. 11 ..................................................... 11 電源電路 ..................................................... 11 數(shù)碼管顯示電路 ............................................... 12 聲響、溫度采集、溫度設(shè)定以及復(fù)位電路 ......................... 12 溫控自動電路 ................................................. 13 ................................................. 14 第四章 溫控電風(fēng)扇的軟件設(shè)計(jì) ............................................... 16 ......................................... 16 ......................................... 17 程序設(shè)計(jì)原理 ................................................. 17 主要程序 ..................................................... 18 第五章 系統(tǒng)調(diào)試 ........................................................... 19 軟件調(diào)試 .......................................................... 19 按鈕 顯示部分 的調(diào)試 ........................................... 19 DS18B20溫度采集部分調(diào)試 ................................ 16 電動機(jī)調(diào)速電路部分調(diào)試 ....................................... 20 硬件調(diào)試 .......................................................... 16 按鈕 顯示部分的調(diào)試 .................................