【正文】 sing chip, the latest development of the temperature sensor DS18B20 to measure temperature, LED digital display to detect the temperature, a buzzer alarm signal, RS485 chip as between the two serial port munication, remote data show. It is simple in structure, low cost, high precision and strong practicability. Solve the previous error, and low accuracy, dangerous places, plex operation and so on various issues. The following detailed introduction this 6 simple and practical based on single chip microputer remote temperature display system. Keywords: AT89S52 SCM, RS485 serial munication, BS18B20 buzzer, temperature sensing, LED digital display 設(shè)計(jì)要求 通過單片機(jī)實(shí)現(xiàn)應(yīng)用系統(tǒng)的輸入 /輸出、數(shù)據(jù)存儲、輸入通道及傳感技術(shù)、數(shù)據(jù)通信、數(shù)據(jù)采集等功能（其中之一或多個功能）； 設(shè)計(jì)方案可行，源程序可調(diào)試； 能制作出樣機(jī)（電子 0902做出實(shí)物）。 關(guān)鍵詞： AT89S52 單片機(jī)、 RS485串口通信、蜂鳴器、 BS18B20溫度傳感、 LED 數(shù)碼顯示 5 ABSTRACT With the rapid development of information technology, embedded intelligent electronic technology has perated into social production, industry control and People39。解決了以前的誤差大、精度低、危險(xiǎn)場所、操作復(fù)雜等各種問題。以 AT89S52 單片機(jī)為核心的處理芯片，采用美國最新研發(fā)的 DS18B20 溫度傳感器來測量溫度， LED 數(shù)碼管來顯示檢測到的溫度，蜂鳴器做報(bào)警信號， RS485芯片作為兩地之間的串行口通信，實(shí)現(xiàn)遠(yuǎn)程數(shù)據(jù)顯示。 1 基于單片機(jī)的遠(yuǎn)程溫度顯示 畢業(yè)設(shè)計(jì)（論文） （ 2020 屆） 學(xué) 院、系： 電子電氣工程系 專 業(yè)： 電氣自動化 學(xué) 生 姓 名： 班 級： 學(xué)號 指導(dǎo)教師姓名： 職稱 最終評定成績 航空電子電氣工程系 202002 2 目錄 摘 要 ............................................................................................................................... 4 ABSTRACT ..................................................................................................................... 5 第一章 緒 論 ................................................................................................................. 7 溫度遠(yuǎn)程控制系統(tǒng)的意義 ................................................................................... 7 溫度遠(yuǎn)程顯示系統(tǒng)的設(shè)計(jì)目的 ............................................................................. 8 第二章 方案論證與系統(tǒng)結(jié)構(gòu) ............................................................................................ 9 方案論證 ............................................................................................................ 9 單片機(jī)系統(tǒng)方面 ....................................................................................... 9 溫度傳感器 .............................................................................................. 9 通信模塊 ............................................................................................... 10 顯示模塊 ............................................................................................. 12 最后的方案確定 ..................................................................................... 12 系統(tǒng)結(jié)構(gòu)圖 .................................................................................................... 12 第三章 硬件模塊介紹 ................................................................................................... 13 AT89S52 單片機(jī)介紹 ....................................................................................... 13 AT89S52 主要功能 ................................................................................ 13 AT89S52 各引腳功能介紹： ................................................................... 14 中斷源 ................................................................................................... 18 DS18B20 溫度傳感器介紹 ................................................................................ 24 DS18B20 的主要特征： ......................................................................... 24 DS18B20 引腳結(jié)構(gòu)圖及其功能描述 ........................................................ 25 DS18B20 內(nèi)部結(jié)構(gòu) ................................................................................ 25 DS18B20 接口電路和工作時序 ............................................................... 29 RS485 串口通信 ............................................................................................ 32 RS485 基本知識 .................................................................................... 32 RS485 具有以下特點(diǎn)： ....................................................................... 33 MAX485 引腳結(jié)構(gòu)圖及接口連接圖 ......................................................... 34 RS485 接口標(biāo)準(zhǔn) .................................................................................... 35 串行數(shù)據(jù)通信兩種形式 ........................................................................ 36 LED 數(shù)碼管 ..................................................................................................... 37 LED 數(shù)碼管簡介 .................................................................................... 37 LED 數(shù)碼管顯示 ................................................................................. 38 四位七段數(shù)碼管引腳圖 ..................................................................... 39 第四章 流程圖 ............................................................................................................. 41 系統(tǒng)溫度采集流程圖 ....................................................................................... 41 通信流程圖 ..................................................................................................... 42 接收顯示報(bào)警流程框圖 .................................................................................... 43 第五章 軟件模塊介紹 ................................................................................................... 44 Keil 軟件 ...................................................................................................... 44 Keil 軟件使用方法簡介： .................................................................... 44 proteus 仿真 ....................................................................