【正文】 Graduate Thesis Subject: The water temperature control system based on Embedded System School : Kunming University of Science and Technology Faculty: School of Information Engineering and Automation Major : Computer science and technology Grade : Number: Name : Guiding Teacher’s Department: Faculty of Information Engineering and Automation,Kunming University of Science and Technology Guiding Teacher’s Name : Guiding Teacher’s Position : Lecturer 設(shè)計(jì)（論文）專用紙 I 目錄 畢業(yè)論文 ....................................................................................................................................i 目錄 ................................................................................................................................... I 摘 要 .......................................................................................................................................III Abstract.................................................................................................................................... IV 前 言 ........................................................................................................................................ V 第一章 緒 論 ............................................................................................................................1 水溫控制系統(tǒng)的應(yīng)用背景 ...............................................................................................1 水溫控制研究的意義 ......................................................................................................1 水溫控制的研究現(xiàn)狀 ......................................................................................................2 本論文的主要內(nèi)容 .........................................................................................................2 第二章 設(shè)計(jì)內(nèi)容及方案 .............................................................................................................3 單片機(jī)控制水溫方案 ......................................................................................................3 ATmega128 的特點(diǎn) ............................................................................................3 ATmega128 單片機(jī)的內(nèi)部結(jié)構(gòu) ...........................................................................6 ATmega128 的引腳說(shuō)明 .....................................................................................7 水溫傳感器方案 ............................................................................................................9 DS18B20 的特點(diǎn) ..................................................................................................9 工作方式 .............................................................................................. 10 DS18B20 的 ROM 指令 ....................................................................................... 13 顯示部分的實(shí)現(xiàn) ........................................................................................................... 14 LCD 1602 液晶顯示屏原理： .............................................................................. 14 液晶工作過(guò)程： ................................................................................................. 15 RAM 地址映射圖 ............................................................................................... 16 鍵盤(pán)設(shè)置 .................................................................................................................... 16 控制繼電器與溫度警告 ................................................................................................ 17 用戶設(shè)置保存 ............................................................................................................. 18 ATmega128 片內(nèi) EEPROM 的特點(diǎn) ...................................................................... 18 EEROPM 的原理 ................................................................................................ 19 供電模塊 .................................................................................................................... 20 第三章 軟件設(shè)計(jì)及其實(shí)現(xiàn) ....................................................................................................... 21 、主程序流程圖 ........................................................................................................... 21 各個(gè)模塊流程圖 ........................................................................................................... 22 DS18B20 流程圖 ................................................................................................ 22 鍵盤(pán)流程圖 ........................................................................................................ 26 控制模塊 ........................................................................................................... 27 顯示模塊 ........................................................................................................... 28 存儲(chǔ)器模塊 ........................................................................................................ 29 開(kāi)發(fā)工具的介紹 ........................................................................................................... 31 第四章 系統(tǒng)仿真與實(shí)現(xiàn) ........................................................................................................... 37 Proteus 仿真電路 .......................................................................................................... 37 仿真過(guò)程及軟件使用 .................................................................................................... 38 系統(tǒng)結(jié)果調(diào)試 .............................................................................................................. 38 設(shè)計(jì)（論文）專用紙 II 實(shí)際測(cè)試 ................................................