【正文】 ll be able to realize the Settings and adjusting the initial temperature, use LCD display, when heated to set data immediately after the alarm in addition, the system through the software to realize error heated flush buttons adjustment, the security of the system to improve the reliability and stability. Key words:AT89C52 temperature sensor temperature III 目錄 摘 要 ..................................................................................................................................... I Abstract ............................................................................................................................... II 緒 論 .................................................................................................................................... 1 1 硬件電路的設(shè)計(jì) ............................................................................................................ 2 總體設(shè)計(jì) .................................................................................................................... 2 系統(tǒng)實(shí)現(xiàn)的功能 .................................................................................................... 2 系統(tǒng)實(shí)現(xiàn)方案的選擇 ............................................................................................ 2 系統(tǒng)整體結(jié)構(gòu)的布局 ............................................................................................ 2 單片機(jī) ........................................................................................................................ 3 單片機(jī)的應(yīng)用范圍 ................................................................................................ 3 單片機(jī)的分類 ........................................................................................................ 4 單片機(jī)的端口介紹 ................................................................................................ 4 DS18B20 ........................................................................................................................ 6 DS18B20 的應(yīng)用范圍 ............................................................................................. 6 DS18B20 的內(nèi)部結(jié)構(gòu) ............................................................................................. 6 DS18B20 溫度測(cè)量 電路 ......................................................................................... 6 DS18B20 的工作原理 ............................................................................................. 8 DS1302 ........................................................................................................................ 8 DS1320 的功能及結(jié)構(gòu) ........................................................................................... 8 DS1302 實(shí)時(shí)顯示時(shí)間的軟硬件 ........................................................................... 9 LM016L 顯示屏 ........................................................................................................... 9 LM016L 結(jié)構(gòu)和功能 ............................................................................................... 9 LCD 在仿真中的連接 ........................................................................................... 10 2 軟件電路設(shè)計(jì) .............................................................................................................. 12 系統(tǒng)主程序的設(shè)計(jì) .................................................................................................. 12 系統(tǒng)子程序的設(shè)計(jì) .................................................................................................. 13 IV LCD 顯示程序 ....................................................................................................... 13 DS18B20 的子程序 ............................................................................................... 14 DS18B20 初始化模塊 ........................................................................................... 15 控制器對(duì) 18B20 操作流程 .................................................................................. 16 DS18B20 讀取溫度的 程序 ................................................................................... 17 結(jié) 論 .................................................................................................................................. 19 致 謝 .................................................................................................................................. 20 參考文獻(xiàn) ............................................................................................................................ 21 附錄一 仿真實(shí)現(xiàn)圖 ..........................................................