【正文】 erature. Finally, temperature control system for the experimental simulation, the analysis of simulation described in this article shows that the design of temperature control system based on Microcontroller is availability and rationality. Keywords: Microcontroller； Temperature control system； Date Acquisition；Thermistor 南京師范大學(xué)泰州學(xué)院電力工程學(xué)院 基于 STC89C52單片機(jī)的多點(diǎn)溫度檢測系統(tǒng)設(shè)計(jì) III 目 錄 摘 要 .......................................................................................................................................I Abstract.................................................................................................................................... II 目 錄 .................................................................................................................................... III 第一章 緒 論 ...................................................................................................................... 1 本課題研究意義 ............................................................................................................... 1 本課題研究現(xiàn)狀 ............................................................................................................... 1 本課題設(shè)計(jì)任務(wù)及要求 .................................................................................................... 1 第二章 Proteus 仿真軟件 .................................................................................................. 3 proteus 單片機(jī)仿真軟件簡介 ............................................................................................. 3 Proteus 仿真過程說明 ........................................................................................................ 4 第三章 系統(tǒng)總體方案設(shè)計(jì) ............................................................................................... 7 系統(tǒng)總體設(shè)計(jì) ................................................................................................................... 7 方案原理說明 ................................................................................................................... 8 總體設(shè)計(jì)方案論證 ............................................................................................................ 8 第四章 硬件電路的設(shè)計(jì) ................................................................................................... 9 測溫 電路的設(shè)計(jì) ............................................................................................................... 9 熱敏電阻的選擇 ...................................................................................................... 9 測溫電路的方案論證 ............................................................................................. 10 A/D 轉(zhuǎn)化電路的設(shè)計(jì) ...................................................................................................... 12 方案論證 .............................................................................................................. 12 ADC0809 芯片的引腳功能 ..................................................................................... 13 ADC0809 與單片機(jī)的連接 ..................................................................................... 14 主控模塊 STC89C52....................................................................................................... 15 STC89C52 簡介 ..................................................................................................... 15 單片時(shí)鐘電路的設(shè)計(jì) ............................................................................................. 16 單片機(jī)復(fù)位電路設(shè)計(jì) ............................................................................................. 16 擴(kuò)展 I/O 接口芯片 .......................................................................................................... 17 方案論證 .............................................................................................................. 17 芯片引腳功能介紹 ................................................................................................ 17 8255A 與單片機(jī)連接 ............................................................................................. 18 顯示電路的設(shè)計(jì) .............................................................................................................. 18 南京師范大學(xué)泰州學(xué)院電力工程學(xué)院 基于 STC89C52單片機(jī)的多點(diǎn)溫度檢測系統(tǒng)設(shè)計(jì) IV 方案論證 與選擇 .................................................................................................... 18 報(bào)警電路的設(shè)計(jì) ............................................................................................................. 19 按鍵控制電路的設(shè)計(jì) ...................................................................................................... 20 方案論證與選擇 .................................................................................................... 20 第五章 系統(tǒng)軟件設(shè)計(jì) ...................................................................................................... 22 程序總體設(shè)計(jì) ................................................................................................................ 22 主程序流程圖 ................................................................................................................ 22 溫度檢測子程序流程圖 ................................................................................................... 23 溫度顯示子程序流程圖 .................................................................................................. 24 定時(shí)子程序流程圖 .......................................................................................................... 25 外部中斷調(diào)節(jié)溫度限值子程序流程圖 ............................................................................. 26 外部中斷選擇查看子程序流程圖 .................................................................................... 27 求平均值子程序和 BCD 轉(zhuǎn)換子程序流程圖 .................................................................... 28 第六章 硬件電路調(diào)試和軟件測試 ............................................................................... 29 測溫電路調(diào)試 ...................................