【正文】 統(tǒng)研究背景 ................................................. 2 散熱原理和方式 ............................................... 2 整體方案設(shè)計(jì) .................................................... 3 系統(tǒng)整體設(shè)計(jì) ................................................ 3 方案論證 .................................................... 4 溫度傳感器的選擇 ......................................... 4 控制器的選擇 ............................................. 5 溫度顯示器件的選擇 ....................................... 5 電機(jī)及其驅(qū)動(dòng)器的選擇 ..................................... 5 各單元模塊的硬件設(shè)計(jì) ............................................ 6 系統(tǒng)主要器件簡(jiǎn)介 ........................................... 6 單線數(shù)字溫度傳感器 DS18B20 簡(jiǎn)介 .......................... 6 單片機(jī) AT89C52 .......................................... 7 風(fēng)扇直流電機(jī) ............................................ 8 芯片 MAX232 介紹 ......................................... 9 電源芯片 7805 介紹 ....................................... 9 LCD 顯示芯片 1602....................................... 10 各部分電路設(shè)計(jì) ............................................. 10 復(fù)位與晶振電路 .......................................... 10 獨(dú)立鍵盤連接電路 ........................................ 11 溫度采集電路 ............................................ 11 LCD 顯示電路 ............................................ 12 串口通信 ................................................ 12 直流電機(jī)驅(qū)動(dòng)電路 ........................................ 13 電源芯片連接電路 ........................................ 14 軟件設(shè)計(jì) ........................................................ 15 單片機(jī)程序設(shè)計(jì) ............................................ 15 總程序流程圖 .......................................... 15 溫度采集子程序流程圖 .................................. 16 系統(tǒng)仿真 ....................................................... 16 用 Keil C51 編寫程序 ....................................... 16 系統(tǒng)軟件調(diào)試 .............................................. 17 PROTEUS 軟件簡(jiǎn)介 ........................................... 17 PROTEUS 電路原理圖設(shè)計(jì) ..................................... 18 智能散熱系統(tǒng)的電路原理圖設(shè)計(jì)： ......................... 18 智能散熱核心的電路原理圖設(shè)計(jì)： ......................... 18 PROTEUS 系統(tǒng)仿真與分析 ..................................... 19 結(jié)論 ............................................................ 20 參考文獻(xiàn) ........................................................... 21 致 謝 ............................................................. 22 2 附 錄 ............................................................. 23 源程序代碼 ....................................................... 23 引 言 系統(tǒng)研究背 景 隨著科技 不斷進(jìn)步和發(fā)展， 單片機(jī) 的使用已經(jīng) 滲透到我們 日常 生活 的 各個(gè)領(lǐng)域，導(dǎo)彈的導(dǎo)航裝置，飛機(jī)上各種儀表的控制，計(jì)算機(jī)的網(wǎng)絡(luò)通訊與數(shù)據(jù)傳輸，工業(yè)自動(dòng)化過(guò)程的實(shí)時(shí)控制和數(shù)據(jù)處理，各種智能 IC 卡 的 廣泛使用， 轎車 、地鐵和公交車 的安全保障系統(tǒng)， 智能手 機(jī) 、 攝像機(jī) 等，這些 產(chǎn)品都與 開單 片機(jī)息息相關(guān) 。 關(guān)鍵詞： 散熱器 ； 單片機(jī) ； 智能控制 III Based on the Single chip Microputer Intelligent design of radiator Abstract： Radiator wide range of applications, such as notebook puters because of poor heat dissipation phenomenon of death in life. MCU with high integration, small size, strong function, high reliability, low price, etc., are widely used in industrial measurement and control, smart instrumentation, work munications, household appliances and other fields. The design in depth heat problem on the basis of design of a microcontrollerbased control of intelligent radiator, a bination of cost and performance, and other related factors, using Atmel AT89C52 microcontroller as the core. Control devices to send mands to the temperature sensor DS18B20 temperature signal acquisition and processing, and LCD display parameters were pared with the preset temperature when the temperature reaches a certain value, the microcontroller will drive the rotation of the fan for cooling treatment. When the temperature drops to a certain value, the fan stopped working. Set through the button on the temperature reference value, the use of memorychip EEPROM to save the set value, temperature intelligent control the final system Profuse under simulation run to verify that the design of this system is correct and feasible. Key Words： radiator。當(dāng)溫度下降到一定數(shù)值后，風(fēng)扇停止工作 。 本設(shè)計(jì) 在深入探討 散熱問(wèn)題 的基礎(chǔ)上 ，設(shè)計(jì)出 了 一套基于單片機(jī)控制的智能散