基于單片機控制的開關(guān)電源資料

基于單片機控制的開關(guān)電源資料,基于,單片機,控制,節(jié)制,開關(guān)電源,資料 目 錄 引言 ...........................................................................................................................................1 1 概述 ....................................................................................................................................1 1.1 課題來源及意義.................................................................................................................1 1.2 課題基本要求.....................................................................................................................2 1.3 相關(guān)背景介紹.....................................................................................................................2 2 基于單片機的數(shù)控直流電源方案設(shè)計 ...................................................................2 2.1 方案設(shè)計.............................................................................................................................3 2.1.1 方案 1：開關(guān)穩(wěn)壓電源..................................................................................................3 2.1.2 方案 2：線性穩(wěn)壓電源....................................................................................................4 2.2 方案論證.............................................................................................................................5 2.2.1 方案一分析......................................................................................................................5 2.2.2 方案二分析......................................................................................................................5 3．硬件電路設(shè)計..................................................................................................................5 3.1 主電源電路設(shè)計.................................................................................................................6 3.1.1 變壓器的選擇.................................................................................................................6 3.1.2 整流濾波電路.................................................................................................................7 3.1.3 穩(wěn)壓調(diào)壓電路.................................................................................................................8 3.1.4 擴流電路.........................................................................................................................8 3.2 副電源電路設(shè)計.................................................................................................................9 3.3 控制部分電路設(shè)計...........................................................................................................10 3.3.1 A/D 及 D/A 轉(zhuǎn)換電路....................................................................................................11 3.3.2 校正部分電路...............................................................................................................14 3.3.3 鍵盤及數(shù)碼管顯示電路...............................................................................................15 4 軟件設(shè)計 ...........................................................................................................................17 4.1 軟件介紹...........................................................................................................................17 4.1.1 Protel 99 SE...............................................................................................................18 4.1.2 Keil uVision2.............................................................................................................18 4.2 編程思想...........................................................................................................................19 4.2.1 鍵盤和數(shù)碼管掃描子程序...........................................................................................19 4.2.2 ADC0809 轉(zhuǎn)換子程序....................................................................................................20 4.2.3 DAC0832 轉(zhuǎn)換子程序....................................................................................................21 4.2.4 中斷定時處理程序設(shè)計..................................................................................................21 4.2.5 數(shù)碼顯示子程序............................................................................................................22 4.2.6 溫度傳感器的電壓校正...............................................................................................22 5 系統(tǒng)調(diào)試 ...........................................................................................................................22 5.1 硬件模塊調(diào)試...................................................................................................................22 5.1.1 電源部分技術(shù)指標測試...............................................................................................22 5.1.2 電源輸出電壓、電流范圍測試....................................................................................24 5.1.3 硬件模塊調(diào)試小結(jié).......................................................................................................25 5.2 軟件模塊調(diào)試...................................................................................................................25 5.2.1 鍵盤按鍵控制及數(shù)碼管顯示.......................................................................................25 5.2.3 數(shù)字溫度傳感器 DS1820 的電壓校正.........................................................................28 5.2.4 軟件模塊調(diào)試小結(jié).......................................................................................................28 6. 技術(shù)指標及使用方法 ...................................................................................................29 7 結(jié)論 ..................................................................................................................................29 謝辭 .........................................................................................................................................30 參考文獻 ................................................................................................................................31 附錄 .........................................................................................................................................31