【正文】 antages such as convenient operation and high accuracy. Key words： microcontroller, RLC measuring, automatic shift 目錄 1 引言 .................................................................................................................................... 1 2 任務(wù)介紹與方案論證 ........................................................................................................ 1 任務(wù)介紹 ...................................................................................................................... 1 設(shè)計(jì)方案介紹 .............................................................................................................. 1 電阻測量方案選擇 ............................................................................................... 1 電容測量方案選擇 ............................................................................................... 2 電感測量方案選擇 ............................................................................................... 3 單片機(jī)方案選擇 ................................................................................................... 3 顯示模塊方案選擇 ............................................................................................... 3 量程切換模塊方案的選擇 ................................................................................... 4 3 主要器件介紹 .................................................................................................................... 4 ATMEGA128L 單片機(jī)的介紹 ...................................................................................... 4 液晶顯示模塊介紹 ...................................................................................................... 5 ADVFC32 壓頻簡介 .................................................................................................... 6 OP07 芯片的簡介 ........................................................................................................ 7 555 電路的結(jié)構(gòu)組成和工作原理 ............................................................................... 7 OPA820 芯片介紹 ....................................................................................................... 8 TLV3502 芯片介紹 ...................................................................................................... 8 4 硬件電路介紹 .................................................................................................................... 9 測量儀的系統(tǒng)框架 ...................................................................................................... 9 ATMEGA128L 單片機(jī)電路圖的設(shè)計(jì) .......................................................................... 9 測量電路的設(shè)計(jì) ........................................................................................................ 10 電阻測量電路設(shè)計(jì) ............................................................................................. 10 電容測量電路設(shè)計(jì) ............................................................................................. 12 電感測量電路設(shè)計(jì) ............................................................................................. 12 繼電器自動換擋電路 ................................................................................................ 13 電源設(shè)計(jì)電路 ............................................................................................................ 14 鍵盤電路 .................................................................................................................... 15 5 系統(tǒng)軟件設(shè)計(jì) .................................................................................................................. 16 軟件整體設(shè)計(jì) ............................................................................................................ 16 測量模式程序設(shè)計(jì) .................................................................................................... 17 6 系統(tǒng)調(diào)試 .......................................................................................................................... 18 硬件調(diào)試 .................................................................................................................... 18 軟件調(diào)試 .................................................................................................................... 18 系統(tǒng)測試數(shù)據(jù) ........................................................................................................... 18 測試儀器 ............................................................................................................. 18 電阻測試數(shù)據(jù) ..................................................................................................... 19 電容測試數(shù)據(jù) ..................................................................................................... 19 電感測試數(shù)據(jù) ..................................................................................................... 20 誤差分析 .................................................................................................................... 20 7 結(jié)束語 .............................................................................................................................. 20 致謝 ..................................................................................................................................... 21 參考文獻(xiàn) ............................................................................................................................. 22 附錄 ..................................................................................................................................... 23 附錄 A：作品實(shí)物圖 ...................................................................................................... 23 附錄 B：主程序 .............................................................................................................. 24 玉林師范學(xué)院本科生畢業(yè)設(shè)計(jì) 1 1 引言 目前，單片機(jī)技術(shù) [1]在智能化測量儀表 [2]中得到了越來越廣泛的應(yīng)用，利用單片機(jī)可以實(shí)現(xiàn)測量儀表的自動化和智能化，并能進(jìn)行數(shù)據(jù)分析和處理以達(dá)到儀表的高精度和高可靠性。 關(guān)鍵詞 : 單片機(jī) ， RLC 測量， 自動 換擋 The Digital RLC Measuring Inst