【正文】 ............................5 本設(shè)計(jì)的主要任務(wù) ..............................................................................................................................6第 2 章 總體方案設(shè)計(jì) ............................................................................................................................................7 系統(tǒng)工作原理 .........................................................................................................................................7 傳感器的測(cè)試原理 ............................................................................................................................7 單片機(jī)的引腳描述及片外結(jié)構(gòu)圖 ................................................................................................8 測(cè)試系統(tǒng)的組成以及機(jī)械結(jié)構(gòu) ................................................................................................10 系統(tǒng)中單片機(jī)的選用及設(shè)計(jì) ....................................................................................................11 單片機(jī)應(yīng)用系統(tǒng)的概述 .................................................................................................................11 單片機(jī)的選用 .....................................................................................................................................13 顯示器的設(shè)計(jì) .......................................................................................................................................14 鍵盤(pán)的設(shè)計(jì) ............................................................................................................................................16 驅(qū)動(dòng)部分設(shè)計(jì) .......................................................................................................................................18 伺服系統(tǒng)的組成 ................................................................................................................................18 伺服系統(tǒng)驅(qū)動(dòng)的驅(qū)動(dòng)部分設(shè)計(jì) ..............................................................................................18第 3 章 硬件電路的設(shè)計(jì) ..........................................................................................................................................23 檢測(cè)元件 ...............................................................................................................................................23 系統(tǒng)的檢測(cè)元件 ..............................................................................................................................23 測(cè)量轉(zhuǎn)換電路 .....................................................................................................................................23 A/D 轉(zhuǎn)換器 ...........................................................................................................................................25 邏輯電路 ...............................................................................................................................................274 鎖存器 74LS373.............................................................................................................................27 片外數(shù)據(jù)存儲(chǔ)器 6264...............................................................................................................28 片外程序存儲(chǔ)器 2764(ROM )..............................................................................................28 TPΜP40A 微型打印機(jī) ............................................................................................................29 BCD 撥碼盤(pán) .....................................................................................................................................30 芯片 8155 的接口及主要功能 .................................................................................................34 芯片 AD522...........................................................................................................................................36第 4 章 系統(tǒng)軟件設(shè)計(jì) ..........................................................................................................................................38 按鍵識(shí)別程序 ......................................................................................................................................38 鍵盤(pán)/顯示系統(tǒng)的執(zhí)行設(shè)計(jì) ........................................................................................................39 步進(jìn)電機(jī)的控制的流程圖的設(shè)計(jì) ..........................................................................................41 控制打印機(jī)的流程圖 ...................................................................................................................43 反轉(zhuǎn)復(fù)位流程圖 ..............................................................................................................................44 過(guò)載判斷流程圖 .................................................................................................................................45 過(guò)載判定流程圖 ..............................................................................................................................46結(jié)論 ..............................................................................................................................................................................47參考文獻(xiàn) ......................................................................................................................................................................48致謝 ..............................................................................................................................................................................49附錄 ..............................................................................................................................................................................50一、步進(jìn)電機(jī)驅(qū)動(dòng)程序 ..........................................................................................................................50二、鍵盤(pán)掃描子程序： ..........................................................................................................................51三、求鍵值子程序： ................................................................................................................................