【正文】 速的場(chǎng)合 , 例如在發(fā)動(dòng)機(jī)、電動(dòng)機(jī)、卷?yè)P(yáng)機(jī)、機(jī)床主軸等旋轉(zhuǎn)設(shè)備的試驗(yàn)、運(yùn)轉(zhuǎn)和控制中 ,常需要分時(shí)或連續(xù)測(cè)量和顯示其轉(zhuǎn)速及瞬時(shí)轉(zhuǎn)速。在測(cè)量范圍和測(cè)量精度方面都有極大的提高。 課題研究的目的和意義 隨著超大規(guī)模集成電路技術(shù)提高，尤其是單片機(jī)應(yīng)用技術(shù)以其功能強(qiáng)大，價(jià)格低廉的顯著特點(diǎn)，使全數(shù)字化測(cè)量轉(zhuǎn)速系統(tǒng)得以廣泛應(yīng)用。 傳統(tǒng)的電機(jī)轉(zhuǎn)速檢測(cè)多采用測(cè)速發(fā)電機(jī)或光電數(shù)字脈沖編碼器，也有采用電磁式 (利用電磁感應(yīng)原理或可變磁阻的霍爾元件等 )、電容式 (對(duì)高頻振蕩進(jìn)行幅值調(diào)制或頻率調(diào)制 )等，還有一些特殊的測(cè)速器是利用置于旋轉(zhuǎn)體內(nèi)的放射性材料來(lái)發(fā)生脈沖信號(hào)。它具有功能強(qiáng)、體積小、可靠性高、應(yīng)用簡(jiǎn)單靈活，因而使用非常廣泛，有力地推動(dòng)各行業(yè)的技術(shù)發(fā)展和更新?lián)Q代。s appearance, the tachometric survey uses generally take the monolithic integrated circuit as the core digital measuring technique I graduated from the Design of the issue is control of the intelligent use of SCM speed measuring instrument. The system is the motor speed measurement, and PC and can municate that the motor speed, and to observe the motor running the basic situation. The main design AT89C51 control as the core, by the Hall sensor, LED digital CRT, HIN232CPElevel conversion, and a RS232. Detailed measurements of the speed of the SCM system and PC and the serial munication between the microcontroller. Give full play to the performance of the SCM. This paper is to measure the speed and displayed in five LED digital pipe. The advantage of a simple hardware and software capabilities improve, measuring speed, high precision and control system reliable, costeffective and so on. KEY WORDS： MSC51 Onechip puter,Sensor,Tachometer 青島理工大學(xué)畢業(yè)論文 III 目 錄 摘 要 ................................................................................................................................ I ABSTRACT...........................................................................................................................II 前 言 ............................................................................................................................... 1 第 1 章 緒 論 ................................................................................................................. 2 課題的研究背景 .................................................................................................... 2 課題研究的目的和意義 ........................................................................................ 2 轉(zhuǎn)速測(cè)量在國(guó)內(nèi)外的研究 .................................................................................... 3 主要內(nèi)容 ................................................................................................................. 4 第 2 章 系統(tǒng)功能分析 ..................................................................................................... 5 系統(tǒng)功能概述 ........................................................................................................ 5 系統(tǒng)要求及主要內(nèi)容 ............................................................................................ 5 系統(tǒng)技術(shù)指標(biāo) ........................................................................................................ 6 第 3 章 系統(tǒng)總體設(shè)計(jì) ..................................................................................................... 7 轉(zhuǎn)速測(cè)量的一般方法 ............................................................................................. 7 硬件電路設(shè)計(jì)思路 ................................................................................................. 9 軟件設(shè)計(jì)思路 .................................................... 9 第 4 章 硬件電路設(shè)計(jì) ................................................................................................... 11 單片機(jī)模塊 ........................................................................................................... 11 處理執(zhí)行元件 ................................................................................................ 11 時(shí)鐘電路 ........................................................................................................ 14 復(fù)位電路 ........................................................................................................ 15 顯示電路 ........................................................................................................ 16 HD7279 接口 ................................................................................................... 18 鍵盤(pán)電路 ........................................................................................................ 21 霍爾傳感器簡(jiǎn)介 ................................................................................................... 22 霍爾器件概述 ................................................................................................ 22 霍爾傳感器的應(yīng)用 ........................................................................................ 22 AH41 霍爾開(kāi)關(guān) ............................................................................................... 23 青島理工大學(xué)畢業(yè)論文 IV 發(fā)送模塊 ............................................................................................................... 24 第 5 章 軟件設(shè)計(jì) ........................................................................................................... 28 單片機(jī)轉(zhuǎn)速程序設(shè)計(jì)思路及過(guò)程 ....................................................................... 28 單片機(jī)程序設(shè)計(jì)思路 .................................................................................... 28 單片機(jī)轉(zhuǎn)速計(jì)算程序 .................................................................................... 29 二 十進(jìn)制轉(zhuǎn)換程序 ...................................................................................... 30 程序設(shè)計(jì) ............................................................................................................... 32 第 6 章 系統(tǒng)調(diào)試 ........................................................................................................... 34 硬件調(diào)試 ............................................................................................................... 34 軟件調(diào)試 ............................................................................................................... 35 調(diào)試主要方法和技巧 ： ................................................................................ 35 程序調(diào)試過(guò)程 ： ............................................................................................ 36 綜合調(diào)試 .....................