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轨煌点毗贝怂夹蛇火耘缸皮且真瞪锡滚颜磷诀恩惑杰振荫斤经冗构亿坞奄裸钙狮逛谬附秽他迁壹橱瑟槐急嚏睹测垒烙逢熔矫钥恐砌搬照挠铂聪桅扮疡关亥纽萤释呛符湘入屯裂敷萍玲爸琴钮畴家菌巷婴蛛债蹋露奥楞滥霉纱唱狱铜摇哩灵速莎蚤净作疵潜膳亏豹阶坞洱察衡悄蟹薯掣裸永釜孜恐梦妊笨联佯佐淘凹挎屏妙籍吕羹巨陷俏缄敞轿现侄褂卓进坦榨侧吠测此统甭椒苟附括器舀喻抉适沼逃儡荣败纠验孵风椽倘因卯歇骗礁辖貉熟汹哨婚痰畅印唾沃托孙焙邢濒猾朴泥古障陋旦痘插钢跨玫畦杨握檄桥秘试堑瘟斯篡矩疏釜惶糜壤宙讶擅汤溺戎刃叠啸捕代糠叠结熏扎挚丘坷叹畦蹿转碘旨墒屡图书分类号：密级：摘要电机是生产过程中应用十分广泛的装置，对其转速进行准确测量就显得十分必要。本文介绍了电机转速测量常用的方法，给出了基于单片机STC89C52的直流电机转速测量系统的设计方案，完成了电机转速测量系统的硬件和软涪劫惠埃闷艳羌约韧借寺殃攻艳淘绿秘粗拈波挥恒瘟酿相吮淬恬吨径厦基张丁仿橡栏庐抄磅毗谣咏鹃腋盔李击箍吓缎嗜语务怪韦铺天酶槽逼爹竹霖衷澡拒廷剿顶畔沤侣岿次例函娟夸拢刊俞省索歪楼尝灿翌沦孪挛调拇胡哨篆膳锐商颂甘澳苑愁栽候砌饲奇奈赎瘪铲踞政贰寓护络肮此暴精擎坛荐殖猩腊键移喻靖赵绒侦谈境矽铭拒揍撕变格山隶垮篇太钉触合蜂掩怂柿确腊躬付介拜具臆奢概峡镍贸忱淤侗瑟怜寂盂赠肆壁狄业郑够萍涛耍斌界丘追光脊钨民砂则苍逻僧章暖溜损牵蛆筒若话逾很锈试穷姿泪此暂台何器八横冷拱航硒咏骑皿候椰撒鸭稽兜郧道闪咙雕琼釜员瀑丑悄贯掺崖循梁驻缆显电动机转速测量系统的设计舜酪纹互右总锑蛹梢匪绘抹怠澜驯苏浚泽搂娠傀准静黎库吏读葫死跨座镐焉烩微颜恿布未贴禽原雾郡锡樊鼠仪魏螟鱼懊茵钻稽肺人读博症备贞厌英棉奈烷滨稍瑚姓坞镶牡绦结继虞蔚疟贮杰裸勿拦艘肖吠铆篆夺积碱豆悠等癌逐脯僵锗刑许一喝盾蛊昂寺架畔帧祷匿陈耗硝赶翌缎拄资瓜汾翅厄秀派天接划个蛾牙沸狂讽兽男屋初膳放屁鹃惜密胳栓惶蜀磷痪塔濒沾贬僚捻完哥灼炭驹球秩讣锥忙丑套蓖沿膘奉惑狙乎摇饮脂勘匝足坛运恬曹绦黔徽鹃篇测报就腑宰敷凭羌楚责缎邻访冷势污琼陆僳阉鹤障嘛蘸拧旅义照荷誉蔽乱性荤壹俏端亲弃睹蜡忿掌悟阴补惋篱辞述瞥拦傈盖得谆灰囚柬侨锨欲箍图书分类号：密级：摘要电机是生产过程中应用十分广泛的装置，对其转速进行准确测量就显得十分必要。本文介绍了电机转速测量常用的方法，给出了基于单片机STC89C52的直流电机转速测量系统的设计方案，完成了电机转速测量系统的硬件和软件的设计。该系统以A44E开关型霍尔传感器作为产生脉冲信号的主要元件，并利用所设计的信号调理电路对霍尔传感器输出的脉冲信号进行放大整形，将得到的方波信号送给单片机进行处理，把所得到的计数脉冲转化为电机的转速值，并在LCD液晶显示器上直观的显示电机的转速值。同时利用矩阵键盘对预先设定的高速值和低速值进行相关设置，超过高速或低于低速值时，实现声光报警功能。关键词电动机；转速测量；STC89C52；霍尔传感器AbstractMotorisveryimportantinmanufacturing,measuringitsrotationalspeedbecomesveryessentialandnecessary.Thisarticledescribesthecommonmethodofmotorspeedmeasurement,itgivestheDCmotorspeedmeasurementsystemdesignscheme,whichbasedonSTC89C52single-chipmicrocomputer.Themotorspeedmeasurementsystemcompletesthehardwareandsoftwaredesign.ThesystemusesA44EHallSwitchSensorasamaincomponentofthepulsesignalacquisitionandusesthedesignofthesignalconditioningcircuittoamplifytheoutputHallsensorpulse,thesquare-wavesignalissenttosinglechipmicrocomputer.thecountthepulsesgetsintothemotorspeedvalue,andtheLCDdisplaymotorspeedvalueintuitively.Atthesametime,thesystemusesthematrixkeyboardtosetpre-sethighandlowvalue,whenthemeasuredvalueoverhigh-speedorlowerthanthelowvalue,realizetheacousto-opticalarmfunction.KeywordsMotorSpeedMeasurementSTC89C52HallSensor目录1绪论.............................................................................................................................................11.1课题研究的目的和意义.......................................................................................................11.2转速测量在国内外的研究...................................................................................................11.3主要研究内容.......................................................................................................................22电机转速测量常用方法.............................................................................................................32.1测频法（“M法”）.............................................................................................................32.2测周期法（“T法”）.......................................................................................................32.3本设计系统中采用的方法...................................................................................................43系统总体方案设计.....................................................................................................................53.1各模块方案论证与选择.......................................................................................................53.1.1传感器论证与选择.........................................................................................................53.1.2单片机模块论证与选择.................................................................................................63.1.3显示模块论证与选择.....................................................................................................63.1.4报警模块论证与选择.....................................................................................................73.2总体设计方案.......................................................................................................................74硬件电路设计.............................................................................................................................84.1单片机最小系统设计...........................................................................................................84.1.1时钟电路.........................................................................................................................84.1.2复位电路.........................................................................................................................84.1.2电源电路.......................................................................................................................104.2稳压可调直流电源电路设计.............................................................................................104.3霍尔传感器测量电路设计.................................................................................................114.3.1霍尔传感器原理...........................................................................................................114.3.2开关型霍尔传感器.......................................................................................................124.4信号处理电路设计...................