PAGE\*MERGEFORMATII郑大自考毕业设计（论文）题目：直流电机的转速测试摘要在工程实践中，经常会遇到各种需要测量转速的场合，测量转速的方法分为模拟式和数字式两种。模拟式采用测速发电机为检测元件，得到的信号是模拟量。数字式通常采用光电编码器，霍尔元件等为检测元件，得到的信号是脉冲信号。随着微型计算机的广泛应用，特别是高性能价格比的单片机的出现，转速测量普遍采用以单片机为核心的数字式测量方法。本设计便是运用AT89C51单片机控制的智能化转速测量仪。电机在运行过程中，需要对其进行监控，转速是一个必不可少的一个参数。本系统就是对电机转速进行测量，显示电机的转速，并观察电机运行的基本状况。本设计主要用AT89C51作为控制核心，由旋转传感器TRD-2E360A、字符型LCD1602显示器、光耦合器6N137构成。本设计重点是测量速度并显示在LCD显示器上。其优点硬件是电路简单，软件功能完善，测量速度快、精度高、控制系统可靠，性价比较高等特点。PAGE\*MERGEFORMATIIIAbstractInengineeringpractice,oftenwillencounterallsortsofneedtomeasurespeedoccasions,measuringspeedmethodisdividedintoanaloganddigitaltwo.Analogusingspeedgeneratorfordetectingelement,thesignalisanalogquantity.Digitalusuallyadoptsphotoelectricencoder,hallelementasdetectingelement,thesignalisthepulsesignal.Withthewideapplicationofmicrocomputer,especiallytheperformanceandpriceistheemergenceofthesinglechipmicrocomputer,speedmeasurementgenerallybasedonsingle-chipmicrocomputerasthecoreofthedigitalmeasurementmethod.ThisdesignistouseAT89C51single-chipmicrocomputercontrolintelligentspeedmeasuringinstrument.Motorintheoperationprocess,theneedtocarryonthemonitor,speedisaindispensableaparameter.Thissystemisfortherotorspeedmeasurement,displaymotorspeed,andobservethebasicconditionofthemotorrunning.ThisdesignmainlyuseAT89C51asthecontrolcore,andtherotationsensorTRD-2e360a,charactertypeLCD1602display,opticalcoupler6n137composition.ThisdesignisfocusedonmeasurementspeedanddisplayedontheLCDdisplay.Itsadvantagesaresimplehardwarecircuit,softwarefunctionisperfect,measuringspeed,highaccuracy,thecontrolsystemisreliable,pricehighercharacteristics.PAGE\*MERGEFORMATIV目录TOC\o"1-2"\h\z\uHYPERLINK\l"_Toc358989183"摘要PAGEREF_Toc358989183\hIHYPERLINK\l"_Toc358989184"AbstractPAGEREF_Toc358989184\hIIHYPERLINK\l"_Toc358989185"目录PAGEREF_Toc358989185\hIIIHYPERLINK\l"_Toc358989186"一、设计要求PAGEREF_Toc358989186\h1HYPERLINK\l"_Toc358989187"二、系统设计思想PAGEREF_Toc358989187\h2HYPERL