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1、外文翻译DigitalMeterforMeasuringRotationalSpeedAbstractAdigitalmeterformeasuringtherotationalspeedisintroducedinthispaper.ItiscontrolledbyanMCS-51seriessingle-chipmicrocomputer8032.Itcontainsthefollowingfeatures:rationaldesign,highaccuracy,widemeasurabilityrangeandpowerful
2、functionanddependability.Moreover,itisverynimbleandconvenienttouse.Theworkprincipleispresentedindetailinthepaperandtheblockdiagramandprogramflowchartaregivenaswell.Keyworks:digitalmeasuringapparatus;rotationspeed;single-chipmicro-computerTherotorspeedcontrolsystemofind
3、ustryisoneoftheimportantparameters.Mechanicaltachometermeasuringspeed,therotorcontactwiththemeasuredobjectmustbetogetthesynchronousspeed,throughtheinternalgearshiftinstructionafterthepointerspeedwiththesizeoftheheader.Useofmechanicaltachometermeasuredobjectcaninterfere
4、withmovement,especiallywhenmeasuredrotormassisverysmall,speedtablesontherotorpressureisnotasmalladditionalload,whichaffectsthemeasurementaccuracy.Thispaperdescribesa8032single-chipmicrocomputerasthecoretothenon-contactDigitalTachometer.1speedmeasuringprincipleThegunspe
5、ed-sensitivedeviceswithinfraredsensors,launchedbythespecializedinfrareddetectiondevices,whilereceivingreflectedbackfromthemeasuredobjectinfrared,photoelectricconversionintoelectricalpulsesthroughthesignal,doesnotaffecttherotationoftheobject.Tubesandpipesarefixedinthede
6、tectionofacceptableshelf,throughthelensfocus,semi-transparentfilmnotonlytothereflectedinfraredlightfiredrotatingobjects,theycanrotatetheobjectbythereflectedinfraredlightthroughthetranslucentmembranebackfiredformanagement.Alongthecircumferenceofarotatingbodyevenpastesom
7、ereflectionpaper,itdirectedreflectioninfraredtoreceivethereflectedacceptanceoftheinfraredcontrol.PhotovoltaicconversionshowninFigureIntheopticaltriode3DU5Caddinganappropriatebias,when3DU5Cbyinfraredirradiation,attheconductionstate,Apointforthelowlevel,3DG6end,Bpointish
8、igh;whennoinfraredradiation,thephotoelectrictransistorclosedAhighpointpresentation,so3DG6lowcollectorpointB,Bpointoft
