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China'slasertechnologydevelopmentRetrospectandProspectLaserisLASERtranslation.LASERwasoriginallyLightamplificationbystimulatedemissionofradiationfromacombinationoftheprefixspecificterms,inourcountryhasbeentranslatedintoLaise,lasinglight,andopticalamplifierbystimulatedemission.1964,QianXuesenacademiciansproposalnamedLaser,reflectsnotonlythestimulatedemission,thescientificconnotation,andthatitisaverystrongsourceofnew,appropriate,vividandconcise,bytheChinesescientificcommunityconsensusandinuseeverFromthe1961Chinafirstlaserthathassuccessfullydevelopedthroughoutthecountry,laserresearch,teaching,productionanduseofunitsunderjointefforts,Chinahasformedacompleterange,theadvancedlevel,theapplicationoflasertechnologytoawiderangeoffields,andmadetheindustrializationofencouragingprogressforChina'sscienceandtechnology,nationaldefenseandnationaleconomyandmadepositivecontributionsintheinternationalarenahasalsChina'searlydevelopmentoflasertechnology1957,inChangchunWangShouguan,suchasChina'sfirstprofessionalopticalInstitute-theChineseAcademyofSciences(Changchun)opticalprecisioninstrumentsMachineryResearchInstitute(-raymachine).Intheoldergenerationofexpertsundertheleadershipofanumberofyoungscienceandtechnologyworkerswillgrowrapidly,DengXimingisoneoftheoutstandingrepresentatives.Asearlyasin1958theUnitedStatesphysicistXiaoluo,Townesontheprincipleoflaserfamouspaperpublishedsoon,hewillactivelypromotethisnewtechnologyresearchcarriedoutinashorttimethecombinationoftheinnovativespiritoftheyoungandmiddle-agedresearchteamproposedsubstantialincreasebrightnesslightsource,colorunits,coherenceofideasandexperimentalprogrammes.1960Worldfirstlasercomeout.Summer1961,undertheauspicesofWangJiang,China'sfirstrubylaserdeveloped.Withinashortspaceofafewyears,lasertechnologydevelopedrapidly,andproduceanumberofadvancedachievements.Varioustypesofsolids,gases,chemicalsandsemiconductorlasershavebeensuccessfullydeveloped.Inthebasicresearchandkeytechnologies,aseriesofnewconcepts,newmethodsandnewtechnologies(suchasmutationandcavityQ-to-Q,travelingwaveamplification,Re-usesystem,freeelectronoscillationsradiation,etc.)havebeenputforwardandimplemented,andmanyofthemareunique.Atthesametime,asahigh-brightness,high-directional,high-quality,andotheradvancedfeaturesofthenewlightsource,laserusedinvarioustechnicalfieldsquickly,demonstratingastrongvitalityandcompetitiveness.Communications,inSeptember1964bytelevisionpicturestransmittedlaserdemonstration,inNovember1964toachieve3to30kmcalls.Industries,inMay1965laserdrillingmachinesuccessfullyusedDrawingDieBlankingproduction,acquisitionsignificanteconomicbenefits.Medicine,June1965retinallaserweldingfortheanimalsandconductclinicaltrials.Nationaldefense,inDecember1965successfullydevelopedlaserrangefinderDiffuseReflectance(accuracyof10meters/10km),inApril1966developedremotecontrolpulselaserDopplervelocimeter.Alongwiththetheorystudyofthelaserself-mixinginterferencebecomingmaturerhigherincreasingly,theapplicationinvibration,micro-displacementandvelocitymeasurebasedonthistechnologybecomebroader.Thetechnicrequiresreal-timeacquisitionandprocessingforthelaserinterferometersignal.Thedataacquisitionandprocessingsystemoftraditionalvibrometerisstructuralcomplex,highcostanddifficulttocarry.Withthehighrunningspeedandhigh-precisioncomputing,digitalsignalprocessor(DSP)issuitableforthelaserself-mixinginterferencesignalacquisitionandprocessing.Inthispaper,thetechnologyoflaserself-mixinginterferencemodulatedbytriangularwavecurrentisresearched.ItstudiestheoreticalmodelofthevibrationsystemandusesMatlabforalgorithmssimulationanderroranalysis,alsodiscusseshowtominishtheerror.AdataacquisitionandprocessingsystemwhichadoptsTMS320LF2407ADSPfromTIasacentralprocessorisdesigned.Thedesigningandrealizationplanofsystemforhardwareisproposedindetail,includingDSPminisystem,DSPandADCinterfacecircuit,signalconditioningcircuit,LCDdisplaymoduleandDSPinterfacecircuit,RS232communicationcircuitetc,technologyonhardwaredesigningisalsodiscusssedinthedissertation.Thedesigningandrealizingprocessofsystemforsoftwareisanalyzedasfollowed,whichconsistsofapplicationofCCS,planningofCMDdocument,dataacquisitionandprocessingmodule,LCDdisplaymoduleandserialcommunicationmodulebasedonMatlab.Practiceshowsthatthisdataacquisitionandprocessingsystemcanwithstandstableoperation,satisfythedemandofthehigh-speedalternatinglaserself-mixinginterferencesignalandreconstructsthevibrationwaveformofdetectedobjects.BecauseoftheDSPtechnology,thecostofvibrometergreatlyreducedandsimplifiedstructure,easytocarry.Italsoprovidestheconditionsforthevibrometerwhichisbasedonlaserself-mixinginterferencetosmall,intelligence,andportable.Ithasawideapplicationprospect.Briefintroductionof51MCUDescriptionTheAT89C51isalow-power,high-performanceCMOS8-bitmicrocomputerwith4KbytesofFlashprogrammableanderasablereadonlymemory(PEROM).ThedeviceismanufacturedusingAtmel’shigh-densitynonvolatilememorytechnologyandiscompatiblewiththeindustry-standardMCS-51instructionsetandpinout.Theon-chipFlashallowstheprogrammemorytobereprogrammedi