传感器英文课件

DepartmentofOpticalEngineeringZhejiangUniversityWhatinthiscourse……ExtendyourknowledgeinopticsandelectronicstoarealmofapplicationCaseStudy:exemplarymodernsensorsAlittlebitofEntrepreneurshipeducationDepartmentofOpticalEngineeringZhejiangUniversityWhatarewegoingtocover?Human/AnimalSensorsSensorPerformanceCharacteristicsStrainGaugeBasicsCapacitiveSensorsandAccelerometer(ADXL50)Piezoelectric/PressureSensorsThermometers/FlowSensorsRadiationSensors;IRSensorsInductiveandMagneticSensors(HardDiskread-writehead)SoundingMeasurementChemicalSensorsGyroscopesDepartmentofOpticalEngineeringZhejiangUniversityAlookatmodernsensorsDepartmentofOpticalEngineeringZhejiangUniversityElectronicNoseWhatcanmodernsensorsdo?Detect2,4,6-trichloroanisole(TCA)inwinearomaatpart-per-trillionlevelsinseconds(10-12)(ZnosebyElectronicSensorTechnology)AromaticcompoundsinwineDepartmentofOpticalEngineeringZhejiangUniversityElectronicNoseAvaporanalysissystemforhomelandsecurityafter9-11DetectsuspiciousgasesOlfactoryimageChemicalfingerprintsDepartmentofOpticalEngineeringZhejiangUniversityElectronicNoseHowdoestheNoselooklike?Sensorhead-BigsizeMoreworkneedstobedoneforittobedeployedinarobotPowerconsumptionChannelnumber/flexibilityDepartmentofOpticalEngineeringZhejiangUniversityIndustry’sSmallestAccelerometerSize:4x4x1.45mm3Manufacture:AnalogDeviceADXL32xfamilyofiMEMS(integratedmicroelectromechanicalsystem)accelerometersFuturepackage2x2x0.9mm3Operatingcondition:powersupplies2.7Vconsumeonly450μAcanbepower-cycledforevengreaterbatterylifeThetypicalnoiseflooris200μgperrtHz,allowingsmalltiltchangestobesensedusingthenarrowbandwidths(10Hz)typicalofhumanmotionTodayDepartmentofOpticalEngineeringZhejiangUniversityAccelerometersWhatcanmodernsensorsdo?DetectlinearaccelerationwithhighprecisionforindustrialandmilitaryapplicationsMiniatureAccelerometer,ColoumbiaResearchLabDepartmentofOpticalEngineeringZhejiangUniversityPyroelectricInfraredRadialSensorProductDescriptionModel:D203SEncapsulationType:TO-5WindowSize:4×3mm2SpectralResponse:5-14μmOutputSignal[Vp-p]:≥3300mVSensitivity:≥3100V/WDetectivity(D*):1.4×108cmHz1/2/WNoise[Vp-p]:70mVSupplyVoltage:3-15VOperatingTemp:-30-70ºCApplication:securitysystems,burglaralarms,visitoracknowledgement,lightswitchcontrolandintellectualizedtoy,etc.DepartmentofOpticalEngineeringZhejiangUniversityIntroductionWhatcanmodernsensorsdo?Detectbrainwavetocontrolcomputermouse(2006)…..DepartmentofOpticalEngineeringZhejiangUniversityIntroductionModernSensorsarepenetratingintoourlife:Medical:Angioplasty,InfusionPumps,BloodPressure,KidneyDialysis,RespiratoryAutomotive:TirePressure,MAP,FuelandEngineControlSystems,BarometricIndustrial:PortableGauges,Manometers,AltitudeMeasurements,Barometry,WaterDepthConsumer:iphone,ipad,…ieverythingDepartmentofOpticalEngineeringZhejiangUniversityMajorIndustryPlayersAnalogDevicesColumbiaResearchLabsCapacitecEG&GICSensorsEndevcoHumphreyKistlerInstrumentsLucasNovasensorMTIInstrumentsInc.PCBPiezotronicQuantumResearchGroupRaytekSensorsMagazineSiliconDesignsStrainMeasurementDevicesSummitInstrumentsThermometricsVishayIntertechnologyYellowSpringsInstrumentsDepartmentofOpticalEngineeringZhejiangUniversitySensor:ADefinitionAsensorisadevicethatreceivesastimulusandrespondswithanelectricalsignal.(maybeopticalinnearfuture)Thetermstimulus:Thestimulusisthequantity,property,orconditionthatissensedandconvertedintoelectricalsignal.Thepurposeofasensoristorespondtosomekindofaninputphysicalproperty(stimulus)andtoconvertitintoanelectricalsignalwhichiscompatiblewithelectroniccircuits.Wemaysaythatasensorisatranslatorofagenerallynon-electricalvalueintoanelectricalvalue.DepartmentofOpticalEngineeringZhejiangUniversityExample:LevelElectricalsignalTheinformationisperceivedbythesensor,whichconsistsoftwomainparts:thesighttubeonthetankandtheoperator’seye,whichgeneratesanelectricresponseintheopticnerve.Thesighttubebyitselfisnotasensor,andinthisparticularcontrolsystem,theeyeisnotasensoreither.Onlythecombinationofthesetwocomponentsmakesanarrow-purposesensor(detector),whichisselectivelysensitivetothefluidlevel.DepartmentofOpticalEngineeringZhejiangUniversityBiologicalsensors–anintroductionPhysicallimitstothemeasurementofcertainsignalTemperaturefluctuationinfiniteobjectsHeatcapacityormassAirspeed/turbulenceLimitedbyenvironmentaldisturbanceAudiobackgroundnoiselimitshearingcapabilityBroadbandaudionoiseinjungleLightdetectionNumberofphotonsNocturnalanimals’visionislimitedbyscarcityofphotonsFlickerofstarlightDepartmentofOpticalEngineeringZhejiangUniversityBiologicalsensors–anintroductionNaturalevolutionaryprocessinnatureAremarkableefficientfilter(adaptation)Somehigh-performanceexamplesChemicalsensingofpheromonesinmothsUltrasoundsensinginbats(predators)andmoths(prey)Visioninpredators:cats,birdsLow-performanceTiltsensinginhumansTactilesensingDepartmentofOpticalEngineeringZhejiangUniversityHumanSensoryCapabilitiesSystemissuesSignalconditioningWiringTimeresponseandhysteresisPac