资源描述：
《传感器与检测技术(双语)1》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、逝去的年代Chapter11.differencebetweenthemeaningofsensorandthatoftransducer.AtransducerisadevicethatconvertsasignalfromonephysicalformtoacorrespondingsignalhavingadifferentphysicalformAsensorisadevicethatconvertsasignaltoanelectricoutput.Sensor&transducer：sometimesaresynonymouster
2、ms.However,sensorsuggeststheextensionofourcapacitytoacquireinformationaboutphysicalquantitiesnotperceivedbyhumansensesbecauseoftheirsubliminalnatureorminuteness.Transducerimpliesthatinputandoutputquantitiesarenotthesame.Asensormaynotbeatransducer.2.Staticcharacteristicsofsen
3、sors:Range,Accuracy,Repeatability,Precise,Sensitivity,Resolution,Threshold,Linearity,Hysteresis.Accuracy（精确度）:AccuracyisthequalitythatcharacterizesthecapacityofameasuringinstrumentforgivingresultsclosetothetruevalueofthemeasuredquantityRepeatability（重复性）:Therepeatabilityisth
4、eclosenessofagreementbetweensuccessiveresultsobtainedwiththesamemethodunderthesameconditionsandinashorttimeinterval.Quantitatively,therepeatabilityistheminimumvaluethatexceeds,withaspecifiedprobability,theabsolutevalueofthedi¨erencebetweentwosuccessivereadingsobtainedunderth
5、especifiedconditions.Precise（精密度）：Precisionisthequalitythatcharacterizesthecapabilityofameasuringinstrumentofgivingthesamereadingwhenrepetitivelymeasuringthesamequantityunderthesameprescribedconditions(environmental,operator,etc.),withoutregardforthecoincidenceordiscrepancyb
6、etweentheresultandthetruevalue.Precisionimpliesanagreementbetweensuccessivereadingsandahighnumberofsignificantfiguresintheresult.Therefore,itisanecessarybutnotsufficientconditionforaccuracy.Sensitivity（灵敏度）:Theslopeofthecalibrationcurve,whetheritisconstantornotalongthemeasur
7、ementrange.逝去的年代y=f(x),thesensitivityS(xa)atpointxais:Resolution（分辨率）:theminimalchangeoftheinputnecessarytoproduceadetectablechangeattheoutputThreshold（阈值）:theminimalinputnecessarytoproduceadetectablechangeattheoutput.Linearity（线性度）：Closenessbetweenthecalibrationcurveandaspe
8、cifiedstraightline.Hysteresis（滞后）：thedifferencebetweentwooutputvaluesofsucc
