湿度传感器系统毕业论文中英文资料外文翻译文献

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1、吉林农业大学本科毕业设计湿度传感器系统中英文资料外文翻译文献英文:TherightdesignforarelativehumiditysensorsystemOptimizingtheresponsecharacteristicsandaccuracyofahumiditysensorsystem1OverviewTomaketherightchoicewhenselectingarelativehumiditysensorforanapplication,itisimportanttoknowandtobeabletojudgethedecidingfactors.I

2、nadditiontolong-termstability,whichisameasureonhowmuchasensorchangesitspropertiesovertime,thesefactorsalsoincludethemeasurementaccuracyandtheresponsecharacteristicsofthesensor.Capacitivehumiditysensorsarebasedontheprinciplethatahumidity-sensitivepolymerabsorbsorreleasesmoistureasafunctio

3、noftherelativeambienthumidity.Becausethismethodisonlyaspotmeasurementatthesensorlocation,andusuallythehumidityofthesurroundingsisthedesiredquantity,thesensormustbebroughtintomoistureequilibriumwiththesurroundingstoobtainaprecisemeasurementvalue.Thisprocessisrealizedbyvarioustransportphen

4、omena(cf.thesectiontitled"Thehousingeffectontheresponsetime"),whichexhibitatimeconstant.Accuracyandresponsetimearethuscloselydependentoneachother,andthedesignofahumiditymeasurementsystembecomesachallenge.2MeasurementaccuracyThetermmeasurementaccuracyofahumiditysensorisunderstoodprimarily

5、torefertothedeviationofthevaluemeasuredbythesensorfromtheactualhumidity.Todeterminethemeasurementaccuracy,references,suchaschilledmirrorhygrometers,whoseowntolerancemustbetakenintoaccount,areused.Inadditiontothistrivialcomponent,humiditysensorsrequireagiventimeforreachingstablehumidityan

6、dtemperatureequilibrium(thehumidityisafunctionoftemperatureanddecreaseswithincreasingtemperature;adifferencebetweensensorandambienttemperatureleadstomeasurementerrors).Thisresponsetimethushasasignificanteffectonthevaluemeasuredbythesensorandthusonthedetermined10吉林农业大学本科毕业设计accuracy.Thist

7、ime-dependentcharacteristicisexplainedinmoredetailinthefollowing.3ResponsecharacteristicsandresponsetimeTheresponsecharacteristicsaredefinedbyvariousparameters.Theseare:lTheactualresponsecharacteristicsofthehumiditysensoratconstanttemperature.(1)Howquicklythesensitivepoly