一种基于磁致伸缩效应和光纤光栅的电流传感器-豆柴文库

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一种基于磁致伸缩效应和光纤光栅的电流传感器
Title:MagneticShapeMemoryEffectandFiberBraggGrating-BasedCurrentSensor
Abstract:
Inrecentyears,thedemandforrobustandaccuratecurrentsensorshasincreasedsignificantlyduetothegrowingelectricalpowergridandtheproliferationofrenewableenergysources.Thispaperpresentsanovelcurrentsensorthatcombinestheprinciplesofmagneticshapememoryeffect(MSME)andFiberBraggGrating(FBG)technology.Theintegrationofthesetwotechnologiesoffersnumerousadvantages,includinghighsensitivity,fastresponsetime,immunitytoelectromagneticinterference,andcompatibilitywithremotesensingapplications.Theproposedcurrentsensorshowsgreatpotentialinvariousfields,suchaspowersystems,electricvehicles,andenergyharvesting.
1.Introduction:
Electricityisanindispensableformofenergyinmodernsociety,andaccuratemeasurementofcurrentsplaysacrucialroleinpowersystemmonitoring,control,andprotection.Traditionalcurrentsensorsencounterchallengesintermsofcost,size,accuracy,andsafety.TheemergingtechnologiesofmagneticshapememoryeffectandfiberBragggratingprovideapromisingsolutiontoaddressthesechallenges.
2.MagneticShapeMemoryEffect(MSME):
TheMSMEreferstoaphenomenonwherecertainalloyschangetheirshapeundertheinfluenceofanexternalmagneticfield.Thiseffecthasbeenextensivelystudiedforvariousapplications,includingsensorsandactuators.Inthiscurrentsensor,anMSMEelementisusedasthesensingelement,whichrespondstothemagneticfieldgeneratedbythecurrent-carryingconductor.
3.FiberBraggGrating(FBG)Technology:
FBGtechnologyutilizesthephotosensitivityofopticalfiberstocreateperiodicrefractiveindexvariations,whichenablethereflectionofspecificwavelengthsoflight.ByembeddingFBGsinthevicinityoftheMSMEelement,thestraininducedbythechangingshapeoftheMSMEelementcanbepreciselymonitored.
4.OperationPrincipleoftheProposedCurrentSensor:
TheproposedcurrentsensorconsistsofanMSMEelement,FBG-basedstrainsensors,andalightsource-detectorsystem.Whenacurrentpassesthroughtheconductor,amagneticfieldisgenerated,causingtheMSMEelementtochangeitsshapeinproportiontothecurr