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MIL-HDBK-139, MILITARY STANDARDIZATION HANDBOOK PLASTIC, PROCESSING OF (30 JAN 1967)., The object of this handbook is to give the military design engineer information about plastic-conversion processes that will help him to achieve an optimum balance of service, economy and reliability.【英文标准名称】:Evaluationofhumanexposuretoelectromagneticfieldsfromshortrangedevices(SRDs)invariousapplicationsoverthefrequencyrange0GHzto300GHz-Part1:Fieldsproducedbydevicesusedforelectronicarticlesurveillance,radiofrequencyidentifi
【原文标准名称】:人体暴露在频率范围为0GHz～300GHz的各种设备中短程装置(SRDs)产生的电磁场中的评估.第1部分:电子产品监测、无线电频率鉴定和类似系统用装置产生的电磁场
【标准号】:IEC62369-1-2008
【标准状态】:现行
【国别】:国际
【发布日期】:2008-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC106
【标准类型】:()
【标准水平】:()
【中文主题词】:音频设备;电场;电磁场;电子仪器;场强(电);影响;极限(数学);低频;磁场;数学计算;测量;测量技术;医学科学;近场;近场测量值;人;无线电频率;无线电定位;监督(认可)
【英文主题词】:Audioequipment;Definitions;Electricfields;Electricalengineering;Electromagneticfields;Electronicinstruments;Fieldstrength(electric);Influences;Limits(mathematics);Lowfrequencies;Magneticfields;Mathematicalcalculations;Measurement;Measuringtechniques;Medicalsciences;Nearfield;Nearfieldmeasuringvalue;People;RadioFrequencyIdentification;Radiofrequencyidentifications;Radiofrequencies;Radiolocation;RFID;Surveillance(approval)
【摘要】:ThispartofIEC62369presentsproceduresfortheevaluationofhumanexposuretoelectromagneticfields(EMFs)fromdevicesusedinelectronicarticlesurveillance(EAS),radiofrequencyidentification(RFID)andsimilarapplications.Itadoptsastagedapproachtofacilitatecomplianceassessment.Thefirststage(Stage1)isasimplemeasurementagainsttheappropriatederivedreferencevalues.Stage2isamorecomplexseriesofmeasurementsorcalculations,coupledwithanalysistechniques.Stage3requiresdetailedmodellingandanalysisforcomparisonwiththebasicrestrictions.Whenassessinganydevice,themostappropriatemethodfortheexposuresituationmaybeused.AtthetimeofwritingthisInternationalStandard,electronicarticlesurveillance,radiofrequencyidentificationandsimilarsystemsdonotnormallyoperateatfrequenciesbelow1Hzorabove10GHz.EMFexposureguidelinesandstandardscancoverawiderrangeoffrequencies,soclarificationontherequiredrangeisincludedaspartoftheevaluationprocedures.Thedevicescoveredbythisdocumentnormallyhavenon-uniformfieldpatterns.Oftenthesedeviceshaveaveryrapidreductionoffieldstrengthwithdistanceandoperateundernear-fieldconditionswheretherelationshipbetweenelectricandmagneticfieldsisnotconstant.This,togetherwithtypicalexposureconditionsfordifferentdevicetypes,isdetailedinAnnexA.AnnexBcontainscomprehensiveinformationtoassistwithnumericalmodellingoftheexposuresituation.Itincludesbothhomogeneousandanatomicalmodelsaswellastheelectricalpropertiesoftissue.ThisInternationalStandarddoesnotincludelimits.Limitscanbeobtainedfromseparatelypublishedhumanexposureguidelines.Differentguidelinesandlimitvaluesmayapplyindifferentregions.Linkedintotheguidelinesareusuallymethodsforsummationacrosswiderfrequencyrangesandformultipleexposuresources.Theseshallbeused.AsimplifiedmethodforsummationofmultiplesourcesiscontainedinAnnexC.Thishastobeusedwithcareasitissimplisticandwilloverestimatetheexposure;howeveritisusefulasaguide,whentheresultsofdifferentevaluationsareindifferentunitsofmeasurewhicharenotcompatible.Differentcountriesandregionshavedifferentguidelinesforhandlingtheuncertaintiesfromtheevaluation.AnnexDprovidesinformationonthetwomostcommonmethods.AbibliographyattheendofthisstandardprovidesgeneralinformationaswellasusefulIinformationforthemeasurementofelectromagneticfields.See[1],[2],[3],[4],[5],[6]1).Similarnationalorinternationalstandardsmaybeusedasanalternative.
【中国标准分类号】:L06
【国际标准分类号】:17_240;33_050;35_240_60
【页数】:149P;A4
【正文语种】:英语