BS ISO 17572-2-2008 智能运输系统(ITS).地理数据库参考定位.第2部分:预编码定位参考(预编码轮廓)
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【英文标准名称】:Intelligenttransportsystems(ITS)-Locationreferencingforgeographicdatabases-Pre-codedlocationreferences(pre-codedprofile)
【原文标准名称】:智能运输系统(ITS).地理数据库参考定位.第2部分:预编码定位参考(预编码轮廓)
【标准号】:BSISO17572-2-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2009-02-28
【实施或试行日期】:2009-02-28
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:数据;数据库;数据模型;数据传送;定义;编码;地理学;信息交换;信息技术;智能运输系统;模型;汽车;参考方法;道路运输;远程信息管理;远程处理;交通业务;交通和旅客信息;运输系统;TTI
【英文主题词】:Data;Databases;Datamodels;Datatransfer;Definition;Definitions;Encoding;Geography;Informationinterchange;Informationtechnology;Intelligenttransportsystems;Models;Motorvehicles;Referencemethods;Roadtransport;Telematics;Teleprocessing;Traffic;Trafficandtravellerinformation;Transportationsystems;TTI
【摘要】:
【中国标准分类号】:A87
【国际标准分类号】:03_220_01;35_240_60
【页数】:44P;A4
【正文语种】:英语
【英文标准名称】:StandardTestMethodforElectromagneticShieldingEffectivenessofDurableRigidWallRelocatableStructures
【原文标准名称】:耐久刚性壁浮动结构电磁屏蔽功效的标准试验方法
【标准号】:ASTME1851-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:E06.53
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:electromagneticmeasurements;electromagneticshieldedenclosures;magneticfield;planewave;shieldingeffectiveness;Electromagneticshielding;Magneticshields;Planewave;Rigidwallrelocatablestructures(RWRS);Shieldingeffectiveness
【摘要】:Thisstandardprovidesmeasurementproceduresfordeterminingtheelectromagneticshieldingeffectivenessofdurablerigidwallrelocatableshieldedenclosures.Thisstandardspecifiesamethodforcomparingtheshieldedenclosureperformanceofstructuresprovidedbydifferentsuppliers.Inaddition,thisstandardiswrittentominimizevariationsinmeasuredshieldingeffectivenessatagivenfrequencyandtestpointregardlessoftestpersonnel,equipment,andtestsite.Therefore,theshieldingeffectivenessofadurablerigidwallrelocatableshieldedenclosureofanysizefromanysuppliercanbedetermined.Thisstandardspecifiesaminimumsetofmeasurementsatagivenfrequencyandaminimumsetoffrequenciestodetermineshieldingeffectiveness.SourceFields8212;Performanceofashieldedenclosureistobeassessedfortwosourcefields:magneticandplanewave.MagneticFieldMeasurements8212;Theattenuationprovidedbyashieldedenclosureisassessedbyusingalocalsourcetogeneratethenearfield.Themagneticfieldmeasurementsarespecifiedfortwonarrowfrequencybands:140to160kHzand14to16MHz.PlaneWaveMeasurements8212;Theattenuationprovidedbyashieldedenclosureisassessedbyusingalocallygenerateddistantsourceorplanewavefield.Theplanewavemeasurementsarespecifiedforthreenarrowfrequencybands:300to500MHz,900to1000MHz,and8.5to10.5GHz.1.1Thistestmethodcoversthedeterminationoftheelectromagneticshieldingeffectivenessofdurablerelocatableshieldedenclosures.1.1.1Theintendedapplicationofthistestmethodisforvirginshieldedenclosuresthatdonothaveanyequipmentorequipmentracks.Itisrecommendedthattestsbeconductedbeforetheinteriorfinishworkbegins.However,theshieldassemblyincludingallenclosurepenetrationsshallbecompletedandrequiredpenetrationprotectiondevicesshallbeinstalledinaccordancewiththedesignspecification.Thetestmethodcanalsobeusedonexistingshieldedenclosuresafterrepairworkisdonetoverifyworkmanship,butitmaybenecessarytoremoveequipmentorequipmentrackstogainaccesstoatestarea.1.1.2Thetestproceduresdelineatedinthisdocumentarecomprehensiveandmayrequireseveraldaystocompleteforaroom-sizeshieldedenclosure.Ausercanapplythistestmethodforafirstarticletestthatrequiresproofofconceptandvalidationofdesignandfabricationtechnique.AppendixX2providesguidanceonchoosingtestpointssoshieldingeffectivenesstestsonaroom-sizeshieldedenclosuremaybecompletedinaboutone-halfdayforwhichitappliestoshieldedenclosurescomingoffanassemblyline.1.2Thistestmethodisforuseinthefollowingfrequencyranges:140to160kHz,14to16MHz,300to500MHz,900to1000MHz,and8.5to10.5GHz.Specifictestfrequencieswithintheserangesarerequired(see10.1.1and10.2.1).Additionalmeasurementsintherangeof10kHzto10.1.5.1GHzmaybeperformed.Forspecificapplications,thefrequencyrangemaybeextendedfrom50Hzto40GHz.AppendixX1providesguidanceonselectingmeasurementfrequencies.1.3Thistestmethodisnotapplicabletoindividualcomponentssuchasseparatewalls,floors,ceilings,orshieldedracks.1.4Thisstandardmayinvolvehazardousmaterials,operations,equipment,oranycombination.1.5ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesinparenthesesareforinformationonly.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.I......
【中国标准分类号】:P09
【国际标准分类号】:13_280
【页数】:15P.;A4
【正文语种】:英语
【英文标准名称】:UseofSectionII,V,andIXCodeCasesSectionXI,Division1;ANNULLED
【原文标准名称】:第II节,V,和IX规范案例.第XI节,第1部分;已作废
【标准号】:ASMEN-555-2001
【标准状态】:现行
【国别】:美国
【发布日期】:2001-01-01
【实施或试行日期】:
【发布单位】:美国机械工程师协会(US-ASME)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:BoilerandPressureVessel,UseofSectionII,V,andIXCodeCasesSectionXI,Division1;ANNULLED
【中国标准分类号】:H26
【国际标准分类号】:
【页数】:
【正文语种】:英语
