BS EN 61920-2004 红外线传输系统.大气作用
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【英文标准名称】:Infraredfreeairapplications
【原文标准名称】:红外线传输系统.大气作用
【标准号】:BSEN61920-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-04-26
【实施或试行日期】:2004-04-26
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThisInternationalStandarddescribestheclassificationofIRdevicesintogroupsandclassesinordertoidentifyandclarifyproblemscausedbymutualinterference.Mutualinterferenceiscausedbytheincreasingparallelapplicationofdifferentinfrared(IR)systems.Duetoitsphysicalcharacteristics,thepossibilityoflocallimitationisaspecialfeatureofIRradiation.Inthisstandard,thewavelengthrangefrom700nmto1600nmisconsidered.AllsystemsbasedonfreeairapplicationwhichintentionallyorunintentionallyuseIRradiationinthisrange,areincluded.ProductswhichunintentionallyemitIRradiation,suchasilluminationequipmentarenotdeemedtobeIRapplicationsystems.Theyare,however,integratedintothisstandardinordertoenablefacilityplannerstotakeintoconsiderationandtoforeseeprovisionsagainstdisturbanceofIRapplicationsystemsbysuchunintentionallyemittedradiation.TheobjectofthisstandardistopreventoratleasttominimizemutualinterferenceandtoallowthecoexistenceofdifferentIRproducts.ItisintendedtoidentifyeachIRproductbyitscharacteristics,accordingtotheclassificationcriteria.ItisnottheobjectofthisstandardtodescribetheconsequencesofinterferencebetweenIRsystemsorsafetyaspectsofopticalradiation.Allapplicationsoffibre-optictechnologyareexcluded.Inthiscontext"freeair"meansfreelyradiatedIRinindoororoutdoorapplications.IftheIRsystemsareusedforinformationtransmission,thisstandardisonlyrelevantinconnectionwiththephysicallayeroftheopensystemsinterconnection(OSI)referencemodel(ISO7498-1).NOTEThereadershouldbeawarethatariskofinterferencebetweendifferentinfraredsystemsasassessedbythisstandardisbasedongeneralparametersandthereforecannottakealltheparametersinvolvedintoaccount.Inmanycasesthepracticalresultsmaydifferfromthoseexpected,forexamplethepositioningofsenderandreceiverandthechoiceofadvancedcodinganddecodingschemes.Allthesefactorsbeyondthephysicallayermayhaveaneffectonthefinalresult.
【中国标准分类号】:L52
【国际标准分类号】:31_260
【页数】:32P;A4
【正文语种】:英语
【原文标准名称】:红外线传输系统.大气作用
【标准号】:BSEN61920-2004
【标准状态】:现行
【国别】:英国
【发布日期】:2004-04-26
【实施或试行日期】:2004-04-26
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThisInternationalStandarddescribestheclassificationofIRdevicesintogroupsandclassesinordertoidentifyandclarifyproblemscausedbymutualinterference.Mutualinterferenceiscausedbytheincreasingparallelapplicationofdifferentinfrared(IR)systems.Duetoitsphysicalcharacteristics,thepossibilityoflocallimitationisaspecialfeatureofIRradiation.Inthisstandard,thewavelengthrangefrom700nmto1600nmisconsidered.AllsystemsbasedonfreeairapplicationwhichintentionallyorunintentionallyuseIRradiationinthisrange,areincluded.ProductswhichunintentionallyemitIRradiation,suchasilluminationequipmentarenotdeemedtobeIRapplicationsystems.Theyare,however,integratedintothisstandardinordertoenablefacilityplannerstotakeintoconsiderationandtoforeseeprovisionsagainstdisturbanceofIRapplicationsystemsbysuchunintentionallyemittedradiation.TheobjectofthisstandardistopreventoratleasttominimizemutualinterferenceandtoallowthecoexistenceofdifferentIRproducts.ItisintendedtoidentifyeachIRproductbyitscharacteristics,accordingtotheclassificationcriteria.ItisnottheobjectofthisstandardtodescribetheconsequencesofinterferencebetweenIRsystemsorsafetyaspectsofopticalradiation.Allapplicationsoffibre-optictechnologyareexcluded.Inthiscontext"freeair"meansfreelyradiatedIRinindoororoutdoorapplications.IftheIRsystemsareusedforinformationtransmission,thisstandardisonlyrelevantinconnectionwiththephysicallayeroftheopensystemsinterconnection(OSI)referencemodel(ISO7498-1).NOTEThereadershouldbeawarethatariskofinterferencebetweendifferentinfraredsystemsasassessedbythisstandardisbasedongeneralparametersandthereforecannottakealltheparametersinvolvedintoaccount.Inmanycasesthepracticalresultsmaydifferfromthoseexpected,forexamplethepositioningofsenderandreceiverandthechoiceofadvancedcodinganddecodingschemes.Allthesefactorsbeyondthephysicallayermayhaveaneffectonthefinalresult.
【中国标准分类号】:L52
【国际标准分类号】:31_260
【页数】:32P;A4
【正文语种】:英语
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