【英文标准名称】:Maritimenavigationandradiocommunicationequipmentandsystems.Digitalinterfaces.Part3:Serialdatainstrumentnetwork
【原文标准名称】:海上导航和无线电通信设备及系统.数字接口.第3部分:串联数据设备网络
【标准号】:IEC61162-3Edition1.1-2010
【标准状态】:现行
【国别】:国际
【发布日期】:2010-11-01
【实施或试行日期】:2010-11-01
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC80
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:ThispartofIEC61162isbasedupontheNMEA2000standard.TheNMEA2000standardcontainstherequirementsfortheminimumimplementationofaserial-datacommunicationsnetworktointerconnectmarineelectronicequipmentonboardvessels.Equipmentdesignedtothisstandardwillhavetheabilitytosharedata,includingcommandsandstatus,withothercompatibleequipmentoverasinglesignallingchannel.Datamessagesaretransmittedasaseriesofdataframes,eachwithrobusterrorcheckconfirmedframedeliveryandguaranteedlatencytimes.Astheactualdatacontentofadataframeisatbest50%ofthetransmittedbits,thisstandardisprimarilyintendedtosupportrelativelybriefdatamessages,whichmaybeperiodic,transmittedasneeded,oron-demandbyuseofquerycommands.Typicaldataincludesdiscreteparameterssuchaspositionlatitudeandlongitude,GPSstatusvalues,steeringcommandstoautopilots,finiteparameterlistssuchaswaypoints,andmoderatelysizedblocksofdatasuchaselectronicchartdatabaseupdates.Thisstandardisnotnecessarilyintendedtosupporthigh-bandwidthapplicationssuchasradar,electronicchartorothervideodata,orotherintensivedatabaseorfiletransferapplications.ThisstandarddefinesallofthepertinentlayersoftheInternationalStandardsOrganisationOpenSystemsInterconnect(ISO/OSI)model,fromtheapplicationlayertothephysicallayer,necessarytoimplementtherequiredIEC61162-3networkfunctionality.Thisstandarddefinesdataformats,networkprotocol,andtheminimumphysicallayernecessaryfordevicestointerface.SOLASapplicationsshallemployredundantdesigns(forinstancedualnetworks,redundantnetworkinterfacecircuits)toreducetheimpactofsinglepointfailures.TheNMEA2000standardprovidesthefundamentaltoolsandmethodstosupportredundantequipment,busesandmessaging.Specificshipboardinstallationdesignsarebeyondthescopeofthisstandard,howeversomeguidanceisgiveninAnnexA.
【中国标准分类号】:U66
【国际标准分类号】:47_020_70
【页数】:22P.;A4
【正文语种】:


【英文标准名称】:Geographicinformation-Qualityprinciples.
【原文标准名称】:地理信息.质量原则
【标准号】:NFZ52-018-2005
【标准状态】:现行
【国别】:法国
【发布日期】:2005-08-01
【实施或试行日期】:2005-08-20
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:A76
【国际标准分类号】:35_240_70
【页数】:41P;A4
【正文语种】:其他