ASTM E1573-2002 用A加权和1/3倍频带声压级评价敞开式办公间掩蔽声的标准试验方法
时间:2024-05-13 05:51:40 来源: 标准资料网 作者：标准资料网 阅读：8514
【英文标准名称】:StandardTestMethodforEvaluatingMaskingSoundinOpenOfficesUsingA-WeightedandOne-ThirdOctaveBandSoundPressureLevels
【原文标准名称】:用A加权和1/3倍频带声压级评价敞开式办公间掩蔽声的标准试验方法
【标准号】:ASTME1573-2002
【标准状态】:现行
【国别】:
【发布日期】:2002
【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】:E33.02
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:噪声控制;办公室(室内);试验;建筑
【英文主题词】:A-weighted;maskingsound;one-thirdoctaveband;one-thirdoctavebandsoundpressurelevels;openoffices
【摘要】:Speechprivacyinanopenofficeisdependentonmanyfactors(seeGuideE1374foradiscussiononopenofficeacousticalconsiderations).Oneofthesefactorsisthemaskingsoundintheoffice.Withoutmaskingsoundintheopenoffice,confidentialspeechprivacyisnotpossibleatnormalvoicelevels.Thefourcriticalacousticalparametersofmaskingsoundareitsspatialuniformity,temporaluniformity,spectrumshape,andlevel.Themeasurementanddeterminationoftheseparametersareaddressedinthistestmethod.Theresultsfromthistestmethodcanbeusedtodetermineifthemaskingsoundmeetsaparticularspecification.1.1ThistestmethodspecifiestheproceduresthatcanbeusedtoevaluatethespatialandtemporaluniformityofmaskingsoundinopenofficesusingA-weightedsoundlevels.Italsospecifiestheprocedureforevaluatingthemaskingsoundspectrumandlevelusingone-thirdoctavebandsoundpressurelevels.1.2TheresultsofthistestmethodcanbeusedtodetermineifthemaskingsoundmeetsaparticularspecificationforspatialandtemporaluniformityifthatspecificationiswrittenintermsofA-weightedsoundlevelsandifthemaskingsoundmeetsaparticularspectrumshapeandlevelintheofficearea.1.3Thistestmethodmustnotbeusedtoevaluatetheacousticalenvironmentinanofficespace.Itisintendedonlytoevaluatethemaskingsoundinanoffice.Thistestmethod,forinstance,doesnotevaluatethelowfrequencyrumblenoisefoundinsomeoffices.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z32
【国际标准分类号】:91_120_20
【页数】:4P.;A4
【正文语种】:
【英文标准名称】:LPGequipmentandaccessories.Transportablerefillableweldedaluminiumcylindersforliquefiedpetroleumgas(LPG).Designandconstruction
【原文标准名称】:液化石油气(LPG)设备和附件.液化石油气(LPG)用可运输、可再充气的焊接铝瓶.设计和制造
【标准号】:BSEN13110-2012
【标准状态】:现行
【国别】:英国
【发布日期】:2012-05-31
【实施或试行日期】:2012-05-31
【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】:铝;化学成分;压缩气体;结构细节;控制方法;控制器;腐蚀试验;定义;设计;设计认证;环境效应;设备安全性;装填料;装满;气瓶;燃气技术;煤气;液化石油气;液化气瓶;材料;移动的;压力容器;可再灌充的;可重复使用;安全性;安全装置;安全性工程;产品安全性;安全性要求;安全阀;规范(验收);应力腐蚀;试验;焊接的
【英文主题词】:Aluminium;Chemicalcomposition;Compressedgases;Constructiondetails;Controlmethod;Controllers;Corrosiontests;Definitions;Design;Designcertifications;Environmentalaspects;Equipmentsafety;Filling;Filling-up;Gascylinders;Gastechnology;Gases;Liquefiedpetroleumgas;Liquidgascylinder;Materials;Mobile;Pressurevessels;Refillable;Re-usable;Safety;Safetydevices;Safetyengineering;Safetyofproducts;Safetyrequirements;Safetyvalves;Specification(approval);Stresscorrosion;Testing;Welded
【摘要】:
【中国标准分类号】:J74
【国际标准分类号】:23_020_30
【页数】:50P;A4
【正文语种】:英语
【英文标准名称】:Industrialcommunicationnetworks.Fieldbusspecifications.Applicationlayerprotocolspecification.Type4elements
【原文标准名称】:工业通信网络.现场总线规范.应用层协议规范.4型元件
【标准号】:BSEN61158-6-4-2008
【标准状态】:现行
【国别】:英国
【发布日期】:2008-06-30
【实施或试行日期】:2008-06-30
【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】:应用层;应用;总线系统;总线;电路网络;通信;计算机应用;计算机控制;控制;控制设备;控制系统;控制工艺学;数据总线;数据通信;数据交换;数据传输线;数据连接系统;数据网络;数据处理;数据服务;数据传送;数据传输控制规程;定义;数字的;数字数据;数字工程;电子数据处理;电气工程;电子仪器;电子系统;现场总线;制导系统;工业的;工业设施;信息交换;信息处理;信息技术;接口(数据处理);开放系统互连;操作技术;OSI;过程控制工程;协议规范;协议;服务;规范;规范(验收);传输媒质;传输协议
【英文主题词】:Applicationlayer;Applicationlayer(OSI);Applications;Automaticcontrolsystems;Busnetworks;Bussystems;Buses(dataprocessing);Circuitnetworks;Communication;Communicationnetworks;Communicationprocedures;Computerapplications;Computernetworks;Computerizedcontrol;Control;Controlequipment;Controlsystems;Controltechnology;Databus;Datacommunication;Dataexchange;Dataline;Datalinksystem;Datanetwork;Dataprocessing;Dataservices;Datatransfer;Datatransmission;Datatransmissioncontrolprocedures;Definitions;Digital;Digitaldata;Digitalengineering;EDP;Electronicinstruments;Electronicsystems;Englishlanguage;Fieldbus;Guidancesystems;Industrial;Industrialfacilities;Informationinterchange;Informationprocessing;Informationtechnology;Interfaces(dataprocessing);Opensystemsinterconnection;Operationaltechniques;OSI;Processcontrol;Processcontrolengineering;Protocolspecification;Protocols;Services;Specification;Specification(approval);Transmissionmedia;Transmissionprotocol
【摘要】:Thisstandardprovidescommonelementsforbasictime-criticalandnon-time-criticalmessagingcommunicationsbetweenapplicationprogramsinanautomationenvironmentandmaterialspecifictoType4fieldbus.Theterm“time-critical”isusedtorepresentthepresenceofatime-window,withinwhichoneormorespecifiedactionsarerequiredtobecompletedwithsomedefinedlevelofcertainty.Failuretocompletespecifiedactionswithinthetimewindowrisksfailureoftheapplicationsrequestingtheactions,withattendantrisktoequipment,plantandpossiblyhumanlife.ThisstandardspecifiesinteractionsbetweenremoteapplicationsanddefinestheexternallyvisiblebehaviorprovidedbytheType4fieldbusapplicationlayerintermsofa)theformalabstractsyntaxdefiningtheapplicationlayerprotocoldataunitsconveyedbetweencommunicatingapplicationentities;b)thetransfersyntaxdefiningencodingrulesthatareappliedtotheapplicationlayerprotocoldataunits;c)theapplicationcontextstatemachinedefiningtheapplicationservicebehaviorvisiblebetweencommunicatingapplicationentities;d)theapplicationrelationshipstatemachinesdefiningthecommunicationbehaviorvisiblebetweencommunicatingapplicationentities.Thepurposeofthisstandardistodefinetheprotocolprovidedto1)definethewire-representationoftheserviceprimitivesdefinedinIEC61158-5-4,and2)definetheexternallyvisiblebehaviorassociatedwiththeirtransfer.ThisstandardspecifiestheprotocoloftheType4fieldbusapplicationlayer,inconformancewiththeOSIBasicReferenceModel(ISO/IEC7498)andtheOSIapplicationlayerstructure(ISO/IEC9545).TheprincipalobjectiveofthisstandardistospecifythesyntaxandbehavioroftheapplicationlayerprotocolthatconveystheapplicationlayerservicesdefinedinIEC61158-5-4.Asecondaryobjectiveistoprovidemigrationpathsfrompreviously-existingindustrialcommunicationsprotocols.ItisthislatterobjectivewhichgivesrisetothediversityofprotocolsstandardizedinIEC61158-6.
【中国标准分类号】:L79
【国际标准分类号】:25_040_40;35_100_70;35_160;35_240_50
【页数】:38P.;A4
【正文语种】:英语