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【英文标准名称】:Acoustics-Noiseemittedbymachineryandequipment-Measurementofemissionsoundpressurelevelsataworkstationandatotherspecifiedpositions-Engineeringmethodinanessentiallyfreefieldoverareflectingplane
【原文标准名称】:声学.机械装置及设备发出的噪声.工作地点和其它试验场所声压级的测量.反射平面上基本自由声波场的技术测试法
【标准号】:BSENISO11201-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-11-15
【实施或试行日期】:1996-11-15
【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】:声强;声学;等级(质量);噪声(环境的);操作工位;传声器;声学测量;准确度;再现性;测量特征;试验设备;试验条件;实验室试验
【英文主题词】:Acousticmeasurement;Acoustictesting;Acoustics;Airbornenoise;Definitions;Emission;Emissionmeasurement;Environment;Ergonomics;Externalnoise;Fixings;Handling;Head(anatomy);Information;Installations;Instruments;Machinenoise;Machines;Measurement;Measurementconditions;Measurementduration;Measuringbanks;Measuringenvironment;Measuringincertainity;Measuringinstruments;Measuringtechniques;Microphones;Noise;Noiseemissions;Noisemeasurements;Operatingstations;Operation;Operators;Persons;Position;Precision;Radiation;Reflective;Seats;Sitting;Soundfields;Soundintensity;Soundlevels;Soundpressure;Soundpressurelevel;Soundpropagation;Specification(approval);Status;Workingplaces
【摘要】:1GeneralThisInternationalStandardspecifiesamethodformeasuringtheemissionsoundpressurelevelsofmachineryandequipment,ataworkstationandatotherspecifiedpositionsnearby,inanessentiallyfreefieldoverareflectingplane.Aworkstationisoccu-piedbyanoperator.Itmaybelocatedinopenspaceintheroomwherethesourceoperates,orinacabfixedtothesource,orinanenclosureremotefromthesource.Oneormorespecifiedpositionsmaybelocatedinthevicinityofaworkstation,orinthevi-cinityofanunattendedmachine.Assomeofthesepositionsmaybeoccupiedoccasionallyorregularly,theyaresometimesreferredtoasbystanderpos-itions.EmissionsoundpressurelevelsaremeasuredasA-weightedand,ifrequired,C-weightedpeak,andinfrequencybands.NOTE1ThecontentsofthisandrelatedInternationalStandardsaresummarizedintable1ofISO11200:1995.ThisInternationalStandardspecifiesrequirementsfortheengineeringgradeofaccuracyonthetesten-vironmentandinstrumentation.Correctionsareap-pliedforbackgroundnoise,butnotfortheacousticenvironment.Instructionsaregivenfortheinstallationandoperationofthemachineundertestandforthechoiceofmicrophonepositionsfortheworkstationandforotherspecifiedpositions.Thepurposeofthemeasurementsistopermitcomparisonoftheper-formanceofdifferentunitsofagivenfamilyofma-chineryorequipment,underdefinedenvironmentalconditionsandstandardizedmountingandoperatingconditions.ThedataobtainedmayalsobeusedforthedeclarationandverificationofemissionsoundpressurelevelsasspecifiedinISO4871.NOTE2Atanygivenpositioninrelationtoaparticularmachine,andforgivenmountingandoperatingconditions,theemissionsoundpressurelevelsdeterminedbythemethodofthisInternationalStandardwillingeneralbelowerthanthedirectlymeasuredsoundpressurelevelsforthesamemachineinthetypicalworkroomwhereitisused.Thisisduetoreverberationandthecontributionsofothermachines.Amethodofcalculatingthesoundpressurelev-elsinthevicinityofamachineoperatingaloneinaworkroomisgiveninISO11690-3.Commonlyobserveddifferencesare1dBto5dB,butinextremecasesthedif-ferencemaybeevengreater.2TypesofnoiseandnoisesourcesThemethodspecifiedinthisInternationalStandardisapplicabletoalltypesofmachinery,bothmovingandstationary,forindoororoutdooruse.Themethodisapplicabletomachinesofallsizes,andtoalltypesofnoiseasdefinedinISO2204andISO12001.3TestenvironmentThetypeoftestenvironmentinfluencestheaccuracyofthedeterminationofemissionsoundpressurelev-els.Anessentiallyfreefieldoverareflectingplane(indoorsoroutdoors)isrequired.4SpecifiedpositionsThisInternationalStandardisapplicabletoworkstationsandotherspecifiedpositionswhereemissionsoundpressurelevelsaretobemeasured.Examplesofappropriatepositionswheremeasure-mentsmaybemadeincludethefollowing:a)workstationlocatedinthevicinityofthemachineundertest;thisisthecaseformanyindustrialmachinesanddomesticappliances;b)workstationwithinacabwhichisanintegralpartofthemachineundertest;thisisthecaseformanyindustrialtrucksandearth-movingma-chines;c)workstationwithinapartialortotalenclosure(orbehindascreen)suppliedbythemanufacturerasanintegralpartofthemachineryorequipment;d)workstationpartiallyortotallyenclosedbythemachineundertest;thissituationmaybeen-counteredwithsomelargeindustrialmachines;e)bystanderpositionsoccupiedbyindividualsnotresponsiblefortheoperationofthemachineundertest,butwhomaybeinitsimmediatevi-cinity,eitheroccasionallyorcontinuously;f)otherspecifiedpositions,notnecessarilyworkstationsorbystanderpositions
【中国标准分类号】:Z32
【国际标准分类号】:17_140_20
【页数】:24P.;A4
【正文语种】:英语