【英文标准名称】:Ultrasonics-Hydrophones-Part2:Calibrationforultrasonicfieldsupto40MHz
【原文标准名称】:超音波学.水听器.第2部分:超音波场小于40MHz的校准
【标准号】:IEC62127-2-2007
【标准状态】:现行
【国别】:国际
【发布日期】:2007-08
【实施或试行日期】:
【发布单位】:国际电工委员会(IX-IEC)
【起草单位】:IEC/TC87
【标准类型】:()
【标准水平】:()
【中文主题词】:声学测量;校正;特性;定义;描述;电气工程;电声学;电医学;现场测量;频率;频率范围;水听器;测量;测量条件;测量技术;医学科学;压电的;灵敏度;声场;声压;规范(验收);超声波装置;超声波频率;超声测试;超声波学
【英文主题词】:Acousticmeasurement;Calibration;Characterisations;Characteristics;Definitions;Descriptions;Electricalengineering;Electroacoustics;Electromedicine;Fieldmeasurement;Frequencies;Frequencyranges;Hydrophones;Measurement;Measurementconditions;Measuringtechniques;Medicalsciences;Piezoelectric;Sensitivity;Soundfields;Soundpressure;Soundtransducer;Specification(approval);Ultrasonicdevices;Ultrasonicfrequencies;Ultrasonictesting;Ultrasonics
【摘要】:ThispartofIEC62127specifies:?absolutehydrophonecalibrationmethods;?relative(comparative)hydrophonecalibrationmethods.Recommendationsandreferencestoacceptedliteraturearemadeforthevariousrelativeandabsolutecalibrationmethodsinthefrequencyrangecoveredbythisstandard.Thisstandardisapplicableto?hydrophonesusedformeasurementsmadeinwaterandintheultrasonicfrequencyrangeupto40MHz;NOTE1Althoughsomephysiotherapymedicalapplicationsofmedicalultrasoundaredevelopingwhichoperateinthefrequencyrange40kHzto100kHz,theprimaryfrequencyrangeofdiagnosticimagingremainsabove2MHz.Ithasrecentlybeenestablishedthat,eveninthelattercase,thehydrophoneresponseatsubstantiallylowerfrequenciescaninfluencemeasurementsmadeofkeyacousticparameters[1].?hydrophonesemployingcircularpiezoelectricsensorelements,designedtomeasurethepulsedwaveandcontinuouswaveultrasonicfieldsgeneratedbyultrasonicequipment;NOTE2Somehydrophonescanhavenon-circularactiveelements,arisingfromslightdeviationsfromacircularstructurecaused,forexamplebyelectrodestructure,orconversely,theactiveelementscanactuallybesquares.Theclauseswithinthisstandardremainvalid,although,inthesecases,specialattentionshouldbepaidtothedirectionalresponseandtotheeffectiveradiioftheactiveelementthroughvariousaxesofrotation.?hydrophoneswithorwithoutahydrophonepre-amplifier.
【中国标准分类号】:L31
【国际标准分类号】:17_140_50
【页数】:83P.;A4
【正文语种】:英语