IEC 62127-1:2022 超声学水听器第1部分:医用超声场的测量和表征

标准编号：IEC 62127-1:2022

中文名称：超声学水听器第1部分:医用超声场的测量和表征

英文名称：Ultrasonics - Hydrophones - Part 1: Measurement and characterization of medical ultrasonic fields

发布日期：2022-03-25

标准范围

IEC 62127-1:20 22作为IEC 62127-1:20 22 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。IEC 62127-1:20 22规定了使用校准水听器的方法用于测量液体中超声医疗设备产生的声场，包括取决于待表征场的光谱内容的带宽标准和校准频率范围要求。本文件:-定义可以在物理健全的基础上测量的一组声学参数；-定义可以在某些假设下从这些测量导出的第二组参数，并且称为导出的强度参数；-定义可用于确定声压参数的测量过程；-定义可以使用校准的水听器进行声学参数测量的条件；-定义用于校正由使用具有有限带宽和有限有源元件尺寸的水听器引起的限制的程序，以及用于估计相应的不确定性的程序。IEC 62127-1:20 22取消并取代了2007年发布的第一版和修正案1:20 13。本版构成技术修订版。与上一版相比，该版本包括以下重大技术变化。a)取消了40 MHz的频率上限。b)水听器灵敏度定义已经改变，以将灵敏度识别为复值量。c)修改了窄带近似和宽带测量的程序和要求；增加了波形反卷积的细节。d)修改了空间平均校正程序。e)更新了附件D、附件E和参考书目，以支持规范性部分的变化。

IEC 62127-1:2022 is available as IEC 62127-1:2022 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 62127-1:2022 specifies methods of use of calibrated hydrophones for the measurement in liquids of acoustic fields generated by ultrasonic medical equipment including bandwidth criteria and calibration frequency range requirements in dependence on the spectral content of the fields to be characterized.
This document:
- defines a group of acoustic parameters that can be measured on a physically sound basis;
- defines a second group of parameters that can be derived under certain assumptions from these measurements, and called derived intensity parameters;
- defines a measurement procedure that can be used for the determination of acoustic pressure parameters;
- defines the conditions under which the measurements of acoustic parameters can be made using calibrated hydrophones;
- defines procedures for correcting for limitations caused by the use of hydrophones with finite bandwidth and finite active element size, and for estimating the corresponding uncertainties.
IEC 62127-1:2022 cancels and replaces the first edition published in 2007 and Amendment 1:2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition.
a) The upper frequency limit of 40 MHz has been removed.
b) Hydrophone sensitivity definitions have been changed to recognize sensitivities as complex-valued quantities.
c) Procedures and requirements for narrow-band approximation and broadband measurements have been modified; details on waveform deconvolution have been added.
d) Procedures for spatial averaging correction have been amended.
e) Annex D, Annex E and bibliography have been updated to support the changes of the normative parts.

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