YY/T 0865.2-2018 English PDF

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YY/T 0865.2-2018: Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz
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YY/T 0865.2-2018	1484	Add to Cart	5 days	Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz	Valid

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Basic data

Standard ID: YY/T 0865.2-2018 (YY/T0865.2-2018)
Description (Translated English): Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz
Sector / Industry: Medical Device & Pharmaceutical Industry Standard (Recommended)
Classification of Chinese Standard: C41
Classification of International Standard: 11.040.50
Word Count Estimation: 78,752
Date of Issue: 2018-12-20
Date of Implementation: 2020-01-01
Regulation (derived from): State Drug Administration Announcement No.97 of 2018
Issuing agency(ies): State Drug Administration

YY/T 0865.2-2018: Ultrasonics - Hydrophones - Part 2: Calibration for ultrasonic fields up to 40 MHz

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Ultrasonics-Hydrophones-Part 2. Calibration for ultrasonic fields up to 40 MHz ICS 11.040.50 C41 People's Republic of China Pharmaceutical Industry Standard Ultrasonic hydrophone Part 2. Ultrasonic field below 40MHz Calibration of hydrophone (IEC 62127-2..2013, IDT) 2018-12-20 release 2020-01-01 implementation Issued by the State Drug Administration

Contents

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 Terms, definitions and symbols 2 4 Symbol Table 7 5 Overview of calibration steps 9 6 General requirements for hydrophone calibration systems 11 7 Electrical requirements 13 8 Preparation of hydrophones 15 9 Free field reciprocal calibration 15 10 Plane scanning free field calibration 16 11 Free-field calibration using optical interferometry 19 12 Calibration using comparison method of standard hydrophone 19 Appendix A (informative appendix) Evaluation of measurement uncertainty for calibrating hydrophones in free field 22 Appendix B (informative appendix) Characteristics of PVDF polymer sensors in high sound intensity ultrasonic fields 24 Appendix C (informative appendix) Amendment of electrical load 27 Appendix D (informative appendix) absolute calibration of hydrophones using the planar scanning method 28 Appendix E (Informative) Water Characteristics 34 Appendix F (informative appendix) Absolute calibration of hydrophones using optical interferometry below 40 MHz 36 Appendix G (Informative Appendix) Waveform Concept 44 Appendix H (Informative Appendix) Requirements and Brief Review of Time Delay Spectroscopy 51 Appendix I (informative appendix) Determination of hydrophone phase response 54 Appendix J (informative appendix) Considerations on the maximum size of hydrophone sensitive components 58 Appendix K (informative appendix) Reciprocal calibration method for two transducers 60 References 71

Foreword

YY/T 0865 "Ultrasonic Hydrophone" is divided into three parts. --- Part 1. Measurement and characterization of medical ultrasound fields below 40MHz; --- Part 2. Calibration of hydrophones for ultrasonic fields below 40MHz; --- Part 3. Characteristics of hydrophones with ultrasonic fields below 40MHz. This part is part 2 of YY/T 0865. This section was drafted in accordance with the rules given in GB/T 1.1-2009. Please note that some content of this document may involve patents. The issuer of this document does not assume responsibility for identifying these patents. The translation method used in this section is equivalent to the use of IEC 62127-2..2013 "Ultrasonic Hydrophone Part 2. Ultrasonic Field Below 40MHz" Calibration of hydrophones. This part incorporates the amendments of IEC 62127-2..2007/AMD1..2013, and the terms involved in these amendments have been adopted in their The vertical double line (‖) in the margin of the outer margin is marked. The Chinese documents that have a consistent correspondence with the normatively cited international documents in this section are as follows. --- GB/T 2900.86-2009 electrical engineering term acoustics and electroacoustics (IEC 60050-801..1994, IDT); --- GB/T 7966-2009 Acoustic ultrasonic power measurement radiant force balance method and performance requirements (IEC 61161..2006, IDT); --- GB/T 20249-2006 Definition and measurement method of emission field characteristics of acoustic focusing ultrasonic transducer (IEC 61828. 2001, IDT); --- YY/T 0865.1-2011 Ultrasonic hydrophone Part 1. Measurement and characterization of medical ultrasound fields below 40MHz (IEC 62127-1..2007, IDT); --- YY/T 0865.3-2013 Ultrasonic hydrophone Part 3. Characteristics of hydrophone with ultrasonic field below 40MHz (IEC 62127-3..2007, IDT). This part of the IEC 62127-2..2013 has made only a very small number of editorial changes, which do not affect the degree of consistency. This part is proposed by the State Drug Administration. This part is under the jurisdiction of the Medical Ultrasound Equipment Sub-Technical Committee (SAC/TC10/SC2) of the National Medical Appliance Standardization Technical Committee. This section was drafted by. China Shipbuilding Industry Corporation 715 Research Institute, Hubei Medical Device Quality Supervision and Inspection Institute, Institute of Acoustics, Chinese Academy of Sciences. The main drafters of this section. Huang Yongjun, Jiang Shilin, Niu Fengqi, Wang Shiquan, Chen Yi.

Introduction

In the ultrasonic field in the liquid medium, the spatial and temporal distribution of sound pressure is usually measured with a miniature hydrophone. But hydrophones are not absolute measurements The equipment needs to be calibrated. The purpose of this part of IEC 62127 is to specify the accuracy in the ultrasonic frequency band, that is, the frequency range of 20kHz ~ 40MHz The calibration method used to determine the hydrophone response. In this section, the main purpose of hydrophones is to measure the ultra-radiation of medical diagnostic equipment in water. Sound field. In order to reliably characterize the acoustic parameters of the sound field in which it is located, hydrophones are required to function within the above frequency range. Especially, in order to charge To characterize medical ultrasound equipment separately, the frequency band above 15MHz is crucial, the main reason is that the nonlinear propagation causes high The frequency component increases. In addition, the number of medical ultrasound systems (especially intracavity probes) using frequencies above 15MHz is also increasing. In recent years, it has been shown that in order to reliably measure the negative peak (diastolic) sound pressure, it is also necessary to determine the frequency of the hydrophone below 0.5MHz Segment response. The term "hydrophone" can be used broadly, but here it is understood as a miniature piezoelectric ceramic hydrophone. In today's medical ultrasound This type of hydrophone is used in various fields, especially in quantitatively characterizing the sound field structure of medical diagnostic equipment. About other categories Type of pressure sensor, for example, using optical fiber, some requirements of this section can be applied, the other is not applicable. In the future, if other types When the importance of "hydrophone" in sound field measurement practice increases, this part will revise a new version or release an independent standard to discuss its characteristics And calibration. Note. This section covers the ultrasonic frequency range of 20kHz ~ 40MHz. About hydrophone characteristics (IEC 62127-3) and hydrophone use (IEC 62127-1) The standards have been transformed and published, both of which are part of the hydrophone standard maintenance action plan. The purpose of this plan is to reconstruct and integrate All existing hydrophone standards. This will eventually form a unified standard covering the entire field of hydrophone practical applications. Ultrasonic hydrophone Part 2. Ultrasonic field below 40MHz Calibration of hydrophone

1 Scope

This part of YY/T 0865 specifies. --- Absolute calibration method of hydrophone; --- Relative (comparative) calibration method for hydrophones. Various relative and absolute calibration methods within the frequency range covered by this section are proposed and listed for reference. This section applies to. --- Hydrophone used in water and in the frequency range below 40MHz. Note 1. In the field of medical ultrasound, although some physiotherapy medical applications working in the frequency range of 40kHz to 100kHz are constantly developing, imaging diagnostics The main frequency range remains above 2MHz. It has recently been confirmed that even in the latter case (frequency above 2MHz), the hydrophone The response of the lower frequency band will also affect the measurement of key acoustic parameters [1]. --- A hydrophone made of circular sensitive elements, designed to measure the pulse wave or continuous wave sound field generated by ultrasonic equipment Note 2. Some hydrophones may have non-circular sensitive elements, such as a slight deviation from the circular structure due to the electrode structure, or vice versa. The sensing element is actually square. Even so, the provisions in this section are still valid, but special attention should be paid to the directional response and the passage of each rotation axis The effective radius of the sensitive element. --- Hydrophone with or without hydrophone preamplifier.

2 Normative references

The following documents are essential for the application of this document. For dated references, only the dated version applies to this article Pieces. For the cited documents without date, the latest version (including all amendments) applies to this document. IEC 60050-801 International Electrotechnical Vocabulary-Part 801. Acousticsandelectroacoustics) IEC 60565..2006 Calibration of underwater acoustic hydrophones in the frequency range of 0.01 Hz to 1 MHz (Underwateracoustics- Hydrophones-Calibrationinthefrequencyrange0.01Hzto1MHz) IEC 61161 Acoustic Ultrasonic Power Measurement Radiation Force Balance Method and Performance Requirements (Ultrasonics-Power measurement-Radiationforcebalancesandperformancerequirements) IEC 61828 Definition and measurement method of emission field characteristics of acoustic focused ultrasonic transducers (Ultrasonics-Focusingtrans- ducers-Definitionsandmeasurementmethodsforthetransmittedfields) IEC 62127-1..2007 Ultrasonic hydrophones Part 1. Measurement and characterization of medical ultrasound fields below 40 MHz (Ul- trasonics-Hydrophones-Part 1. Measurementandcharacterizationofmedicalultrasonicfieldsupto 40MHz) Amendment 1..2013 IEC 62127-3 Ultrasonic hydrophone Part 3. Characteristics of hydrophones for ultrasonic fields below 40 MHz (Ultrasonics-Hy- drophones-Part 3. Propertiesofhydrophonesforultrasonicfieldsupto40MHz) ......

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