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GB/T 32522-2016: Acoustics -- Electroacoustic characteristics and measurements of piezoelectric spherically focusing ultrasonic transducers
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32522-2016 | English | 639 |
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Acoustics -- Electroacoustic characteristics and measurements of piezoelectric spherically focusing ultrasonic transducers
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GB/T 32522-2016
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Basic data | Standard ID | GB/T 32522-2016 (GB/T32522-2016) | | Description (Translated English) | Acoustics -- Electroacoustic characteristics and measurements of piezoelectric spherically focusing ultrasonic transducers | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | A59 | | Classification of International Standard | 17.140 | | Word Count Estimation | 32,333 | | Date of Issue | 2016-02-24 | | Date of Implementation | 2016-09-01 | | Quoted Standard | GB/T 7966-2009 | | Regulation (derived from) | National Standard Announcement No | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the electro-acoustic characteristics and measurement methods of a spherical spherical focused ultrasound transducer (hereinafter referred to as a spherical focused ultrasonic transducer) made of a spherical crown-shaped piezoelectric material. This standard applies to the operating frequency range of 1.0MHz ~ 15MHz. This standard does not apply to focusing transducers that focus transducer arrays and acoustic lenses. Note: 1.0MHz the following can refer to this standard. | GB/T 32522-2016: Acoustics -- Electroacoustic characteristics and measurements of piezoelectric spherically focusing ultrasonic transducers
---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.
Acoustics.Electroacoustic characteristics and measurements of piezoelectric spherically focused ultrasonic transducers
ICS 17.140
A59
National Standards of People's Republic of China
Acoustic Piezoelectric Focused Ultrasonic Transducer
Electro - acoustic characteristics and their measurement
Acoustics-Electroacousticcharacteristics andmeasurementsof
2016-02-24 released
2016-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
1 Scope 1
2 normative reference document 1
3 Terms and definitions 1
4 symbol 3
5 General 4
6 Measurement system requirements 5
7 Focus sound field parameter measurement 6
Radiation Conductivity Measurement
9 spherical focusing transducer to send current (voltage) response and receiver sensitivity measurement 8
Measurement of electroacoustic efficiency
Measurement of the input impedance (admittance) of the transducer
Measurement Uncertainty 10
Appendix A (normative) The average reflection coefficient of the spherical focusing sound beam incident on the water-stainless steel plane interface and the poly
Coke (half) angle of the relationship 11
Appendix B (Normative Appendix) Spherical Correction Transducer The self-calibrated diffraction correction factor in the free field with no attenuation medium
The numerical table of the Gsf (R/λ, β) function
Appendix C (informative) Diffraction correction coefficient of spherical focusing transducers in free-free medium free-range calibration Gsf
The calculation of 17
Appendix V (informative) Sound velocity and attenuation coefficient of water 21
Appendix E (informative) Guidelines for reciprocal calibration of spherical focusing transducers 22
Appendix F (informative) The relationship between the electro-acoustic parameters of the transducer and the applicability of the electro-acoustic parameters 24
Appendix G (informative) Measurement Record Table 26
Reference 28
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the Chinese Academy of Sciences.
This standard is under the jurisdiction of the National Acoustics Standardization Technical Committee (SAC/TC17).
The standard drafting unit. Shanghai Institute of Ultrasound Medicine, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Institute of Acoustics, Chinese Academy of Sciences,
China Institute of Metrology, China Shipbuilding Industry Corporation July 11 Research Institute, Jiangsu Province, Medical Device Testing Institute, Shanghai Food and Drugs
Supervisory Authority Certification and Evaluation Center, Kunshan Risheng Electronics Co., Ltd., Wuxi Haiying Electronic Medical System Co., Ltd., Ultrasonic Medical Industry
Research Center.
The main drafters of this standard. Shou Wende, Yu Lili, Hu Bing, Duan Shimei, Zhu Houqing, Yang Ping, Wang Yuebing, Hu Jimin, Bu Shuzhong, Chen Yi,
Geng Xiaoming, Zeng Deping, Xing Guangzhen, Shen Eu.
Acoustic Piezoelectric Focused Ultrasonic Transducer
Electro - acoustic characteristics and their measurement
1 Scope
This standard specifies a ball-shaped piezoelectric material made of spherical spherical ultrasonic transducer (hereinafter referred to as spherical focus ultrasonic transducer)
Electro - acoustic characteristics and their measurement methods.
This standard applies to the operating frequency range of 1.0MHz ~ 15MHz.
This standard does not apply to focus converters for focusing transducer arrays and acoustic lenses.
Note. 1.0MHz below can refer to this standard.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
Acoustics - Measurement of radiated power by ultrasonic power and its performance requirements GB/T
3 terms and definitions
The following terms and definitions apply to this document.
3.1
Free field free-field
Uniformly isotropic media, the boundary can not affect the sound field.
[GB/T 7966-2009, definition 3.2]
3.2
Radiation conductance
Gr
The ratio of the acoustic output power to the RMS (RMS) of the transducer input voltage. Used to characterize the electro-acoustic conversion characteristics of the transducer.
Note 1. The unit is Siemens (S).
Note 2. The frequency of the signal voltage (or current) is indicated.
[GB/T 7966-2009, definition 3.8]
3.3
Spherical Focus Transducer Transmit Voltage (Current) Response focusedFItransmittingvoltage (current) responsefor
sphericalyfocusingtransducer
At a given frequency, the ratio of the emitted sound pressure to the input voltage (current) on the effective radiating surface of the spherical focusing transducer in the free field.
Note. The unit is per Pa (Pa/V), Pa per (Pa/A).
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