基于近场声全息的聚焦换能器声场测量方法研究

doi:10.3969/j.issn.1000-1158.2021.06.14

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Abstract High-intensity focused ultrasound (HIFU)is widely used in the medical field, but the intensity at the focus of the focused transducer is relatively large, and direct measurement is likely to cause damage to the hydrophone. In order to obtain the sound pressure at the focus indirectly, the holographic measurement surface is approximately equivalent to the sound source surface and combined with the space Fourier transform algorithm, a high-efficiency focused transducer sound field measurement method is proposed. The spherical self-focused transducer is used as the object to carry out simulation research and experimental verification of the sound field measurement method. The results show that the proposed method is twice as efficient as the integral method and the measurement error is kept within the effective range. This method can be effectively used for the focused transducer sound field measurement.

Key words： metrology sound field measurement sound field simulation spatial Fourier transform focused transducer near-field acoustic holography

Received: 18 December 2019 Published: 23 June 2021

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TB95

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	Articles by authors
	LIU Hai-nan
	ZHAO Peng
	YE Xiao-tong
	WANG Yue-bing

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LIU Hai-nan,ZHAO Peng,YE Xiao-tong, et al. Research on Sound Field Measurement Method of Focusing Transducer Based on Near-field Acoustic Holography[J]. Acta Metrologica Sinica, 2021, 42(6): 780-784.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2021.06.14 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2021/V42/I6/780

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