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.
刘海楠, 赵 鹏, 叶晓同, 王月兵. 基于近场声全息的聚焦换能器声场测量方法研究[J]. 计量学报, 2021, 42(6): 780-784.
LIU Hai-nan, ZHAO Peng, YE Xiao-tong, WANG Yue-bing. Research on Sound Field Measurement Method of Focusing Transducer Based on Near-field Acoustic Holography. Acta Metrologica Sinica, 2021, 42(6): 780-784.
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2021, Vol. 42 
