球壳换能器电声效率测量方法研究

doi:10.3969/j.issn.1000-1158.2020.12.13

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Abstract Transducer’s electroacoustic efficiency is an important parameter for the prediction of therapeutic dose of highintensity focused ultrasound systems. Based on the planar scanning technique, the radiation force balance method and the self-reciprocity method, the output ultrasonic power of the spherical shell focused transducer was measured, and the transducers excitation electric power was also measured to obtain the transducers electroacoustic efficiency. Three methods are used to measure a spherical shell transducer operating at 1.1MHz. The related expandeduncertainty of the planar scanning technique is 14.21%, the related expanded uncertainty of the radiation force balance method is 5.82%, and the related expanded uncertainty of the self-reciprocity method is 15.30%. The deviation of the electroacoustic efficiency measured by the three methods is within 4%. Experiments show that the three methods have good consistency in measuring the electroacoustic efficiency of the spherical shell focusing transducer.

Key words： metrology ultrasonic power measurement electroacoustic efficiency planar scanning technique radiation force balance self-reciprocity method spherical shell focused transducer

Received: 05 February 2020 Published: 08 December 2020

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TB95

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	Articles by authors
	LI Rong-ji
	ZHAO Peng
	WANG Yue-bing
	ZHENG Hui-feng

Cite this article:

LI Rong-ji,ZHAO Peng,WANG Yue-bing, et al. Research on Measurement Method of Electroacoustic Efficiency of Spherical Shell Transducer[J]. Acta Metrologica Sinica, 2020, 41(12): 1521-1528.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.12.13 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I12/1521

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