Ultrasonic power measurement system based on acousto-optic interaction

被引:8
作者
He, Liping [1 ]
Zhu, Fulong [1 ]
Chen, Yanming [2 ]
Duan, Ke [1 ]
Lin, Xinxin [1 ]
Pan, Yongjun [1 ]
Tao, Jiaquan [1 ]
机构
[1] Huazhong Univ Sci & Technol, Inst Microsyst, Sch Mech Sci & Engn, 1037 Luoyu Rd, Wuhan 430074, Hubei, Peoples R China
[2] Hubei Inst Measurement & Testing Technol, Wuhan 430223, Hubei, Peoples R China
关键词
LIGHT-DIFFRACTION; TRANSDUCERS; FIELDS; TOMOGRAPHY; WAVES;
D O I
10.1063/1.4948731
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
Ultrasonic waves are widely used, with applications including the medical, military, and chemical fields. However, there are currently no effective methods for ultrasonic power measurement. Previously, ultrasonic power measurement has been reliant on mechanical methods such as hydrophones and radiation force balances. This paper deals with ultrasonic power measurement based on an unconventional method: acousto-optic interaction. Compared with mechanical methods, the optical method has a greater ability to resist interference and also has reduced environmental requirements. Therefore, this paper begins with an experimental determination of the acoustic power in water contained in a glass tank using a set of optical devices. Because the light intensity of the diffraction image generated by acousto-optic interaction contains the required ultrasonic power information, specific software was written to extract the light intensity information from the image through a combination of filtering, binarization, contour extraction, and other image processing operations. The power value can then be obtained rapidly by processing the diffraction image using a computer. The results of this work show that the optical method offers advantages that include accuracy, speed, and a noncontact measurement method. Published by AIP Publishing.
引用
收藏
页数:8
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