title: Ultrasonic power measurement system based on acousto-optic interaction.
abstract: 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.
authors.affiliation: Institute of Microsystems, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China.
authors.forename: Liping
authors.initials: L
authors.lastname: He
authors.affiliation: Institute of Microsystems, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China.
authors.forename: Fulong
authors.initials: F
authors.lastname: Zhu
authors.affiliation: Hubei Institute of Measurement and Testing Technology, East Lake High-Tech Development Zone, Wuhan, Hubei 430223, People's Republic of China.
authors.forename: Yanming
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Institute of Microsystems, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China.
authors.forename: Ke
authors.initials: K
authors.lastname: Duan
authors.affiliation: Institute of Microsystems, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China.
authors.forename: Xinxin
authors.initials: X
authors.lastname: Lin
authors.affiliation: Institute of Microsystems, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China.
authors.forename: Yongjun
authors.initials: Y
authors.lastname: Pan
authors.affiliation: Institute of Microsystems, School of Mechanical Science and Engineering, Huazhong University of Science and Technology, 1037 Luoyu Road, Wuhan, Hubei 430074, People's Republic of China.
authors.forename: Jiaquan
authors.initials: J
authors.lastname: Tao
mesh_terms: D000162:Acoustics; D055620:Optical Phenomena; D000069453:Ultrasonic Waves