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Open AccessArticle

Underwater Spiral Wave Sound Source Based on Phased Array with Three Transducers

by 1,2,3, 1,2,3,*, 1,2,3,*, 1,2,3, 1,2,3 and 1,2,3
1
Acoustic Science and Technology Laboratory, Harbin Engineering University, Harbin 150001, China
2
Key Laboratory of Marine Information Acquisition and Security (Harbin Engineering University), Ministry of Industry and Information Technology, Harbin 150001, China
3
College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China
*
Authors to whom correspondence should be addressed.
Sensors 2019, 19(14), 3192; https://doi.org/10.3390/s19143192
Received: 4 June 2019 / Revised: 8 July 2019 / Accepted: 17 July 2019 / Published: 19 July 2019
(This article belongs to the Special Issue Piezoelectric Transducers)
This paper realizes an underwater spiral wave sound source by using three omni-directional spherical transducers with three different phases. The pressure distribution of the sound field for a phased array is derived using the superposition theory of sound field. The generation of spiral wave field is presented, the relationship between the performance of phased array sound field and the array parameters is analyzed, and also verified by the finite element method (FEM). A spiral wave sound source with three spherical piezoelectric ceramic transducers is then designed and fabricated based on FEM simulation, and the performance of the sound source is analyzed. Measurements are made in a reverberation pool, and the result shows that the fabricated spiral wave sound source is capable of producing a spiral sound wave. Under a frequency of 3.5 kHz, the phase directivity has a fluctuation of ±21°, and the amplitude directivity range is 4.3 dB, which verifies the realization of the spiral wave sound source. View Full-Text
Keywords: spiral sound wave; phased array; phase directivity; finite element spiral sound wave; phased array; phase directivity; finite element
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MDPI and ACS Style

Lu, W.; Guo, R.; Lan, Y.; Sun, H.; Li, S.; Zhou, T. Underwater Spiral Wave Sound Source Based on Phased Array with Three Transducers. Sensors 2019, 19, 3192.

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