Testing an improved cymbal hydrophone

Sheng Chen; Guan-cheng Lin

doi:10.1007/s11804-009-8080-6

Journal of Marine Science and Application ›› 2009, Vol. 8 ›› Issue (4) : 328 -332. DOI: 10.1007/s11804-009-8080-6

Article

Testing an improved cymbal hydrophone

Sheng Chen ¹^,^a
, Guan-cheng Lin ¹

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Abstract

Cymbal hydrophones have small volume and high sensitivity, but their reception is not stable enough, and their reception is in too narrow a frequency band. In order to overcome these inadequacies, the structure of the cymbal hydrophone was improved. The single ceramic piezoelectric element was replaced with a double one, the radius of the ceramic piezoelectric element was reduced, and a parallel circuit was added. A static analysis of this new structure was developed, and then simulations were made of both the traditional and new hydrophone structure using finite element software. Tests were then conducted in a tank. The results showed that the improved hydrophone has reception in a wider frequency band, reception performance is stable within this frequency band, and sensitivity is still high.

Keywords

cymbal hydrophone / sensitivity / resonance frequency / parallel connection / frequency band

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Sheng Chen, Guan-cheng Lin. Testing an improved cymbal hydrophone. Journal of Marine Science and Application, 2009, 8(4): 328-332 DOI:10.1007/s11804-009-8080-6

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