Design of a Multimode Type Ring Vector Sensor

Youngsub Lim; Cheeyoung* Joh; Heeseon* Seo; Yongrae**† Roh

doi:10.7776/ASK.2013.32.6.484

All Issue

2013 Vol.32, Issue 6 Preview Page Next Page

Design of a Multimode Type Ring Vector Sensor 다중 모드형 링 벡터 센서의 설계

30 November 2013. pp. 484-493

PDF XML

Abstract

Typical underwater acoustic sensors can measure the scalar quantity of sound-pressure-magnitude with the limitation of being unable to identify the direction of an incoming wave. This paper proposes a method to detect the direction of the sound wave with a ring sensor. The sensor of the proposed structure has a piezoceramic ring divided into eight elements, and distinguishes the direction of the sound wave by properly combining the output voltages of the piezoceramic elements. Further, through the analysis of the effects of the structural parameters like the ring radius and length, and piezoceramic thickness, we have suggested the way to improve the sensitivity of the vector sensor.

Keywords

Ring Sensor

Vector sensor

Cardioid

Underwater acoustic sensor

통상의 수중 음향 센서는 단일 센서로는 음압의 크기만 측정할 뿐 외부 음원의 방향은 측정 할 수 없는 한계가 있다. 이에 본 논문에서는 링 센서를 사용하여 음원의 방향을 찾을 수 있는 구조를 제안하였다. 제안된 구조의 링 센서는 내부 압전 세라믹이 8등분되어 배열되어 있으며, 외부 음압에 대한 각 압전 세라믹 조각의 출력 전압을 적절히 조합하여 외부 음원의 방향을 파악할 수 있는 특성을 가진다. 나아가 링 센서의 반경, 압전 세라믹의 두께, 길이와 같은 구조 변수들의 영향을 분석하여, 벡터 센서의 감도를 향상 시킬 수 있는 방안을 제시하였다.

키워드

링 센서

벡터 센서

심장형

수중 음향 센서

References

1.C. H. Sherman and J. L. Butler, Transducers and Arrays for Underwater Sound (Springer, New York, 2007), pp. 81-88.

2.J. O. Kim, K. K. Hwang, and H. G. Jeong, “Radial vibration characteristics of piezoelectric cylindrical transducers,” J. Sound Vib. 276, 1135-1144 (2004).

3.H. C. Schau and A. Z. Robinson, “Passive source localization employing intersecting spherical surfaces from time-of-arrival differences,” IEEE Trans. Acoust. Speech Sig. Process. 35, 1223-1225 (1987).

4.M. Rendas and J. Moura, “Cramer-rao bound for location system in multipath environments,” IEEE Trans. Sig. Process. 39, 2593-2610 (1991).

5.A. B. Baggeroer, W. A. Kuperman, and H. Schmidt, “Matched field processing: source localization in correlated noise as an optimum parameter estimation problem,” J. Acoust. Soc. Am. 83, 571-587 (1988).

6.J. C. Shipps and K. Deng, “A miniature vector sensor for line array applications,” in Proc. IEEE OCEANS 2003, 5, 2367-2370 (2003).

7.R. S. Gordon, L. Parad, and J. L. Butler, “Equivalent circuit of a ceramic ring transducer operated in the dipole mode,” J. Acoust. Soc. Am. 58, 1311-1314 (1975).

8.S. M. Cohick and J. L. Butler, “Rare-earth iron “square ring” dipole transducer,” J. Acoust. Soc. Am. 72, 313-315 (1982).

9.A. L. Butler and J. L. Butler, “Multimode directional telesonar Transducer,” in Proc. IEEE OCEANS 2000 MTS Conf. and Exhi., 2, 1289-1292 (2000).

10.A. L. Butler, J. L. Butler, J. A. Rice, W. Dalton, J. Baker, and P. Pietryka, “A tri-modal directional modem transducer,” in Proc. IEEE OCEANS 2003, 3, 1554-1560 (2003).

11.A. L. Butler, J. L. Butler, and J. A. Rice, “A tri-modal directional transducer,” J. Acoust. Soc. Am. 115, 658-665 (2004).

12.J. L. Butler and A. L. Butler, “The modal projector,” J. Acoust. Soc. Am. 129, 1881-1889 (2011).

13.L. E. Kinsler, A. R. Frey, A. B. Coppens, and J. V. Sanders, Fundamentals of Acoustics (John wiley & Sons, INC., New York, 2000), pp. 195-197.

Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 32
No :6
Pages :484-493
Received Date : 2013-05-13
Revised Date : 2013-08-05
Accepted Date : 2013-09-17
DOI :https://doi.org/10.7776/ASK.2013.32.6.484

The Journal of the Acoustical Society of KoreaISSN:1225-4428(Print) 2287-3775(Online)한국음향학회

All Issue