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2012 Vol.31, Issue 8 Preview Page
Incidence Angle Estimation by the Tonpilz Type Underwater Acoustic Vector Sensor with a Quadrupole Structure

Quadrupole 구조를 가진 Tonpilz형 수중 음향 벡터 센서를 이용한 입사각 추정

Youngsub Lim1
,
Yongrae Roh2*
임 영섭1
,
노 용래2*
1경북대학교 센서 및 디스플레이공학과
2경북대학교 기계공학과
*Corresponding Author
30 November 2012. pp. 569-579
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Abstract

Typical Tonpilz type underwater acoustic transducers making use of piezoelectric ceramics detect the magnitude of an acoustic pressure, a scalar quantity, and convert this pressure into a proportional output voltage. The scalar sensor has no directional sensitivity. In this paper, we have proposed a new vector sensor based on the Tonpilz transducer structure, which is sensitive to both the magnitude and the azimuthal direction of an acoustic wave. Validity of this new design has been confirmed with analytic equations and finite element analyses.

Keywords
Tonpilz
Vector sensor
Underwater acoustics
Transducer

압전 세라믹을 이용한 전형적인 Tonpilz형 수중 음향센서는 외부에서 들어오는 음향 신호를 이에 상응하는 전압으로 변환해 스칼라 양인 음압의 크기만 측정할 뿐 외부에서 들어오는 신호의 방향은 파악할 수 없는 한계가 있다. 이와 같은 문제점을 해결하고자 본 논문에서는 Tonpilz형 트랜스듀서를 이용해 단일 센서만으로도 음압의 크기와 방위각 방향을 동시에 분석해 낼 수 있는 새로운 벡터 센서 구조를 제안하고, 제안된 구조의 타당성을 수식 및 유한요소 해석을 통해 검증하였다.

키워드
Tonpilz
벡터 센서
수중음향
트랜스듀서
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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 : 31
  • No :8
  • Pages :569-579
  • Received Date : 2012-08-06
  • Revised Date : 2012-09-20
  • Accepted Date : 2012-10-16
  • DOI :https://doi.org/10.7776/ASK.2012.31.8.569
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