Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A PVDF Acoustic Sensor for Identifying Sound Source Frequencies

음원주파수 판별을 위한 PVDF 음향센서

  • 이용국 (건국대학교 공과대학 전기공학과) ;
  • 최용일 (건국대학교 공과대학 전기공학과) ;
  • 송유리 (건국대학교 공과대학 전기공학과) ;
  • 안형근 (건국대학교 공과대학 전기공학과) ;
  • 한득영 (건국대학교 공과대학 전기공학과)
  • Published : 1995.11.01
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Abstract

An acoustic sensor using PVDF film is proposed in this paper. And its properties, such as sensitivity level, identification of sound source frequencies. and directivity, were experimented. Sensitivity level measured at the distance of 1[m] was limited in the range of ${\pm}$10dB. Adjacent three frequencies were also tested to identify the frequency of sound sources. In the range of audible frequencies, it could distinguish the frequencies of a complex sound. In addition, it was found that the sensor outputs were maximum in the coincided direction with a source, when directivity was experimented with three sound sources and FFT. The proposed PVDF film sensor has good characteristics of directivity and identifying ability as an acoustic sensor.

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