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 Study on the Level Limit Switch for Measuring Near-distance Variation with 1-3 Type Ceramic/Polymer Composite Ultrasonic Transducer

1-3형 복합압전체 초음파 트랜스듀서를 사용한 근접거리변동 측정용 레벨 Limit스위치에 관한 연구

  • 김홍근 (동아대학교 전기공학과) ;
  • 박경일 (동아대학교 전기공학과) ;
  • 신광호 (경성대학교 멀티미디어공학과) ;
  • 사공건 (동아대학교 전기공학과)
  • Published : 2003.08.22
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Abstract

In this study, an ultrasonic transducer is fabricated with 1-3 type composite resonators. Pulse-echo responses of an ultrasonic transducer are investigated in underwater dependent on the variable designated water-level. LED Output signals of a level limit with changing a water level is obtained by the 1-3 type self-made composite transducer and electric measuring unit. LED is turned on at above the up-limit level with increasing a water level, and LED is turned on at less than the down-limit level with decreasing a water level. There was good agreement between the virtual water level and output LED signal by using the self-made water-detecting system.

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