- Volume 46 Issue 2
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Design, fabrication and performance characteristics of a 50kHz tonpilz type transducer with a half-wavelength diameter
반파장 직경을 갖는 50kHz tonpilz형 음향 변환기의 설계, 제작 및 성능특성
- Lee, Dae-Jae (Division of Marine Production System Management, Pukyong National University) ;
- Lee, Won-Sub (Dept. of Harbor and Marine Products, Gangseo District Office, Busan Metropolitan)
- Received : 2010.03.08
- Accepted : 2010.04.08
- Published : 2010.05.31
In a split beam echo sounder, the transducer design needs to have minimal side lobes because the angular position and level of the side lobes establishes the usable signal level and phase angle limits for determining target strength. In order to suppress effectively the generation of unwanted side lobes in the directivity pattern of split beam transducer, the spacing and size of the transducer elements need to be controlled less than half of a wavelength. With this purpose, a 50 kHz tonpilz type transducer with a half-wavelength diameter in relation to the development of a split beam transducer was designed using the equivalent circuit model, and the underwater performance characteristics were measured and analyzed. From the in-air and in-water impedance responses, the measured value of the electro-acoustic conversion efficiency for the designed transducer was 51.6%. A maximum transmitting voltage response (TVR) value of 172.25dB re
Supported by : 한국연구재단
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