Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Development and Evaluation of Real-time Acoustic Detection System of Harmful Red-tide Using Ultrasonic Sound

초음파를 이용한 유해적조의 실시간 음향탐지 시스템 개발 및 평가

  • Kang, Donhyug (Maritime Security Research Center, KIOST) ;
  • Lim, Seonho (Maritime R&D Center, LIGNex1 Co. Ltd.) ;
  • Lee, Hyungbeen (Maritime Security Research Center, KIOST) ;
  • Doh, Jaewon (Maritime R&D Center, LIGNex1 Co. Ltd.) ;
  • Lee, Youn-Ho (Marine Ecosystem Research Division, KIOST) ;
  • Choi, Jee Woong (Department of Marine Science and Convergence Technology, College of Science and Technology, Hanyang University)
  • 강돈혁 (한국해양과학기술원 해양방위센터) ;
  • 임선호 (LIGNex1 Maritime 연구소) ;
  • 이형빈 (한국해양과학기술원 해양방위센터) ;
  • 도재원 (LIGNex1 Maritime 연구소) ;
  • 이윤호 (한국해양과학기술원 해양생태계연구부) ;
  • 최지웅 (한양대학교 과학기술대학 해양융합과학과)
  • Received : 2012.10.21
  • Accepted : 2013.02.04
  • Published : 2013.03.30
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Abstract

The toxic, Harmful Algal Blooms (HABs) caused by the Cochlodinium polykrikoides have a serious impact on the coastal waters of Korea. In this study, the acoustic detection system was developed for rapid HABs detection, based on the acoustic backscattering properties of the C. polykrikoides. The developed system was mainly composed of a pulser-receiver board, a signal processor board, a control board, a network board, a power board, ultrasonic sensors (3.5 and 5.0 MHz), an environmental sensor, GPS, and a land-based control unit. To evaluate the performance of the system, a trail was done at a laboratory, and two in situ trials were conducted: (1) when there was no red tide, and (2) when there was red tide. In the laboratory evaluation, the system performed well in accordance with the number of C. polykrikoides in the received level. Second, under the condition when there was no red tide in the field, there was a good correlation between the acoustic data and sampling data. Finally, under the condition when there was red tide in the field, the system successfully worked at various densities in accordance with the number of C. polykrikoides, and the results corresponded with the sampling data and monitoring result of NFRDI (National Fisheries Research & Development Institute). From the laboratory and field evaluations, the developed acoustic detection system for early detecting HABs has demonstrated that it could be a significant system to monitor the occurrence of HABs in coastal regions.

Keywords

References

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  1. Development and application of an acoustic system for harmful algal blooms (HABs, red tide) detection using an ultrasonic digital sensor pp.2005-7172, 2017, https://doi.org/10.1007/s12601-017-0061-0