王润田 1, 陈晶晶 1,龚剑彬 2
(1中国科学院声学研究所东海研究站,上海 200032;2舟山海洋科技有限公司,浙江316000)
摘要:针对深水网箱养殖过程出现的一些诸如网衣安全、鱼类逃逸等问题,介绍了几种类型的监测技术应用:(1)声学警戒带方式构成的被动式网衣安全监测技术,监视声纳可以是单波束,也可以是机械扫描的多波束或电子扫描的多波束,同时采用水下机器人进行巡视;(2)基于网箱中鱼的目标强度,实现对网箱中养殖品种大小、数量的统计监测,鱼的目标强度主要取决于鱼的体态特征,同时也与发射声波的波长有关;(3)数量识别技术以及饵料投饲过程中的声学监测技术,通过将声纳输出信号反馈到投饵机,实现饵料投放自动化。
关键词:深水网箱;声学监测;目标强度
Acoustic monitoring for ocean aquaculture in sea cage
WANG Run-tian 1, CHEN Jing-jing 1, GONG Jian-bing 2
( 1 Shanghai Acoustics Laboratory, Institute of Acoustics, Chinese Academy of Sciences, Shanghai 200032, China; 2 Zhoushan Ocean Technical Limited Corporation, Zhejiang Zhoushan 316000, China )
Abstract: Cage aquaculture technology in deep sea has been developing rapidly, which is enriching our table. But there are some questions. For example: if a sea cage is broken, the fish in the sea cage may escape from the cage. Some effective methods should be provided to ensure the safe operation of cages. Sound is a very good tool to do it in ocean. Several kinds of acoustic methods that can be introduced in this paper: (1) the cage monitor technique using the acoustic alert method; (2) the fish size based on the fish’s target strength (TS); (3) the acoustic monitor technology on the quantity recognition technology and the feeding process.
Key words: sea cage; acoustic monitoring; target strength
基金项目:2002年度浙江省重大科技攻关项目(021103552);2010浙江(舟山)—中国科学院海洋科技成果对接活动签约项目
作者简介:王润田(1958—),男,研究员,主要从事非线性声学、超声检测技术研究。E-mail: wangrunt@126.com
(来源:《渔业现代化》2012,39(3):19-22)