彭阳明，许肖梅，张小康
（厦门大学海洋与环境学院，厦门 361005）

摘要：针对离岸深水网箱养殖的鱼群安全问题，采用水声多波束技术监测鱼群状态的方法。结合信号处理技术、通用分组无线业务（GPRS）无线传输技术及串口通信技术，开发了一套多波束鱼群状态监测仪。监测仪完成1次网箱扫描只需5 s；实现了监测数据的即采即发功能，提高了系统的实时性；改进了电路结构，降低了系统复杂度，减小了系统体积，降低了成本。试验表明，监测仪操作简便，性能稳定，能有效完成深水网箱的实时监测任务。
关键词：深水网箱；水声多波束；鱼量估计；远程监测

Improved design of multi-beam underwater acoustic monitoring system for fish in offshore fish cage

PENG Yang-ming, XU Xiao-mei, ZHANG Xiao-kang
( College of Oceanography and Environmental Science, Xiamen University, Xiamen 361005, China )

Abstract: To the security issue of fish shoal in offshore fish cage, a monitor method based on multi-beam underwater acoustic technique is employed. Integrating with the techniques of signal processing, GPRS wireless data communication and serial interface communication, a multi-beam underwater acoustic monitoring system for bred fish in offshore fish cage is designed. It takes only 5 second to accomplish an entire cage scanning. Detecting data are delivered to the user monitoring system immediately upon acquisition, which improves the real-time property of the system. As its circuit improved, system structure simplified, both the volume and the cost of the monitor reduce. Tests show that the monitoring system is simplified, easy placement and robust under different environmental conditions. It is well performed in real-time monitoring fish in offshore fish cage.
Key words: offshore fish cage; multi-beam underwater acoustic; remote monitoring; fish amount estimation

基金项目：福建省科技重点项目（2009N0050）
作者简介：彭阳明（1987—），男，硕士研究生，研究方向：水声遥测遥控。E-mail: pymplm2006@126.com
通讯作者：许肖梅（1960—），女，教授，博士生导师，研究方向：水声通信、水声遥测遥控、水声信号处理等。E-mail: xmxu@xmu.edu.cn
 

（《渔业现代化》2011.38（5）：17-21）