Development of a real-time depth monitoring system for small fishing gear using an acoustic telemetry technique
Development of a real-time depth monitoring system for small fishing gear using an acoustic telemetry technique
复制标题
利用声学遥测技术开发小型渔具实时深度监测系统
DOI：
10.1007/s12562-015-0963-7
复制
发表时间：
2016
影响因子：
1.9
通讯作者：
Keiichi Uchida
中科院分区：
文献类型：
--
作者：
Kohei Hasegawa;Yoshinori Miyamoto;Keiichi Uchida
为提高捕鱼作业效率，开发了一个利用声学遥测技术实时监测小型渔具深度的系统。该系统由一个声波发射器（pinger），一个全向水听器与抑制器，和一个接收器。使用配备深度传感器的声波发射器，渔民可以确认渔具是否处于预期深度。所研制的脉冲发生器的电池可以很容易地更换，以便重复使用。在田间试验中对系统的性能进行了评估。测量深度的精度为0.4米，即使声波发射器在移动，也是恒定的。在实验中，该系统可以成功地监测到每隔几秒钟的脉冲深度。该系统被实施在带鱼拖钓，以检查其有效性。实施实验揭示了该系统的一些问题，如信号反射的影响或水听器的安装方法。但是，该系统能够真实的实时地连续监测渔具的深度，并且在捕鱼作业期间成功地操作，没有任何问题。该系统的应用，可望帮助渔民在调整齿轮深度容易和准确。
A system for real-time monitoring the depth of small fishing gear was developed using acoustic telemetry to improve the efficiency of fishing operations. The system consisted of an acoustic transmitter (pinger), an omni-directional hydrophone with a depressor, and a receiver. Using a pinger equipped with a depth sensor, a fisherman can confirm whether the fishing gear is at the intended depth. The battery of the developed pinger can be replaced easily for repeated use. The performance of the system was evaluated in a field experiment. The accuracy of measured depth was 0.4 m and was constant even if the pinger was moving. In the experiment, the system could successfully monitor the pinger depth every several second. The system was implemented in hairtail trolling to examine its effectiveness. The implementation experiments revealed some issues with the system, such as the effect of signal reflections or the installation method of the hydrophone. However, the system could monitor the depth of the fishing gear continuously in real time and it operated successfully without any problem during the fishing operation. Application of the developed system is expected to aid fishermen in adjusting the gear depth easily and accurately.