# 솔레노이드 장치를 이용한 양식용 부자 LED 전원공급 시스템 개발

• Received : 2016.02.05
• Accepted : 2016.02.24
• Published : 2016.02.28
• 31 8

#### Abstract

This study investigates the development of an automatic lightening buoy that can indicate an aquaculture cage at night or in rough weather. The energy for the light is generated by the linear motion of a magnet along with a coil inside the buoy as the waves cause the buoy to oscillate up and down. The principle of the magnet motion is different between the magnet and body of the buoy because the movement of the latter is dependent on the surface wave, while the former is affected by the damper. To obtain a quantitative performance of the buoy, the voltage as well as up and down motion produced by several waves were measured in the wave tank. A shorter wave period, i.e., faster motion, of the magnet produced a brighter light. It is expected that this study can aid in deciding the optimum design of a buoy capable of producing a bright light at any aquaculture site affected by sea or fresh water waves.

#### Keywords

Lightening buoy;Aquaculture;Surface mooring

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#### Acknowledgement

Grant : 선망어업 선진화를 위한 어구 개선연구

Supported by : 국립수산과학원