Submarine LED: Wirelessly powered underwater display controlling its buoyancy

Abstract

This work proposes the wirelessly powered underwater display that can control its position by changing its own buoyancy. The proposed display is equipped with a motor-based actuator to control its effective volume for buoyancy control. The newly proposed underwater AC wireless power transfer (WPT) function drives the power-consuming OLED display and actuation motor. This work confirmed that the proposed WPT function could deliver mW-class power even to hundreds of mm3-class volume LEDs.