Seawater Battery-Based Wireless Marine Buoy System with Battery Degradation Prediction and Multiple Power Optimization Capabilities > Publication | UNIST YK RESEARCH

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Publication

Seawater Battery-Based Wireless Marine Buoy System with Battery Degradation Prediction and Multiple Power Optimization Capabilities
Author
Jeonghoon Cho. Myeongwoo Kim, Youngjin Kim, Jeong-Sun Park, Dohee Lee, Youngsik Kim, Jaejoon Kim
Journal
IEEE
Vol
9
Page
104104-104114
Year
2021
This paper presents a wireless marine buoy system based on the seawater battery (SWB), providing self-powered operation, power-efficient management, and degradation prediction and fault detection. Since conventional open circuit voltage (OCV) methods cannot be applied due to inherent cell characteristics of SWB, the coulomb counting (CC) method is adopted for the state of charge (SOC) monitoring. For the state of health (SOH), a variance-based detection scheme is proposed to provide degradation prediction and fault detection of the SWB. The self-powered operation is augmented by two proposed power optimization schemes such as multiple power management and three-step LED light control. A wireless buoy system prototype is manufactured, and its functional feasibility is experimentally verified, where its location and SOC are periodically monitored in a smartphone-based wireless platform.