10 April 2018 Design and characterization of an ocean wave powered lifejacket using 2DOF floating boards
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Abstract
Lifejacket is an indispensable life-saving equipment for ships and airplanes. Traditional lifejacket is designed to prevent human from drowning. However, the water temperature is usually low, especially in winter, which significantly reduces the human body temperature and leads to death. Meanwhile, power is critical for drowning people to use emergency communication equipment. This paper proposed an ocean wave powered lifejacket using 2DOF floating boards to provide both buoyance and electricity for drowning people. Hence, they can use this continuous electric power to keep key body warm and send distress signal. This lifejacket is featured with two 2DOF floating boards and the mechanical motion rectifier (MMR) can convert the 2-DOF motions to the unidirectional rotation of generator. The design principle is illustrated and the dynamic modelling for the 2-DOF motions has been analyzed. Bench test and lake test have been conducted to validate the design concept.
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Jia Mi, Lin Xu, Yaling Yang, Lei Zuo, "Design and characterization of an ocean wave powered lifejacket using 2DOF floating boards", Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105951Z (10 April 2018); doi: 10.1117/12.2296524; https://doi.org/10.1117/12.2296524
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