Energy harvesting from human motion

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Biomechanical energy harvesting from human motion presents a promising, clean alternative to electrical power supplied by batteries. This technology could provide electrical power for portable electronics and for computerized and motorized prosthetics. In this work we developed two energy harvesting devices one for the knee joint and the second for the ankle. The devices convert the breaking power in the joint (similar to breaking in hybrid cars) into electricity and recharge batteries. Currently our knee devics is capable of harvesting 1.5Watt during 5 Km/h walking of 80Kg person.