Modelling and Validation of a Mass Imbalance Oscillation Generator to Harvest Heart Motion Energy

Zurbuchen, Adrian; Pfenniger, Aloïs; Omari, Sammy; Vogel, Rolf (19 July 2013). Modelling and Validation of a Mass Imbalance Oscillation Generator to Harvest Heart Motion Energy. Proceeding (802) Modelling and Simulation / 804: Signal and Image Processing - 2013. ACTA Press 10.2316/P.2013.802-038

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An autonomous energy source within a human body is of key importance in the development of medical implants. This work deals with the modelling and the validation of an energy harvesting device which converts the myocardial contractions into electrical energy. The mechanism consists of a clockwork from a commercially available wrist watch. We developed a physical model which is able to predict the total amount of energy generated when applying an external excitation. For the validation of the model, a custom-made hexapod robot was used to accelerate the harvesting device along a given trajectory. We applied forward kinematics to determine the actual motion experienced by the harvesting device. The motion provides translational as well as rotational motion information for accurate simulations in three-dimensional space. The physical model could be successfully validated.

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