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Human Energy Harvesting based on Piezoelectric Transduction using MEMS Technology

Abstract

A MEMS based spiral shaped piezoelectric transducer has been designed for harvesting energy with human walking motion. The torque obtained by human walk has been subjected to the spiral shaped piezoelectric transducer in order to obtain maximum displacement. A bimorph spiral shaped piezoelectric transducer has been designed to reduce the brittleness of the structure. FEM simulations has been performed with different types of metals and varying dimensions. The bimorph spiral shaped piezoelectric transducer gives maximum displacement of 6.1858x 106 μm for 150 Nm torque with nickel as its shim layer and PZT-5H as its upper and bottom layer.

Queeni Sunder, Bakialakshmi

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