Design, analysis and testing of a piezoelectric flex transducer for harvesting bio-kinetic energy

A Daniels, M Zhu, A Tiwari
2013 Journal of Physics, Conference Series  
The increasing prevalence of low power consuming electronics brings greater potential to mobile energy harvesting devices as a possible power source. A new piezoelectric energy harvesting device, called the piezoelectric flex transducer (PFT), is presented and developed. A Finite Element Model (FEM) was developed to design and analyse the PFT. The PFT consists of a piezoelectric element sandwiched between substrate layers and metal endcaps that are able to amplify the axial force on the
more » ... orce on the piezoelectric element. Based on the concept of the Cymbal transducer, the PFT can withstand higher forces, was retrofitted into a shoe and used to power a wireless sensor module whilst the subject with a body weight of 760N was wearing the shoe and ran at 3.1mph (1.4HZ on shoe), the PFT produced an average maximum power of 2.5mW (over 2MΩ load).
doi:10.1088/1742-6596/476/1/012047 fatcat:muzzmpcstjgf7dnvjbarelsypu