Energy Harvesting with Vibrating Shoe-Mounted Piezoelectric Cantilevers



This chapter presents a study on energy harvesting from human walking via piezoelectric vibrating bimorphs. Heel accelerations are measured and compared with data from literature. All relevant features are summarized in a typical (standard) acceleration signal, used as a reference input in numerical simulations. The transient electromechanical response (beam deflection, output voltage, and average output power) of a shoe-mounted rectangular scavenger excited by the standard acceleration is calculated by numerical simulations. Step-by-step numerical integration is used, as the input is a non-sinusoidal signal and explicit analytical solution is not available. Results from simulations are also validated with measurements on a real shoe-mounted device. A sensitivity analysis is finally performed to find alternative scavenger configurations that could provide increased power levels. Acceptability criteria based on imposed geometrical constraints and material strength limits are also checked. This analysis allows a rapid screening of harvesting performance among a wide set of different scavenger configurations, which allows finding the one providing the largest output power.


Piezoelectric Material Resistive Load Gait Cycle Acceleration Signal Swing Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work is a part of “Tech-Up” project for the development of ubiquitous and pervasive technologies, which is financially supported by the Friuli-Venezia Giulia Region, Italy. The authors wish also to acknowledge Mr. Elvio Castellarin for precious help in experimental measurements.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.DIEGM, Dipartimento di Ingegneria Elettrica Gestionale MeccanicaUniversità di UdineUdineItaly

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