Piezoelectric energy harvesting for autonomous sensors network on safety-improved railway vehicles
- 14 September 2011
- journal article
- research article
- Published by SAGE Publications in Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science
- Vol. 226 (4), 1107-1117
- https://doi.org/10.1177/0954406211418158
Abstract
Mechanical vibrations of railway vehicles were converted to electric power by means of a piezoelectric energy harvester, a rectification circuit, and a storage battery. The power harvested is used to supply one node of a sensor network for the structural monitoring and safety improvement on railway vehicles. The dynamic dimensioning of the piezoelectric generator is presented, for the mechanical and electric viewpoints; the resonance tuning is described and the experimental validation of the performances of the node is provided. The tests were conducted on a scaled railway bogie, which is able to simulate the real working conditions of a train. The efficiency and the duty cycle of the autonomous sensing platform are measured.Keywords
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