期刊
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
卷 226, 期 C4, 页码 1107-1117出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954406211418158
关键词
structural monitoring; energy harvesting; piezoelectricity; rail; sensor network
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.
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