DocumentCode :
616847
Title :
Multiple nonlinear oscillators for autonomous Wireless Sensor Nodes
Author :
Ando, B. ; Baglio, S. ; Maiorca, F. ; Trigona, C.
Author_Institution :
D.I.E.E.I., Dept. of Electr., Electron. & Informatic Eng., Univ. of Catania, Catania, Italy
fYear :
2013
fDate :
6-9 May 2013
Firstpage :
1311
Lastpage :
1314
Abstract :
In this paper, we present an array of coupled nonlinear oscillators suitable to be applied in Wireless Sensor Nodes and autonomous devices. The energy to be harvested comes from ambient vibrations as external energy sources. In particular, we consider two sources increasingly available in the ambient or in the human body and often both are mixed together: periodic induced waveforms and stochastic sources. The oscillator is composed of multiple magnetically-coupled bi-stable cantilevers with different natural frequencies inside each single well. The structure of the oscillator, modeling, simulations and measurement data will be here described. The principle has been validated and compared with other nonlinear techniques already proposed in literature. In particular the results show the possibility to efficiently recovery energy from mixed-sources having rich spectrum dictated by random vibrations and low frequency peaks consequence of periodic sources. The proposed device, based on piezoelectric output, is suitable to be used as converter in order to supply wireless sensor networks, autonomous nodes or it can be applied as power sustainer for communication of integrated devices and contactless measurement systems.
Keywords :
oscillators; stochastic processes; vibrations; waveform analysis; wireless sensor networks; ambient vibration; autonomous wireless sensor node; contactless measurement system; converter; energy harvesting; external energy source; human body; integrated device communication; mixed-source; multiple magnetically-coupled bistable cantilever; multiple nonlinear oscillators; nonlinear technique; periodic induced waveform; periodic sources; piezoelectric output; power sustainer; random vibration; stochastic sources; wireless sensor networks; Energy harvesting; Micromechanical devices; Oscillators; Resonant frequency; Vibrations; Wireless communication; Wireless sensor networks; Multiple nonlinear oscillators; coupled systems; energy harvesting for WSNs;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2013 IEEE International
Conference_Location :
Minneapolis, MN
ISSN :
1091-5281
Print_ISBN :
978-1-4673-4621-4
Type :
conf
DOI :
10.1109/I2MTC.2013.6555625
Filename :
6555625
Link To Document :
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