Self-powered autonomous wireless sensor node using vibration energy harvesting


Torah, Russel, Glynne-Jones, Peter, Tudor, John, O'Donnell, T., Roy, S. and Beeby, Steve (2008) Self-powered autonomous wireless sensor node using vibration energy harvesting. Measurement Science and Technology, 19, (12), 125202. (doi:10.1088/0957-0233/19/12/125202).

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Description/Abstract

This paper reports the development and implementation of an energy aware autonomous wireless condition monitoring sensor system (ACMS) powered by ambient vibrations. An electromagnetic (EM) generator has been designed to harvest sufficient energy to power a radio-frequency (RF) linked accelerometer-based sensor system. The ACMS is energy aware and will adjust the measurement/transmit duty cycle according to the available energy; this is typically every 3 s at 0.6 m s−2 rms acceleration and can be as low as 0.2 m s−2 rms with a duty cycle around 12 min. The EM generator has a volume of only 150 mm3 producing an average power of 58 μW at 0.6m s−2 rms acceleration at a frequency of 52 Hz. In addition, a voltage multiplier circuit is shown to increase the electrical damping compared to a purely resistive load; this allows for an average power of 120 μW to be generated at 1.7 m s−2 rms acceleration. The ACMS has been successfully demonstrated on an industrial air compressor and an office air conditioning unit, continuously monitoring vibration levels and thereby simulating a typical condition monitoring application

Item Type: Article
ISSNs: 1361-6501
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > EEE
ePrint ID: 266983
Date Deposited: 16 Dec 2008 13:14
Last Modified: 27 Mar 2014 20:12
Further Information:Google Scholar
ISI Citation Count:28
URI: http://eprints.soton.ac.uk/id/eprint/266983

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