Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 158, Issue 1, Pages 132-139Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.sna.2009.12.018
Keywords
Pyroelectric sensor; Energy harvesting; PZT; PVDF
Funding
- Spanish Ministry of Education and Science [TEC2004-05520, TEC2007-66331, HI03-48]
- European Regional Development Fund
- Italian MIUR [IT1832]
Ask authors/readers for more resources
Pyroelectric cells based on fabricated screen-printed PZT and commercial PVDF films are proposed as thermal energy harvesting sources in order to supply low-power autonomous sensors. The cells are electrically modelled as a current source in parallel with output impedance. Heating and cooling temperature fluctuations generated by air currents were applied to the pyroelectric converters. The generated currents and charges were respectively in the order of 10(-7) A and 10(-5) C for temperature fluctuations from 300 K to 360 K in a time period of the order of 100 s, which agrees with the theoretical model. Parallel association of cells increased the generated current. The dependence of the generated current on relevant technological parameters has been also characterized. Finally, current from cyclic temperature fluctuations was rectified and stored in a 1 mu F load capacitor. Energies up to 0.5 mJ have been achieved, enough to power typical autonomous sensor nodes during a measurement and transmission cycle. (C) 2009 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available