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Open AccessArticle

Development of a Novel Piezoelectric Harvester Excited by Raindrops

Department of Industrial Engineering, University of Padova, 35131 Padova, Italy
Author to whom correspondence should be addressed.
Sensors 2019, 19(17), 3653;
Received: 19 July 2019 / Revised: 13 August 2019 / Accepted: 20 August 2019 / Published: 22 August 2019
(This article belongs to the Special Issue Energy Harvester Sensing)
The impact of raindrops on a dry surface leads to a splashing phenomenon that dissipates a lot of energy. To improve energy collection, a novel piezoelectric raindrop energy harvester equipped with a spoonful of water was developed. The advantages and the drawbacks of this solution were analyzed with the aid of numerical simulations. A series of experimental tests were carried out in a laboratory with simulated raindrops. Experimental results showed that the negative effect of the added water mass was exceeded by the positive effects related to the impact of the raindrop on a liquid surface. Tests carried out connecting the harvester to a resistive load showed that the prototype was able to collect more energy than a simple cantilever harvester. View Full-Text
Keywords: raindrop energy harvester; impulse vibrations; piezoelectric raindrop energy harvester; impulse vibrations; piezoelectric
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MDPI and ACS Style

Doria, A.; Fanti, G.; Filipi, G.; Moro, F. Development of a Novel Piezoelectric Harvester Excited by Raindrops. Sensors 2019, 19, 3653.

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