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- W2051218991 abstract "The purpose of the current study is to design and optimize a piezoelectric impact-based micro wind energy harvester (PIMWEH) as a power source for wireless sensor networks. First, using new PIMWEH design, numerical simulation, and experimental comparison analysis, we determined the most durable PIMWEH shape for application as a power source of WSNs. The experimental results show that the optimized PIMWEH generated 2.8 mW (RMS value) and did not crack within 40 h. Second, to supply power for sensor operation, we performed an experiment using a rectifying circuit, an AC–DC converter, and an electrical charger. The experimental results show a pure DC voltage signal of 3.3 V, and the output power was 1.0 mW (3.1 mW/cm3). A charging energy of 0.845 J was obtained in 24 min. Third, we calculated the efficiency of the PIMWEH to evaluate its performance. Using a three-step energy conversion process (using wind turbine, PZT, and LTC3588-1), an overall PIMWEH power conversion efficiency of 3.2% was obtained. For one day, the PIMWEH could supply power that is 6263–25055 times the power requirement of a commercialized ZigBee transmission. In addition, transmitting signals at intervals from 3.4 to 13 s was made possible." @default.
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- W2051218991 date "2015-02-01" @default.
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- W2051218991 title "Design and optimization of piezoelectric impact-based micro wind energy harvester for wireless sensor network" @default.
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- W2051218991 doi "https://doi.org/10.1016/j.sna.2014.12.010" @default.
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