Abstract
• Integration of frequency up conversion and multi-frequency concepts in design of an energy harvester to increase power density and broaden bandwidth. • Energy harvesting from animal movement for powering portable precision farming technologies. • Using energy harvesting to address drawbacks of battery technology. • Enhancing sustainability of self-powered systems with vibration-based energy harvesting. This paper presents the development of a multi-cantilever beam piezoelectric based frequency up conversion energy harvester for powering portable livestock farming technologies. The design consists of the driving and generating beams. The driving beams absorbs the low frequency ranging from 5.56-8 Hz based on cattle movement vibrations and upconverts it to higher frequencies (47.2 -76.05) that match the resonant frequencies of the generating beams. The generating beams vibrating at amplified frequencies generates output power of 3.84 mW and realizes a power density of 4740 µ W/ cm 3 . Such results demonstrate the potential of using energy harvesting to address the drawbacks of battery power in portable devices used in precision livestock farming technology.
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