Current Directions in Biomedical Engineering (Sep 2015)
Energy harvesting for active implants: powering a ruminal pH-monitoring system
Abstract
Energy harvesting is a feasible method to prolong service life of implanted devices. We present a thermal energy harvesting approach for a ruminal pH-monitoring probe in cattle. Thermoelectric generators utilize the temperature gradient between the probe and the ruminal fluid during water intake. The in vivo experiment yielded a maximum electric power of 32 μW.
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