Energy harvesting for active implants: powering a ruminal pH-monitoring system

Machts, René; Reuter, Thomas; Prokop, Petra V.; Schewtschenko, Olga; Stubenrauch, Mike; Schilling, Cornelius GND; Witte, Hartmut GND

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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Machts, René / Reuter, Thomas / Prokop, Petra V. / et al: Energy harvesting for active implants: powering a ruminal pH-monitoring system. 2015.

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