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Determination of the optimal carrier frequency in harsh environments by parameter estimation

 
: Jacobi, Rebekka C.; Süss, Andreas; Bögel, Gerd vom; Kolossa, Dorothea

Informationstechnische Gesellschaft im VDE:
Smart SysTech 2015. European Conference on Smart Objects, Systems and Technologies. CD-ROM : June 16 - 17, 2015 in Aachen, Germany
Berlin: VDE-Verlag, 2015 (ITG-Fachbericht 259)
ISBN: 978-3-8007-3996-7
7 S.
European Conference on Smart Objects, Systems and Technologies (Smart SysTech) <2015, Aachen>
Englisch
Konferenzbeitrag
Fraunhofer IMS ()
RFID; sensors; inductive power transmission

Abstract
Transponders in harsh medical or industrial environments are often embedded in or covered by metal. Eddy currents in conductive materials affect significantly the transmission of energy to a RFID or sensor transponder. With the help of a parameter estimation the carrier frequency can be adapted to optimally supply the transponder with energy. This adaption leads, in cases where state-of-the-art systems do not find the optimum, to a significant improvement of the energy supply. Finally, efficient approaches are given to implement this technique in a real-time application for mobile readers.

: http://publica.fraunhofer.de/dokumente/N-349854.html