System and method for coded communication signals regulating inductive power transmissions
AssigneePowermat Technologies Ltd.
InventorsYossi Azancot, Arik Rofe, Oola Greenwald, Amir Ben-Shalom, Moti Asheri, Alfred Leibovitz
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Abstract
An inductive power outlet for wirelessly powering a power receiver is presented that comprises a voltage peak detector that is configured to detect voltage changes that are indicative of increase in a system resonant frequency. The inductive power outlet is configured to respond to detected voltage changes by shutting down or issuing a warning, and the voltage peak detector is further used to detect communication signals initiated by the power receiver to the power outlet.
Claims8
An inductive power outlet, having a primary inductor, for wirelessly powering an inductive power receiver, having a secondary inductor, wherein the primary inductor and the secondary inductor form a resonant frequency, the inductive power outlet comprising:
- a driver generating an oscillating voltage to the primary coil at a frequency higher than the resonant frequency;
- and
- a signal detector comprising:
- a peak detector configured to detect voltage peaks across the primary inductor or current peaks of a current supplied to the primary inductor;
- and
- a processor configured to determine a frequency of either the voltage peaks or the current peaks.
Dependencies are inferred from the claim text.