The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 23, 2022
Filed:
May. 02, 2017
Koninklijke Philips N.v., Eindhoven, NL;
Andries Van Wageningen, Wijlre, NL;
Antonius Adriaan Maria Staring, Eindhoven, NL;
Wilhelmus Gerardus Maria Ettes, Leeuwarden, NL;
Petrus Carolus Maria Frissen, Beek, NL;
Aditya Mehendale, Geldrop, NL;
Willem Potze, Geldrop, NL;
Koninklijke Philips N.V., Eindhoven, NL;
Abstract
A wireless power transfer system includes a power receiver () receiving a power transfer from a power transmitter () via a wireless inductive power transfer signal. The power transmitter () comprises a transmit power coil () generating the power transfer signal. A test signal coil () coupled to a test signal generator () generates a magnetic test signal. A plurality of spatially distributed detection coils () is coupled to measurement unit () generating a set of measurement values reflecting signals induced in the detection coils () by the magnetic test signal. A processor () determines a measurement spatial distribution of the measurement value where the spatial distribution reflects positions of the detection coils (). A foreign object detector () detects a presence of a foreign object in response to a comparison of the measurement spatial distribution to a reference spatial distribution. The foreign object detector () is arranged to determine the reference spatial distribution in response to data received from the power receiving device ().