Wireless charging transmitter with foreign object and living object detection systems
AssigneeWiTricity Corporation
InventorsBernward Dimke, Milenko Stamenic
Life of this patent
Estimating the term…
Abstract
Techniques for detecting foreign objects in a charging path of a wireless power transfer system are disclosed. An example apparatus for detecting a presence of a foreign object includes a foreign object detection (FOD) system, a living object protection (LOP) system, a control circuit operably coupled to the FOD system and the LOP system and configured to detect a change in one or more power transfer parameters, perform a calibration procedure on the FOD system based on the change in the one or more power transfer parameters, operate the LOP system in a high sensitivity mode concurrently with the calibration procedure, and operate the LOP system in a standard detection mode upon completing the calibration procedure.
Claims20
An apparatus for halting a wireless charging operation, the apparatus comprising:
- a foreign object detection (FOD) system;
- a living object protection (LOP) system;
- a control circuit operably coupled to the FOD system and the LOP system, and configured to:
- operate the FOD system and the LOP system standard detection modes;
- operate the LOP system in a high sensitivity mode;
- execute a sensitivity calibration of the FOD system;
- and
- halt the wireless charging operation upon a detection of an object with the LOP system.
A method for halting a wireless charging operation, comprising:
- operating a foreign object detection (FOD) system and a living object protection (LOP) system in respective standard detection modes;
- operating the LOP system in a high sensitivity mode;
- executing a sensitivity calibration of the FOD system;
- and
- halting the wireless charging operation upon a detection of an object with the LOP system.
An apparatus for halting a wireless charging operation, comprising:
- means for operating a foreign object detection (FOD) system and a living object protection (LOP) system in respective standard detection modes;
- means for operating the LOP system in a high sensitivity mode;
- means for executing a sensitivity calibration of the FOD system;
- and
- means for halting the wireless charging operation upon a detection of an object with the LOP system.
Dependencies are inferred from the claim text.