Systems And Methods For Foreign Object Detection In Wireless Power Transfer

A method of foreign object detection (FOD) in a wireless power transfer (WPT) system, the method comprising:

• detecting, using control circuitry, that a foreign object is within a proximity of a WPT surface of a WPT system;
• accessing, using control circuitry, a first dataset of FOD sensitivity values of the WPT system, the first dataset representing a foreign object detection threshold of a WPT system;
• and a second dataset of foreign object detection values for an object obtained by the WPT system;
• generating, using control circuitry, a first probability distribution function (PDF) from the first dataset;
• generating, using control circuitry, a second PDF from the second dataset;
• determining, using control circuitry, based on the first PDF and the second PDF, a third PDF representing a probability of a missed detection of the object;
• modifying, using control circuitry, based on the third PDF, the foreign object detection threshold for detecting the object by the WPT system;
• and
• outputting, using control circuitry, a warning of a foreign object detection event based on the modified foreign object detection threshold.