Wireless Power Receiver Timeout Selection for Foreign Object Detection

The patent applies preliminary action by conducting foreign object detection using Q-value measurement before the calibration process begins. By detecting foreign objects in advance and setting the reference value of power loss beforehand, the system avoids the need for multiple trials during the calibration phase, ensuring the process completes within the timeout period while maintaining detection accuracy

The patent segments the foreign object detection process into two distinct phases: (1) preliminary detection using Q-value measurement before calibration to set the reference value, and (2) detection during power transmission by comparing actual power loss against the pre-set reference value. This segmentation allows each phase to be optimized independently, preventing timeout issues while maintaining reliability

The patent performs the complex Q-value measurement and reference value calculation as a preliminary action before the main calibration process. This approach achieves high measurement precision for power loss calculation while avoiding the need for multiple trials during operation, thereby reducing the perceived complexity of the overall system

The patent introduces Q-value measurement as an intermediary method to determine the reference value of power loss. Instead of directly measuring power loss through multiple trials, the system uses Q-value (quality factor) measurement as an intermediate step that provides accurate reference data, simplifying the overall measurement process while maintaining precision