Wireless Power Supply Foreign Object Detection Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power supply systems lack efficient mechanisms for detecting foreign objects and controlling power supply based on updated information from electronic devices, leading to potential interference and incorrect power management.
Innovation Solution
A power supply apparatus equipped with a communication unit to receive information from electronic devices and a control unit to manage power supply and foreign object detection processes, ensuring appropriate power distribution and detection based on updated status information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If foreign object detection process is continuously performed, then safety is improved, but power consumption and processing time increase
Solution Approach 1:
The system performs foreign object detection before initiating the power supply process. The control unit determines whether to perform power supply based on the detection result, avoiding unnecessary continuous detection during normal operation. This preliminary action ensures safety while minimizing time loss by only detecting when necessary.
Solution Approach 2:
The foreign object detection is performed periodically at specific stages (before power supply and during information update cycles) rather than continuously. The control unit checks for foreign objects at these periodic intervals, balancing detection accuracy with time efficiency by not requiring constant monitoring.
2Measurement precision
If information is continuously updated from electronic devices, then power management accuracy is improved, but communication overhead and processing complexity increase
Solution Approach 1:
The system obtains device status information (such as battery level, device type, and power requirements) before initiating power supply. This preliminary information gathering allows the control unit to pre-determine appropriate power supply parameters and detection requirements, reducing the need for continuous complex communication and processing during operation.
Solution Approach 2:
The control unit uses the obtained device information to feedback-adjust the power supply process and detection frequency. When device information is available and updated, the system adjusts its operation accordingly; when information is not updated, it maintains previous settings, thereby simplifying processing while maintaining accuracy.
3Productivity
If foreign object detection is performed without updated device information, then power supply speed is improved, but detection accuracy and safety decrease
Solution Approach 1:
The system performs foreign object detection as a preliminary step before power supply initiation. By completing detection first and then proceeding with power supply based on the detection result, the system ensures detection reliability is not compromised while maintaining efficient power supply speed once the decision is made.
Solution Approach 2:
The control unit autonomously determines whether to perform foreign object detection based on whether device information has been updated. When information is available, it performs detection; when not, it proceeds with power supply using previous detection results. This self-service logic maintains reliability without requiring external intervention or continuous complex processing.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables accurate foreign object detection and controlled power supply to electronic devices, preventing interference and ensuring reliable operation by using updated information from the devices.
Implementation Method 1
a power supply apparatus provided with a primary coil for wirelessly outputting power without being connected via a connector, and an electronic apparatus provided with a secondary coil for wirelessly receiving the power supplied from the power supply apparatus
Data Source
AI summary
A power supply apparatus includes a power supply unit configured to wirelessly supply power to an electronic apparatus, a communication unit configured to receive information regarding the electronic apparatus from the electronic apparatus, and a control unit configured to control whether to perform a process for detecting a foreign object according to whether the information is updated by the electronic apparatus.