Wireless Power Transmitter Channel Selection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless charging technologies lack a standard for the operation of wireless power transmitters and receivers, including communication channel selection, which can lead to conflicts with other communication channels and inefficient power transmission.
Innovation Solution
A method and system for a wireless power transmitter that sets a search channel for communication with receivers, detects energy levels and Received Signal Strength Indication (RSSI) values, and determines whether to designate the search channel as a communication channel based on these detection results, minimizing conflicts with other channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a wireless power transmitter uses a fixed communication channel for power transmission, then the communication process is simple, but conflicts with other communication channels and interference occur
Solution Approach 1:
The wireless power transmitter performs channel detection and assessment before establishing communication, by detecting energy levels and RSSI values of candidate channels in advance to identify the most suitable channel for power transmission, thereby avoiding conflicts with other communications
Solution Approach 2:
The system uses feedback from channel detection results (energy level and RSSI measurements) to dynamically select the optimal communication channel, continuously monitoring and adjusting channel selection based on detected signal conditions
2Reliability
If the wireless power transmitter scans all available channels to find the best communication channel, then communication reliability is improved, but the time required for channel selection increases
Solution Approach 1:
Instead of exhaustively scanning all possible channels, the system performs partial channel detection on a selected subset of candidate channels, detecting energy levels and RSSI values only for channels that are most likely to be suitable, thereby reducing time while maintaining reliable channel selection
3Measurement precision
If the wireless power transmitter uses high power for channel detection, then detection accuracy is improved, but energy consumption increases
Solution Approach 1:
The wireless power transmitter utilizes its existing communication unit and signal processing capabilities to perform channel detection, making the communication system multi-functional by serving both communication and channel assessment purposes, thereby avoiding additional energy-consuming dedicated detection hardware
Data Source
AI summary
A method and a wireless power transmitter are provided for transmitting wireless power to at least one wireless power receiver. The method includes setting, by the wireless power transmitter, a search channel to be used for communication with the at least one wireless power receiver; detecting at least one of an energy level and a Received Signal Strength Indication (RSSI) value of a signal received on the search channel; and determining whether to designate the search channel as a communication channel based on the detection results.