Wireless Power Transmitter Pairing for Interference Mitigation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless power transmission systems, interference due to radio wave reflection or diffraction can lead to insufficient power delivery to wireless power receiver apparatuses, limiting their operational capabilities, such as complex signal processing and communication, due to decreased available power.
Innovation Solution
A wireless power transmitter apparatus equipped with a power estimator, signal transmitting and receiving circuits, and a power transmitter control circuit determines optimal pairings of transmitter and receiver apparatuses based on estimated power values to ensure sufficient power delivery, using a test signal to calculate first and second estimated power values and adjusting antenna directivity to maximize total received power without increasing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless power transmitter apparatuses transmit power to multiple wireless power receiver apparatuses in various combinations, then power delivery capability is improved, but interference due to radio wave reflection or diffraction occurs causing power to decrease below operational threshold
Solution Approach 1:
The system performs preliminary pairing determination before actual power transmission. The power transmitter apparatus calculates estimated received power for multiple possible pairings in advance, selects the optimal pairing combination that ensures all receivers get sufficient power, and then executes power transmission according to this predetermined pairing. This preliminary planning prevents interference issues during actual transmission.
Solution Approach 2:
The system uses feedback from estimated received power calculations to adjust pairing decisions. Each power transmitter apparatus receives feedback information from other transmitters about their estimated power values, and uses this feedback to determine the final pairing that maximizes total received power while ensuring all receivers meet the threshold requirement.
2Adaptability or versatility
If complex signal processing and communication are performed by wireless power receiver apparatuses, then operational capability is improved, but power consumption increases reducing available power
Solution Approach 1:
The power transmitter apparatus performs preliminary calculations of estimated received power and determines optimal pairings before actual power transmission. This allows the receiver apparatus to operate with minimal processing during the actual power reception phase, as the pairing decisions have already been made in advance by the transmitter based on pre-calculated estimates.
Solution Approach 2:
The power transmitter apparatus independently determines the optimal pairing combinations using its own calculations and the feedback information from other transmitters. This self-service approach eliminates the need for complex communication and coordination protocols among multiple receiver apparatuses, thereby reducing their power consumption while still achieving optimal system performance.
Data Source
AI summary
A power estimator calculates first estimated power values based on levels of test signals received from power receiver apparatuses, each first estimated power value indicating estimated received power of a corresponding power receiver apparatus when a power transmitter apparatus transmits power to the power receiver apparatuses. A signal transmitting circuit transmits each first estimated power value to a corresponding power receiver apparatus. A signal receiving circuit receives second estimated power values from the power receiver apparatuses, each second estimated power value indicating estimated received power of a corresponding power receiver apparatus when other power transmitter apparatuses transmit power to the power receiver apparatuses. A power transmitter control circuit determines pairing of the power transmitter apparatuses and the power receiver apparatuses for power transmission, based on the first and second estimated power values, so that estimated received power of each power receiver apparatus is equal to or higher than a threshold.