Wireless Power Transfer Communication Timing to Suppress Receiver Interference
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Solution Overview
Problem
Interference of communication radio waves cannot be suppressed when communication is performed between a transmitter and a plurality of receivers.
Innovation Solution
A wireless power transfer system is configured to include a transmitter capable of wirelessly transferring power to multiple receivers, where the receivers perform wireless communication using varying radio wave intensities in a time sequence to suppress interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple receivers perform wireless communication simultaneously with the transmitter, then communication coverage and system functionality are improved, but radio wave interference increases
Solution Approach 1:
The patent implements periodic time-division multiplexing where receivers transmit communication signals in alternating time slots. First receivers transmit in odd time slots while second receivers remain silent, then second receivers transmit in even time slots while first receivers remain silent. This periodic alternation eliminates simultaneous transmissions and prevents radio wave interference while maintaining communication coverage for all receivers.
2Reliability
If receivers use constant radio wave intensity for communication, then communication stability is improved, but interference between multiple receivers cannot be suppressed
Solution Approach 1:
The patent applies dynamic radio wave intensity control where receivers adjust their transmission power based on their assigned time slot and receiver type. First receivers use a first radio wave intensity during their transmission slots, while second receivers use a second radio wave intensity during their slots. This dynamic adjustment ensures stable communication within each time slot while preventing interference between different receiver groups.
Data Source
AI summary
A wireless power transfer system includes at least one transmitter and a plurality of receivers, wherein the transmitter is capable of wirelessly transfer power to the plurality of receivers, and the plurality of receivers are capable of performing wireless communication with the transmitter by using radio wave intensities that vary in a time sequence so as to suppress interference among the respective receivers.