Wireless Receiver Positioning via Signal Strength Threshold
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Solution Overview
Problem
Wireless power charging efficiency is compromised and human safety is at risk when a person is between the charger and the equipment, leading to potential power absorption or collision with the body.
Innovation Solution
A system comprising a receiver with a wireless communication unit, display control unit, and contactless communication unit that adjusts the display of receiving strength and transmits power only when the strength exceeds a threshold, allowing the user to position the receiver optimally for efficient charging while minimizing human exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless power feeding is performed without position verification, then charging convenience is improved, but charging efficiency degrades and human safety is compromised
Solution Approach 1:
The system performs preliminary radio wave reception verification before initiating wireless power transfer. The receiver confirms it can adequately receive signals from the transmitter, ensuring proper positioning and alignment before power feeding begins, thus preventing inefficient charging and potential human exposure
Solution Approach 2:
The system implements bidirectional communication where the receiver sends verification signals back to the transmitter to confirm reception strength and positioning. This feedback mechanism ensures that power transfer only occurs when the receiver is properly positioned, maintaining both efficiency and safety
2Ease of operation
If wireless power feeding is performed without position verification, then charging convenience is improved, but human safety is compromised
Solution Approach 1:
The system performs preliminary radio wave reception verification before initiating wireless power transfer. By confirming that the receiver can adequately receive signals from the transmitter, the system ensures proper positioning and alignment, thereby preventing scenarios where power might inadvertently affect a human body standing between the devices
Solution Approach 2:
The system implements bidirectional communication where the receiver sends verification signals back to the transmitter. This feedback loop ensures that power transfer only occurs when the receiver is properly positioned and ready, adding a safety layer that prevents harmful power exposure to humans
3Adaptability or versatility
If receiving strength threshold is set low, then charging accessibility is improved, but power loss increases
Solution Approach 1:
The system dynamically adjusts the receiving strength threshold parameter based on communication quality and positioning conditions. By optimizing this threshold parameter, the system achieves a balance between accessibility (allowing charging in various positions) and energy efficiency (preventing power transfer when misalignment is significant)
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
Improves charging efficiency and reduces the risk of power affecting a human body by enabling optimal positioning of the receiver based on receiving strength feedback, ensuring safer and more effective wireless power transfer.
Implementation Method 1
a wireless communication unit configured to receive a radio wave transmitted from a transmitter
Implementation Method 2
a contactless communication unit configured to wirelessly transmit power to the receiver
Data Source
AI summary
It is desirable to provide a technology which is capable of improving charging efficiency and reducing a possibility that power may affect a human body upon wireless power feeding.There is provided a receiver including a wireless communication unit configured to receive a radio wave transmitted from a transmitter; a display control unit configured to control display of at least one of receiving strength of the radio wave transmitted from the transmitter, at the wireless communication unit or predetermined information in accordance with the receiving strength; and a contactless communication unit configured to receive power wirelessly transmitted from the transmitter in a case where the receiving strength exceeds a threshold.