Wireless Power Receiver Rectenna Tilt Control for Path Traversal
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Solution Overview
Problem
Existing wireless power transmission systems fail to effectively control the amount of power received by a moving wireless power receiver as it traverses a prescribed path, due to variations in posture and position relative to the transmitter.
Innovation Solution
The system identifies a prescribed path for the wireless power receiver and controls at least one element, such as rectenna elements, to adjust the power reception based on the path and position, using static design parameters and mechanisms like tilt control and phase adjustment to maintain optimal power reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the wireless power receiver moves along a prescribed path, then the receiver can be positioned at different locations to access power, but the amount of power received varies due to changes in posture and position relative to the transmitter
Solution Approach 1:
The patent applies dynamics by making the rectenna elements adjustable and reconfigurable based on the receiver's position and posture. The system dynamically modifies the geometry and orientation of rectenna elements to optimize power reception at different locations along the prescribed path, resolving the contradiction between mobility and power reception consistency.
Solution Approach 2:
The system changes physical parameters of the rectenna elements (such as orientation angles, spacing, and configuration) based on the receiver's position and posture. By adjusting these parameters in response to positional changes, the system maintains reliable power reception despite the receiver's movement along the path.
2Loss of energy
If the geometry of rectenna elements is modified to optimize power reception, then power efficiency improves, but the device complexity increases
Solution Approach 1:
The system performs preliminary action by pre-planning the modification of rectenna element geometry based on the known prescribed path and anticipated positions. This allows the system to optimize power reception efficiency without requiring complex real-time adjustments, as the control strategy is determined in advance.
Solution Approach 2:
The system uses feedback from the receiver's position and posture measurements to adjust the rectenna element configuration. This feedback mechanism enables the system to maintain optimal power reception efficiency while using relatively simple control logic based on measured positional parameters.
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
This approach ensures consistent and efficient power delivery to the wireless power receiver as it moves along a predefined path, maintaining power above a specific threshold or within a desired range by dynamically adjusting to changes in posture and position.
Implementation Method 1
a wireless power receiver for movement along a prescribed path comprises at least one rectenna element that converts incident power to received power
Data Source
AI summary
According to various embodiments, a moving wireless power receiver is configured to receive power wirelessly based on a prescribed path of the wireless power receiver. A prescribed path that a moving wireless power receiver traverses is identified. Further, at least one element of the wireless power receiver is controlled based on the prescribed path to change an amount of power received at the wireless power receiver from incident power transmitted by one or more wireless power transmitters. Specifically, the at least one element can be controlled to change the amount of power received at the wireless power receiver as either or both a posture and a position of the wireless power receiver change with respect to the one or more wireless power transmitters as the wireless power receiver traverses the prescribed path.