Wireless Charging Coil Alignment via Inverted Camera Display
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Solution Overview
Problem
Conventional parking assistance systems create a sense of disorientation for drivers as the stationary ground is displayed on a monitor while the moving vehicle aligns with target parking lines, making it difficult to intuitively align the power reception coil with the power transmission coil.
Innovation Solution
A parking assistance system that includes a power transmission device with a power transmission coil on the ground and a power receiving device with a power receiving coil on the vehicle, using imaging and display means to show the vehicle's alignment with the power transmission coil, allowing the driver to intuitively align the coils by displaying the camera's video and superimposing center and parking lines on the display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the conventional parking assistance display shows target parking lines moving on the monitor while the vehicle is stationary, then the vehicle alignment can be guided, but the driver experiences a sense of strangeness and disorientation
Solution Approach 1:
The patent inverts the conventional display approach by showing the stationary ground (power transmission coil) as the reference frame on the monitor while the vehicle image moves into position. This inversion creates a natural perspective where the ground appears fixed and the vehicle moves relative to it, eliminating driver disorientation while maintaining alignment guidance functionality
2Measurement precision
If the display shows the vehicle stationary and ground moving, then alignment guidance is provided, but the power reception coil alignment with power transmission coil becomes less intuitive
Solution Approach 1:
The patent uses a camera to capture the actual ground scene including the power transmission coil and creates a visual copy displayed on the monitor. This real-time visual copy allows the driver to see the actual stationary ground position and align the vehicle's power reception coil intuitively by matching it with the displayed power transmission coil location, maintaining both precision and intuitiveness
Data Source
AI summary
In a parking assistance system comprising: a power transmission device provided on a ground side and configured to transmit power; and a power receiving device provided in a vehicle and configured to receive the power transmitted by the power transmission device and supply the power to an electric load, the power transmission device includes: a power transmission coil configured to transmit the power; imaging means for imaging the power transmission coil; and sending means for sending the power receiving device an image captured by the imaging means, and the power receiving device includes: a power receiving coil configured to receive the power transmitted by the power transmission coil; receiving means for receiving the image; and display control means for displaying the image received by the receiving means on display means.