Wireless Charging Orientation Detection Using Sensor Feedback
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Solution Overview
Problem
Existing wireless charging systems lack effective methods to determine if a mobile device is properly oriented and positioned on a charging surface, leading to inefficient charging processes and potential battery damage due to improper alignment.
Innovation Solution
A method using sensors, such as accelerometers and magnetometers, to monitor the device's orientation relative to the charging surface, providing feedback through audible or visual alerts if the device is not correctly positioned, and adjusting its state to conserve power when the battery is full or not moved.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging is provided without orientation detection, then charging convenience is improved, but charging reliability deteriorates due to improper alignment
Solution Approach 1:
The system continuously monitors orientation sensors (accelerometer, gyroscope, magnetometer) to detect device orientation and position on the charging surface. When misalignment is detected, the system provides feedback through visual or audible alerts to guide the user to correct the device placement, ensuring reliable charging while maintaining ease of operation.
2Measurement precision
If continuous orientation monitoring is performed, then charging alignment accuracy is improved, but power consumption increases
Solution Approach 1:
Instead of continuous monitoring, the system performs orientation detection periodically or at key moments such as when the device is first placed on the charging surface or when charging status changes. This periodic approach maintains adequate alignment accuracy while significantly reducing power consumption compared to continuous monitoring.
3Loss of information
If feedback alerts are provided for every charging event, then user awareness of proper positioning is improved, but user experience deteriorates due to excessive notifications
Solution Approach 1:
The system provides feedback alerts selectively rather than for every charging event. Alerts are triggered only when misalignment is detected that would prevent proper charging, or when specific conditions are met (e.g., first placement attempt). This partial action approach maintains user awareness of proper positioning while avoiding excessive notifications that would degrade user experience.
Data Source
AI summary
Methods and systems for implementing wireless charging identification using a sensor are described. A device platform operating a device, such as a mobile electronic device, may be configured to determine that the device is in wireless communication with a charging surface by receiving and analyzing information from sensors. A battery or another entity associated with the device may receive a charge wirelessly from the charging surface through induction or another means. The device platform may determine if an orientation of the device relative to the charging surface has changed depending on the state of the charging process. In some examples, the device platform may use information from an accelerometer, gyroscope, or magnetometer to determine whether the device has moved. Based on whether the orientation of the device has changed relative to the charging surface, the device platform may be configured to provide feedback through one or more systems, such as audible notifications.