Wireless Charger Presence Detection for Secure Power State Switching
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Solution Overview
Problem
Existing electronic devices lack efficient methods to dynamically manage power states and operating modes based on the presence or absence of remote devices during wireless charging, leading to suboptimal power usage and security protocols.
Innovation Solution
An electronic device system that utilizes a wireless charger to detect the presence or absence of a remote device, sending signals to the controller to switch between awake and sleep states, and manage access modes, incorporating authentication protocols via inductive coupling and radio communication to ensure secure access.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electronic device remains in awake state continuously, then security access is maintained, but power consumption increases
Solution Approach 1:
The system dynamically transitions between awake and sleep states based on the presence of remote devices. When remote devices are detected via wireless charging coupling, the electronic device transitions to awake state for secure access. When no remote devices are present, it transitions to sleep state to conserve power, creating a dynamic adaptation to operational conditions.
Solution Approach 2:
The wireless charging system provides feedback about the presence or absence of remote devices through detection of coupling status. This feedback mechanism enables the electronic device to automatically adjust its power state without user intervention, switching between awake and sleep modes based on real-time detection of remote device presence.
2Use of energy by moving object
If the electronic device transitions to sleep state, then power consumption is reduced, but security access is compromised
Solution Approach 1:
The system performs preliminary detection of remote devices through wireless charging coupling before transitioning to sleep state. By detecting the presence of authenticated remote devices in advance, the system ensures that security access requirements are met before entering low-power mode, preventing security compromises when transitioning to sleep state.
3Reliability
If authentication protocols are implemented, then security is enhanced, but device complexity increases
Solution Approach 1:
The wireless charging system serves as an intermediary mechanism for authentication. Instead of implementing complex dedicated authentication hardware, the system uses the existing wireless charging coupling detection and communication protocols to verify remote device presence and authenticity, simplifying the overall authentication architecture while maintaining security.
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 solution enables dynamic power management and secure access control by effectively transitioning between power states and access modes based on the presence of remote devices, optimizing power usage and enhancing security through seamless authentication processes.
Implementation Method 1
The wireless charger may use electromagnetic induction to transfer electricity to the remote device
Implementation Method 2
Electricity may be transferred from the wireless charger to the remote device through inductive coupling
Data Source
AI summary
Examples of electronic devices are described herein. In some examples, an electronic device includes a wireless charger. In some examples, the electronic device includes a controller to cause the electronic device to enter a first power state in response to determining that a remote device is placed on the wireless charger. In some examples, the controller is to cause the electronic device to enter a second power state in response to determining that the remote device is removed from the wireless charger.