Wireless Power Receiver Security Mode for Theft Prevention
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Solution Overview
Problem
The challenge in wireless charging systems is securing the power receiver from unauthorized removal during public charging, as existing specifications do not reliably differentiate between authorized and unauthorized removals.
Innovation Solution
Implementing a security mode in the power receiver that detects interruptions without a received security code and activates a protection function, such as releasing a warning signal or sending a notification, to prevent unauthorized removals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If wireless charging is provided in public areas without security verification, then accessibility and convenience are improved, but the risk of unauthorized removal and theft increases
Solution Approach 1:
The system performs preliminary security verification by requiring authentication (such as fingerprint recognition or password input) before initiating wireless charging. This preliminary action ensures that only authorized users can start charging, preventing unauthorized removal while maintaining public accessibility for legitimate users.
Solution Approach 2:
The system continuously monitors charging status and communicates between the power transmitter and receiver. If the receiver is removed during charging, the system detects this through communication interruption or position changes and provides feedback by stopping power transmission or triggering security alerts, thus preventing theft while allowing convenient charging for authorized users.
2Reliability
If security verification is required for wireless charging, then protection from unauthorized removal is improved, but system complexity and user operation difficulty increase
Solution Approach 1:
The security verification process is designed to be self-service oriented, where the user's own biometric data (fingerprint, face recognition) or stored credentials are used for authentication. The system automatically verifies and authenticates without requiring manual security configuration, thus providing strong security while keeping the interface simple and easy to use.
Solution Approach 2:
The security system integrates multiple authentication methods (fingerprint, password, facial recognition) and can adapt to different user preferences and device types. This multi-functional approach provides robust security protection while maintaining ease of use, as users can choose their preferred authentication method and the system handles the complexity internally.
3Measurement precision
If the power transmitter continuously monitors communication to detect removal, then security detection capability is improved, but energy consumption and processing load increase
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic communication intervals between the power transmitter and receiver. The transmitter sends periodic verification signals and checks for responses at predetermined intervals. This periodic approach maintains adequate detection accuracy for security purposes while significantly reducing energy consumption and processing load compared to continuous monitoring.
Solution Approach 2:
The system uses rapid detection methods that quickly check for receiver presence through brief communication exchanges. When the receiver is removed, the system detects this through missed communication windows or position verification failures, allowing fast detection without prolonged monitoring. This rushing-through approach provides timely security detection while minimizing energy expenditure.
Data Source
AI summary
A method for a power receiver for protecting a power receiver from being taken without permission while charged wirelessly includes receiving wireless power from a power transmitter and performing wireless charging in a security mode by the power receiver; detecting whether the wireless charging is interrupted without receiving a security code for authorization; and starting a protection function if the power receiver detects that the wireless charging is interrupted without receiving the security code for authorization.