Wireless Power Receiver Authentication and State Control
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Solution Overview
Problem
Conventional wireless power transmission systems lack effective methods to authenticate receiving devices, leading to potential power transmission to counterfeit or unsafe devices, which can result in safety issues and inefficient energy use.
Innovation Solution
The system introduces a method where receiving devices emit beacons containing identification information, and the wireless power transmission system controls power delivery based on authentication status, allowing only authenticated devices to receive full power and reducing energy consumption by directing lower 'courtesy-level' power to unauthenticated devices during authentication periods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless power transmission is provided to all receiving devices without authentication, then power delivery speed is improved, but safety and energy efficiency deteriorate due to potential transmission to counterfeit or unsafe devices
Solution Approach 1:
The system performs authentication of receiving devices before initiating full power transmission. The transmitter sends authentication requests and verifies device identities in advance, ensuring only authorized devices receive power. This preliminary authentication step prevents power transmission to counterfeit or unsafe devices while maintaining efficient power delivery to legitimate devices.
2Reliability
If authentication procedures are implemented for all receiving devices, then safety is improved, but system complexity and authentication time increase
Solution Approach 1:
The system implements differentiated power transmission strategies based on authentication status. Authenticated devices receive full power transmission, while unauthenticated devices receive reduced or no power. This local quality approach applies different power levels to different device groups, maintaining safety through authentication while preserving full functionality for authorized devices and minimizing impact on system complexity.
3Productivity
If full power is transmitted to unauthenticated devices, then power delivery efficiency is improved, but energy waste increases due to potential transmission to counterfeit devices
Solution Approach 1:
The system implements continuous monitoring and feedback mechanisms to track authentication status of receiving devices. Based on authentication results, the transmitter dynamically adjusts power transmission levels - providing full power to authenticated devices and reducing or stopping power transmission to unauthenticated devices. This feedback-driven approach ensures energy is efficiently utilized only for legitimate devices, preventing waste on counterfeit devices while maintaining high power delivery efficiency for authorized devices.
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 safe and efficient power transmission by authenticating devices before full power delivery, reducing the risk of powering unsafe devices and conserving energy by managing power levels based on device authentication status.
Implementation Method 1
Wireless power transmission can cause a higher energy density in a region. A receiving device in that higher energy density region can generate power from the higher energy density, e.g., a phone can charge wirelessly when placed in a region of higher energy density caused by transmission of radio frequency (RF) energy to the region.
Data Source
AI summary
Modification of a state of a wireless power receiving device is disclosed. The modification of the state can be based on anticipated delay in a communication session. In an aspect, this can include a delay related to authenticating the wireless power receiving device to a wireless power transmission system or component thereof. In an aspect, this can provide for better control over which wireless power receiving devices have wireless power directed at them, which can be related to safety, reliability, subscription level, or other best practices. In some embodiments, wireless power receiving devices can receive a first level of wireless power in a current state, in a modified state, etc., while a second level of power can be directed to the wireless power receiving device upon a rule related to anticipated delay being satisfied, e.g., upon authentication, upon expiration of a sleep timer, determined subscription status, etc.