Authenticated Wireless Power Beamforming for Selective Charging
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Solution Overview
Problem
Existing wireless power transmission technologies, such as inductive charging, are limited to short distances and lack the ability to authenticate specific devices, making it impossible to selectively charge one device over another, like a toothbrush or smartphone, without charging others nearby.
Innovation Solution
The system employs a wireless power supply that uses the same frequencies as wireless communication antennas to transmit power only to authenticated devices, adjusting the signal spatially or temporally to ensure power delivery to the correct device, using beamforming and authentication protocols like Wi-Fi Protected Access (WPA) to control power distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If wireless power transmission is used to charge devices remotely, then power delivery distance is improved, but device authentication and selective charging become problematic
Solution Approach 1:
The system performs authentication of the target device before initiating power transmission. The access point authenticates the device using credentials stored in a database, ensuring that only authorized devices receive power. This preliminary authentication step resolves the contradiction by establishing reliability before extending power delivery distance.
Solution Approach 2:
The system uses beamforming technology to direct power transmission signals toward specific authenticated devices rather than broadcasting power omnidirectionally. This spatial targeting ensures that power is delivered selectively to the intended recipient, resolving the authentication issue while maintaining extended transmission distance capabilities.
2Adaptability or versatility
If power is transmitted to multiple devices simultaneously, then power delivery versatility is improved, but energy waste increases
Solution Approach 1:
The system transmits power signals directed at specific authenticated devices using beamforming, rather than broadcasting power in all directions. This spatial targeting ensures energy is concentrated on intended recipients, reducing energy waste while maintaining the ability to serve multiple different devices sequentially or simultaneously based on authentication.
Solution Approach 2:
The system dynamically adjusts power transmission based on real-time authentication status and device presence. The access point continuously monitors which devices are authenticated and active, adjusting beam directions and power levels accordingly. This dynamic adaptation allows versatile power delivery to multiple devices while minimizing energy waste by not transmitting to unauthenticated or absent devices.
3Ease of operation
If authentication protocols are implemented for wireless power delivery, then power distribution control is improved, but system complexity increases
Solution Approach 1:
The system uses an access point as an intermediary between power transmission and device authentication. The access point maintains a database of authenticated devices and their credentials, acting as a mediator that verifies device identity before allowing power transmission. This intermediary approach simplifies the overall system architecture by centralizing authentication logic rather than requiring complex peer-to-peer authentication between all components.
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 controlled and efficient wireless power delivery to specific IoT devices, ensuring that only authenticated devices receive power, while avoiding power transmission to unauthenticated ones, thereby optimizing battery life and reducing energy waste.
Implementation Method 1
a wireless power supply transmits a wireless power signal which may be, for example, a wireless signal, such as a Wi-Fi signal
Data Source
AI summary
A wireless signal may supply a wireless power signal to a device to power the device for an authentication. If the device is authenticated, the wireless signal may be adjusted to provide power to the device. If the device is not authenticated, the wireless signal may be adjusted to avoid providing power to the device.