Inductive Power Link With In-Band Virtual Serial Data Transfer
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Solution Overview
Problem
Current in-band wireless power transfer systems have limited data communication speeds, often requiring wired connections for faster data transmission, which limits the efficiency and flexibility of wireless power transfer systems.
Innovation Solution
Implementing a wireless power transfer system that utilizes buffered communications methods and virtual serial data transfer protocols, such as UART, to enable faster data transfer over inductive connections, simulating two-way communications without physical wires.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If in-band communications are used for wireless power transfer, then power transfer capability is achieved, but data communication speed is limited to 1-3 kilobytes per second
Solution Approach 1:
The patent combines wireless power transfer and high-speed data communication into a single inductive coupling system. By merging the power transfer magnetic field with data encoding capabilities, the system achieves both functions through one connection rather than requiring separate wired connections for high-speed data.
Solution Approach 2:
The inductive coupling interface is designed to serve multiple functions: it transfers wireless power and simultaneously enables high-speed two-way data communication. This multi-functional approach allows the same physical connection to handle both power delivery and data transfer tasks that previously required separate channels.
2Speed
If wired connections are used for faster data transmission, then data transfer speed is improved, but system complexity and lack of wireless flexibility increase
Solution Approach 1:
The patent extracts the data communication capability from the traditional wired connection requirement. By taking out the need for separate physical data cables and implementing data encoding within the wireless power transfer magnetic field, the system eliminates wired connections while maintaining high-speed communication capabilities.
Solution Approach 2:
The system replaces mechanical wired connections with an electromagnetic field-based communication method. Data is transmitted by encoding it into the magnetic field used for power transfer, substituting the mechanical cable connection with a field-based transmission medium that provides both power and data channels.
3Adaptability or versatility
If legacy communication protocols are maintained for compatibility, then interoperability is preserved, but communication speed and protocol suitability are limited
Solution Approach 1:
The patent changes the operational parameters of the communication protocol by encoding data into the magnetic field characteristics of the power transfer system. This parameter change enables the system to support higher data rates while maintaining protocol compatibility, allowing legacy devices to communicate through the wireless power interface at enhanced speeds.
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
Enables high-speed, wireless data transfer compatible with legacy systems, eliminating the need for wired connections and enhancing interoperability between devices.
Implementation Method 1
Wireless connection systems are used in a variety of applications for the wireless transfer of electrical energy, electrical power, electromagnetic energy, electrical data signals... Such systems often use inductive wireless power transfer, which occurs when magnetic fields created by a transmitting element induce an electric field, and hence, an electric current, in a receiving element.
Implementation Method 2
The receiver antenna is configured for inductive coupling with the transmitter antenna and receiving the transmission from the transmitter antenna... The power conditioning system is configured to receive the transmission from the at least one receiver antenna, convert the received transmission to a direct current (DC) power signal
Data Source
AI summary
A transmitter-side host device comprises a transmitter-side antenna and a transmitter-side control system. The transmitter-side control system is configured to: (i) output an unmodulated AC signal for driving the transmitter-side antenna to emit an unmodulated alternating electromagnetic field that delivers wireless power to a receiver-side host device that includes a load and (ii) modulate an in-band data signal onto the unmodulated AC signal and thereby outputting a modulated AC signal for driving the transmitter-side antenna to emit a modulated alternating electromagnetic field that delivers both wireless power and wireless data to the receiver-side host device. The in-band data signal is formatted in accordance with a wireless power and data transfer protocol and carries, as payload, embedded data originating from the transmitter-side host device that is formatted in accordance with a data communication protocol different from the wireless power and data transfer protocol.