Wireless Power Transmitter Adaptive FSK Speed Control
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Solution Overview
Problem
Current wireless power transmission systems face limitations in communication speed, particularly with methods like ASK and FSK, which are not suitable for middle power class transmissions or large data transmissions due to low transmission speeds and vulnerability to electrical/magnetic disturbances.
Innovation Solution
The implementation of a method that allows for adaptive adjustment of Frequency Shift Keying (FSK) communication speed by changing the number of cycles per bit and operating frequency, enabling negotiation and renegotiation phases to optimize data transmission based on channel quality and power class.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ASK or FSK communication methods are used in wireless power transmission systems, then power transmission can be achieved, but communication speed is limited to several kHz and the system is vulnerable to electrical/magnetic disturbance
Solution Approach 1:
The patent implements dynamic communication speed adjustment by allowing the receiver to send request packets (speed increase or speed decrease requests) during negotiation and power transfer phases. The transmitter responds by changing the communication speed based on these requests, enabling adaptive optimization of communication performance according to channel conditions and power class requirements
Solution Approach 2:
The patent changes the communication parameter (speed) dynamically during operation. By modifying the communication speed parameter based on receiver requests and channel quality, the system transitions from fixed-speed ASK/FSK communication to variable-speed communication, resolving the contradiction between reliability and speed
2Adaptability or versatility
If fixed communication speed is used in wireless power transmission, then system complexity is reduced, but the system cannot adapt to different power classes or channel conditions
Solution Approach 1:
The patent implements feedback mechanisms where the receiver evaluates communication quality and sends request packets (speed increase or speed decrease requests) to the transmitter. The transmitter receives these feedback signals and adjusts communication speed accordingly, enabling adaptive optimization without requiring complex pre-configured tables or external control systems
Solution Approach 2:
The system performs self-optimization through autonomous negotiation between transmitter and receiver. The receiver independently evaluates channel conditions and power class requirements, then requests appropriate speed adjustments. The transmitter autonomously processes these requests and implements speed changes, eliminating the need for external control or complex manual configuration
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 enhances communication speed in wireless power transmission systems, supporting various applications by dynamically adjusting FSK data transmission speed according to the communication channel quality and power class, thereby improving reliability and efficiency.
Implementation Method 1
The magnetic induction method transmits energy by using currents induced in a receiver-side coil due to the magnetic field generated at a transmitter-side coil battery cell according to electromagnetic coupling between the transmitter-side coil and the receiver-side coil
Implementation Method 2
the magnetic resonance method is different from the magnetic induction method in that resonance is generated when a specific resonant frequency is applied to the transmitter-side and receiver-side coils; and energy is transferred as a magnetic field is concentrated due to the generated resonance at both ends of the transmitter and receiver-sides
Implementation Method 3
frequency shift keying (FSK) using a frequency change is used for communication between a wireless power transmission apparatus and a wireless power reception apparatus
Data Source
AI summary
The present disclosure relates to an apparatus and a method for supporting an improved communication speed in a wireless power transmission system. In such present specification, provided is the method comprising the steps of: transmitting at least one data packet to a wireless power reception apparatus; receiving, from the wireless power reception apparatus, a first request packet requesting a change in a communication speed of the wireless power transmission apparatus; and changing the communication speed of the wireless power transmission apparatus on the basis of the first request packet, and transmitting, at the changed communication speed, a first response packet in response to the first request packet to the wireless power reception apparatus.