Wireless Power FSK Decoding Using Variable Cycle Timing
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Solution Overview
Problem
Existing wireless power transfer systems face challenges in efficiently decoding FSK signals, particularly during fast FSK operations, which can lead to unstable power signal generation and potential decoding failures.
Innovation Solution
The implementation of a method where the wireless power receiver generates a stable FSK signal by varying the number of cycles, allowing for efficient decoding without the need for expensive decoding ICs or complex algorithms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If FSK decoding is performed during fast FSK operations, then data transmission speed is improved, but signal stability deteriorates leading to decoding failures
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing optimal decoding parameters (such as integration time, threshold values, and frequency deviation compensation factors) before fast FSK operations begin. The receiver prepares lookup tables and decoding configurations in advance based on expected transmission conditions, enabling rapid and accurate decoding during high-speed operations without compromising signal stability
Solution Approach 2:
The patent implements dynamics by making the decoding parameters adaptive and variable rather than fixed. The system dynamically adjusts integration time, frequency thresholds, and synchronization windows based on real-time detection of FSK signal characteristics and transmission speed conditions. This dynamic adaptation allows the decoder to maintain stability across varying fast FSK speeds
2Measurement precision
If expensive decoding ICs or complex algorithms are used, then FSK decoding accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent employs cheap short-living objects by replacing expensive dedicated FSK decoding ICs with general-purpose microcontrollers or processors that can be programmed with simplified decoding algorithms. The system uses software-based decoding logic that leverages the microcontroller's existing computational resources, eliminating the need for specialized hardware while maintaining adequate decoding accuracy for wireless power transfer applications
Solution Approach 2:
The patent applies taking out by extracting the essential FSK decoding function from complex dedicated hardware and isolating it as a separate, simplified processing task. The system separates frequency detection, demodulation, and data extraction into distinct software modules that can be executed sequentially on low-cost processors, removing the need for integrated complex decoding circuits
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 enables reliable FSK decoding even during fast FSK operations, ensuring stable power signal transmission and reception, and simplifies the decoding process without requiring advanced hardware or software.
Implementation Method 1
The magnetic induction method corresponds to a method transmitting power by using electric currents that are induced to the coil of the receiver by a magnetic field, which is generated from a coil battery cell of the transmitter, in accordance with an electromagnetic coupling between a transmitting coil and a receiving coil
Implementation Method 2
The magnetic resonance method is similar to the magnetic induction method in that is uses a magnetic field. However, the magnetic resonance method is different from the magnetic induction method in that energy is transmitted due to a concentration of magnetic fields on both a transmitting end and a receiving end, which is caused by the generated resonance
Implementation Method 3
a method and apparatus where the wireless power receiver receives data information from the wireless power transmitter through FSK
Data Source
AI summary
The present disclosure provides a method for receiving wireless power by a wireless power receiver in a wireless power transmission system and a device using same, the method comprising: in a negotiation phase, transmitting request information to a wireless power transmitter and establishing a power transfer contract with the wireless power transmitter on the basis of the request information; and in a power transfer phase, receiving the wireless power from the wireless power transmitter on the basis of the power transfer contract, wherein the request information comprises information related to the number of cycles of FSK, the wireless power receiver receives data information from the wireless power transmitter through the FSK based on the information related to the number of cycles, and the wireless power receiver decodes the FSK in an interval changing according to the number of cycles.