Wireless Power Receiver Amplitude Modulation for Signal Distortion
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Solution Overview
Problem
In non-contact charging systems, as the strength of the wireless power signal transmitted from the wireless power transmitting apparatus increases, distortion occurs in the modulated signal, leading to communication errors between the wireless power transmitting apparatus and the wireless power receiving apparatus.
Innovation Solution
The wireless power receiving apparatus measures the strength of the wireless power signal and modulates its amplitude accordingly using a selection of modulators, including capacitors, resistors, and transistors, to prevent distortion and ensure smooth communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the strength of the wireless power signal is increased to improve charging speed, then power transmission efficiency is improved, but signal distortion occurs leading to communication errors
Solution Approach 1:
The patent implements dynamic adjustment of communication signal parameters based on the detected power signal strength. The communication signal frequency and/or amplitude are adaptively modified to match the current power transmission conditions, ensuring reliable communication across varying power levels without requiring system shutdown or reduction in charging speed
Solution Approach 2:
The patent changes communication signal parameters (frequency, amplitude) based on the power signal strength detection. By detecting the power signal characteristics and adjusting communication parameters accordingly, the system maintains reliable communication while operating at high power transmission levels, resolving the contradiction between charging speed and communication reliability
2Reliability
If the amplitude of communication signal is increased to improve signal strength, then communication reliability is improved, but signal distortion increases at high power levels
Solution Approach 1:
The patent dynamically adjusts communication signal parameters including frequency and amplitude based on the detected power signal strength. This adaptive parameter adjustment allows the system to maintain optimal signal characteristics for reliable communication while avoiding the harmful distortion effects that occur with fixed high-amplitude signals at high power levels
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 smooth communication between the wireless power receiving and transmitting apparatuses even when wireless power signals of varying strengths are transmitted, thereby preventing communication errors and ensuring reliable operation.
Implementation Method 1
a wireless power receiving apparatus receiving wireless power from a wireless power transmitting apparatus
Implementation Method 2
modulating the amplitude of the wireless power signal according to a strength of the measured wireless power signal
Data Source
AI summary
A wireless power reception device and a wireless communication method thereby are provided. The wireless communication method by the wireless power reception device may comprise the steps of: receiving a wireless power signal from a wireless power transmission device; measuring the strength of the wireless power signal; modulating the amplitude of the wireless power signal according to the measured strength of the wireless power signal; and performing communication with the wireless power transmission device by using the signal having the amplitude modulated.