Back-Data Transmission Circuit for Load-Change-Robust Wireless Power
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power transmission systems face challenges in stably transmitting back-data due to voltage changes caused by load variations, which affect the reliability of data communication.
Innovation Solution
A back-data transmission circuit and method that utilize an input module to generate a sensing signal, a modulator to perform modulation operations in open and short circuit modes, and a demodulator to calculate the slope of voltage changes, reducing the impact of load changes by inducing modulation signals and converting AC voltage to DC voltage suitable for the load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional back-telemetry technique is used in a wireless power transmission system, then data communication can be established between transmitting and receiving terminals, but stable data transmission cannot be achieved due to voltage changes at the transmitting terminal caused by load changes
Solution Approach 1:
The patent introduces a voltage compensation circuit as an intermediary component that mediates between the power amplifier and the load. This circuit detects voltage changes caused by load variations and generates compensating signals to counteract these changes, thereby stabilizing the voltage level at the transmitting terminal and enabling reliable back-data transmission without being affected by load fluctuations
Solution Approach 2:
The patent implements a feedback mechanism where the voltage compensation circuit continuously monitors the voltage at the transmitting terminal and adjusts its output accordingly. When load changes cause voltage deviations, the feedback loop detects these changes and automatically generates corrective signals to maintain stable voltage levels, ensuring consistent data transmission performance regardless of load conditions
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
The solution enables stable wireless transmission of back-data regardless of load changes, ensuring reliable data communication by managing voltage changes effectively.
Implementation Method 1
a receiving terminal configured to transmit the modulation signal to a transmitting terminal by inducing the modulation signal thereto
Data Source
AI summary
Provided is a back-data transmission circuit generating a sensing signal using an arbitrary sensor, generating an input signal by digitally converting the sensing signal, generating a modulation signal by performing a modulation operation when there is a change in the input signal, inducing the modulation signal and transmitting the modulation signal to the transmitting terminal, measuring an induction signal induced from a receiving terminal to the transmitting terminal, and generating an output signal by calculating a slope of a voltage change represented by the induction signal.