Wireless Power Transmitter Pulse Control for Communication Stability
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Solution Overview
Problem
Wireless power transmission systems face instability when the power transmitter and receiver communicate, leading to decreased power transmission efficiency and fluctuations in audio signal volume due to power consumption by the communication section.
Innovation Solution
A power transmitter with a control section that adjusts the pulse width or amplitude of the pulse train during communication to maintain higher power transmission, ensuring stable power delivery even while communicating, by converting power into a pulse train and modifying its characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the power transmitter and receiver communicate wirelessly during power transmission, then information exchange for controlling power transmission is enabled, but power transmission efficiency decreases and audio signal volume fluctuates due to power consumption by the communication section
Solution Approach 1:
The system applies preliminary anti-action by having the power transmitter preemptively increase the power of the pulse train signal before communication occurs. The control section detects when communication is needed and adjusts the pulse train power in advance to compensate for the upcoming power consumption by the communication section, thereby preventing the deterioration of power transmission efficiency and audio signal volume during communication.
2Reliability
If the power of the transmitted signal is increased to maintain audio signal volume during communication, then consistent audio output is achieved, but power consumption increases
Solution Approach 1:
The system applies dynamics by making the power of the pulse train signal adjustable and time-variable. The control section dynamically changes the power level of the transmitted pulse train based on the communication state - increasing power during communication periods and maintaining normal power during non-communication periods. This dynamic adjustment ensures reliable audio signal delivery during communication while minimizing unnecessary power consumption during normal operation.
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 maintains stable wireless power transmission and consistent audio signal volume by compensating for power consumption during communication, ensuring reliable operation of wireless devices.
Implementation Method 1
a wireless power transmission system using electromagnetic induction
Implementation Method 2
a resonant circuit having a resonant frequency
Data Source
AI summary
A power transmitter 50 is usable in a wireless power transmission system for transmitting power wirelessly. The power transmitter 50 includes a power transmitting section 51 for transmitting power; a communication section 52 for communicating information, for controlling the transmission of the power, with the power receiver 60; and a control section 53 for controlling the power transmitting section 51 such that the power to be sent out by the power transmitting section 51 is higher while the communication section 52 is performing the communication.