Wireless Power Transmission Pulse Control for Stable Data Modulation
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Solution Overview
Problem
Existing wireless power and data transmission systems face instability and noise issues when modulating a magnetic carrier wave with data, leading to power transfer destabilization and distortion in audio signals or other data transmission.
Innovation Solution
A power transmitting apparatus that adjusts the amplitude and pulse width of a pulse train in synchronization with data changes, using pulse width and amplitude modulators to maintain a constant pulse area and stabilize power transfer, while also employing resonators and amplifiers to optimize power and data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If data is modulated onto the magnetic carrier wave for wireless power and data transmission, then data communication capability is improved, but power transfer stability deteriorates due to amplitude changes causing distortion and noise
Solution Approach 1:
The patent introduces a magnetic carrier wave as an intermediary that separates power transmission and data communication functions. The carrier wave carries both power and modulated data through magnetic resonance coupling, allowing data to be transmitted without directly affecting the power transfer stability. The modulation is performed on the carrier wave properties rather than on the power signal itself.
Solution Approach 2:
The system employs periodic magnetic carrier wave oscillations at resonant frequency to transmit both power and data. The periodic nature of the carrier wave allows for stable resonance-based power transfer while enabling data encoding through periodic modulation techniques such as amplitude or frequency modulation of the carrier wave.
2Productivity
If the amplitude of the magnetic carrier wave is varied to encode data, then data transmission rate is improved, but signal distortion increases leading to noise in received signals
Solution Approach 1:
The system utilizes magnetic resonance vibration at a specific resonant frequency to transmit the carrier wave. By operating at resonance, the system achieves efficient energy transfer while maintaining stable oscillations. Data is encoded through controlled variations in the magnetic field oscillations without significantly deviating from the resonant frequency, thus minimizing distortion.
Solution Approach 2:
The patent employs parameter modulation of the magnetic carrier wave to encode data. Instead of large amplitude variations that cause distortion, the system uses subtle changes in parameters such as frequency, phase, or small amplitude modulations that can be detected without significantly affecting the overall power transfer or causing signal distortion.
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 reduces distortion and noise in signal reception, ensuring stable power transfer and clear data communication, including audio signals, by controlling the amplitude and pulse width of the pulse train in accordance with data values.
Implementation Method 1
a wireless power transmission method using the resonance phenomenon in an electromagnetic field are known
Implementation Method 2
a wireless power transfer method using the principle of electromagnetic induction
Data Source
AI summary
A power transmitting apparatus is usable for wireless power and data transmission. The power transmitting apparatus includes a power transmitting section configured to transmit power and data to be transmitted as being converted into a pulse train; and a control section configured to control the power transmitting section such that a change of the power caused by superimposition of the data is decreased.