Wireless Power Supply Coordination for Interference-Aware Transmission
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Solution Overview
Problem
Wireless power supply apparatuses can interfere with other wireless systems due to high transmission power and unintentional signal synthesis, causing interference with electromagnetic waves of nearby devices.
Innovation Solution
The wireless power supply apparatuses exchange power supply information to control the transmission time, direction, and power level of their power transmission signals, adjusting these parameters to minimize interference with other wireless systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If wireless power supply apparatuses transmit power using electromagnetic waves with high transmission power or high EIRP, then power transmission efficiency is improved, but interference with electromagnetic waves of other wireless systems increases
Solution Approach 1:
The power supply apparatus performs preliminary actions by transmitting power supply information (transmission time, direction, power level) before actual power transmission and receiving information from other apparatuses. This allows the apparatus to pre-determine its transmission parameters to avoid interference, resolving the contradiction between maintaining high power transmission and preventing interference with other wireless systems.
Solution Approach 2:
The apparatus dynamically adjusts its transmission parameters (time, direction, power level) based on received power supply information from other apparatuses. This dynamic adaptation allows the system to maintain high transmission power when safe while reducing or redirecting power when interference risk is detected, thus resolving the contradiction between power transmission efficiency and interference prevention.
2Area of stationary object
If multiple wireless power supply apparatuses are installed close to one another, then service coverage is improved, but unintentional signal synthesis occurs causing interference with other wireless systems
Solution Approach 1:
The apparatus merges information from multiple sources by receiving power supply information from other nearby power supply apparatuses and combining it with its own transmission parameters. This coordinated approach allows multiple apparatuses to operate closely together without causing unintentional signal synthesis interference, while still providing extended service coverage.
Solution Approach 2:
The system implements feedback mechanisms where each apparatus receives information about other apparatuses' transmission parameters and uses this feedback to adjust its own transmission. This feedback loop prevents unintentional signal synthesis by ensuring coordinated operation of multiple closely-installed apparatuses, resolving the contradiction between expanded coverage and interference prevention.
3Productivity
If power transmission signals are transmitted simultaneously by multiple power supply apparatuses, then power supply efficiency is improved, but interference with other wireless systems increases due to signal synthesis
Solution Approach 1:
The apparatus implements periodic action by determining specific transmission time slots for power transmission based on received power supply information. This allows multiple apparatuses to supply power efficiently through coordinated periodic transmissions rather than continuous simultaneous transmission, maintaining productivity while preventing harmful signal synthesis interference with other wireless systems.
Data Source
AI summary
A power supply system includes a first power supply apparatus and a second power supply apparatus. The second power supply apparatus includes a power transmission controller and a receiver. The power transmission controller transmits a power transmission signal for power supply. The receiver receives information on a wireless system to which neither the first power supply apparatus nor the second power supply apparatus belongs from the first power supply apparatus. The power transmission controller determines at least one of a transmission time at which the power transmission signal is transmitted, a transmission direction in which the power transmission signal is transmitted, a power level of the power transmission signal, or a frequency of the power transmission signal, using the information on the wireless system, and transmits the power transmission signal based on this determination.