Wireless Charging Ping Control for Variable Receiver Height
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Solution Overview
Problem
Existing wireless power transmission systems lack effective methods for power control and efficient detection of power receivers regardless of their height, leading to suboptimal charging conditions.
Innovation Solution
A wireless power transmission system that maintains a ping value table mapping ping signal conditions to each height of a power receiver, detects the receiver by varying the ping signal based on recorded conditions, and controls the charge mode according to messages received from the power receiver, enabling efficient and optimized wireless power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If a fixed ping signal is used for detection, then the detection method is simple, but the detection success rate decreases when receiver height varies
Solution Approach 1:
The ping signal is made dynamic by varying its parameters (frequency, duty cycle, power) based on the detected height of the power receiver. The system adjusts the ping signal characteristics in real-time to match the receiver's position, ensuring optimal detection success rate across different heights while managing complexity through adaptive control.
Solution Approach 2:
The system changes multiple parameters of the ping signal including frequency, duty cycle, and power level according to the receiver height. By mapping height information to specific signal parameters, the system optimizes detection effectiveness for receivers at various positions without requiring a completely different detection approach.
2Productivity
If wireless power transmission is performed without height consideration, then the system is simple to operate, but power transmission efficiency decreases
Solution Approach 1:
The system automatically performs height detection and adjusts transmission parameters without requiring user intervention. The power receiver transmits its height information, and the power transmitter autonomously selects the appropriate transmission mode and parameters, maintaining operational simplicity while optimizing efficiency through self-adjustment.
Solution Approach 2:
The system uses feedback from the power receiver's height information to adjust transmission parameters. The receiver provides height data, and the transmitter uses this feedback to select optimal transmission modes (magnetic induction, magnetic resonance, or electromagnetic wave) and adjust power levels, ensuring efficient power transmission across different heights.
3Adaptability or versatility
If multiple transmission modes are supported, then adaptability to different heights is improved, but system complexity increases
Solution Approach 1:
The system dynamically selects among multiple transmission modes (magnetic induction, magnetic resonance, electromagnetic wave) based on the detected receiver height. Rather than maintaining all modes active simultaneously, the system activates only the appropriate mode for the current height condition, providing height adaptability while controlling complexity through conditional activation.
Solution Approach 2:
The system changes fundamental transmission parameters including the type of electromagnetic interaction (induction, resonance, or wave propagation) based on height. By mapping height ranges to specific transmission modes and adjusting associated parameters like frequency and power, the system achieves versatile height adaptation while managing complexity through parameter-based mode selection.
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 allows for efficient wireless power transmission and charging without height restrictions, optimizing charging conditions and improving detection success rates.
Implementation Method 1
The magnetic induction technique is a technique of transferring electrical energy utilizing the phenomenon that electricity is induced between a transmitter coil and a receiver coil
Implementation Method 2
The magnetic resonance technique is a technique of generating magnetic field that oscillates with a resonance frequency in a transmitter coil and transferring energy intensively to a receiver coil designed with the same resonance frequency
Implementation Method 3
The electromagnetic wave technique is a technique of receiving electromagnetic wave using several rectennas in a receiver and transforming it to electrical energy
Data Source
AI summary
A wireless power transmitting and charging system is disclosed. A method for operating a power transmitter of the wireless power transmitting and charging system comprises the steps of: maintaining a ping value table where ping signal conditions are mapped according to the height of a power receiver; recognizing the power receiver by varying a ping signal according to the ping signal conditions recorded in the ping value table; and controlling a charging mode according to a message received from the power receiver.