Wireless Power Transmission Through Metal Walls
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Solution Overview
Problem
Existing wireless power transmission systems face inefficiencies and electromagnetic interference when attempting to transmit power and signals through thick metal walls, requiring perforations and resulting in low transmission efficiency below 10% at frequencies less than 100 Hz, especially in applications like vessels with multiple sections.
Innovation Solution
A wireless power and signal transmission system using a transmitter/receiver device with a structure comprising a thin conductive layer, a dielectric layer, and a ground layer adjacent to a thick metal wall, generating electromagnetic waves within a frequency range of 20 MHz to 150 MHz, which propagate through the metal wall via surface EM waves, allowing efficient transmission without physical perforation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electromagnetic waves are used to transmit power and signals through thick metal walls, then wireless transmission is achieved, but transmission efficiency drops below 10% and electromagnetic interference occurs
Solution Approach 1:
The patent introduces a specialized transmitter/receiver device as an intermediary between the power source and the target. This device includes a conductive layer, dielectric layer, and ground layer that work together to couple with surface electromagnetic waves on the metal wall, enabling efficient energy transfer without direct penetration through the metal barrier.
Solution Approach 2:
The patent operates in the frequency range of 20 MHz to 150 MHz, which is optimized for surface electromagnetic wave propagation on metal structures. By changing the operating frequency parameters to match the surface wave characteristics, the system achieves high transmission efficiency while maintaining wireless operation.
2Ease of operation
If holes are made in thick metal walls to transmit power or signals, then transmission capability is improved, but structural integrity and security are compromised
Solution Approach 1:
The transmitter/receiver device acts as an intermediary that enables transmission without physical penetration. The device couples with surface electromagnetic waves that naturally propagate along the metal wall surface, eliminating the need for holes or perforations while maintaining complete structural integrity of the metal barriers.
3Ease of operation
If electromagnetic waves are used for communication through metal partitions, then wireless communication is enabled, but electromagnetic interference occurs between adjacent sections
Solution Approach 1:
The transmitter/receiver device is designed with localized electromagnetic field confinement. The conductive layer, dielectric layer, and ground layer create a focused coupling mechanism that interacts primarily with surface waves on the adjacent metal wall, limiting electromagnetic energy propagation to the intended target section and preventing interference with other adjacent sections.
4Speed
If traditional wireless power transmission methods are used at frequencies less than 100 Hz, then low-frequency operation is achieved, but transmission efficiency remains below 10%
Solution Approach 1:
The patent fundamentally changes the operating frequency parameter from less than 100 Hz to the range of 20 MHz to 150 MHz. This frequency transformation enables resonance with surface electromagnetic waves on metal structures, dramatically improving transmission efficiency while maintaining the ability to transmit power and signals wirelessly through metal walls.
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
Enables high-efficiency communication and power transmission through metal partitions without perforating the walls, improving cost efficiency, durability, and convenience by maintaining high transmission efficiency even in environments where traditional methods fail.
Implementation Method 1
generating electromagnetic waves within a frequency range of 20 MHz to 150 MHz
Implementation Method 2
which propagate through the metal wall via surface EM waves
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
A signal transmitting/receiving device faces a conductor and communicates with another transmitting/receiving device. A signal transmitting/receiving device communicating with a counterpart device in an electromagnetic induction scheme via an adjacent conductive object, for example, comprises: a first layer which is formed of a conductive material, and comprises at least one opening facing the object; a second layer which is adjacent to the first layer on the side opposite the object, and is formed of a conductive material; and a third layer which is arranged between the first layer and the second layer, and exchanges an electromagnetic field comprising a signal with the object through the opening.