Magnetic Plate for Wireless Data Transmission Power Efficiency
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Solution Overview
Problem
In wireless data transmission, especially in mobile electronic apparatus environments, the power consumption increases with the amount of data transmitted, posing a significant challenge due to limited available power.
Innovation Solution
A device for transmitting data using a transmitting coil and a magnetic plate made of specific magnetic materials, such as Fe—Si—B-based amorphous metal or Fe—Ni-M-T-based permalloy metal, with a ratio of residual magnetic flux density to saturation magnetic flux density optimized in a particular direction, allowing for efficient magnetic field generation and reduced power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wireless data transmission is performed using conventional magnetic materials, then data can be transmitted wirelessly, but power consumption increases with the amount of data transmitted
Solution Approach 1:
The patent applies parameter changes by optimizing the magnetic properties of the magnetic plate, specifically controlling the ratio of residual magnetic flux density to saturation magnetic flux density (Br/Bsat) to be greater than 0.5. This parameter optimization allows the magnetic plate to maintain strong magnetic field characteristics while requiring less energy for data transmission, directly resolving the contradiction between transmission capability and power consumption
Solution Approach 2:
The patent employs composite material design by combining a coil with a specifically engineered magnetic plate made of soft magnetic material. This composite structure leverages the complementary properties of both components - the coil for generating magnetic fields and the magnetic plate for enhancing and sustaining the magnetic flux - achieving efficient data transmission with reduced power consumption
2Reliability
If the magnetic field strength is increased to improve transmission reliability, then data transmission reliability improves, but power consumption increases
Solution Approach 1:
The patent optimizes the magnetic field intensity parameter (Hc) to satisfy 1 A/m ≤ Hc ≤ 1×10^4 A/m, and controls the magnetic permeability to be in the range of 10 to 10^5 at 2 KHz. These parameter optimizations enable the system to achieve reliable data transmission with minimized power consumption by operating at the most efficient magnetic field strength levels
3Device complexity
If conventional magnetic materials are used, then the device structure is simple, but magnetic field generation efficiency is insufficient
Solution Approach 1:
The patent uses a composite structure of coil and magnetic plate made of soft magnetic material with optimized properties (Br/Bsat > 0.5). This composite design significantly enhances magnetic field generation efficiency compared to conventional materials, while maintaining relatively simple device structure by only adding the magnetic plate component
Solution Approach 2:
The patent applies local quality improvement by specifically enhancing the magnetic properties of the magnetic plate material with directional magnetization. This localized optimization of magnetic characteristics in the magnetic plate region significantly improves overall magnetic field generation efficiency without requiring complex modifications throughout the entire device structure
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
The solution enables wireless data transmission at low power levels while maintaining effective magnetic field strength, reducing power consumption and minimizing errors due to noise, thus addressing the power efficiency issue in mobile environments.
Implementation Method 1
a transmitting coil configured to receive and transmit a data signal and to generate a magnetic field from the data signal
Implementation Method 2
a ratio of a residual magnetic flux density to a saturation magnetic flux density of the magnetic plate in a first direction is greater than a ratio of a residual magnetic flux density to a saturation magnetic flux density of the magnetic plate in a second direction
Data Source
AI summary
A device for transmitting data includes a transmitting coil configured to receive and transmit the data signal and to generate a magnetic field, and a magnetic material provided on one surface of the transmitting coil. A ratio of a residual magnetic flux density and a saturation magnetic flux density of the magnetic material is greater in a direction that the material is magnetized than in a direction the material is not magnetized.