Magnetic Coupling Device with Orthogonal Field Zones
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Solution Overview
Problem
Existing magnetic coupling communication devices require multiple modules and switches to enable communication in both parallel and perpendicular orientations, leading to increased size, cost, and reduced magnetic field range, limiting their functionality.
Innovation Solution
A single communication module with a planar coil that generates an orthogonal magnetic field in one zone and reorients it for perpendicular communication in another zone using varying coil gaps and configurations, eliminating the need for additional modules and switches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If two juxtaposed devices with perpendicular planar coils are used to enable communication in both orientations, then communication versatility is improved, but device size and cost increase
Solution Approach 1:
The patent combines two separate communication modules with perpendicular coils into a single integrated module. The first and second planar coils are positioned in perpendicular planes within the same device housing, sharing common structural support and control circuitry, thereby reducing overall device volume while maintaining dual-orientation communication capability
Solution Approach 2:
The single communication module is designed to perform multiple functions by incorporating both the first planar coil for parallel orientation communication and the second planar coil for perpendicular orientation communication, allowing one device to replace two separate devices
2Adaptability or versatility
If switches are used to link communication module to two perpendicular planar coils, then communication versatility is improved, but power distribution is worsened reducing magnetic field range
Solution Approach 1:
The patent employs switchable circuitry that dynamically connects the communication module to either the first planar coil or the second planar coil based on the required communication orientation. This dynamic switching allows full power to be directed to the active coil without being split between both coils, maintaining optimal magnetic field strength and communication range for the selected orientation
3Device complexity
If a single communication module with switches is used to alternate between two zones, then device complexity is reduced, but communication simultaneity is worsened
Solution Approach 1:
The switching mechanism enables rapid alternation between the first and second planar coils, allowing the single communication module to service both communication zones in sequence. The switching speed is sufficient to maintain effective communication in both zones alternately, achieving practical simultaneity while using only one communication module
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 simultaneous near-field communication in two distinct zones with improved performance and reduced size, enhancing integration and cost-effectiveness, particularly suitable for applications like vehicle access and mobile device interactions.
Implementation Method 1
Communication by magnetic coupling is possible if a user positions an appliance containing a coil close to a planar coil in a device
Implementation Method 2
Communication by magnetic coupling does not work if the user positions the coil in the appliance perpendicular to the planar coil in the device
Data Source
AI summary
Disclosed is a communication device using magnetic coupling including a communication module linked to a first planar coil (100). The first coil (100) is designed to form a magnetic field in which the field lines are orthogonal to the plane of the first coil (100) in a first zone (10) of the plane. The device includes a unit for orienting the magnetic field such that the field lines are not orthogonal to the plane of the first coil (100) in a second zone (20) of the plane.