Multiple Coil Wireless Data Transmission System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless power and data transmission systems using coupled inductor coils face challenges in optimizing transmission frequency due to parasitic elements, managing peak currents, and maintaining bandwidth in varying conditions such as temperature, coil misalignment, and separation, which limits their ability to transmit high-bandwidth data effectively.
Innovation Solution
The system employs multiple interchangeable primary and secondary coils that are electromagnetically coupled but not physically connected, allowing for independent driving of primary coils, proximity sensing, and dynamic adjustment of frequency characteristics through switchable taps and capacitor networks to enhance data and power transfer efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high-inductance coils are used for wireless power transmission, then power transfer capability is improved, but data transmission bandwidth deteriorates
Solution Approach 1:
The system divides the single coil into multiple smaller coils (first coil, second coil, third coil, fourth coil) arranged in a grid pattern. Each coil can be independently controlled and activated. This segmentation allows the system to use smaller inductance values while maintaining overall power transfer capability, thereby enabling higher data transmission bandwidth without sacrificing power transfer performance.
2Device complexity
If single coil configuration is used, then system simplicity is maintained, but adaptability to varying conditions deteriorates
Solution Approach 1:
The system dynamically selects and activates specific coils based on real-time operating conditions such as temperature, coil misalignment, and coil separation. The controller monitors these conditions and adjusts which coils are active, allowing the system to adapt to varying conditions while maintaining optimal performance. This dynamic configuration provides versatility without requiring permanent physical interconnection between coils.
Solution Approach 2:
Each coil in the array is designed to perform multiple functions: power transmission, data transmission, and temperature sensing. The same coil structure serves as both a power carrier and a data carrier, and can also detect temperature changes. This multi-functionality increases system adaptability without proportionally increasing complexity.
3Manufacturing precision
If fixed coil configuration is used, then manufacturing precision requirements are reduced, but bandwidth maintenance under varying conditions deteriorates
Solution Approach 1:
The system uses dynamic coil selection and activation based on real-time feedback about coil position, temperature, and coupling conditions. When coils become misaligned or separated, the controller activates different coil combinations to maintain optimal coupling and bandwidth. This dynamic adjustment compensates for manufacturing tolerances and maintains performance without requiring extremely precise fixed coil configuration.
4Productivity
If multiple coils are used for data transmission, then data bandwidth is improved, but peak current management becomes more difficult
Solution Approach 1:
The system divides the total current demand across multiple smaller coils rather than concentrating it in a single large coil. Each coil carries a portion of the total current, reducing peak current requirements for individual coils. The controller manages current distribution dynamically, activating only the necessary number of coils based on data transmission requirements, thereby simplifying peak current management while maintaining high bandwidth capability.
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 improves bandwidth, data integrity, and reduces costs by enabling efficient high-bandwidth wireless data and power transmission, adapting to operational conditions, and allowing for secure data transfer across isolation barriers.
Implementation Method 1
the primary and secondary coils are electromagnetically, but not physically, coupled such that one or more signals may be passed between the coils
Data Source
AI summary
Multiple coil systems and methods are disclosed in which transmitter and receiver inductors, or coils, are coupled in a configuration for wirelessly transferring data and/or power among them. In preferred implementations, the systems and methods are used for transmitting data using pairs of coupled coils. One preferred aspect of the invention is that the coils are not permanently affixed in physical proximity to one another, but can be moved and/or interchanged.