Contactless Energy and Data Transmission via Transformer Coupling
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Solution Overview
Problem
Existing contactless energy and data transmission systems face inefficiencies, particularly in transmitting information from sensors back to the energy supply, often requiring excessive energy and heat dissipation due to load modulation, and are prone to interference from electromagnetic fields in industrial settings.
Innovation Solution
A contactless energy and data transmission device utilizing a transformer coupling between primary and secondary inductors, where energy transmission intervals are interrupted to allow data transmission, enabling bidirectional communication over a single channel without additional interfering signals, and using resonant circuits for efficient energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If load modulation is used to transmit information from the sensor back to the energy supply, then bidirectional communication is enabled, but excessive energy is consumed and heat dissipation is required
Solution Approach 1:
The patent implements periodic action by alternating between energy transmission phases and data transmission phases. During energy transmission phases, power is delivered to the secondary unit. During data transmission phases, the primary unit transmits information by modulating the coupling coefficient k between the inductors. This periodic switching enables bidirectional communication without continuous load modulation, significantly reducing energy consumption and heat generation while maintaining information transmission capability.
2Ease of operation
If radio links are used for communication in industrial settings, then wireless communication is achieved, but signal quality deteriorates due to electromagnetic interference
Solution Approach 1:
The patent merges energy transmission and data transmission into a single integrated system using transformer coupling between primary and secondary inductors. The data transmission is achieved by modulating the coupling coefficient k between the same inductors used for energy transfer. This unified approach eliminates the need for separate radio communication channels, thereby avoiding electromagnetic interference from other industrial equipment while maintaining wireless communication capability.
3Adaptability or versatility
If separate channels are provided for energy and data transmission, then functionality is enhanced, but device complexity increases
Solution Approach 1:
The patent implements multi-functionality by using the same transformer coupling system for both energy transmission and data transmission. The primary and secondary inductors serve dual purposes: transferring power during energy phases and transmitting data during data phases by modulating the coupling coefficient. This universal approach provides complete transmission functionality while minimizing device complexity, as no separate communication hardware is required.
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 energy transmission while simplifying the secondary unit's design, reducing interference, and enabling reliable bidirectional communication, thus improving energy efficiency and signal quality in industrial environments.
Implementation Method 1
a transformer coupling distance is formed between the primary inductor and the secondary inductor
Implementation Method 2
using resonant circuits for efficient energy transfer
Data Source
AI summary
The present invention relates to a device for the contactless energy and data transmission, having a primary unit provided with a primary inductor, and a secondary unit provided with a secondary inductor. The primary and secondary units are at least temporarily so relatively positioned that between the primary inductor and the secondary inductor a transformer coupling distance is formed. Furthermore, the primary unit is set up for the contactless transmission of energy to the secondary unit and the secondary unit is designed for supplying terminals connected thereto. The device is further developed in that the primary unit has means for interrupting the energy transmission across the transformer coupling distance in energy transmission intervals and the secondary unit has means for detecting the energy transmission intervals. Further, the secondary unit has means for transmitting data in the energy transmission intervals and/or the primary unit has means for transmitting data to the secondary unit. The invention also relates to a method for the contactless energy and data transmission.