Common Coil Wireless Power and Data Transmission Switching
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Solution Overview
Problem
Existing non-contact transmission systems using magnetic fields for both power and data transmission often require separate coils, leading to increased costs, larger size, and safety concerns due to differences in system configurations between power and data transmission modes.
Innovation Solution
An electronic apparatus and transmission system utilizing a common coil for both power reception and data transmission, with switch control based on signal frequency components to manage the ON/OFF state of changeover switches, preventing circuit damage from configuration differences during switching between power and data transmission modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate coils are used for power transmission and data transmission, then system reliability is improved, but device complexity and cost increase
Solution Approach 1:
The patent combines the power reception coil and data transmission coil into a single common coil structure. This merging approach reduces the number of coils from two to one, thereby decreasing device complexity and cost while maintaining the ability to perform both power transmission and data transmission functions through the same physical component.
Solution Approach 2:
The common coil is designed to serve multiple functions: it acts as both the power reception coil for electromagnetic induction-based power transmission and the data transmission coil for magnetic field-based data communication. This multi-functionality eliminates the need for separate dedicated coils, reducing overall system complexity while preserving functional reliability through proper mode switching control.
2Device complexity
If a common coil is used for both power reception and data transmission, then device complexity is reduced, but safety deteriorates due to configuration differences between modes
Solution Approach 1:
The patent implements dynamic switching control that adapts the coil's operational mode based on real-time requirements. A control unit dynamically switches between power reception mode and data transmission mode, adjusting the electrical configuration and connection states accordingly. This dynamic adaptation allows the single common coil to safely handle different operational requirements without permanent damage from configuration mismatches.
Solution Approach 2:
The control unit performs preliminary detection and determination before switching modes. It detects the presence and type of external devices, determines the appropriate operational mode in advance, and prepares the circuit configuration beforehand. This preliminary action prevents improper configuration and potential damage by ensuring the coil is properly set up for the intended operation before actual power or data transmission begins.
3Reliability
If separate coils are used for power and data transmission, then safety is improved, but cost and size increase
Solution Approach 1:
The patent merges the previously separate power reception coil and data transmission coil into a single common coil structure. This consolidation reduces component count, manufacturing complexity, and overall cost while maintaining safety through dynamic switching control that properly manages the coil's operational state for each transmission mode.
4Reliability
If separate coils are used for power and data transmission, then system reliability is improved, but device size increases
Solution Approach 1:
The patent combines two separate coils into one common coil structure, directly reducing the physical space required for coil components. This merging approach decreases device volume and enables more compact form factors while maintaining system reliability through intelligent switching control that ensures proper operational configuration for each mode.
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 reduces the number of coils needed, achieves cost reduction and downsizing, and enhances safety by preventing circuit damage during mode switching, while maintaining efficient power and data transmission using a magnetic field.
Implementation Method 1
receiving a signal wirelessly from a feed unit via magnetic inductance
Implementation Method 2
applying a first filter to the received signal to generate a first frequency component
Implementation Method 3
applying a second filter to the received signal to generate a second frequency component
Data Source
AI summary
An electronic apparatus includes switch control circuitry configured to determine whether a received signal is for a power receiving operation or a data receiving operation based on a level of a frequency component of the received signal, select the power-reception operation or a data-transmission operation based on the determination, and switch to the power-reception operation or the data-transmission operation based on the selection.