RFID system with an eddy current trap
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Solution Overview
Problem
Existing RFID systems in processing systems are static and require extensive modifications to produce different products, limiting their configurability and efficiency due to non-reconfigurable devices and processes.
Innovation Solution
An RFID antenna assembly is designed with a loop antenna, capacitive components, and an eddy current trap, allowing for the detection of specific RFID tags and enabling RFID-based actuation, while using a magnetic field focusing assembly with a split ring resonator to enhance detection precision and prevent false readings from adjacent tags.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a loop antenna assembly is used for RFID detection, then detection capability is provided, but false readings from adjacent tags and cross-contamination of microingredients occur
Solution Approach 1:
An eddy current trap is introduced as an intermediary component between the loop antenna assembly and adjacent RFID tags. The trap selectively interacts with electromagnetic fields from adjacent tags to generate eddy currents that cancel or reduce the interfering signals, thereby preventing false readings and cross-contamination while allowing accurate detection of the target RFID tag.
2Measurement precision
If the RFID system is designed for specific product detection, then detection precision is improved, but system reconfigurability for different products is limited
Solution Approach 1:
The eddy current trap is designed with universal applicability to work with different loop antenna assemblies and RFID tag configurations. The trap can be repositioned and adjusted to accommodate various product types and detection requirements, allowing the same basic system architecture to serve multiple functions and different products without requiring complete system redesign.
Solution Approach 2:
The system incorporates adjustable and reconfigurable elements, including the ability to reposition the eddy current trap and modify antenna assembly characteristics. This dynamic capability allows the system to adapt to different detection scenarios and product types, maintaining precision across multiple applications.
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 enhances the configurability and efficiency of RFID systems in processing systems by allowing precise detection of RFID tags and preventing cross-contamination of microingredients, ensuring accurate product formulation and system operation.
Implementation Method 1
an eddy current trap positioned a predetermined distance from the loop antenna assembly
Implementation Method 2
an inductive component including a loop antenna assembly
Implementation Method 3
at least one capacitive component coupled to the inductive component
Data Source
AI summary
An RFID antenna assembly configured to be energized with a carrier signal is disclosed. The RFID antenna assembly includes an inductive component including a loop antenna assembly, at least one capacitive component coupled to the inductive component, and an eddy current trap positioned a predetermined distance from the loop antenna assembly.