RFID Loop Antenna with Eddy Current Trap for Reliable Tag Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing processing systems are static and limited in product variety, requiring extensive modifications to produce different products due to non-reconfigurable devices and processes, necessitating additional components for new tasks.
Innovation Solution
An RFID system incorporating a loop antenna assembly with capacitive components and an eddy current trap, along with a magnetic field focusing assembly using a split ring resonator, allows for the detection and actuation of RFID tags to enable flexible product configuration and component placement verification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If processing systems use non-reconfigurable devices and processes, then device complexity is reduced, but adaptability deteriorates
Solution Approach 1:
The system performs preliminary verification of component placement and product configuration using RFID tags before actual processing begins. This allows the static processing system to adapt to different products through pre-validated component arrangements, eliminating the need for extensive reconfiguration while maintaining adaptability.
Solution Approach 2:
The patent replaces mechanical reconfiguration mechanisms with an RFID-based verification system. Instead of physically reconfiguring devices for different products, the system uses electromagnetic fields to detect and verify component placement, substituting mechanical adaptability with information-based verification.
2Reliability
If RFID antenna assembly uses larger loop antenna to increase detection range, then detection capability is improved, but eddy current interference increases
Solution Approach 1:
The patent extracts the harmful eddy currents from the system by introducing an eddy current trap that captures and contains the interfering currents separately. This allows the loop antenna to maintain its detection range while the harmful eddy currents are isolated and prevented from interfering with RFID tag detection.
Solution Approach 2:
The eddy current trap acts as an intermediary element between the loop antenna and the RFID tags. It mediates the electromagnetic field interactions by providing a designated path for eddy currents, preventing them from disrupting the RFID communication while allowing the antenna to function effectively.
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 system enhances the ability to reconfigure processing systems for various products without extensive modifications, ensuring accurate component placement and efficient operation by utilizing RFID technology for real-time verification and actuation.
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
Figure 1
Figure 2
Figure 3
AI summary
An RFlD 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 capaeitivc component coupled to the inductive component, and an eddy current trap positioned a predetermined distance from the loop antenna assembly.