RFID Tag Detection System with Parallel Processing
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Solution Overview
Problem
Existing RFID-based detection systems for securing access to hazardous areas are not sufficiently fraud-proof due to processing time delays and risks of collisions with nearby tags.
Innovation Solution
A secure detection method and system using a read/write station with an RFID communication interface, first and second processing means, and a unique identifier stored in both, allowing for rapid and robust detection of an RFID electronic tag by writing and reading control data, and generating output signals based on verification checks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID-based detection systems are used to improve fraud-proofing, then security and reliability are improved, but processing time increases and collision risks with nearby tags occur
Solution Approach 1:
The patent extracts only the necessary identification data from RFID tags rather than processing complete tag data. The system reads and compares specific identification fields from tags in both directions (entering and leaving the zone), taking out only the essential security-critical information while ignoring extraneous data, thus reducing processing time while maintaining fraud-proofing capabilities
Solution Approach 2:
The system performs preliminary actions by pre-configuring the detection zone with expected tag identification data before actual detection occurs. When a tag enters or leaves the zone, the system immediately compares the tag's identification against the pre-stored reference data, enabling rapid verification without time-consuming real-time analysis, thus reducing processing time while maintaining security
2Reliability
If RFID-based detection systems are used to improve fraud-proofing, then security and reliability are improved, but collision risks with nearby tags increase
Solution Approach 1:
The patent applies local quality by creating a spatially differentiated detection system with distinct entry and exit zones. Each zone independently monitors RFID tags in its specific location, allowing the system to track which zone a tag is in and process only relevant tag data from that specific location. This localized approach prevents collisions between tags in different zones and reduces interference, maintaining fraud-proofing while eliminating collision risks
Solution Approach 2:
The detection system is segmented into multiple independent detection zones (entry zone and exit zone) rather than treating the entire area as one detection space. Each zone has its own detection logic and processing pathway, allowing simultaneous operation without interference. This segmentation isolates tag detection events spatially, preventing collision risks while maintaining comprehensive security monitoring
3Device complexity
If magnetic coding sensors are used to stop the machine when access is opened, then simplicity is maintained, but fraud-proofing guarantees are insufficient
Solution Approach 1:
The patent introduces RFID tags as intermediary carriers of identification information and uses bidirectional reading (from both entry and exit zones) as a mediator to verify authentic access events. This intermediary layer provides fraud-proofing capabilities that magnetic sensors cannot achieve, while the overall system remains relatively simple through the use of standard RFID technology and straightforward comparison logic
Data Source
AI summary
The invention relates to a method and a system for the secure detection of an RFID electronic tag (ET1). This detection system comprises a read/write station (1), said station (1) comprising first processing means (12) and second processing means (13), the first processing means (12) and the second processing means (13) making it possible to read in parallel control data (CD) previously written in the RFID electronic tag (ET1) when the RFID electronic tag (ET1) is located within range of the station. The station controls the state of the machine according to the processing performed.