RFID Reader Location Correction via Tag History
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Solution Overview
Problem
Conventional mobile RFID reader systems rely on manual entry of location information, which can lead to incorrect location determination of RFID tags if entered incorrectly or not updated properly.
Innovation Solution
A computer-implemented method and system that processes product identification information from RFID tags to compare and update the apparent location of an RFID reader with prior location information, automatically correcting any discrepancies to ensure accurate location tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual location entry is used in RFID readers, then ease of operation is improved, but location accuracy deteriorates due to potential incorrect or outdated manual input
Solution Approach 1:
The system continuously monitors RFID tag locations and provides feedback to automatically update the reader's apparent location. When the reader scans tags at a different location than previously recorded, the system detects this discrepancy and automatically corrects the apparent location, creating a closed-loop feedback mechanism that maintains location accuracy without requiring manual intervention.
Solution Approach 2:
The RFID reader performs self-location correction by autonomously analyzing the locations of scanned RFID tags. The system compares current tag locations with historical data and automatically updates its own apparent location without external intervention, enabling the reader to self-correct location errors and maintain accuracy.
2Measurement precision
If automatic location updating is implemented, then location accuracy is improved, but device complexity increases due to additional processing requirements
Solution Approach 1:
The system performs preliminary actions by pre-storing historical location data of RFID tags in a database before the actual location correction is needed. When a discrepancy is detected, the system retrieves pre-stored historical data to compare with current readings, enabling quick and accurate location correction without requiring complex real-time analysis.
Solution Approach 2:
A database serves as an intermediary component that stores historical RFID tag location data. This intermediary structure simplifies the complexity by providing a ready-to-query reference data source, allowing the reader to efficiently compare current readings with historical data without requiring complex computational algorithms.
3Device complexity
If manual location entry is used, then device complexity is reduced, but reliability deteriorates due to human error in location input
Solution Approach 1:
The system continuously monitors RFID tag locations and provides feedback to automatically update the reader's apparent location. When the reader scans tags at a different location than previously recorded, the system detects this discrepancy and automatically corrects the apparent location, creating a closed-loop feedback mechanism that maintains location accuracy without requiring manual intervention.
Solution Approach 2:
The RFID reader performs self-location correction by autonomously analyzing the locations of scanned RFID tags. The system compares current tag locations with historical data and automatically updates its own apparent location without external intervention, enabling the reader to self-correct location errors and maintain accuracy.
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 ensures accurate location determination of RFID tags by automatically updating the RFID reader's location based on historical data from the tags, reducing errors caused by manual input and improving inventory management efficiency.
Implementation Method 1
The RFID reader includes an antenna and a transceiver. The transceiver includes a transmitter, a receiver, and a decoder for processing data in the signal emitted by the RFID tag. When the antenna of the RFID reader is within an effective range for activating the transponder, the transponder is activated by the electromagnetic field from the antenna of the RFID reader.
Data Source
AI summary
According to an embodiment, a computer-implemented method of managing inventory includes receiving, at an antenna operatively coupled to a radio-frequency identification (RFID) reader, product identification information encoded in an RF signal transmitted by a plurality of RFID tags. Each of the RFID tags is associated with a respective one of a plurality of products. The method further includes processing, by a processor and using the product identification information, information contained in a portion of the encoded RF signal to compare apparent location information associated with the RFID reader with prior location information associated with at least one of the products, and updating, by the processor, the apparent location information to match the prior location information where the apparent location information is different than the prior location information.