RFID Reader Configurator for Dynamic Interrogation Mode Selection
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Solution Overview
Problem
Conventional RFID readers face inefficiencies in reading multiple tags simultaneously, leading to prolonged reading times and potential undetection of tags due to limited interrogation modes and sequential polling processes.
Innovation Solution
A method for automatically configuring RFID readers to operate in optimal interrogation modes based on specific requests for RFID tag data, selecting between modes that read all tags or only previously unread tags to minimize read operations and time, using EPC Gen2 standard-compatible sessions and pre-selection criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional RFID readers use sequential polling processes with limited interrogation modes, then the system structure remains simple, but the reading time increases and tag detection reliability decreases
Solution Approach 1:
The system dynamically selects between multiple interrogation modes (Session 0, 1, 2, and 3) based on real-time requirements. The RFID reader can switch between different sessions to read all tags or only unread tags, making the system adaptable to changing detection needs and improving both reliability and time efficiency
Solution Approach 2:
The invention changes the operational parameters of the RFID reader by implementing multiple interrogation modes with different reading criteria. Each session mode represents a different parameter setting that can be activated based on whether complete tag reading or selective reading is required, thereby optimizing performance
2Productivity
If RFID readers use multiple interrogation modes to improve reading efficiency, then the productivity increases, but the device complexity increases
Solution Approach 1:
The RFID reader is designed with multi-functionality to support multiple interrogation modes (Sessions 0-3) within a single device. This universal design allows the same hardware to perform different reading operations depending on the selected mode, improving productivity without requiring separate devices for each function
Solution Approach 2:
The system performs preliminary selection of the appropriate interrogation mode before initiating the reading process. By pre-determining which session to use based on the detection requirements, the system avoids unnecessary complexity during execution and streamlines the actual reading operation
3Measurement precision
If RFID readers perform complete tag reading to ensure no tags are missed, then the measurement precision improves, but the number of read operations increases
Solution Approach 1:
The system implements partial action by providing selective reading options where only unread tags need to be read in certain sessions. This partial approach is sufficient when complete re-reading is not necessary, reducing the number of operations while maintaining adequate measurement precision for the given task requirements
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 enables the RFID reader to efficiently read RFID tag data by selecting the most suitable interrogation mode, reducing the number of read operations and time required, while ensuring that all necessary tags are detected, even in large environments like retail stores.
Implementation Method 1
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 performed by a processor includes receiving in a digital or analog format, from a first computing device, a first request for first radio frequency identification (RFID) tag data associated with a first plurality of RFID tags and receiving in a digital or analog format, from a second computing device, a second request for second RFID tag data associated with a second plurality of RFID tags. In response to the first request and the second request, the method further includes automatically selecting a selected one of a first interrogation mode and a second interrogation mode based on the first request and the second request, and automatically transmitting configuration information to an RFID reader to operate in the selected interrogation mode.