Multi-frequency Bulk RFID Tag Commissioning via Parallel Channel Segmentation
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Solution Overview
Problem
Existing methods for bulk commissioning of RFID tags do not effectively utilize plural regulatory communications bands, leading to inefficiencies in programming large numbers of tags, especially in confined spaces where interference and power loss are concerns.
Innovation Solution
A method and system that utilize a single reader with multiple communications channels operating across different regulatory bands to initiate and coordinate write sequences with RFID tags, allowing simultaneous communication and programming across multiple channels without interference, using a common antenna and data processing hardware to track and manage transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single reader uses a single communications channel to program RFID tags, then communication simplicity is maintained, but programming speed and efficiency deteriorate due to sequential processing
Solution Approach 1:
The reader is segmented into multiple independent communications channels (first channel in first band, second channel in second band), each capable of autonomous tag programming. This segmentation enables parallel processing of multiple tags simultaneously, directly resolving the contradiction by improving productivity through multi-channel operation while maintaining manageable complexity through modular channel design.
Solution Approach 2:
The reader is designed with multi-functionality to operate across multiple regulatory communications bands simultaneously. Each channel can independently communicate with tags using different frequency bands (e.g., 902-928 MHz and 2.4 GHz), allowing the single reader device to perform multiple programming operations in parallel, thus improving productivity without requiring multiple separate readers.
2Productivity
If passive RFID tags receive continuous signal during write process, then writing reliability is improved, but time consumption increases due to inability to parallelize operations
Solution Approach 1:
The bulk commissioning process is segmented into multiple independent write operations conducted simultaneously on different channels. Each channel maintains continuous signal transmission to its assigned tag, ensuring write reliability, while the overall system achieves improved productivity through parallel execution of multiple segmentation-based write sequences.
Solution Approach 2:
The system transitions from single-dimensional sequential programming to multi-dimensional parallel programming by introducing frequency band as an additional operational dimension. Multiple tags are programmed simultaneously across different frequency bands (first regulatory band, second regulatory band), enabling bulk commissioning efficiency improvement while each individual tag still receives continuous signal for reliable writing.
3Productivity
If multiple regulatory bands are utilized simultaneously, then programming capacity is improved, but interference between bands may occur
Solution Approach 1:
The electromagnetic spectrum is segmented into distinct regulatory bands (e.g., 902-928 MHz band and 2.4 GHz band), with each channel operating independently in its assigned band. This frequency segmentation prevents interference between channels by ensuring spectral separation, while still enabling parallel tag programming across multiple bands to improve overall productivity.
4Area of stationary object
If confined space tagging is performed, then space utilization is improved, but signal interference and power loss increase
Solution Approach 1:
The system uses frequency dimension to resolve spatial interference problems. By operating tags in confined spaces across multiple frequency bands simultaneously, the invention transforms the problem from a spatial constraint to a frequency-based solution, where each band provides independent communication pathways that reduce mutual interference and improve signal transmission stability in limited physical space.
Data Source
AI summary
A system and method for the rapid bulk commissioning of RFID tags includes exploiting simultaneous writing of plural tags via isolated communications bands, avoiding write acknowledgement, collision/retransmission, and other delays.