RFID Tag Reading and Writing via Sequential Antenna Segmentation
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Solution Overview
Problem
Conventional RFID-tag reading/writing methods experience inefficiencies and high error rates due to intermittent transfer and processing stoppages, which hinder continuous data communication and subsequent processing steps.
Innovation Solution
The method involves sequential wireless data communication between multiple device antennas placed along a transfer path, with error detection and reprocessing mechanisms to ensure data reading/writing within the processing time, allowing for improved efficiency and reduced error rates by adjusting transfer speed and using electric wave shielding to manage communication regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transfer stop reading/writing method is used, then data reading/writing can be performed, but processing efficiency drops due to intermittent transfer and stop
Solution Approach 1:
The system divides the data reading/writing process into multiple segments handled by different device antennas (first antenna for initial reading, second antenna for writing, third antenna for verification). This segmentation allows continuous processing without stopping the RFID tag transfer, thereby improving productivity while maintaining reliability through multiple verification steps
Solution Approach 2:
The system implements continuous data reading/writing processing by having multiple device antennas sequentially process RFID tags as they pass through the transfer path. The RFID tag transfer never stops; instead, different antennas perform different operations (reading, writing, verifying) in sequence, eliminating the intermittent stops required by conventional methods and thus improving processing efficiency
2Productivity
If multiple device antennas are used for sequential processing, then processing efficiency improves, but device complexity increases
Solution Approach 1:
Each device antenna is designed with multi-functionality to handle multiple operations. The first device antenna can perform both reading and initial writing, the second antenna performs writing and verification, and the third antenna performs final verification. This universal design reduces the need for specialized antennas for each function, thereby managing device complexity while maintaining high processing efficiency
Solution Approach 2:
The system performs preliminary actions at each antenna stage to prevent downstream failures. The first antenna performs preliminary reading and validation, the second antenna performs preliminary writing with half-time verification, and the third antenna performs final verification. This preliminary action approach ensures that errors are detected early, reducing rework and improving overall processing efficiency
3Reliability
If data writing is reexecuted during transfer, then error rate decreases, but processing time increases
Solution Approach 1:
The system implements periodic verification at specific intervals during the data writing process. The second device antenna performs writing operations and verifies completion at the half-time mark. If verification fails, the system immediately reexecutes the writing operation within the same antenna's processing window. This periodic action approach detects and corrects errors early without requiring complete reprocessing, thereby reducing the overall time loss while improving reliability
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 enhances processing efficiency and lowers error rates by enabling simultaneous data communication across multiple antennas during the RFID tag's transfer, ensuring reliable data reading/writing and optimizing the RFID-tag reading/writing device's performance.
Implementation Method 1
wireless data communication between the first device antenna, the second device antenna or the third device antenna and the RFID tag
Implementation Method 2
electric wave shielding plate provided in the peripheries of the first device antenna and the second device antenna
Data Source
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AI summary
An RFID-tag reading/writing method and reading/writing device improves processing efficiency of wireless data communication and of lowering an error rate of the reading/writing processing while a RFID tag 11 is being transferred are provided. Paying attention to the wireless data communication conducted with the RFID tag 11 along a plurality of device antennas provided on a transfer path 18 of the RFID tag 11, a reading/writing processing time is calculated based on a length of the device antenna faced with an RFID antenna 15 along a direction of the transfer path 18 and a transfer speed of the RFID tag 11 on the transfer path 18, and the wireless data communication is sequentially executed within the reading/writing processing time while the RFID tag 11 is being transferred between a first device antenna 19, a second device antenna 21 or a third device antenna 23 sequentially provided as device antennas on the transfer path 18 from the upstream side toward the downstream side and the RFID tags 11.