RFID Label Verification with Auto Calibration for Product Shipping
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Solution Overview
Problem
Existing systems fail to ensure that each product shipped is correctly labeled with a viable RFID tag and/or barcode label, leading to issues in the supply chain.
Innovation Solution
A self-contained verification system that includes a reader, trigger mechanism, controller, and memory, capable of automatically calibrating to verify the presence and correctness of RFID tags and barcode labels on products, ensuring they are operational and encode the correct information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID tags and barcode labels are applied to products for tracking, then product identification and supply chain tracking are improved, but verification of correct and operational labels is insufficient
Solution Approach 1:
The verification system automatically calibrates itself by detecting the signal strength of test RFID tags and adjusting transmission power levels without manual intervention. The system self-verifies label application by scanning products and automatically comparing encoded information against database records, eliminating the need for manual verification processes.
Solution Approach 2:
The system continuously monitors and adjusts its operation based on feedback from RFID tag responses and barcode scans. The controller receives feedback from the reader about signal strength and verification results, then adjusts transmission power and scanning parameters to optimize performance and ensure accurate verification of product labels.
2Productivity
If manual verification of RFID tags and barcodes is performed, then accuracy of verification is improved, but productivity and speed of verification are reduced
Solution Approach 1:
The system replaces manual verification processes with automated electronic scanning and digital comparison. RFID readers and barcode scanners automatically detect labels, and the controller electronically compares encoded information against database records, eliminating manual inspection while maintaining high accuracy through digital verification.
Solution Approach 2:
The verification system operates continuously as products move through the conveyance system, with RFID readers and barcode scanners constantly scanning for labels. The system maintains continuous verification without interruption, processing multiple products in sequence to achieve high throughput while ensuring each product is verified before leaving the facility.
3Reliability
If transmission power level of RFID reader is fixed, then device complexity is reduced, but reliability of RFID tag reading varies
Solution Approach 1:
The transmission power level of the RFID reader is dynamically adjusted based on the detected signal strength of responding RFID tags. The controller modifies the transmission power parameter in real-time to optimize reading reliability, increasing power when signal strength is weak and decreasing it when signal strength is sufficient, thereby adapting to varying environmental conditions.
Solution Approach 2:
The system changes the transmission power parameter of the RFID reader based on feedback about tag responses and signal strength. By adjusting this critical parameter dynamically, the system optimizes its ability to read RFID tags across different distances and environmental conditions without requiring manual reconfiguration.
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
The system provides robust verification, ensuring that each product shipped has the correct RFID tag and/or barcode label, operational and correctly encoded, with the ability to perform up to 800 scans per minute, and generates verification reports.
Implementation Method 1
RFID tags are designed to read by a dedicated RFID reader using radio frequency
Implementation Method 2
Barcode labels are similarly applied to products to store relevant information
Data Source
AI summary
A system and method of verifying a plurality of articles of manufacture are provided with RFID tags and/or barcode labels and that any applied RFID tag and/or barcode label is encoded with correct information about the article and/or a manufacturer thereof. An automatic calibration process is also disclosed. The system includes a reader; a trigger mechanism coupled with the reader; a controller coupled with the trigger mechanism and the reader; a memory coupled with the controller, said memory having stored therein a database of information concerning articles of manufacture; programming provided in the controller, said programming configured to control the trigger mechanism and the reader; wherein the reader is operable to interrogate an article that comes into a field of view of the trigger mechanism; and wherein the programming is configured to determine if an RFID tag and/or a barcode is applied to the article based on the interrogation.