RFID Container Scanning for Line-of-Sight-Free Product Detection
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Solution Overview
Problem
Self-checkout systems with barcode scanners face limitations such as distance and line-of-sight requirements, barcode damage, forgery issues, and time-consuming individual scanning processes, which do not significantly reduce queues and are inefficient for product detection and payment.
Innovation Solution
A system utilizing radio frequency tags and multiple RFID scanners attached to a container, where the scanners generate signals with tag identification data and time stamps, allowing a computer server to determine product identity and presence for facilitating payment, regardless of line-of-sight, and using a database for product data retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If barcode scanners are used at self-checkout counters, then payment facilitation is improved, but the requirement for close proximity and line of sight increases device complexity and limits operational flexibility
Solution Approach 1:
The patent replaces the mechanical/optical barcode scanning system with an RFID (radio frequency identification) system. Instead of using optical scanners that require line-of-sight and close proximity, the invention uses radio frequency signals to communicate between tags on products and readers at the checkout counter, eliminating the physical constraints of barcode scanning.
Solution Approach 2:
The patent introduces RFID tags as intermediary carriers of product information. Instead of directly scanning barcodes on products, the system uses RFID tags that can be read remotely, acting as mediators between the product and the detection system, thereby eliminating the need for direct visual contact.
2Difficulty of detecting and measuring
If barcodes are exposed on the exterior of products for scanning, then detection capability is improved, but vulnerability to damage and forgery increases
Solution Approach 1:
The patent embeds RFID tags within or attached to products, similar to nested dolls. The RFID tag contains the product identification information internally rather than exposing it externally as a barcode. This nesting approach protects the identification data from environmental damage while maintaining detection capability through radio frequency penetration.
Solution Approach 2:
The patent uses RFID tags that contain copied product identification data in a more secure and durable format. Instead of relying on the physical barcode printed on the product packaging, the system creates a digital copy of the product information stored in the RFID tag, which can be read remotely and is more difficult to forge or damage.
3Measurement precision
If individual barcodes are scanned sequentially at self-checkout counters, then product detection accuracy is improved, but checkout time increases significantly
Solution Approach 1:
The patent merges multiple product detection operations into a single simultaneous process. Instead of scanning each barcode individually in sequence, the RFID reader can detect and read multiple RFID tags at the same time when products are placed in the container, combining multiple detection tasks into one operation and dramatically reducing checkout time.
Solution Approach 2:
The patent implements preliminary detection by reading RFID tags as products are placed in the container during the checkout process. Instead of waiting until the end to scan all barcodes, the system continuously and preliminarily detects products as they are added to the container, maintaining accurate product lists without requiring time-consuming sequential scanning.
4Productivity
If self-checkout counters are implemented to reduce queues, then customer service efficiency is improved, but the time-consuming scanning process prevents significant queue reduction
Solution Approach 1:
The patent enables continuous product detection throughout the checkout process. As customers place products in the container, the RFID reader continuously and automatically detects each product without interruption. This continuous action eliminates the stop-and-go nature of manual barcode scanning, maintaining steady progress and reducing overall checkout time despite multiple products being processed.
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 system enables efficient and accurate detection and payment of products without line-of-sight requirements, reduces checkout time, and minimizes queue lengths by allowing simultaneous scanning of multiple products, while being robust against damage and forgery.
Implementation Method 1
two or more scanners attachable to a container for holding the product, wherein each scanner is configured to: (i) receive tag identification data from the tag when the tag is within communication range of the scanner
Data Source
AI summary
A system and method for facilitating detection and payment of a product. The product has a radio frequency tag attached thereon and the system comprises: two or more scanners attachable to a container for holding the product, wherein each scanner is configured to: (i) receive tag identification data from the tag when the tag is within communication range of the scanner; (ii) generate a signal that is associated with the tag identification data and a time of receipt of the tag identification data; and a computer server communicatively coupled with the two or more scanners, wherein the computer server is configured to: (i) receive the signals from the two or more scanners; and (ii) determine an identity of the product and a presence of the product in the container based on the signals, wherein the presence of the identified product is used for facilitating payment of the product.