RFID Scan Triggering via Image Recognition
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Solution Overview
Problem
Existing RFID scanners lack the ability to differentiate between items with and without RFID tags, leading to unnecessary power drain and potential RF interference, as they typically assume the presence of a tag for every item, triggering scans regardless of whether a tag is present.
Innovation Solution
Implementing a system that uses image recognition via a camera and processor to determine if an item has an RFID tag before triggering a scan, utilizing a database of item images to discriminate between tagged and untagged items, thereby avoiding unnecessary scans and reducing battery drain and RF interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID scanners trigger scans for every item assuming tag presence, then scan coverage is maximized, but battery power is wasted and RF interference increases
Solution Approach 1:
The system performs a preliminary visual inspection using an imaging device before triggering the RFID scanner. The processor analyzes images of items to determine whether they have RFID tags attached, and only triggers the scanner if a tag is detected. This preliminary action prevents unnecessary scans and reduces power consumption while maintaining reliable scan coverage for items that actually have tags.
2Productivity
If RFID scanners trigger scans for every item, then all items are processed, but unnecessary RF signals cause interference with nearby devices
Solution Approach 1:
The imaging device captures images of items before they enter the scanning process. The processor analyzes these images to identify items with RFID tags and only triggers scans for those items. This preliminary filtering action reduces the number of RF signals transmitted, thereby minimizing interference with nearby RFID devices and other electronic equipment while still processing all relevant items.
3Loss of energy
If visual inspection is performed before RFID scanning, then unnecessary scans are avoided, but system complexity increases
Solution Approach 1:
The imaging device serves multiple functions: it captures images of items for visual inspection, stores these images in a database, and enables the processor to identify items with RFID tags. This multi-functional approach allows the system to reduce unnecessary scans and save power without proportionally increasing complexity, as the imaging device handles both documentation and detection tasks.
4Measurement precision
If image recognition is used to identify tagged items, then scan accuracy improves, but processing time increases
Solution Approach 1:
Images of items are captured and stored in a database before the scanning process begins. When an item needs to be scanned, the processor quickly retrieves the pre-captured image from the database and analyzes it to determine tag presence. This preliminary image capture and storage approach enables fast retrieval and analysis during the scanning process, improving tag detection accuracy without significantly increasing overall processing time.
Data Source
AI summary
A system and method for triggering a radio frequency identification, RFID, scan using image recognition includes; storing (300) image attributes of inventoried RFID-tagged items in a database along with information associated with the RFID-tagged items, capturing (302) an image of an item from an imaging device, determining (304) if there is a match between attributes of the captured image compared with the stored image attributes in the database indicating that the item is RFID-tagged, and upon a match determination (304) attempting to read (306) an RFID tag of the item.