RFID Foreign Object Detection in Warehouse Containers
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Solution Overview
Problem
In distribution warehouses, there is a challenge in efficiently detecting equipment mixed with articles in containers, which can lead to errors during shipping and inventory management.
Innovation Solution
A foreign object detection system comprising a wireless tag reading device, a mobile terminal, and an information processing device, where a determination unit compares tag data from a container with a registered tag identifier to identify and notify the presence of foreign objects, using RFID technology for non-contact reading and communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual inspection methods are used to detect equipment in containers, then detection accuracy can be maintained, but detection efficiency and time consumption are poor
Solution Approach 1:
The patent replaces manual mechanical inspection with an automated RFID detection system. The reader device automatically scans containers using radio frequency identification technology, eliminating the need for manual visual inspection and physical searching, thereby significantly improving detection efficiency and reducing time consumption.
Solution Approach 2:
The system enables self-service detection where the RFID tags on equipment automatically transmit their identification information when within the reader's detection range. This eliminates the need for manual interaction with each item, allowing the system to autonomously detect and identify equipment across multiple containers.
2Measurement precision
If RFID reading is performed without comparison to registered tag identifiers, then reading speed is fast, but detection accuracy of foreign objects cannot be ensured
Solution Approach 1:
The patent implements a feedback mechanism where the determination unit continuously compares the tag identifiers read by the reader against the registered tag identifiers stored in memory. This feedback loop enables the system to automatically identify mismatches (foreign objects) and trigger notifications, ensuring high detection accuracy while maintaining relatively simple system architecture through automated comparison logic.
3Reliability
If comprehensive scanning of all containers is performed, then detection coverage is complete, but processing time and resource consumption increase
Solution Approach 1:
The system performs preliminary actions by pre-storing registered tag identifiers in memory before the actual detection process. This allows the determination unit to immediately compare read tags against the pre-loaded reference data, enabling rapid identification of foreign objects without requiring comprehensive re-scanning or extensive real-time processing, thus maintaining high reliability while reducing processing time.
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 efficiently detects and notifies foreign objects in containers, allowing for accurate inventory management and preventing errors in shipping by identifying misplaced equipment.
Implementation Method 1
a reader and writer device using short range wireless communication such as radio frequency identification (RFID) is used
Data Source
AI summary
According to one embodiment, detection of a foreign object mixed in a container can be efficiently performed. A foreign object detection device includes: a determination unit configured to determine, based on a reading result of a wireless tag obtained by radiating a radio wave for reading the wireless tag for a container housing an article and a data file in which a tag identifier held by a wireless tag attached to a foreign object different from the article is registered, whether the wireless tag attached to the foreign object is read; and a notification unit configured to notify that the foreign object is detected if it is determined that the wireless tag attached to the foreign object is read.