RFID Inventory Tracking System with Floor-Mounted Tags
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Solution Overview
Problem
Existing inventory tracking systems in storage facilities face challenges such as manual errors, signal interference, and invasive installation methods for RFID tags, leading to inefficiencies and inaccuracies in product location tracking and management.
Innovation Solution
An RFID-based inventory tracking system that includes readers on movable assets like forklifts, product designation tags, and location designation tags placed non-invasively on the floor, using a unique ID system and wireless communication to automatically detect and manage product movement and location without operator input, with a focus on durable and easily readable tags that mitigate detuning issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If RFID tags are placed on the floor to designate locations, then automatic location detection is improved, but signal interference and detuning occur
Solution Approach 1:
The patent introduces an intermediary layer (conductive material layer) between the RFID tag and the metal floor to prevent direct interaction that causes detuning. This intermediary layer acts as a barrier that blocks harmful electromagnetic interference while allowing the RFID signal to pass through, thus resolving the contradiction between achieving accurate location detection and avoiding signal interference.
Solution Approach 2:
The patent uses adhesive labels with integrated RFID tags that can be easily applied and removed without permanent installation. These disposable-style tags are attached to the floor surface using adhesive, allowing for easy replacement if signal issues arise, while avoiding the need for permanent embedding that would cause detuning.
2Reliability
If RFID tags are embedded in the floor for stable location marking, then location designation reliability is improved, but invasive installation causes damage and increases complexity
Solution Approach 1:
The patent divides the location marking system into separate, modular adhesive labels that can be independently applied to different floor locations. Each label is a self-contained unit with RFID tag, conductor layer, and adhesive backing, allowing for easy installation without invasive floor modifications while maintaining reliable location designation.
Solution Approach 2:
The patent replaces mechanical embedding methods (drilling, anchoring) with adhesive bonding. The conductive adhesive layer provides both electrical connection and mechanical attachment in a single non-invasive step, eliminating the need for physical floor penetration while ensuring reliable tag positioning.
3Device complexity
If manual tracking methods are used to monitor product movement, then system complexity is reduced, but labor time and error rates increase
Solution Approach 1:
The patent implements a self-tracking system where RFID tags automatically detect and report their own location changes as they move through the facility. The system autonomously updates product positions without requiring manual scanning or worker intervention, thereby reducing both operational complexity and time loss through automated self-monitoring.
Solution Approach 2:
The patent establishes continuous automatic tracking of product locations throughout movement, eliminating intermittent manual checks. The RFID system continuously monitors and updates product positions in real-time, ensuring uninterrupted tracking coverage while reducing overall time investment compared to periodic manual verification.
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 a reliable, efficient, and accurate method for tracking products within storage facilities, reducing errors and improving workflow by enabling automatic detection and management of product movement and location, while avoiding the need for invasive installation and minimizing signal interference.
Implementation Method 1
An RFID-based inventory tracking system includes an RFID reader disposed on a movable asset, a first plurality of RFID tags disposed on products, and a second plurality of RFID tags disposed throughout the storage facility
Data Source
AI summary
An asset management and tracking system for use in a facility having a product designation RFID tag having product information is attached to a product and at least one location designation RFID tag having location information. The system includes a RFID reader and a portable communication device. The RFID reader reads at least one of the product designation RFID tag and the at least one location designation RFID tag and the portable communication device receives product information from and transmits product information to an asset tracking and management device. The RFID reader transmits product information read from the product designation RFID tag and the location information read from the location designation RFID tags to the portable communication device. The portable communication device, in turn, transmits the received product information and location information to the asset tracking device and queries the asset tracking device for additional product and location information.