Easily Attachable RFID Tag Design for Floor Detuning Control
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Solution Overview
Problem
Existing RFID tags placed on storage facility floors face issues such as detuning, requiring invasive installation methods, and poor communication with interrogators due to signal interference, leading to inefficiencies and errors in inventory tracking.
Innovation Solution
A location designation RFID tag with a long, thin antenna and dual adhesive layers that allow non-invasive placement, reduce detuning, and maintain strong communication connections with interrogators, even under heavy machinery traffic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If RFID tags are placed on storage facility floors, then inventory tracking coverage is improved, but signal interference and detuning occur leading to poor communication with interrogators
Solution Approach 1:
The patent introduces a buffer layer as an intermediary between the RFID tag and the floor surface. This buffer layer acts as a mediator that isolates the tag from direct contact with the floor, preventing signal interference and detuning while maintaining the tag's functionality for inventory tracking
Solution Approach 2:
The patent employs a thin film buffer layer to protect the RFID tag from the floor surface. This thin film structure provides sufficient isolation to prevent signal interference while maintaining flexibility and not interfering with the tag's communication capabilities
2Stability of the object's composition
If RFID tags are securely attached to floors, then placement stability is improved, but invasive installation methods are required damaging the floor surface
Solution Approach 1:
The buffer layer serves as an intermediary that enables secure attachment of the RFID tag to the floor without direct contact between the tag and floor surface. This allows stable placement while avoiding invasive installation methods that would damage the floor
Solution Approach 2:
The patent segments the attachment system into separate components: the RFID tag, the buffer layer, and the adhesive layer. This segmentation allows the tag to be protected from direct floor contact while maintaining stable placement through the adhesive bond between the buffer layer and floor
3Reliability
If thick buffer layers are used to prevent detuning, then signal interference is reduced, but the RFID tag becomes difficult to drive over with heavy machinery
Solution Approach 1:
The patent optimizes the thickness parameter of the buffer layer to achieve the minimum necessary for preventing detuning and signal interference. By carefully controlling this parameter, the design provides sufficient protection while keeping the overall profile low enough for heavy machinery to drive over without difficulty
4Measurement precision
If RFID tags are placed on floors for inventory tracking, then tracking accuracy is improved, but the tags become misplaced or destroyed due to heavy machinery traffic
Solution Approach 1:
The buffer layer acts as a protective intermediary that shields the RFID tag from direct contact with heavy machinery and the floor surface. This protection prevents the tag from being misplaced or destroyed while maintaining its functionality for accurate inventory tracking
Solution Approach 2:
The buffer layer provides beforehand cushioning and protection for the RFID tag against mechanical damage from heavy machinery traffic. This protective measure is built into the tag structure in advance, preventing damage before it occurs while allowing the tag to remain in place for accurate tracking
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
Enables efficient, accurate, and non-destructive installation and relocation of RFID tags, enhancing inventory tracking by maintaining reliable communication with interrogators and reducing errors.
Implementation Method 1
An adhesive layer may be disposed on a second side of the buffer layer. The adhesive layer may bond the RFID tag to a floor surface
Implementation Method 2
RFID tags placed on storage facility floors face issues such as detuning, requiring invasive installation methods, and poor communication with interrogators
Data Source
AI summary
A location designation RFID tag for use in a storage facility includes an inlay, a first layer disposed on a first side of the inlay and having a first thickness, and a second layer disposed on a second side of the inlay. The first layer has a first thickness and the second layer has a second thickness. The inlay includes substrate, an antenna disposed on the substrate, and an integrated circuit disposed on the substrate. The location designation RFID tag may be easily and non-invasively placed and relocated on a floor of a storage facility in a manner that mitigates, and likely resolves, the issues experienced by known RFID tags when placed on a floor. Utilizing an inlay having a long, thin antenna, reduces the overall thickness of the location designation RFID tag, which allows layers to be disposed on the inlay that include a sufficient thickness to improve durability, mitigate detuning, and allow movable devices to readily pass over the location designation RFID tag.