Reactive RFID Strap for Metallic and 3D Object Tagging
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Solution Overview
Problem
Existing RFID technologies face challenges in attaching and tracking metallic objects and three-dimensional (3D) objects with non-planar surfaces, as traditional RFID tags are not easily adaptable to these shapes, and there is a need for a removable and flexible RFID strap that can induce a current flow in metallic objects.
Innovation Solution
A reactive RFID strap secured to a plastic clip for easy attachment to metallic objects, which can induce a far field RFID antenna response by coupling with electric or magnetic fields, and a method to form conductive materials on 3D objects to create adaptable RFID tags that conform to their geometry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional RFID tags are used on metallic objects, then identification can be achieved, but the tags cannot be easily attached or removed and cannot induce current flow in the metallic object
Solution Approach 1:
The RFID system is divided into two separate components: a reactive RFID strap that can be easily attached and removed from metallic objects, and the metallic object itself which serves as the antenna. This segmentation allows the strap to be easily operable while the metallic object provides the reliable RFID functionality through induced current flow.
Solution Approach 2:
The reactive RFID strap acts as an intermediary component between the RFID reader and the metallic object. It couples to the metallic object and induces current flow in it, enabling the metallic object to function as an antenna without requiring direct integration of traditional RFID electronics into the metal.
2Adaptability or versatility
If traditional RFID tags are attached to non-planar surfaces, then identification is possible, but the tags do not conform well to complex geometries
Solution Approach 1:
The conductive material is applied in a dynamic process that compensates for the three-dimensional shape and position of the object. The material can be deposited to conform to varying surface geometries, allowing the RFID tag to adapt to non-planar surfaces while maintaining manufacturing precision through controlled deposition processes.
Solution Approach 2:
The physical parameters of the conductive material are changed to enable it to conform to three-dimensional surfaces. By controlling the deposition process and material properties, the conductive layer can be formed on complex geometries while maintaining the electrical connectivity needed for precise RFID positioning and orientation.
3Adaptability or versatility
If conductive material is formed on 3D objects to create RFID tags, then adaptability to complex surfaces is improved, but the process complexity increases
Solution Approach 1:
The mechanical process of attaching traditional RFID tags to three-dimensional surfaces is replaced with a deposition process for forming conductive material. This substitution eliminates the need for mechanical alignment and attachment steps, reducing manufacturing process complexity while maintaining adaptability to complex surfaces.
Solution Approach 2:
The invention uses a deposition process that can be visually monitored and controlled, similar to how color changes are used in manufacturing processes. The conductive material is deposited in a controlled manner that allows for process monitoring and quality control, reducing complexity through standardized deposition techniques.
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 secure and flexible RFID tagging on metallic and 3D objects, allowing for effective tracking and identification by inducing a far field antenna response, even on complex surfaces, with improved attachment methods and increased design flexibility.
Implementation Method 1
the reactive RFID strap can induce a current to flow in the metallic object
Implementation Method 2
induce a far field RFID antenna response by coupling with electric or magnetic fields
Implementation Method 3
forming an antenna on the surface of the three dimensional object by depositing a conductive material onto the object
Data Source
AI summary
RFID tags for use on a non-planar surface of an object, packaging around the object, or a metallic object, and methods of making and using thereof are disclosed. For 3D objects, the method comprises forming an antenna on the non-planar surface and positioning a reactive RFID strap in proximity to the antenna. The reactive RFID strap can induce a far field antenna response, wherein coupling can occur via electric fields, magnetic fields, or both. For metallic objects, an antenna is formed on the surface of a substrate. An RFID chip or strap is attached and the clip component cut. The clip components can be modified to help secure the clip component to the metallic item by adding surface deflections, adhesive fixing points, or tabs designed to engage with an existing hole or opening in the metallic item package or object.