Conductive RFID Antenna Sealing Element for Tamper Evidence
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Solution Overview
Problem
Existing security sealing devices with RFID tags lack effective tamper evidence, as they remain functional even if the support is detached without damaging the wire loop, failing to provide clear evidence of tampering.
Innovation Solution
The antenna is designed to constitute the sealing element, made of a conductive band or isolated conductive wire, which can be adapted in length and applied flexibly, and when separated, breaks the RFID circuit, providing clear evidence of tampering and enhancing reading/writing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the support is detached from the electronic circuit without damaging the wire loop, then the device can be removed from the item, but the tag remains functional and provides no electronic tamper evidence
Solution Approach 1:
The patent merges the antenna function with the sealing element by making the sealing element itself conductive and integral to the RFID circuit. The sealing element forms part of the antenna structure, so that removal or detachment of the sealing element directly breaks the circuit and disables the RFID tag, providing reliable electronic tamper evidence while maintaining ease of removal during normal operation.
2Ease of manufacture
If a fixed-length sealing element is used, then the manufacturing process is simplified, but the device cannot be flexibly applied to items of various sizes
Solution Approach 1:
The patent implements a dynamic sealing element with adjustable length that can be configured during application to match the specific dimensions of the item being sealed. The sealing element can be cut or adjusted to the required length, allowing the same standardized component to adapt to various item sizes while maintaining ease of manufacture through modular design.
3Adaptability or versatility
If a small-diameter sealing element is used, then the device can seal very small items, but the mechanical strength of the sealing may be insufficient
Solution Approach 1:
The patent employs composite construction for the sealing element, combining conductive material with mechanically strong materials. The sealing element can consist of a conductive core providing RFID functionality surrounded by or reinforced with high-strength material, enabling small-diameter sealing elements to seal very small items while maintaining sufficient mechanical strength through the composite structure.
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
This design provides robust tamper evidence and improved RFID performance by ensuring the sealing element cannot be reconnected without visible proof, and allows for flexible application on various items, enhancing security and identification.
Implementation Method 1
an RFID tag comprising an RFID circuit and an antenna, wherein the antenna comprises a conductive path, which is interrupted on two points by two connectors, wherein one end of the conductive sealing element is connected to the second connecting point
Data Source
AI summary
The invention concerns a security sealing device including a sealing element, an integrated circuit and an antenna connected to the integrated circuit, the integrated circuit and the antenna forming a RFID circuit. The security sealing device is characterized by the fact that said sealing element is conductive and is forming a part of said antenna.