RFID Tag Encapsulation in Plastic Base Body for Industrial Use
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Solution Overview
Problem
RFID tags used for procedural identification in industrial plants face issues with field strength interference from metal bases, tamper-proof attachment, and durability under harsh conditions, leading to unreliable communication and potential fraudulent logging.
Innovation Solution
A plastic-based RFID sign with embedded mineral particles and a writable RFID chip, where the chip is encapsulated within the injection molded polyamide plastic base body, ensuring tamper-proof and durable operation with improved temperature stability and readability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a metal base body is used for high temperature resistance, then temperature stability is improved, but field strength during radio communication is weakened
Solution Approach 1:
The invention extracts the RFID chip from the metal base body by providing a separate plastic holder that encapsulates the chip. This separation removes the harmful interaction between metal and radio waves while maintaining the metal base's temperature resistance function.
Solution Approach 2:
The plastic holder acts as an intermediary component between the metal base body and the RFID chip. It provides a non-conductive environment for the chip while being attachable to the metal base, thus mediating between the conflicting requirements of temperature resistance and radio communication.
2Ease of operation
If the RFID chip is attached to the surface of the base body, then readability is improved, but tamper-proof attachment is compromised
Solution Approach 1:
The RFID chip is nested inside the plastic holder, which is then attached to the base body. This nested structure protects the chip from tampering while maintaining its functional accessibility for reading through the holder material.
Solution Approach 2:
The plastic holder functions as a protective shell that encases the RFID chip. This shell provides mechanical protection and tamper resistance while being thin enough to allow radio frequency penetration for communication.
3Ease of operation
If the RFID chip is placed behind a through-hole in the base body, then communication is enabled, but field strength is further weakened
Solution Approach 1:
The plastic holder serves as an intermediary that enables communication without the harmful effects of metal. It allows radio waves to pass through effectively while providing structural support and protection for the chip.
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 solution provides reliable, tamper-proof, and durable RFID tags that maintain communication integrity and prevent fraudulent logging, even under harsh industrial conditions, ensuring accurate documentation and maintenance processes.
Implementation Method 1
the metal of the base body negatively affects or weakens the field strength during radio contact with the RFID chip
Implementation Method 2
the base body is made by injection molding a plastic material which contains a plastic and embedded particles made of a mineral material
Data Source
Figure 1~2
AI summary
In the case of a plate for a process label, having a main body that essentially determines the dimensions of the plate, and having an RFID chip, wherein the plate has a label side or front side and an opposite rear side, the invention proposes that the main body consists of a plastics material and contains incorporated particles of a mineral material, such that the main body has temperature stability, ensuring the dimensional stability of the plate, of at least 100°C, wherein the main body, as an injection-moulded component, encloses the RFID chip such that the RFID chip is surrounded on all sides by the material of the main body.