Tire RFID Cover Layer Composition for Signal Recognition Stability
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Solution Overview
Problem
Existing tires lack effective radio wave recognition properties and durability, particularly when incorporating RFID tags, leading to reduced signal transmission and recognition efficiency.
Innovation Solution
A tire design with an electromagnetic tag module featuring a cover layer composed of base rubber, reinforcing filler (such as carbon black or boron nitride), and insulating filler (like silica, titanium dioxide, or calcium carbonate) with a specific resistance of 107 Ω·m or more, enhancing signal transmission and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If an electromagnetic tag is incorporated into the tire body, then radio wave recognition properties are improved, but signal transmission efficiency deteriorates due to interference from conductive materials
Solution Approach 1:
A cover layer is introduced as an intermediary between the electromagnetic tag and the tire body. This cover layer is formed of rubber composition containing insulating fillers (such as silica, titanium dioxide, or aluminum oxide) at concentrations of 5 wt% or more, which mediate the interaction between the tag and surrounding materials to reduce electromagnetic interference while maintaining signal transmission
Solution Approach 2:
The electrical conductivity parameter of the cover layer is controlled by adjusting the concentration of insulating fillers in the rubber composition. By changing the filler concentration to 5 wt% or more, the electrical conductivity is reduced to minimize signal interference, while the rubber matrix maintains flexibility and adhesion
2Ease of manufacture
If the cover layer uses conventional rubber composition, then ease of manufacture is improved, but durability and impact resistance deteriorate
Solution Approach 1:
The cover layer uses a composite rubber composition combining organic rubber matrix with inorganic insulating fillers. This composite structure provides both the flexibility and ease of manufacturing characteristic of rubber while adding the durability, impact resistance, and electromagnetic shielding properties of the filler materials
Solution Approach 2:
The rubber composition is designed with locally optimized properties: the rubber matrix provides flexibility and adhesion for ease of manufacture, while concentrated insulating fillers (5 wt% or more) provide localized electromagnetic shielding and enhanced mechanical strength where needed around the electromagnetic tag
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 improves signal recognition distance and efficiency while providing mechanical durability and impact resistance for the RFID tag, ensuring stable radio wave communication and effective tire management.
Implementation Method 1
the cover layer includes a base rubber, a reinforcing filler, and an insulating filler, and has a specific resistance of 10^7 Ω·m or more
Data Source
AI summary
A tire mounted on a transportation means is proposed. The tire may include a tire body including a tread region that faces the surface of the road during at least the driving of the transportation means. The tire may also include an electromagnetic tag module disposed in the tire body and configured to transmit or receive one or more signals. The electromagnetic tag module may include an electromagnetic tag, and a cover layer that is disposed on an inner side surface of the electromagnetic tag and separate from the tire body. The cover layer may include a base rubber, a reinforcing filler, and an insulating filler, has a specific resistance of 107 Ω·m or more, and may improve the durability and radio wave recognition distance of the electromagnetic tag.