Elastomer Aging Detection via Embedded Resonator Frequency Shift
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Solution Overview
Problem
Existing methods for determining the aging state of elastomer products are prone to external disturbance variables, especially when using weak electromagnetic waves, which can lead to inaccurate measurements.
Innovation Solution
A system comprising an elastomeric product with an embedded elastomeric resonator and a metal resonator arranged oppositely, forming a measurement resonator whose reflection coefficient and resonant frequency depend on the permittivity and conductivity of the elastomeric material, allowing for robust determination of the aging state by detecting changes in the resonant frequency of an electromagnetic alternating field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a strong electromagnetic wave is used to penetrate the elastomer product and reach the sensor, then the measurement signal can be obtained, but external disturbance variables have a strong influence on the measurement and determination result
Solution Approach 1:
The patent applies electromagnetic resonance by tuning the resonant frequency of the sensor system to match the frequency of the applied electromagnetic wave. This resonance effect amplifies the interaction between the wave and the sensor, enabling effective measurement signal generation while using lower overall wave intensity, thereby reducing susceptibility to external disturbances.
Solution Approach 2:
The patent changes the frequency parameter of the electromagnetic wave to match the resonant frequency of the sensor system. By operating at this specific frequency, the system achieves maximum signal strength and measurement reliability without requiring high power, thus minimizing the impact of external disturbance variables on the measurement.
2Object-affected harmful factors
If a weak electromagnetic wave is used in practice, then external disturbance variables can be minimized, but the electromagnetic wave cannot effectively penetrate to the sensor in the elastomer product
Solution Approach 1:
The patent utilizes electromagnetic resonance to amplify the weak electromagnetic wave signal at the sensor location. By matching the wave frequency to the resonant frequency of the sensor system, the weak wave effectively penetrates the elastomer product and generates a sufficient measurement signal, maintaining low overall intensity to minimize external disturbances.
Solution Approach 2:
The patent optimizes the frequency parameter of the electromagnetic wave to coincide with the resonant frequency of the sensor system. This parameter adjustment enables weak waves to achieve effective penetration and signal generation without requiring high power, thus maintaining immunity to external disturbances while ensuring reliable measurement signal strength.
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 approach provides a precise and robust method for determining the aging state of elastomer products, minimizing the impact of external disturbances and accurately reflecting changes in permittivity and conductivity due to aging or mechanical stress.
Implementation Method 1
the measuring resonator is designed to be coupled into the alternating field and to change the alternating field in such a way that the alternating field has a resonant frequency that is characterized by the reflection coefficient of the measuring resonator
Implementation Method 2
The transceiver is designed to generate an electromagnetic alternating field. The measuring resonator is designed to be coupled into the alternating field
Implementation Method 3
the reflection coefficient depends on the permittivity of the first elastomer material and on the electrical conductivity of the elastomer resonator
Implementation Method 4
the reflection coefficient depends on the permittivity of the first elastomer material and on the electrical conductivity of the elastomer resonator
Data Source
Figure 1
Figure 2
AI summary
System (2) for determining an aging state of an elastomer product (4), wherein the system (2) comprises: an elastomer product (4) with a first elastomer material (6), a transceiver (10), and an evaluation unit (12) coupled to the transceiver (10), wherein the elastomer product (4) comprises an elastomer resonator (8) and a metal resonator (18) arranged on an outer surface (20) of the elastomer product (4). The metal resonator (18), the elastomer resonator (8) and a part (24) of the first elastomer material (6) arranged between the metal resonator (18) and the elastomer resonator (8) form a measuring resonator (26) which modifies an alternating field (16) generated by transceiver (10) such that the alternating field (16) has a resonance frequency (f2, f3, f4) characterized by the reflection coefficient (s2, s3, s4) of the measuring resonator (26).The transceiver (10) is designed to detect the alternating field (16) and to generate a measurement signal that represents the alternating field (16) and/or the resonance frequency (f2, f3, f4) of the alternating field (16), wherein the evaluation unit (12) is designed to determine an aging state of the elastomer product (4) based on the measurement signal.