Surface State Measurement Using Multi-Reflection Electromagnetic Waves
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Solution Overview
Problem
Conventional measurement techniques struggle to accurately measure the state of a surface, particularly the adhesive state between layers in a multi-layered sample, due to limitations in detecting surface vibrations and contact states.
Innovation Solution
A measurement method and system that involves causing an electromagnetic wave to be incident and reflected multiple times between opposing surfaces, analyzing the frequency components of the modulation signal, and calculating the position, displacement, or speed of the surfaces based on these components, even when one or both surfaces are moving or vibrating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional measurement techniques are used to measure surface state, then the measurement process is simple, but the measurement precision is insufficient particularly for adhesive states and surface vibrations
Solution Approach 1:
The patent applies mechanical vibration by causing the electromagnetic wave to reflect multiple times between opposing surfaces. This multi-reflection process enhances the interaction between the electromagnetic wave and the surface, thereby improving measurement precision for adhesive states and surface vibrations without requiring complex additional measurement devices
Solution Approach 2:
The patent replaces mechanical measurement systems with an electromagnetic wave-based system. By using electromagnetic waves to detect surface states, the patent achieves non-contact measurement with high precision for adhesive states and vibrations, eliminating the need for complex mechanical contact-based measurement devices
2Measurement precision
If electromagnetic waves are reflected multiple times between surfaces, then measurement precision for surface state improves, but the complexity of the measurement system increases
Solution Approach 1:
The patent employs feedback by analyzing the frequency components of the modulated electromagnetic wave signal returned from the multiple reflections. This feedback mechanism allows the system to extract precise information about surface states, adhesive conditions, and vibrations from the reflected wave characteristics
Solution Approach 2:
The patent utilizes parameter changes by detecting variations in the frequency components of the electromagnetic wave after multiple reflections. These frequency parameter changes encode information about surface position, adhesive state, and vibration characteristics, enabling precise measurement through spectral analysis
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 accurate measurement of surface states, including adhesive states and surface vibrations, with high precision and sensitivity, allowing for the determination of contact states and the presence of gaps between layers.
Implementation Method 1
causing an electromagnetic wave to be incident so as to be reflected a plurality of times between a first surface and a second surface that oppose each other
Implementation Method 2
analyzing frequency components of a modulation signal of the received electromagnetic wave; and calculating at least one of position, displacement, and speed for at least one of the first surface and the second surface based on the frequency components
Data Source
AI summary
The present measurement method includes causing an electromagnetic wave to be incident so as to be reflected a plurality of times between a first surface and a second surface that oppose each other, receiving the electromagnetic wave reflected a plurality of times, analyzing frequency components of a modulation signal of the received electromagnetic wave, and calculating at least one of position, displacement, and speed for at least one of the first surface and the second surface based on the frequency components. At least one of the first surface and the second surface is moving. A state of a surface to be measured is thus measured accurately.