RGB Sensor Oil State Detection Using Brightness and Color Difference
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Solution Overview
Problem
Conventional methods for determining the deterioration and breakage states of machine oil and machines are inaccurate and unable to assess the breakage state effectively, leading to inefficiencies in maintenance and operation.
Innovation Solution
A state determining method that utilizes the combination of brightness and color component calculation values from light detected by a light-receiving element to assess the deterioration and breakage states of machine oil and machines, reducing the influence of individual differences and improving determination accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods use single color component or simple ratio for determination, then the device complexity is low, but the measurement precision of breakage state is insufficient
Solution Approach 1:
The patent transitions from single-color or simple ratio measurements to a three-dimensional color space analysis using R, G, and B components. By calculating both brightness (Y) and color components (u, v) from the RGB values, the system creates a multi-dimensional determination space that significantly improves breakage state detection accuracy while maintaining reasonable computational complexity.
Solution Approach 2:
The patent transforms the raw RGB color data into derived parameters including brightness (Y = 0.299R + 0.587G + 0.114B) and color components (u, v) that better represent the physical state of the machine. This parameter transformation enables more accurate detection of breakage states by focusing on specific characteristics of color change rather than raw sensor values.
2Adaptability or versatility
If conventional methods determine only oil deterioration state, then the measurement scope is limited, but the device complexity remains low
Solution Approach 1:
The patent creates a universal determination system that can assess multiple states (oil deterioration, machine wear, and breakage) using the same color detection apparatus and processing methodology. By establishing comprehensive determination criteria that cover different failure modes, the system achieves multi-functionality without requiring separate detection devices for each state.
Solution Approach 2:
The patent divides the determination process into distinct evaluation modules: brightness-based deterioration assessment, color component-based wear assessment, and combined analysis for breakage detection. This segmentation allows the system to handle multiple determination tasks systematically while maintaining clear differentiation between various failure states.
3Measurement precision
If conventional methods use complex multi-parameter analysis, then the measurement precision improves, but the ease of operation decreases
Solution Approach 1:
The patent pre-calculates and stores the determination criteria including threshold values for brightness and color components, as well as the mathematical relationships between RGB values and physical states. This preliminary preparation enables the actual determination process to proceed efficiently by simply comparing measured values against pre-established criteria, reducing operational burden while maintaining high precision.
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 method enhances the accuracy of determining machine breakage states and deterioration states, allowing for timely maintenance and reducing operational burdens, thereby improving machine reliability and efficiency.
Implementation Method 1
one color that is suitable for each kind of oil is selected from among red, green, and blue components of light detected by a light-receiving element, and the deterioration state of the oil is determined based on optical absorbance with respect to the selected one color
Data Source
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AI summary
A state determination method is provided that is capable of determining at least one of the state of degradation of oil in a machine and the state of breakage of the machine with higher accuracy than conventional methods. A state determination method for determining the state of degradation of lubricating oil in a speed reducer and the state of breakage of the speed reducer is characterized by: transmitting white light emitted by a white LED through the lubricating oil, causing an RGB sensor to detect the color of the light transmitted through the lubricating oil by the white LED, and calculating the brightness of the color detected by the RGB sensor (S201); calculating a color component maximum difference that is the difference between a maximum value and a minimum value among the R value, G value, and B value of the color detected by the RGB sensor (S202); and determining the states on the basis of the brightness calculated in S201 and the color component maximum difference calculated in S202 (S203, S207).