Thermal Analysis Controller Differentiation for Foreign Matter Detection
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Solution Overview
Problem
Current thermal analysis techniques, such as DSC and DTA, face challenges in quantitatively measuring thermal characteristics of foreign matters within a sample due to their minute size and similar composition to the matrix, making it difficult to detect their thermal changes separately.
Innovation Solution
A controller for a thermal analysis apparatus that differentiates the intensity of a response signal to an electromagnetic wave with respect to time and temperature, allowing for the display of derivative values to analyze the thermal characteristics of foreign matters within a matrix, enabling separate analysis of the matrix and foreign matter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermal analysis is performed on a sample containing foreign matter, then thermal behavior of the sample can be measured, but the thermal characteristics of the foreign matter cannot be detected separately due to being buried in the matrix changes
Solution Approach 1:
The patent applies segmentation by dividing the sample into two distinct components: the matrix and the foreign matter. By using image processing to identify and segment the foreign matter region from the matrix, the system can independently analyze thermal characteristics of each component. This allows the thermal changes of the foreign matter to be detected separately even when present in small quantities within the larger matrix sample.
2Measurement precision
If conventional thermal analysis methods are used, then overall sample thermal behavior can be observed, but quantitative measurement of foreign matter thermal characteristics is not possible
Solution Approach 1:
The patent introduces an intermediary element: an imaging device that captures visual information of the sample. This image data serves as a mediator between the thermal analysis system and the foreign matter identification. By processing the image data to identify foreign matter locations and integrating this information with thermal analysis, the system achieves quantitative measurement of foreign matter thermal characteristics without significantly complicating the overall device architecture.
3Measurement precision
If the foreign matter has the same composition as the matrix, then it is difficult to distinguish using conventional analysis, but the patent enables separate identification through image processing
Solution Approach 1:
The patent transitions from a single-dimensional thermal analysis approach to a multi-dimensional approach by incorporating spatial information from image processing. Instead of relying solely on thermal property differences, the system adds a spatial dimension by identifying the location and boundaries of foreign matter in the image. This allows differentiation of foreign matter from the matrix based on positional and morphological characteristics rather than just compositional differences.
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 allows for the reliable and quantitative measurement of thermal characteristics of foreign matters, including their melting points, by differentiating the response signal intensity, thereby overcoming the limitations of existing techniques where foreign matter changes are buried in the matrix's thermal changes.
Implementation Method 1
acquire an intensity of a response signal of a measurement target to an electromagnetic wave with which the measurement target is irradiated
Implementation Method 2
a heating furnace configured to heat the sample
Data Source
AI summary
Provided are a controller for a thermal analysis apparatus, with which thermal characteristics of a measurement target can be grasped, and a thermal analysis apparatus. A controller (51) for a thermal analysis apparatus, which is configured to measure thermal behavior accompanying a temperature change caused by one of heating and cooling of a measurement target (X, Y), is configured to: acquire an intensity of a response signal of the measurement target to an electromagnetic wave with which the measurement target is irradiated with respect to a variable of one of a time and a temperature; differentiate the intensity with respect to the variable; and output a derivative value obtained as a result of the differentiation with respect to one of the temperature and the time, or display the derivative value with respect to one of the temperature and the time on a predetermined display (53).