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Temperature measurement method and system

A technology of temperature field and reference temperature, which is applied in the field of metrology, can solve the problem that image acquisition and temperature measurement cannot be taken into account, and achieve the effect of low-cost and high-precision temperature field measurement

Active Publication Date: 2019-09-20
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, image acquisition and temperature measurement in different areas are often not compatible

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  • Temperature measurement method and system

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Embodiment Construction

[0014] Various exemplary embodiments, features, and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numbers in the figures indicate functionally identical or similar elements. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

[0015] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

[0016] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific implementation manners. It will be understood by those skilled in the art that the present disclosure may be practiced without some of the specific details. In some instances, methods, means, componen...

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Abstract

The present disclosure relates to a temperature measurement method and system, which is characterized in that it includes: acquiring images of the surface of the measured object under multiple light intensity attenuation rates, each image corresponding to a corresponding light intensity attenuation rate; acquiring each During the image, measure the single-point temperature of the area of ​​the object under test that meets the image definition requirements, as the reference temperature corresponding to the image; perform the following processing on the image: according to the grayscale value and grayscale of each image The threshold value determines the target area in the image; according to the reference temperature corresponding to each image, the temperature field of the target area of ​​the image is determined by colorimetry; according to the temperature field of the target area of ​​each image, the surface of the measured object is determined temperature field. The temperature measurement method and system realize the acquisition of the surface temperature field of an object under the condition of high brightness gradient with low cost and high efficiency.

Description

technical field [0001] The present disclosure relates to the field of measurement, and in particular to a temperature measurement method and system. Background technique [0002] During the service process of the aircraft, its surface is subjected to aerodynamic heat, and the heat accumulation on the surfaces of the nose cone and flange of the aircraft can reach extremely high temperatures. Before official service, it is often necessary to conduct a high-temperature assessment on the ground for the above-mentioned hot-end components. At present, the main method for evaluating the high temperature on the ground of the aircraft's hot end structure and components is the high temperature wind tunnel. In the assessment process, the component surface temperature field is an important parameter. On the one hand, a large number of material properties are temperature-dependent, such as material elastic modulus and strength; on the other hand, when studying material deformation, the...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J5/00
CPCG01J5/0003G01J2005/0077G01J5/485
Inventor 冯雪岳孟坤屈哲朱相宇方旭飞
Owner TSINGHUA UNIV