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Temperature distortion measurement system and method based on wide-angle lens and image distortion correction

An image distortion correction and distortion correction technology, which is applied in the field of material experiments, can solve problems such as limited image areas, achieve the effects of reducing distortion errors, eliminating interference, and expanding the range of image acquisition

Active Publication Date: 2019-11-29
TSINGHUA UNIV
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Problems solved by technology

[0003] In view of this, this disclosure proposes a temperature deformation measurement system and method based on wide-angle lens and image distortion correction to solve the problem of limited image area obtained by high-temperature wind tunnel observation means

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Embodiment Construction

[0051] 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.

[0052] 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.

[0053] 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 disclosure relates to a temperature distortion measurement system and method based on a wide-angle lens and image distortion correction, and the system comprises the following parts of a closed experiment cabin provided with a high temperature-resistant observation window and internally fixed with a test piece; an illumination light source for illuminating the surface of the test piece; a wide-angle camera for acquiring an image of the surface of the test piece; a heating device for heating the test piece; a temperature measuring device for measuring single-point temperature of the surfaceof the test piece; and a control terminal for obtaining a deformation field of the surface of the test piece based on the image of the surface of the test piece after distortion correction, and obtaining a temperature field on the surface of the test piece according to the single-point temperature of the surface of the test piece and the image of the surface of the test piece after distortion correction. The wide-angle camera can greatly expand the image acquisition range and obtain more effective experimental data. The distortion correction can greatly reduce the image distortion error and obtain more accurate information of the deformation field and temperature field.

Description

technical field [0001] The present disclosure relates to the technical field of material experiments, and in particular to a temperature deformation measurement system and method based on a wide-angle lens and image distortion correction. Background technique [0002] In the field of aerospace, the complex service environment of high temperature and high-speed flow field has brought great challenges to the thermal protection of aerospace. Before service, it is generally necessary to test and evaluate the material / structure performance of the thermal protection system by means of ground assessment. Existing high-temperature wind tunnels The images acquired by cameras in existing high-temperature wind tunnels are limited by the observation window and observation position, resulting in The area collected is very limited, and the amount of experimental data is small. Contents of the invention [0003] In view of this, the present disclosure proposes a temperature deformation ...

Claims

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Application Information

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IPC IPC(8): G01M9/06G01B11/16
CPCG01B11/16G01M9/06
Inventor 冯雪张金松岳孟坤唐云龙
Owner TSINGHUA UNIV
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