Device and method for synchronously measuring three-dimensional deformation and temperature with single camera under high temperature environment

A technology of three-dimensional deformation and high-temperature environment, which is applied in the direction of measuring devices, radiation pyrometry, and optical devices, etc., can solve the problems of low resolution and high price, and achieve the effect of convenient operation and simple design

Inactive Publication Date: 2017-02-22
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used infrared thermometer is single-point temperature measurement. Although the infrared thermal imager can capture

Method used

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  • Device and method for synchronously measuring three-dimensional deformation and temperature with single camera under high temperature environment
  • Device and method for synchronously measuring three-dimensional deformation and temperature with single camera under high temperature environment
  • Device and method for synchronously measuring three-dimensional deformation and temperature with single camera under high temperature environment

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Embodiment 1

[0029] Such as figure 1 As shown, the single-camera three-dimensional deformation and temperature synchronous measurement device in the high-temperature environment of this embodiment includes: an illumination source 2, a color CCD camera 4, a filter, a single-camera binocular imaging system 3, an infrared thermometer 5, and a computer 6; Wherein, the illumination light source 1 emits the illumination light in the blue light band and irradiates the surface of the measured object 1; a filter is arranged in front of the lens of the color CCD camera, the transmission band of the filter is the blue light band, and the transmission center band corresponds to the band of the illumination source; The color CCD camera 4 and the infrared thermometer 5 are connected through a synchronization line and connected to the computer 6; the infrared thermometer 5 is aimed at the surface of the object to be measured; the color CCD camera 4 takes pictures of the object to be measured through the s...

Embodiment 2

[0048] In this embodiment, the single-camera binocular imaging system 3 uses mirrors. Such as figure 2 As shown, the color CCD camera 4 shoots the surface of the measured object through the reflector, which is equivalent to two virtual cameras 4a and 4b shooting the surface of the measured object from different angles, thereby realizing the binocular vision effect.

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Abstract

The invention discloses a device and a method for synchronously measuring three-dimensional deformation and temperature with a single camera under a high temperature environment. The surface of a measured object is shot by adopting a color CCD (Charge Coupled Device) camera via a single-camera binocular imaging system, equivalently, the surface of the measured object is shot is shot by two virtual cameras from different angles, so that a binocular visual effect is achieved; a computer extracts blue light information, and three-dimensional shape and three-dimensional deformation of the surface of the measured object are calculated in real time by adopting a three-dimensional digital image related algorithm; meanwhile, the full-field temperature of the surface of the measured object is calculated by using the red light information and green light information of the color CCD camera and using a colorimetric method based on a reference temperature calibrated by an infrared temperature measurer. The three-dimensional deformation and full-field temperature of the object under the high temperature environment can be synchronously measured by using a single camera; the whole device is simple in design and convenient to operate, and is applicable to synchronous real-time measurement of three-dimensional deformation and full-field temperature of the object under the high temperature environment in engineering field.

Description

technical field [0001] The invention relates to a high-temperature material measurement technology, in particular to a single-camera three-dimensional deformation and temperature synchronous measurement device and method in a high-temperature environment. Background technique [0002] Object deformation measurement and temperature measurement in high temperature environment are important contents in the study of material properties, which are of great significance in aerospace, nuclear energy, automobile and other fields. At present, the existing high-temperature deformation measurement methods are mainly divided into contact type and non-contact type. Among them, the non-contact deformation measurement method represented by the optical measurement method has been widely studied due to its non-contact advantages and the ability to realize real-time deformation measurement in the whole field. and apply. The traditional three-dimensional digital correlation method measurement...

Claims

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Application Information

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IPC IPC(8): G01B11/16G01J5/00G01J5/08
CPCG01B11/16G01J5/00G01J5/0896
Inventor 冯雪王显张长兴屈哲方旭飞苏红宏
Owner TSINGHUA UNIV
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