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

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...

AI Technical Summary

Problems solved by technology

At present, the commonly used infrared thermometer is single-point temperature measurement. Although the infrared thermal imager can capture the temperature distribution of the object in the whole field, its resolution is far lower than that of ordinary cameras, and it is expensive.

Images