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Method for measuring surface temperature of metal material based on colorimetric temperature measurement

A surface temperature and metal material technology, applied in the field of infrared radiation temperature measurement, can solve problems such as different emissivity, achieve accurate, high-precision measurement results, and reduce errors

Active Publication Date: 2021-07-27
HEFEI UNIV OF TECH
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Problems solved by technology

Although scholars have done a lot of research on the emissivity of metals, the industrial production environment is complex and diverse. Even the same material has different emissivity in different environments.

Method used

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  • Method for measuring surface temperature of metal material based on colorimetric temperature measurement
  • Method for measuring surface temperature of metal material based on colorimetric temperature measurement
  • Method for measuring surface temperature of metal material based on colorimetric temperature measurement

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Embodiment 1

[0076] (1) if figure 1 As shown, the beam splitter is composed of a beam splitter, a plane mirror and two single-wavelength filters. The beam splitter reflects part of the infrared radiation entering the beam splitter and transmits part of it. The transmitted radiation passes through the central wavelength λ 1 =10200nm single-wavelength filter; the reflected radiation first passes through the plane mirror to change the direction of propagation, and then passes through the center wavelength λ 2 =10800nm ​​single wavelength filter. Connect the spectrometer with the infrared thermal imaging camera to form a dual-wave colorimetric infrared thermal imaging camera. The radiation inside the vacuum high-temperature furnace can enter the dual-wave colorimetric infrared thermal imaging camera through the infrared window.

[0077] (2) Use a Gigabit network cable to connect the infrared thermal imager to the industrial computer. The industrial computer is equipped with the control softw...

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PUM

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Abstract

The invention discloses a method for measuring the surface temperature of a metal material based on colorimetric temperature measurement, and relates to the technical field of infrared radiation temperature measurement. A light splitting device composed of a spectroscope and a single-wavelength optical filter is used, infrared gray level images of two wavelengths can be measured on the same thermal infrared imager at the same time, errors caused by double optical paths and double cameras during calibration and measurement are reduced, so that the measurement result is more accurate. According to the invention, in the actual temperature measurement of the metal target, the radiation values of two wavelengths are measured by using the same thermal infrared imager, the measured image is transmitted to the industrial personal computer in real time, the gray value of the image is read by the industrial personal computer, and the surface temperature of the target can be calculated in real time by using the method disclosed by the invention.

Description

Technical field: [0001] The invention relates to the technical field of infrared radiation temperature measurement, in particular to a method for measuring the surface temperature of metal materials based on colorimetric temperature measurement. Background technique: [0002] In industrial production, there are more and more scenarios for processing metals by using vacuum high-temperature furnaces to create a vacuum and high-temperature environment or a high-temperature environment filled with inert gas. For example, vacuum brazing technology is widely used in petrochemical, marine machinery and weaponry and other fields. Vacuum brazing refers to using a material with a lower melting point than the metal base material as the solder under vacuum conditions, heating the solder to a temperature higher than its own melting point and lower than the melting point of the metal base material in a vacuum high-temperature environment, and using liquid brazing The material wets the ba...

Claims

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Application Information

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IPC IPC(8): G01J5/60
CPCG01J5/60
Inventor 舒双宝王子艺杨子强张育中郎贤礼
Owner HEFEI UNIV OF TECH
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