Method for implementing thermodynamic temperature measurement based on color temperature meter

Abstract

The thermodynamic temperature radiation measurement method based on color temperature meter comprises: based on dual-parameter emissivity function in special wave band, creating a closed radiation pyrometry equation to ensure the measurement without emissivity data and scaled thermodynamic temperature; with color temperature meter and former equation, selecting color information as the study cross-point to build the mathematical correlation database; using the database and meter for measurement. This invention overcomes defects in prior art, and expands meter application range.

Description

technical field [0001] The invention relates to a method for realizing thermodynamic temperature radiation measurement of a high-temperature object based on a color temperature meter. Background technique [0002] The abundant optical radiation in nature stimulates the human eye and forms color information in the brain. Color temperature and correlated color temperature are the basic color representation concepts in chromaticity, and they are more general color-related physical quantities than the chromaticity coordinates of colors. In the field of color science, color temperature measurement has always been an important test item. For example, in the light source production industry, there are high requirements for accurate measurement of color temperature, but the test methods are relatively expensive and complicated. Therefore, for different needs, color temperature meters of many brands and with different performances have been widely used. They have many advantages suc...

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Problems solved by technology

[0004] Since the establishment of Planck's law in 1900, the radiation measurement method of thermodynamic temperature has been the mainstream research hotspot of temperature measurement. The difficulty lies in that the emissivity is not only a function of temperature, wavelength and surface state, but also a function of the direction of measurement; In addition, the measurement signal is also affected by ③ ranging

For ①, the current commercial radiation temperature measuring instruments (such as thermal imagers, etc.) all adopt the emissivity correction scheme, and the accurate temperature can be obtained by correcting the emissivity data. It is the mainstream of application, but the limitation of inaccurate temperature measurement hinders its further development in the field of scientific research

Since the late 1980s, researchers have been trying to establish various emissivity models about temperature and wavelength, but the proposal of a universal emissivity model has always been a difficult point in this field, and it has not been perfected so far. to be resolved; although the surface state cannot be described, it is "frozen" during the measurement, so it does not affect the measurement

[0005] Therefore, the above research status shows that: 1) For special objects such as black body or gray body, while measuring the color temperature, the color temperature meter also represents the thermodynamic temperature of the object through the color temperature; and for the actual object, the radiation measurement of the thermodynamic temperature is carried out by using the color temperature meter It only stays at the stage of appearance, and has not been realized in theory and application, and has never attracted the attention of research

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