Unlock instant, AI-driven research and patent intelligence for your innovation.

Ultraviolet dual-wavelength radiation temperature measurement method

A radiation temperature measurement, dual-wavelength technology, applied in the field of ultraviolet dual-wavelength radiation temperature measurement, can solve the problems of pollution radiation thermometer observation window, emissivity difference, affecting the reliability of temperature measurement, etc., to achieve the effect of insensitivity to pollution

Inactive Publication Date: 2020-11-13
NAT INST OF METROLOGY CHINA
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of cutting-edge technology, the temperature of the measured object is significantly increased, and the relationship between the spectral radiation characteristics of new materials and temperature is complicated. Even if the temperature is the same, there may be obvious differences in the emissivity corresponding to different spectra.
In addition, atoms on the surface of objects evaporate at high temperatures, polluting the observation window of the radiation thermometer, seriously affecting the reliability of temperature measurement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ultraviolet dual-wavelength radiation temperature measurement method
  • Ultraviolet dual-wavelength radiation temperature measurement method
  • Ultraviolet dual-wavelength radiation temperature measurement method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] In order to facilitate the understanding of the present invention, the embodiments of the present invention are described below, and those skilled in the art should understand that the following description is only for the convenience of explaining the present invention, not as a specific limitation on its scope.

[0016] According to Planck's radiation theory, for a black body with a surface temperature T, the spectral radiance is a function of temperature and wavelength:

[0017]

[0018] Among them, c 1 Indicates the first emissivity coefficient, unit: W m 2 ; c 2 Represents the second radiation constant, unit: m K; T represents the real temperature of the black body surface (ie thermodynamic temperature), unit: K; L 0λ Indicates the blackbody spectral radiance at wavelength λ, unit: Wm -2 sr -1 ; λ represents the wavelength of black body radiation, unit: m.

[0019] In the vicinity of ultraviolet-visible light, λT2 , the above formula can be expressed by the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an ultraviolet dual-wavelength radiation temperature measurement method, under the condition of unknown spectral emissivity of an object, dual-wavelength radiation temperaturemeasurement is applied, the dual wavelength is in the range of 200 nm to 400 nm, the surface real temperature of a high-temperature object is approximately measured, and the influence of pollution ofan observation window on measurement is almost eliminated.

Description

technical field [0001] The invention belongs to the field of temperature measurement, and in particular relates to measuring the real temperature of the surface of an object under the conditions of high temperature and high-energy particle evaporation (sputtering) environment and unknown surface emissivity, and more particularly relates to an ultraviolet dual-wavelength radiation Temperature measurement method. Background technique [0002] The radiation thermometer detects the light radiation energy (or luminous flux) on the surface of the measured object, and obtains the temperature of the surface of the measured object according to the light radiation theory on the surface of the object. The theory of light radiation on the surface of an object is based on the assumption that the surface is an ideal black body. For actual objects, the surface properties deviate from the black body assumption. Therefore, people introduce the spectral emissivity of the object to correct the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01J5/00
CPCG01J5/00
Inventor 张金涛董伟卢小丰
Owner NAT INST OF METROLOGY CHINA