Multi-spectral radiation temperature measuring device and method of use

Abstract

The invention discloses a multi-spectral radiation temperature measuring device and a use method thereof, wherein the device includes: a multi-spectral radiation acquisition module and a multi-spectral temperature field reconstruction module, and the multi-spectral radiation acquisition module includes a control unit, a spectroscopic unit, and an infrared thermal imager , the control unit includes a motor and a frequency meter, which is used to control the motor speed according to the readings of the frequency meter, and synchronizes with the shooting rate of the infrared thermal imager; Make the measured target and the modulation disc move relatively to cut the image of the measured target, and then select the filter corresponding to the wavelength according to the preset detection band to transmit the beams of the measured target at different wavelengths; the infrared thermal imager is used for The transmitted light beam is converted into a digital image sequence; another module is used to process and analyze the digital image sequence to obtain the true temperature field of the measured target. The device is aimed at the actual demand of laser heating temperature measurement, and solves the problem that the existing temperature measurement device cannot measure the true temperature field.

Description

technical field [0001] The invention relates to the technical field of radiation temperature measurement devices, in particular to a multispectral radiation temperature measurement device and a method of using the same. Background technique [0002] In nature, all objects above absolute zero are emitting radiant energy, with wavelengths between 0.76μm-1000μm called infrared light waves. Infrared light waves have a high temperature effect. The higher the temperature, the stronger the radiation energy. This is the basic theory of infrared thermal imaging temperature measurement technology. [0003] Infrared thermal imager is a precision instrument that can realize thermal image temperature measurement. As the core equipment of infrared temperature measurement technology, it has been widely used in industrial, military, aerospace and civil fields. In 2010, East China University of Science and Technology, Duan Jiyuan and others developed a set of non-contact temperature measure...

AI Technical Summary

Problems solved by technology

At present, the radiation temperature measurement devices based on infrared thermal imaging cameras used by people measure the brightness temperature of the measured object instead of the real temperature. If you want to obtain the real temperature of the measured object, you must know the emissivity of the measured object , but the emissivity parameters of most of the measured objects are unknown, so it is impossible to obtain the true temperature of the measured object according to the emissivity

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