Optical infrared radiation high-temperature calibrating device and self-calibrating method thereof

Abstract

The invention provides an optical infrared radiation high-temperature calibrating device and a self-calibrating method. The device comprises a light source, parallel light tubes, a standard infrared thermometer and a power regulator, wherein the light source is connected with the power regulator through an electric wire; the power regulator is used for regulating the intensity of the light source; the light source is arranged on the central axes of the parallel light tubes; light rays are converted into two beams of light rays which are vertical to an optical axis direction and parallel to the optical axis direction after passing through light splitting sheets of the parallel light tubes; and the two beams of light rays are received by the standard infrared thermometer and a thermometer to be calibrated respectively. Compared with the conventional blackbody furnace calibrating equipment for measuring temperature by adopting a thermocouple, the optical infrared radiation high-temperature calibrating device provided by the invention has the advantages of high radiation temperature regulating speed and high security. Light of specific wavelengths is screened through a filter, so thatan accurate temperature sensing reference is provided for thermometers of different wave bands, the cost is saved for temperature calibrating work, a high-temperature temperature standard above 2,000DEG C can be realized, the temperature regulating speed is high, the calibration efficiency is high, and the cost is low.

Description

technical field [0001] The invention belongs to the field of non-contact radiation temperature measurement, in particular to an optical infrared radiation high-temperature calibration device and a self-calibration method thereof. Background technique [0002] The basic principle of infrared temperature measurement is that when the temperature of an object is higher than absolute zero, due to the existence of its internal thermal motion, it will continuously radiate electromagnetic waves to the surroundings, including infrared rays with a band of 0.75-100 μm, which are sampled by infrared detectors The peak wavelength of its infrared radiation can measure the temperature of the measured object. [0003] At present, the calibration and calibration of infrared thermometers mainly use a blackbody furnace as a reference facility, a metal bullseye is used to simulate a blackbody, a thermocouple is used as a temperature calibration, and the blackbody furnace is heated to a set temp...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of slow calibration speed and low efficiency in the existing non-contact measurement calibration technology, and propose an o...

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