Radiation temperature measurement distance determining method based on equivalent blackbody section

Abstract

The invention relates a radiation temperature measurement distance determining method, and belongs to the technical field of radiation temperature measurement. According to the method, the position of an equivalent blackbody section of a blackbody radiation source is calculated based on the axial temperature field of the blackbody radiation source and according to the shape parameters of a blackbody cavity and the material emissivity of the wall of the blackbody cavity, and the radiation temperature measurement distance is determined with the position of the section as a benchmark of temperature measurement distance and based on the field of view of a radiation thermometer. Compared with a traditional method taking the bottom of a blackbody radiation source as a temperature measurement distance benchmark, for verification and calibration of a radiation thermometer with a large field-of-view angle, temperature measurement distance determination using the method of the invention overcomes the problem that the cavity length of the blackbody radiation source is greater than the measured distance to a certain extent. Compared with a method taking the cavity mouth of a blackbody radiation source as a temperature measurement distance benchmark, the temperature measurement result is more stable and reliable and is less susceptible to the influence of a variety of variables such as the uniformity of the temperature field of a blackbody radiation source.

Description

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AI Technical Summary

Benefits of technology

The present inventor has found it possible to measure temperatures accurately over an entire area without having any background noise or interference from other sources like heating elements inside their device's housing. This makes them ideal for use during testing purposes where accurate results are needed.

Problems solved by technology

This patented technical solution involves determining an accurate measure of heat from radioactive materials (radiators). To achieve this, they have been placed within specific areas called dark bodies or shadows due to their own thermal properties such as absorption coefficients. By measuring these darkness regions at different distances away from them, we can accurately calculate how much energy was emitted during each process.

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