Transient imaging type infrared multi-spectrum temperature field measuring device

Abstract

The invention discloses a transient imaging type infrared multi-spectrum temperature field measuring device, and belongs to the technical field of radiation temperature measuring. The device comprisesa front end objective lens set, a field diaphragm, a relay lens set, filter coatings, a lens array and an infrared CCD, and a tested object is adopted as a target. The target is imaged at the field diaphragm through the front end objective lens set and aligned through the relay lens set, and passes through the lens array coated with filter coatings of different wavebands, and imaging is performedat four quadrants of an infrared CCD, and multi-spectrum temperature field measuring is achieved. The device has the advantages that the proper near infrared waveband can be independently selected, the anti-jamming capability is high, and the temperature measuring result is reliable; transient measuring can be performed on the changing temperature field, and the temperature measuring efficiency is high; no multiple CCDs are needed, and the cost is low.

Description

technical field [0001] The invention relates to a transient imaging infrared multispectral temperature field measuring device, which belongs to the technical field of radiation temperature measurement. Background technique [0002] With the continuous update and development of CCD, more and more institutions combine multi-spectral temperature measurement method and CCD imaging technology for the measurement of temperature field. In the existing technical research, there are three ways to realize multispectral temperature field measurement: [0003] One is to use the visible light color CCD, use the response results of the RGB three-color channels, combine the emissivity model or use the colorimetric method to calculate the temperature field (Chinese Science Series G, 34(6):639-647, 2004; China Electrical Engineering Chinese Journal, 20(1):70-72, 2000; Chinese Journal of Instrumentation, 24(6):653-656, 2003). This method has the following disadvantages: the response of the ...

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: the response of the RGB channel is designed based on the spectral tristimulus value of the standard human eye, which is usually fixed and cannot independently select the appropriate three-band spectral response function; the visible light band is easily affected by sunlight, light, etc. The interference of other light sources leads to large deviations in temperature measurement results

The main disadvantage of this method is that multiple CCDs need to be used and the cost is high

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