Thermal measuring and testing – Temperature measurement – In spaced noncontact relationship to specimen
Patent
1994-10-26
1998-06-30
Gutierrez, Diego F.F.
Thermal measuring and testing
Temperature measurement
In spaced noncontact relationship to specimen
374121, 374 9, 374 45, 364557, 364556, G01J 500, G01J 508
Patent
active
057723230
ABSTRACT:
The present invention relates to a totally novel device and process useful for the measurement of the temperature of a radiating body. More particularly, the present invention relates to a device that enhances the resolution and repeatability of the measured temperature of the radiating body by fitting a mathematical correlation to the emitted radiation spectra, generating calculated radiation intensities at specified wavelengths using the mathematical correlation, and then generating a suite of individual two-wavelength temperature values, which can be statistically evaluated and averaged for a final, measured temperature. In one embodiment, the device consists of an optical input system which receives a portion of the emitted radiation of a radiating body; a wavelength dispersion device which separates the emitted radiation according to wavelength; a radiation transducer which senses the separated radiation and provides an output corresponding to the respective wavelengths of the emitted radiation; means for generating a mathematical function to correlate the output of the radiation transducer to the corresponding wavelengths of incident radiation; and a means for generating a temperature value utilizing a form of the Planck Radiation Equation. Additionally, the present invention relates to the technique utilized to enhance the resolution and repeatability of the measured temperature.
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