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Emissivity compensated spectral pyrometry-algorithm and sensitivity analysis

Petter Hagqvist ; Fredrik Sikström ; Anna-Karin Christiansson ; Bengt Lennartson (Institutionen för signaler och system, Automation)
Measurement Science & Technology (0957-0233). Vol. 25 (2014), 2,
[Artikel, refereegranskad vetenskaplig]

In order to solve the problem of non-contact temperature measurements on an object with varying emissivity, a new method is herein described and evaluated. The method uses spectral radiance measurements and converts them to temperature readings. It proves to be resilient towards changes in spectral emissivity and tolerates noisy spectral measurements. It is based on an assumption of smooth changes in emissivity and uses historical values of spectral emissivity and temperature for estimating current spectral emissivity. The algorithm, its constituent steps and accompanying parameters are described and discussed. A thorough sensitivity analysis of the method is carried out through simulations. No rigorous instrument calibration is needed for the presented method and it is therefore industrially tractable.

Nyckelord: temperature, emissivity, varying emissivity, spectrophotometer, multispectral pyrometry, DIFFERENTIATION, EINIER J, 1972, ANALYTICAL CHEMISTRY, V44, P1906

Denna post skapades 2014-04-16. Senast ändrad 2015-01-27.
CPL Pubid: 196833


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Institutioner (Chalmers)

Institutionen för signaler och system, Automation (2005-2017)


Elektroteknik och elektronik

Chalmers infrastruktur