Experimental verification of a multiband system for non-contact temperature measurements

Abstract

Recent studies about non-contact temperature measurement concern passive multiband radiometric systems. These systems give a potential possibility of accurate temperature measurements in case of unknown and wavelength depended emissivity of the examined object. Modeling of such systems, what is usually the first stage of system designing, requires acceptation of several simplifications and approximations. In this paper an experimental verification of modeling results is performed. Based on developed experimental setup some tests are performed. It allows us to determine some systems parameters and whole system estimation.

<title>Verification of multiband system for noncontact emissivity measurements</title>

“…For experimental verification of the emissivity measurement system accuracy a measurement setup have been developed and constructed [7]. In system designing phase -sensitive detection was applied that allows to reduce the influence of background radiation and electronic noises.…”

“…During last decade an increasing interest in passive multiband systems for temperature and emissivity measurement was noted [5][6][7]. The method is based on the assumption, that object emissivity can be well approximated by function of wavelength of m parameters where rn-i must be lower or equal to number of system spectral bands.…”