Title :
Multi-wavelength imaging pyrometer for noncontact temperature sensing
Author :
Kaplinsky, Michael B. ; Kosonocky, Walter F. ; McCaffrey, Nathaniel J. ; Li, Jun ; Hou, Edwin S H ; Manikopoulos, Constantine N. ; Ravindra, N.M.
Author_Institution :
Electronic Imaging Center, New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
Multi-wavelength imaging pyrometer (M-WIP) is presented for remote sensing of temperature profiles of targets with unknown emissivity. A software package was developed for calibration and real-time M-WIP measurements. An experimental 7-filter line-sensing M-WIP system was implemented with a 320×122-element PtSi IR-CCD imager. The M-WIP system was calibrated against a commercial blackbody source over a temperature range from 450°C to 900°C. The signal processing included background subtraction and compensation for variation of dark current with detected signal and nonlinearity of IR imager response. Initial M-WIP measurements demonstrated real-time temperature resolution ΔT of ±1°C for blackbody target over temperature range from 600°C to 900°C
Keywords :
CCD image sensors; calibration; infrared imaging; pyrometers; remote sensing; spectral methods of temperature measurement; 450 to 900 C; 7-filter line-sensing M-WIP system; IR imager response nonlinearity; PtSi; PtSi IR-CCD imager; background subtraction; blackbody source; blackbody target; calibration; dark current compensation; multi-wavelength imaging pyrometer; noncontact temperature sensing; radiometric model; real-time temperature resolution; remote sensing; signal processing; software package; Calibration; Dark current; Infrared detectors; Remote sensing; Signal processing; Software measurement; Software packages; Temperature distribution; Temperature measurement; Temperature sensors;
Conference_Titel :
Industrial Electronics, 1995. ISIE '95., Proceedings of the IEEE International Symposium on
Conference_Location :
Athens
Print_ISBN :
0-7803-7369-3
DOI :
10.1109/ISIE.1995.496626
