Calibration, Measurement and Error Analysis of Optical Temperature Measurement via Laser Induced Fluorescence

• Published in: 2007 IEEE Instrumentation & Measurement Technology Conference IMTC 2007 pp. 1 - 6
• Main Authors: Harker, M., O'Leary, P., Kharicha, M.S., Eck, S.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-05-2007
• Subjects: Calibration; Error analysis; Error Propagation; Fluorescence; Laser Induced Fluorescence; Mathematical Modeling; Measurement Accuracy; Optical attenuators; Optical devices; Optical filters; Optical propagation; Optical Temperature Measurement; Pixel; Temperature measurement; Wavelength measurement
• ISBN: 1424405882; 9781424405886
• ISSN: 1091-5281
• DOI: 10.1109/IMTC.2007.379008

This paper describes a measurement device for optical temperature measurement. The temperature measurement is based on light induced fluorescence, and hence the device is partly physical and partly theoretical in nature. Rather that estimating a single calibration curve for the measurement, as is the norm with optical measurement, we perform the calibration pixel-wise, which accounts for systematic non-uniformity over the images and measurement cell. With this approach, the measurement is less susceptible to gross outliers. A measurement device can hardly be called such, if the measurement is not accompanied by a measure of its accuracy. We therefore undertake the error propagation throughout the theoretical portion of the measurement device, which leads to a measure of the accuracy of the optical temperature measurement. The analysis not only gives insight into the measurement process, but facilitates the amelioration of the experimental apparatus.