Title :
Digital signal processing for fiber-optic thermometers
Author :
Fernicola, V. ; Crovini, L.
Author_Institution :
Istituto di Metrologia G. Colonnetti, CNR, Torino, Italy
fDate :
June 27 1994-July 1 1994
Abstract :
A digital signal processing scheme for measurement of exponentially-decaying signals, such as those found in fluorescence, lifetime-based, fiber-optic sensors, is proposed. The instrument uses a modified digital phase-sensitive-detection technique with the phase locked to a fixed value and the modulation period tracking the measured lifetime. Typical resolution of the system is 0.05% for slow decay (>500 /spl mu/s) and 0.1% for fast decay.<>
Keywords :
computerised instrumentation; fibre optic sensors; fluorescence; physics computing; signal processing; signal processing equipment; temperature measurement; 500 mus; digital phase-sensitive-detection; digital signal processing; exponentially-decaying signals; fast decay; fiber-optic thermometers; fluorescence; modulation period; slow decay; Circuit testing; Counting circuits; Digital signal processing; Electronic circuits; Fluorescence; Instruments; Optical fiber sensors; Optical sensors; Signal processing; Temperature sensors;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333227
