14 February 2002 DSP-based measuring system for temperature-compensated fiber optical oxygen sensors
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Proceedings Volume 4578, Fiber Optic Sensor Technology and Applications 2001; (2002) https://doi.org/10.1117/12.456078
Event: Environmental and Industrial Sensing, 2001, Boston, MA, United States
Abstract
A new signal processing approach for fiberoptical sensors, microoptodes, is presented. All signal generation and processing is completely based on a fast, low-cost DSP (Digital Signal Processor). This enables the implementation of new features such as a simultaneous multi-frequency measurement to resolve different analytical parameters in the luminescence signal. For instance, a hybrid sensor was applied to simultaneously sense the temperature and oxygen concentration, and the temperature information was used to compensate for the temperature effect on the oxygen measurement. As a further benefit, recent improvements in indicator chemistry and fiber tip preparation also yield a luminescence signal level high enough to be detected with a common photodiode instead of a photomultiplier tube. Consequently, the combination of small detectors and highly integrated DSPs enable portable, handheld measurement devices with very little calibration requirements.
© (2002) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christian Stehning and Gerhard A. Holst "DSP-based measuring system for temperature-compensated fiber optical oxygen sensors", Proc. SPIE 4578, Fiber Optic Sensor Technology and Applications 2001, (14 February 2002); doi: 10.1117/12.456078; https://doi.org/10.1117/12.456078
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