DSP-based measuring system for temperature-compensated fiber optical oxygen sensors

Christian Stehning; Gerhard A. Holst

doi:10.1117/12.456078

14 February 2002 DSP-based measuring system for temperature-compensated fiber optical oxygen sensors

Christian Stehning, Gerhard A. Holst

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.

Citation Download Citation

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); https://doi.org/10.1117/12.456078

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available