Long-term stable optical sensor arrangement, especially a hydrogen sensor, and combined gas sensor arrangement

摘要

#CMT# #/CMT# The arrangement has a light guiding body (106) transparent to emitted radiation, and an analyte sensitive transducer (102) at upper surface of the light guiding body such that the emitted radiation strikes on an upper surface of the transducer. A detector (112) detects a correction signal for calibrating a measuring signal. The transducer is designed such that a physical characteristic different from an optical characteristic changes in response to presence and/or concentration of the analyte. The detector detects the change of the physical characteristic. #CMT#USE : #/CMT# Optical sensor i.e. hydrogen sensor, arrangement for use in a motor vehicle for detecting an analyte i.e. hydrogen, in a gaseous measuring medium. #CMT#ADVANTAGE : #/CMT# The analyte sensitive transducer is designed such that the physical characteristic different from the optical characteristic changes in response to the presence and/or concentration of the analyte, thus increasing the robustness and reliability of the sensor over a longer actual working time. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic representation of an optical sensor arrangement. 102 : Analyte-sensitive transducer 104 : Measuring medium 106 : Light guiding body 108 : Radiation source 112 : Detector.