Home // ALLSENSORS 2019, The Fourth International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article
Authors:
Jernej Hribar
Boris Macuh
Dušan Gleich
Denis Đonlagić
Keywords: Low-cost interrogator; optical fiber sensor; pressure measurement; internal combustion engine; signal processing algorithm
Abstract:
This contribution presents a novel low-cost approach to inter-rogation of short cavity Fabry-Perot optical fiber sensors and their use for pressure measurements in a combustion chamber of a petrol or diesel engine. The optical fiber sensor interroga-tion system is based on laser diodes with different wavelengths. Reflectance from Fabry-Perot sensors at three different wave-lengths was observed to determine the cavity length, using spe-cially developed signal processing algorithms. The interrogation system was evaluated statically and dynamically. It is shown that the interrogation system has a resolution of about 2 nm and bandwidth of 16 kHz. Two sensor designs were studied and evaluated in both the laboratory environment and in a combustion chamber of the engine. Both sensor designs are executed on the tip of the optical fiber, with etching, cleaving and splicing of special optical fibers.
Pages: 21 to 26
Copyright: Copyright (c) IARIA, 2019
Publication date: February 24, 2019
Published in: conference
ISSN: 2519-836X
ISBN: 978-1-61208-691-0
Location: Athens, Greece
Dates: from February 24, 2019 to February 28, 2019