Novel 3D-printed biaxial tilt sensor based on fiber Bragg grating sensing approach
Document Type
Article
Publication Date
10-15-2021
Abstract
In this work, a novel 3D-printed biaxial sensor system for tilt measurement, based primarily on the use of four Fiber Bragg Grating (FBG) devices, has been developed and its performance characterized. The tilt sensor system created is of a compact design and relatively small dimensions, making it ideally suited to a variety of industrial applications. In the system developed, the four FBGs used were spliced in a serial formation and attached to four different sides of the sensor structure designed, to allow biaxial measurements to be made. The wavelengths' shift of the FBGs used were monitored as a function of the tilt of the device, using an Optical Spectrum Analyzer (OSA) for this development work. In the sensor, an average FBG-based responsivity of 0.01 nm/degrees of tilt was measured for each of the different FBGs used. To provide compensation for temperature changes in the system itself, a further FBG-based approach was used (in which they were configured to be insensitive to the effect of the tilt). They were thus calibrated by being exposed to a range of operational temperatures for the system, showing, as a result, a calibration of 0.011 nm/degrees C. Prior work on the sensor system had proved it to be highly linear in response, over the tilt range of 0 degrees +/- 90 degrees. The experimental results obtained from the performance characterization indicate that the small, compact design of this type yields excellent responsivity, compared to other larger and more complex designs discussed in the literature. The sensor system was also relatively easy to fabricate using the 3D-printing method, creating in that way an inexpensive, temperature-compensated tilt monitoring device that had a wide variety of potential industrial applications. (C) 2021 Elsevier B.V. All rights reserved.
Keywords
3D-print, Tilt sensor, Fiber Bragg grating, Biaxial measurement
Divisions
PHYSICS,photonics
Funders
British Council-MIGHT NUOF (IF022-2020),Universiti Malaya (RK021-2019),Universiti Malaya (TOP100PRC),Royal Academy of Engineering - UK
Publication Title
Sensors and Actuators A: Physical
Volume
330
Publisher
Elsevier Science
Publisher Location
PO BOX 564, 1001 LAUSANNE, SWITZERLAND