Next Article in Journal
A New Polar Transfer Alignment Algorithm with the Aid of a Star Sensor and Based on an Adaptive Unscented Kalman Filter
Next Article in Special Issue
Waveguide Bragg Gratings in Ormocer®s for Temperature Sensing
Previous Article in Journal
Effect of MgO Underlying Layer on the Growth of GaOx Tunnel Barrier in Epitaxial Fe/GaOx/(MgO)/Fe Magnetic Tunnel Junction Structure
Previous Article in Special Issue
Review and Analysis of Peak Tracking Techniques for Fiber Bragg Grating Sensors
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Sensors 2017, 17(10), 2414; https://doi.org/10.3390/s17102414

Low-Cost Interrogation Technique for Dynamic Measurements with FBG-Based Devices

1
Telecommunications Laboratory LABTEL, Electrical Engineering Department, Federal University of Espírito Santo, 29075-910 Espírito Santo, Brazil
2
Department of Physics & I3N, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
3
Instituto de Telecomunicações, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
4
Centre for Mechanical Technology and Automation, Department of Mechanical Engineering, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal
5
Department of Electrical and Computer Engineering and Instituto de Telecomunicações, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
*
Author to whom correspondence should be addressed.
Received: 29 September 2017 / Revised: 13 October 2017 / Accepted: 20 October 2017 / Published: 23 October 2017
(This article belongs to the Special Issue Fiber Bragg Grating Based Sensors)
Full-Text   |   PDF [2650 KB, uploaded 24 October 2017]   |  

Abstract

Fiber Bragg gratings are widely used optical fiber sensors for measuring temperature and/or mechanical strain. Nevertheless, the high cost of the interrogation systems is the most important drawback for their large commercial application. In this work, an in-line Fabry–Perot interferometer based edge filter is explored in the interrogation of fiber Bragg grating dynamic measurements up to 5 kHz. Two devices an accelerometer and an arterial pulse wave probe were interrogated with the developed approach and the results were compared with a commercial interrogation monitor. The data obtained with the edge filter are in agreement with the commercial device, with a maximum RMSE of 0.05 being able to meet the requirements of the measurements. Resolutions of 3.6 pm and 2.4 pm were obtained, using the optical accelerometer and the arterial pulse wave probe, respectively. View Full-Text
Keywords: interrogation technique; fiber Bragg grating (FBG); in-line Fabry–Perot interferometer (FPI); optical accelerometer; arterial central pulse waveform; cardiovascular monitoring interrogation technique; fiber Bragg grating (FBG); in-line Fabry–Perot interferometer (FPI); optical accelerometer; arterial central pulse waveform; cardiovascular monitoring
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Díaz, C.A.R.; Leitão, C.; Marques, C.A.; Domingues, M.F.; Alberto, N.; Pontes, M.J.; Frizera, A.; Ribeiro, M.R.N.; André, P.S.B.; Antunes, P.F.C. Low-Cost Interrogation Technique for Dynamic Measurements with FBG-Based Devices. Sensors 2017, 17, 2414.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top