Fiber Bragg Grating basedLandslide Early Warning System

Pant, S and Umesh, S and Asokan, S (2018) Fiber Bragg Grating basedLandslide Early Warning System. In: 3rd International Conference On Internet of Things: Smart Innovation and Usages, IoT-SIU 2018, 23 - 24 February 2018, Bhimtal.

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Abstract

Landslides are natural hazards which are known to cause loss of life and infrastructural damage. Landslide Early Warning System (LEWS) is intended to predict the occurrence of the landslide which provides ample time to initiate necessary protective measures. In the present study, a Fiber Bragg Grating (FBG) sensor based vibration sensor which can acquire the seismic vibrations is proposed as an LEWS. The proposed Fiber Bragg Grating Vibration Sensor (FBGVS) works on a specially designed cantilever structure, through which the seismic vibrations can be obtained in the form of strain variations on the cantilever. The strain variations over the cantilever will be acquired by the FBG sensor bonded over it. The cantilever is specially designed such that the strain sensitivity of the FBGVS is enhanced, by the appending of torsional strain along with the axial strain. Experimental trials have been carried out which prove the efficacy of the FBGVS to acquire the seismic vibrations. FBGVS acts as the sensing element for an IoT system to ensure the landslide warning signal is transmitted to all remote locations, effectively making an efficient LEWS.

Item Type:	Conference Paper
Publication:	Proceedings - 2018 3rd International Conference On Internet of Things: Smart Innovation and Usages, IoT-SIU 2018
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the IEEE.
Keywords:	Electric sensing devices; Fiber optic sensors; Fibers; Internet of things; Landslides; Nanocantilevers; Seismology; Ventilation exhausts; Vibration measurement, Cantilever structures; Early Warning System; Experimental trials; Fiber Bragg Grating Sensors; Protective measures; Seismic vibrations; Strain sensitivity; Vibration sensors, Fiber Bragg gratings
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	04 Aug 2022 06:41
Last Modified:	04 Aug 2022 06:41
URI:	https://eprints.iisc.ac.in/id/eprint/75176

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