Study of a novel distributed vibration sensing system based on weak fiber Bragg gratings

2018 ◽  
Vol 85 (7) ◽  
pp. 437
Author(s):  
Zhang Jian
Keyword(s):  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Sensing System ◽  
Vibration Sensing

scholarly journals Tactile Sensor Array with Fiber Bragg Gratings in Quasi-Distributed Sensing

2018 ◽  
Vol 2018 ◽  
pp. 1-8 ◽  
Author(s):  
Marcelo A. Pedroso ◽  
Lucas H. Negri ◽  
Marcos A. Kamizi ◽  
José L. Fabris ◽  
Marcia Muller
Keyword(s):  
Differential Evolution ◽  
Compressive Sensing ◽  
Sensor Array ◽  
Fiber Bragg Gratings ◽  
Tactile Sensor ◽  
Bragg Gratings ◽  
Central Position ◽  
Reconstruction Method ◽  
Sensing System ◽  
Tactile Sensor Array

This work describes the development of a quasi-distributed real-time tactile sensing system with a reduced number of fiber Bragg grating-based sensors and reports its use with a reconstruction method based on differential evolution. The sensing system is comprised of six fiber Bragg gratings encapsulated in silicone elastomer to form a tactile sensor array with total dimensions of 60 × 80 mm, divided into eight sensing cells with dimensions of 20 × 30 mm. Forces applied at the central position of the sensor array resulted in linear response curves for the gratings, highlighting their coupled responses and allowing the application of compressive sensing. The reduced number of sensors regarding the number of sensing cells results in an undetermined inverse problem, solved with a compressive sensing algorithm with the aid of differential evolution method. The system is capable of identifying and quantifying up to four different loads at four different cells with relative errors lower than 10.5% and signal-to-noise ratio better than 12 dB.

scholarly journals A Two Fiber Bragg Gratings Sensing System to Monitor the Torque of Rotating Shaft

Sensors ◽  
2016 ◽  
Vol 16 (1) ◽  
pp. 138 ◽  
Author(s):  
Yongjiao Wang ◽  
Lei Liang ◽  
Yinquan Yuan ◽  
Gang Xu ◽  
Fang Liu
Keyword(s):  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Rotating Shaft ◽  
Sensing System

An optical sensing system for the concentration of methane based on fiber Bragg gratings

2007 ◽  
Vol 3 (6) ◽  
pp. 410-412 ◽  
Author(s):  
Bin Zhou ◽  
Guo-rong Liu ◽  
Zu-guang Guan ◽  
Sai-ling He
Keyword(s):  
Optical Sensing ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Sensing System
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