Design of a vibration-insensitive surface-mounted wide-range FBG tilt sensor

Sayantani Lala; Nandini Basumallick; Shweta Pant; Palas Biswas; Somnath Bandyopadhyay

doi:10.1117/12.3044525

11 October 2024 Design of a vibration-insensitive surface-mounted wide-range FBG tilt sensor

Sayantani Lala, Nandini Basumallick, Shweta Pant, Palas Biswas, Somnath Bandyopadhyay

Author Affiliations +

Proceedings Volume 13276, Second International Conference on Current Trends in Physics and Photonics (ICCTPP 2024); 1327604 (2024) https://doi.org/10.1117/12.3044525
Event: 2nd International Conference on Current Trends in Physics and Photonics (ICCTPP 2024), 2024, Pune, India

Abstract

Tilt sensors are devices that measure the tilt or slope of an object with respect to a reference. Fibre Bragg Grating (FBG) tilt sensors are a specific type of tilt sensor that utilizes the principle of Bragg’s law in fiber optics to measure tilt angles. In a FBG tilt sensor, the optical fibre is usually placed such that there is a shift in the Bragg wavelength with the change of orientation of the monitored object thus eliciting a sensor response. The advantages of an FBG tilt sensor over traditional sensor is its high precision of measurement and insensitivity to EMI. The FBG tilt sensor in this study is designed to operate accurately and reliably in the presence of vibrations or mechanical oscillations over a range of 0-50°. The structure of the sensor consists of the sensing element attached to a single body cantilever with optimized variable cross-section for adequate strain enhancement. The sensitivity of the sensor is approximately 31 pm/° and the resonant frequency is approximately 40 Hz. A vibration isolation mechanism is designed for this sensor where a neoprene pad is attached between the main body and the mount of the sensor. A finite element analysis is conducted to comparatively verify the sensor’s performance with and without the vibration isolation scheme. It has been found from the results that the current design scheme has been effective in isolating the response of the sensor from environmental vibrations. This sensor can thus be reliably used in machines/structures subjected to random vibrations in various application areas such as aerospace, automotive, structural health monitoring, and industrial automation, where stable and accurate measurements are crucial.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Sayantani Lala, Nandini Basumallick, Shweta Pant, Palas Biswas, and Somnath Bandyopadhyay "Design of a vibration-insensitive surface-mounted wide-range FBG tilt sensor", Proc. SPIE 13276, Second International Conference on Current Trends in Physics and Photonics (ICCTPP 2024), 1327604 (11 October 2024); https://doi.org/10.1117/12.3044525

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Sensors

Fiber Bragg gratings

Vibration

Design

Bragg wavelengths

Finite element methods

Vibration isolation

Keywords/Phrases

Search In:

Publication Years