Publication detail

Bragg grating implementation of fibre optic inclinometer

URBAN, F. jr. HELÁN, R. URBAN, F. sr. KOČÍ, L. ELIÁŠ, J.

Original Title

Bragg grating implementation of fibre optic inclinometer

English Title

Bragg grating implementation of fibre optic inclinometer

Type

conference paper

Language

en

Original Abstract

The paper shows the solution of the temperature independent fiber optic Bragg gratings based inclinometer. The principle of the inclinometer uses four sensing gratings situated in the medians of the regular tetrahedron. There is the weight placed in the tetrahedron’s center of gravity, connected to the sensing gratings. Changes in the grating deformations, caused by the change of weight’s gravitation force direction, occur due to the tilt of the inclinometer construction. The grating deformations are evaluated by the wavelength shifts of the reflective light. The angles of rotation around the reference axis can then be calculated. Construction of the inclinometer based on the discussed principle is shown, measured curves of the reflective wavelengths against the tilts of the inclinometer in the two axes are presented and the way of the tilt evaluation from the measured data is indicated. The described solution of the inclinometer is capable of measuring the tilt angles in the two perpendicular horizontal axes in the range of 2π rad with high accuracy and temperature independence.

English abstract

The paper shows the solution of the temperature independent fiber optic Bragg gratings based inclinometer. The principle of the inclinometer uses four sensing gratings situated in the medians of the regular tetrahedron. There is the weight placed in the tetrahedron’s center of gravity, connected to the sensing gratings. Changes in the grating deformations, caused by the change of weight’s gravitation force direction, occur due to the tilt of the inclinometer construction. The grating deformations are evaluated by the wavelength shifts of the reflective light. The angles of rotation around the reference axis can then be calculated. Construction of the inclinometer based on the discussed principle is shown, measured curves of the reflective wavelengths against the tilts of the inclinometer in the two axes are presented and the way of the tilt evaluation from the measured data is indicated. The described solution of the inclinometer is capable of measuring the tilt angles in the two perpendicular horizontal axes in the range of 2π rad with high accuracy and temperature independence.

Keywords

Measurement; Sensors; Instrumentation; FBG, Inclinometer

Released

20.09.2017

Publisher

SEIA2017

Location

Moskva

ISBN

978-84-697-5615-7

Book

Sensors and Electronic Instrumentation Advances: Proceedings of the 3rd International Conference on Sensors and Electronic Instrumentation Advances

Edition

1

Edition number

1

Pages from

191

Pages to

195

Pages count

236

BibTex


@inproceedings{BUT138914,
  author="František {Urban} and Radek {Helán} and František {Urban} and Lukáš {Kočí} and Josef {Eliáš}",
  title="Bragg grating implementation of fibre optic inclinometer",
  annote="The paper shows the solution of the temperature independent fiber optic Bragg gratings based inclinometer. The principle of the inclinometer uses four sensing gratings situated in the medians of the regular tetrahedron. There is the weight placed in the tetrahedron’s center of gravity, connected to the sensing gratings. Changes in the grating deformations, caused by the change of weight’s gravitation force direction, occur due to the tilt of the inclinometer construction. The grating deformations are evaluated by the wavelength shifts of the reflective light. The angles of rotation around the reference axis can then be calculated. Construction of the inclinometer based on the discussed principle is shown, measured curves of the reflective wavelengths against the tilts of the inclinometer in the two axes are presented and the way of the tilt evaluation from the measured data is indicated. The described solution of the inclinometer is capable of measuring the tilt angles in the two perpendicular horizontal axes in the range of 2π rad with high accuracy and temperature independence.",
  address="SEIA2017",
  booktitle="Sensors and Electronic Instrumentation Advances: Proceedings of the 3rd International Conference on Sensors and Electronic Instrumentation Advances",
  chapter="138914",
  edition="1",
  howpublished="electronic, physical medium",
  institution="SEIA2017",
  year="2017",
  month="september",
  pages="191--195",
  publisher="SEIA2017",
  type="conference paper"
}