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Proceedings Paper

An Optical Fibre Sensor Array For The Measurement Of Displacements Of Complex Engineering Structures
Author(s): G. R. Petrie; K. W. Jones; R. Jones
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Paper Abstract

The system described in this paper has been developed in response to a need to measure components of the dynamic displacement of a railway track relative to the sleeper. It embodies an array of two-wavelength optical fibre displacement sensors based on the Cambridge Consultants Ltd moving shutter principle. The sensors have been designed to operate over the frequency range DC to 3.5kHz with a resolution of lom over the displacement range 0-2mm. The distribution of the sensors over the track and sleeper enables combinations of orthogonal displacement components and linear tilts to be measured. The paper describes the detailed optical, mechanical and electronic design together with experimental results which demonstrate the immunity of the system to fibre noise, differential coupling losses, etc. Furthermore, preliminary structural displacement measurements are also presented.

Paper Details

Date Published: 7 August 1986
PDF: 6 pages
Proc. SPIE 0586, Fiber Optic Sensors I, (7 August 1986); doi: 10.1117/12.951177
Show Author Affiliations
G. R. Petrie, Cambridge Consultants Ltd (England)
K. W. Jones, Cambridge Consultants Ltd (England)
R. Jones, Cambridge Consultants Ltd (England)


Published in SPIE Proceedings Vol. 0586:
Fiber Optic Sensors I
Herve J. Arditti; Luc B. Jeunhomme, Editor(s)

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