An Optical Fibre Sensor Array For The Measurement Of Displacements Of Complex Engineering Structures

G. R. Petrie; K. W. Jones; R. Jones

doi:10.1117/12.951177

7 August 1986 An Optical Fibre Sensor Array For The Measurement Of Displacements Of Complex Engineering Structures

G. R. Petrie, K. W. Jones, R. Jones

Proceedings Volume 0586, Fiber Optic Sensors I; (1986) https://doi.org/10.1117/12.951177
Event: 1985 International Technical Symposium/Europe, 1985, Cannes, France

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.

Citation Download Citation

G. R. Petrie, K. W. Jones, and R. Jones "An Optical Fibre Sensor Array For The Measurement Of Displacements Of Complex Engineering Structures", Proc. SPIE 0586, Fiber Optic Sensors I, (7 August 1986); https://doi.org/10.1117/12.951177

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