Application of long period gratings sensors to respiratory function monitoring

Allsop, Thomas D.P.; Earthgrowl, T.; Revees, R.; Webb, D.J.; Miller, M.; Jones, B. and Bennion, I. Application of long period gratings sensors to respiratory function monitoring. IN: Smart medical and biomedical sensor technology II. Cullum, Brian M. (ed.) SPIE proceedings . SPIE.


A series of in-line curvature sensors on a garment are used to monitor the thoracic and abdominal movements of a human during respiration. These results are used to obtain volumetric tidal changes of the human torso showing reasonable agreement with a spirometer used simultaneously to record the volume at the mouth during breathing. The curvature sensors are based upon long period gratings written in a progressive three layered fibre that are insensitive to refractive index changes. The sensor platform consists of the long period grating laid upon a carbon fibre ribbon, which is encapsulated in a low temperature curing silicone rubber. An array of sensors is also used to reconstruct the shape changes of a resuscitation manikin during simulated respiration. The data for reconstruction is obtained by two methods of multiplexing and interrogation: firstly using the transmission spectral profile of the LPG's attenuation bands measured using an optical spectrum analyser; secondly using a derivative spectroscopy technique.

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Divisions: ?? 50495000Jl ??
Engineering & Applied Sciences > Electrical, electronic & power engineering
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Additional Information: Thomas D. Allsop ; Tim Earthrowl ; Richard Revees ; David J. Webb ; Martin Miller ; Barrie W. Jones and Ian Bennion "Application of long-period grating sensors to respiratory function monitoring", Proc. SPIE 5588, Smart Medical and Biomedical Sensor Technology II, 148 (December 7, 2004); Copyright 2004 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
Event Title: Smart Medical and Biomedical Sensor Technology II
Event Type: Other
Event Dates: 2004-10-25
Uncontrolled Keywords: curvature sensing,respiratory monitoring,long period gratings,Engineering(all)



Version: Published Version

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