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Sensors 2014, 14(7), 13088-13101; https://doi.org/10.3390/s140713088

An Optical Fibre-Based Sensor for Respiratory Monitoring

1
Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, 9014 St. Gallen, Switzerland
2
ETH Zurich, Swiss Federal Institute of Technology, Department of Information Technology and Electrical Engineering, Gloriastrasse 35, 8092 Zurich, Switzerland
*
Author to whom correspondence should be addressed.
Received: 29 April 2014 / Revised: 29 April 2014 / Accepted: 15 July 2014 / Published: 21 July 2014
(This article belongs to the Special Issue Biomedical Sensors and Systems)
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Abstract

In this paper, a textile-based respiratory sensing system is presented. Highly flexible polymeric optical fibres (POFs) that react to applied pressure were integrated into a carrier fabric to form a wearable sensing system. After the evaluation of different optical fibres, different setups were compared. To demonstrate the feasibility of such a wearable sensor, the setup featuring the best performance was placed on the human torso, and thus it was possible to measure the respiratory rate. Furthermore, we show that such a wearable system enables to keep track of the way of breathing (diaphragmatic, upper costal and mixed) when the sensor is placed at different positions of the torso. A comparison of the results with the output of some commercial respiratory measurements devices confirmed the utility of such a monitoring device. View Full-Text
Keywords: breathing monitoring; fibre optic sensing; respiratory rate; medical textiles; photonic textiles; technical textiles breathing monitoring; fibre optic sensing; respiratory rate; medical textiles; photonic textiles; technical textiles
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This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Krehel, M.; Schmid, M.; Rossi, R.M.; Boesel, L.F.; Bona, G.-L.; Scherer, L.J. An Optical Fibre-Based Sensor for Respiratory Monitoring. Sensors 2014, 14, 13088-13101.

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