Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor

Hernandez, F.U. and Correia, R. and Morgan, S.P. and Hayes-Gill, B. and Evans, D. and Sinha, R. and Norris, A. and Harvey, D. and Hardman, J.G. and Korposh, S. (2016) Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor. In: Sixth European Workshop on Optical Fibre Sensors, 31 May - 03 June 2016, Limerick, Ireland.

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Abstract

An optical fibre sensor for simultaneous temperature and humidity measurements consisting of one fibre Bragg grating (FBG) to measure temperature and a mesoporous film of bilayers of Poly(allylamine hydrochloride)(PAH) and silica (SiO2) nanoparticles deposited onto the tip of the same fibre to measure humidity is reported. The hygroscopic film was created using the layer-by-layer (LbL) method and the optical reflection spectra were measured up to a maximum of 23 bilayers. The temperature sensitivity of the FBG was 10 pm/°C while the sensitivity to humidity was (-1.4x10-12 W / %RH) using 23 bilayers. The developed sensor was tested in the mechanical ventilator and temperature and humidity of the delivered artificial air was simultaneously measured. Once calibrated, the optical fibre sensor has the potential to control the absolute humidity as an essential part of critical respiratory care. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

Item Type: Conference or Workshop Item (Paper)
Additional Information: F.U. Hernandez ; R. Correia ; S.P. Morgan ; B. Hayes-Gill ; D. Evans ; R. Sinha ; A. Norris ; D. Harvey ; J.G. Hardman and S. Korposh " Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99160C (May 30, 2016); doi:10.1117/12.2236850 ; http://dx.doi.org/10.1117/12.2236850. Copyright 2016 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print 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.
Keywords: Temperature, Humidity, Fibre Bragg grating, Fabry-Perot, layer-by-layer, Mechanical ventilator
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Electrical and Electronic Engineering
Identification Number: https://doi.org/10.1117/12.2236850
Depositing User: Eprints, Support
Date Deposited: 08 Jun 2016 09:40
Last Modified: 14 Sep 2016 08:58
URI: http://eprints.nottingham.ac.uk/id/eprint/33820

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