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

Hernandez, F.U.; Correia, R.; Morgan, S.P.; Hayes-Gill, B.; Evans, D.; Sinha, R.; Norris, A.; Harvey, D.; Hardman, J.G.; Korposh, Sergiy

Authors

F.U. Hernandez

BARRIE HAYES-GILL BARRIE.HAYES-GILL@NOTTINGHAM.AC.UK
Professor of Electronic Systems and Medical Devices

D. Evans

R. Sinha

A. Norris

D. Harvey

J.G. Hardman



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.

Citation

Hernandez, F., Correia, R., Morgan, S., Hayes-Gill, B., Evans, D., Sinha, R., …Korposh, S. (2016). Simultaneous temperature and humidity measurements in a mechanical ventilator using an optical fibre sensor. Proceedings of SPIE, 9916, https://doi.org/10.1117/12.2236850

Journal Article Type Conference Paper
Conference Name Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016)
Online Publication Date May 30, 2016
Publication Date May 30, 2016
Deposit Date Jun 8, 2016
Publicly Available Date Jun 8, 2016
Print ISSN 0277-786X
Electronic ISSN 0277786X
Publisher Society of Photo-optical Instrumentation Engineers
Peer Reviewed Peer Reviewed
Volume 9916
Article Number 99160C
Book Title Sixth European Workshop on Optical Fibre Sensors
DOI https://doi.org/10.1117/12.2236850
Keywords Temperature, Humidity, Fibre Bragg grating, Fabry-Perot, layer-by-layer, Mechanical ventilator
Public URL http://eprints.nottingham.ac.uk/id/eprint/33820
Publisher URL https://www.spiedigitallibrary.org/conference-proceedings-of-spie/9916/1/Simultaneous-temperature-and-humidity-measurements-in-a-mechanical-ventilator-using/10.1117/12.2236850.short?SSO=1
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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.

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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