Development and optimisation of textile-based optical sensors for cardiac health monitoring

Peiris, T ORCID: https://orcid.org/0009-0009-6122-8897, Shahidi, A ORCID: https://orcid.org/0000-0002-7780-3122, Koutsogeorgis, D ORCID: https://orcid.org/0000-0001-6167-1084, Hurley, W ORCID: https://orcid.org/0000-0003-0521-7156, Oliveira, C ORCID: https://orcid.org/0000-0001-8143-3534, Dias, T and Riley, TH ORCID: https://orcid.org/0000-0001-8020-430X, 2025. Development and optimisation of textile-based optical sensors for cardiac health monitoring. In: 2024 International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles (E-Textiles). Piscataway: IEEE, pp. 198-204. ISBN 9783000804298

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Abstract

Wearable cardiac health monitoring could play a crucial role in managing an individual's cardiac health conditions. This study focuses on the development and optimisation of a textile-based optical sensor system utilising photoplethysmography (PPG) technology for continuous cardiac health monitoring. Light Emitting Diode (LED) and Photodiode (PD) electronic yarns were engineered by embedding these components into textile yarns. This is achieved by first soldering the component onto Litz wires, then by encapsulating the component inside a protective resin pod, and finally by covering the component in a braided structure. The optical properties of the E-yarns were optimised by exploring various resin micro-pod configurations and braiding techniques. The optical behaviours (transmission and reflectance as a function of wavelength) of the resin pods have been characterised. A prototype, knitted textile glove capable of monitoring blood volume variations and generating PPG waveforms has been realised. This system was validated by recording pulse rate (PR) readings from ten human subjects confirming its functionality and accuracy as a textile-based optical sensing system. This work demonstrates significant progress in integrating advanced optical sensors into wearable textile platforms, promising enhanced functionality for cardiac health monitoring applications.

Item Type:	Chapter in book
Description:	Paper presented at the 6th International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles (E-Textiles 2024), Berlin, Germany, 19-21 November 2024.
Creators:	Peiris, T., Shahidi, A., Koutsogeorgis, D., Hurley, W., Oliveira, C., Dias, T. and Riley, T.H.
Publisher:	IEEE
Place of Publication:	Piscataway
Date:	14 March 2025
ISBN:	9783000804298
Identifiers:	Number Type 10.23919/E-Textiles63767.2024.10914070 DOI 2414903 Other
Rights:	© 2025 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Divisions:	Schools > Nottingham School of Art & Design
Record created by:	Melissa Cornwell
Date Added:	18 Aug 2025 15:41
Last Modified:	18 Aug 2025 15:41
URI:	https://irep.ntu.ac.uk/id/eprint/54220

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