Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing
An optical fibre sensor for monitoring relative humidity (RH) changes during exercise is demonstrated. The humidity sensor comprises a tip coating of poly (allylamine hydrochloride) (PAH)/silica nanoparticles (SiO<sub>2</sub> NPs) deposited using the layer-by-layer technique. An uncoated...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-03-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/20/7/1904 |
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| author | Chenyang He Serhiy Korposh Francisco Ulises Hernandez Liangliang Liu Ricardo Correia Barrie R. Hayes-Gill Stephen P. Morgan |
| author_facet | Chenyang He Serhiy Korposh Francisco Ulises Hernandez Liangliang Liu Ricardo Correia Barrie R. Hayes-Gill Stephen P. Morgan |
| author_sort | Chenyang He |
| collection | DOAJ |
| description | An optical fibre sensor for monitoring relative humidity (RH) changes during exercise is demonstrated. The humidity sensor comprises a tip coating of poly (allylamine hydrochloride) (PAH)/silica nanoparticles (SiO<sub>2</sub> NPs) deposited using the layer-by-layer technique. An uncoated fibre is employed to compensate for bending losses that are likely to occur during movement. A linear fit to the response of the sensing system to RH demonstrates a sensitivity of 3.02 mV/% (R<sup>2</sup> = 0.96), hysteresis ± 1.17% RH when 11 bilayers of PAH/SiO<sub>2</sub> NPs are coated on the tip of the fibre. The performance of two different textiles (100% cotton and 100% polyester) were tested in real-time relative humidity measurement for 10 healthy volunteers. The results demonstrate the moisture wicking properties of polyester in that the relative humidity dropped more rapidly after cessation of exercise compared to cotton. The approach has the potential to be used to monitor sports performance and by clothing developers for characterising different garment designs. |
| first_indexed | 2024-03-10T20:49:07Z |
| format | Article |
| id | doaj.art-b8ca150d76254d60a6f06dada41ff7ba |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T20:49:07Z |
| publishDate | 2020-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-b8ca150d76254d60a6f06dada41ff7ba2023-11-19T20:07:03ZengMDPI AGSensors1424-82202020-03-01207190410.3390/s20071904Real-Time Humidity Measurement during Sports Activity using Optical Fibre SensingChenyang He0Serhiy Korposh1Francisco Ulises Hernandez2Liangliang Liu3Ricardo Correia4Barrie R. Hayes-Gill5Stephen P. Morgan6Optics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UKOptics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UKFootfalls and Heartbeats UK Ltd, Innovation Building, Biocity, Nottingham NG1 1GF, UKOptics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UKOptics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UKOptics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UKOptics and Photonics Group, Faculty of Engineering, University of Nottingham, Nottingham NG7 2RD, UKAn optical fibre sensor for monitoring relative humidity (RH) changes during exercise is demonstrated. The humidity sensor comprises a tip coating of poly (allylamine hydrochloride) (PAH)/silica nanoparticles (SiO<sub>2</sub> NPs) deposited using the layer-by-layer technique. An uncoated fibre is employed to compensate for bending losses that are likely to occur during movement. A linear fit to the response of the sensing system to RH demonstrates a sensitivity of 3.02 mV/% (R<sup>2</sup> = 0.96), hysteresis ± 1.17% RH when 11 bilayers of PAH/SiO<sub>2</sub> NPs are coated on the tip of the fibre. The performance of two different textiles (100% cotton and 100% polyester) were tested in real-time relative humidity measurement for 10 healthy volunteers. The results demonstrate the moisture wicking properties of polyester in that the relative humidity dropped more rapidly after cessation of exercise compared to cotton. The approach has the potential to be used to monitor sports performance and by clothing developers for characterising different garment designs.https://www.mdpi.com/1424-8220/20/7/1904optical fibre sensorhumidity sensinglayer-by-layerreal-time measurementsmart textileswearable technology |
| spellingShingle | Chenyang He Serhiy Korposh Francisco Ulises Hernandez Liangliang Liu Ricardo Correia Barrie R. Hayes-Gill Stephen P. Morgan Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing Sensors optical fibre sensor humidity sensing layer-by-layer real-time measurement smart textiles wearable technology |
| title | Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing |
| title_full | Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing |
| title_fullStr | Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing |
| title_full_unstemmed | Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing |
| title_short | Real-Time Humidity Measurement during Sports Activity using Optical Fibre Sensing |
| title_sort | real time humidity measurement during sports activity using optical fibre sensing |
| topic | optical fibre sensor humidity sensing layer-by-layer real-time measurement smart textiles wearable technology |
| url | https://www.mdpi.com/1424-8220/20/7/1904 |
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