E-Textiles 2021Pub Date : 2022-03-11DOI: 10.3390/engproc2022015007
Kevin Kiener, Aishwarya Anand, W. Fobelets, K. Fobelets
{"title":"Respiratory Inductive Plethysmography System for Knitted Helical Coils","authors":"Kevin Kiener, Aishwarya Anand, W. Fobelets, K. Fobelets","doi":"10.3390/engproc2022015007","DOIUrl":"https://doi.org/10.3390/engproc2022015007","url":null,"abstract":": Three-dimensional knitted helical coils are very sensitive inductive sensors that can be used to monitor breathing. Their inductance is high and the quality factor relatively low. A read-out circuit is designed and tested to track the inductance variations during circumference changes of a phantom chest. The challenge of the low-quality factors of the coil is resolved by designing a double cross-coupled FET pair with low capacitance. A digital counter records the frequency. A microprocessor samples the signal every 250 ms to minimize power consumption.","PeriodicalId":420270,"journal":{"name":"E-Textiles 2021","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130004290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E-Textiles 2021Pub Date : 2022-03-09DOI: 10.3390/engproc2022015004
H. Tahir, B. Malengier, G. B. Tseghai, L. Van Langenhove
{"title":"Sensing of Body Movement by Stretchable Triboelectric Embroidery Aimed at Healthcare and Sports Activity Monitoring","authors":"H. Tahir, B. Malengier, G. B. Tseghai, L. Van Langenhove","doi":"10.3390/engproc2022015004","DOIUrl":"https://doi.org/10.3390/engproc2022015004","url":null,"abstract":": In this work, we introduced an embroidery-based stretchable (up to 60–70%) triboelectric nano-generator that could be attached to different parts of the human body such as fingers, knee, elbow, back, or shoulders, to sense the body movement. It can be used as activity recognition for health care and sport activity monitoring. The sensor was composed of different yarns embroidered on a stretchable conductive substrate, allowing it to sense diverse mechanical deformation of different body parts. Different stitching styles, patterns, stitch lengths, and shapes have been selected to cater to the unidirectional, bidirectional, and multidirectional force and obtain the maximum movement flexibility. In order to do embroidery on a stretchable substrate, a non-stretchable water-soluble second substrate has been added before embroidering, and is afterwards removed by application of steam. A sample of 1.5 × 6 cm 2 was used for sensing finger movement and generated a peak to peak voltage of 274.5 mV. The amount of generated voltage depended upon the application area on the body and its deformation, thread type, stitch type, stitch length, and shape of embroidery. A stitch length of more than 2 mm with a line density of 1 line per mm resulted in a stretchable sample. The state of the art of the developed sensors is their low price, flexibility, and low weight. They are all obtained with commercially available embroidery yarns and commercially available technology for their development.","PeriodicalId":420270,"journal":{"name":"E-Textiles 2021","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128209260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E-Textiles 2021Pub Date : 2022-03-09DOI: 10.3390/engproc2022015002
M. Nashed, Arash M. Shahidi, Theodore Hughes‐Riley, T. Dias
{"title":"Finite-Element Analysis of the Mechanical Stresses on the Core Structure of Electronically Functional Yarns","authors":"M. Nashed, Arash M. Shahidi, Theodore Hughes‐Riley, T. Dias","doi":"10.3390/engproc2022015002","DOIUrl":"https://doi.org/10.3390/engproc2022015002","url":null,"abstract":"","PeriodicalId":420270,"journal":{"name":"E-Textiles 2021","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114980465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E-Textiles 2021Pub Date : 2022-03-09DOI: 10.3390/engproc2022015003
Jitheesh V R, Rashmi Thakur, P. Jana
{"title":"Development of Smart Kneecap with Electrical Stimulation","authors":"Jitheesh V R, Rashmi Thakur, P. Jana","doi":"10.3390/engproc2022015003","DOIUrl":"https://doi.org/10.3390/engproc2022015003","url":null,"abstract":"","PeriodicalId":420270,"journal":{"name":"E-Textiles 2021","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130478424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E-Textiles 2021Pub Date : 2022-03-09DOI: 10.3390/engproc2022015005
Yi Zhou, Chunyan Zhang, C. Myant, R. Stewart
{"title":"Knitted Graphene Supercapacitor and Pressure-Sensing Fabric","authors":"Yi Zhou, Chunyan Zhang, C. Myant, R. Stewart","doi":"10.3390/engproc2022015005","DOIUrl":"https://doi.org/10.3390/engproc2022015005","url":null,"abstract":": This research utilizes a simple and effective dip coating/ultrasonication method to prepare porous graphene-coated sensing fabrics made with commercially produced acrylic/spandex yarn with multifunctional performance. We examine the electrochemical performance of graphene-coated fabrics and explore their potential in applications involving pressure sensors. The results show that our graphene-coated fabric demonstrates a maximum specific capacitance value of 17.4 F/g. When applied as a pressure sensor, the capacitance change rate of our sensor increases linearly with the increase in pressure applied to the fabrics. Our sensor also shows a fast response in a pressure loading–unloading test, which indicates an outstanding sensing property and shows promising capabilities as a supercapacitor.","PeriodicalId":420270,"journal":{"name":"E-Textiles 2021","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129896465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}