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http://dx.doi.org/10.12772/TSE.2022.59.337

Development of Sleeve-integrated Knit Electrode for Surface EMG Monitoring  

Sora, Han (Material and Component Convergence R&D Department, Korea Institute of Industrial Technology)
Hyelim, Kim (Material and Component Convergence R&D Department, Korea Institute of Industrial Technology)
Daeyoung, Lim (Material and Component Convergence R&D Department, Korea Institute of Industrial Technology)
Wonyoung, Jeong (Material and Component Convergence R&D Department, Korea Institute of Industrial Technology)
Publication Information
Textile Science and Engineering / v.59, no.6, 2022 , pp. 337-345 More about this Journal
Abstract
Wearable biosignal monitoring systems are being developed in various fields such as healthcare, fitness, and military industries. Due to its convenience, the leg sleeve-integrated with embedded sEMG electrodes can be worn unconsciously in daily life, enabling continuous measurement and collection of biological signals. In this study, the knitting structure, electrode diameter, the amount of conductive yarn required, the coefficient of friction, the electrical resistance, the skin-electrode impedance, and the signal to noise(SNR) were measured to optimize the knit based sEMG electrodes in the sleeve. The results indicated that plain stitch was confirmed to be an economically efficient knitting process because the production time is shorter and the amount of conductive yarn per unit area is smaller than other stitch structures. In addition, the biosignal collection performance of the knitted electrode was slightly lower than that of the conventional Ag-Ag/Cl disposable wet electrode, and an electrode with a plain stitch diameter of 20 mm showed the highest value of 0.31±0.02 mV in the state of muscle activation. It suggests that it is possible to develop knitted electrodes for biosignal monitoring system.
Keywords
biosignal monitoring system; textile electrode; knit electrode; surface electromyogram (sEMG);
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