Development of Sleeve-integrated Knit Electrode for Surface EMG Monitoring
Vol. 59, No. 6, pp. 337-345,
Dec. 2022
10.12772/TSE.2022.59.337
PDF
Abstract
Wearable biosignal monitoring systems are being developed in various fields
such as healthcare, fitness, and military industries. Due to its convenience, the leg sleeveintegrated
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.
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