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Smart Textiles for Improved Quality of Life and Cognitive Assessment
Article

Development and Characterization of Embroidery-Based Textile Electrodes for Surface EMG Detection

1
Material and Component Convergence R&D Department, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea
2
Reliability Assesment Center, FITI Testing and Research Institute, Seoul 07791, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Carlo Ricciardi
Sensors 2022, 22(13), 4746; https://doi.org/10.3390/s22134746
Received: 9 May 2022 / Revised: 15 June 2022 / Accepted: 21 June 2022 / Published: 23 June 2022
(This article belongs to the Special Issue Electronic Textiles and Innovative Wearables)
The interest in wearable devices has expanded to measurement devices for building IoT-based mobile healthcare systems and sensing bio-signal data through clothing. Surface electromyography, called sEMG, is one of the most popular bio-signals that can be applied to health monitoring systems. In general, gel-based (Ag/AgCl) electrodes are mainly used, but there are problems, such as skin irritation due to long-time wearing, deterioration of adhesion to the skin due to moisture or sweat, and low applicability to clothes. Hence, research on dry electrodes as a replacement is increasing. Accordingly, in this study, a textile-based electrode was produced with a range of electrode shapes, and areas were embroidered with conductive yarn using an embroidery technique in the clothing manufacturing process. The electrode was applied to EMG smart clothing for fitness, and the EMG signal detection performance was analyzed. The electrode shape was manufactured using the circle and wave type. The wave-type electrode was more morphologically stable than the circle-type electrode by up to 30% strain, and the electrode shape was maintained as the embroidered area increased. Skin-electrode impedance analysis confirmed that the embroidered area with conductive yarn affected the skin contact area, and the impedance decreased with increasing area. For sEMG performance analysis, the rectus femoris was selected as a target muscle, and the sEMG parameters were analyzed. The wave-type sample showed higher EMG signal strength than the circle-type. In particular, the electrode with three lines showed better performance than the fill-type electrode. These performances operated without noise, even with a commercial device. Therefore, it is expected to be applicable to the manufacture of electromyography smart clothing based on embroidered electrodes in the future. View Full-Text
Keywords: textile electrode; embroidery; surface electromyography; bio-signal; smart clothing textile electrode; embroidery; surface electromyography; bio-signal; smart clothing
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MDPI and ACS Style

Kim, H.; Kim, S.; Lim, D.; Jeong, W. Development and Characterization of Embroidery-Based Textile Electrodes for Surface EMG Detection. Sensors 2022, 22, 4746. https://doi.org/10.3390/s22134746

AMA Style

Kim H, Kim S, Lim D, Jeong W. Development and Characterization of Embroidery-Based Textile Electrodes for Surface EMG Detection. Sensors. 2022; 22(13):4746. https://doi.org/10.3390/s22134746

Chicago/Turabian Style

Kim, Hyelim, Siyeon Kim, Daeyoung Lim, and Wonyoung Jeong. 2022. "Development and Characterization of Embroidery-Based Textile Electrodes for Surface EMG Detection" Sensors 22, no. 13: 4746. https://doi.org/10.3390/s22134746

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