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E-textile based modular sEMG suit for large area level of effort analysis.
Korine A Ohiri1, Connor O Pyles1, Leslie H Hamilton1
1Research and Exploratory Development Department, The Johns Hopkins Applied Physics Laboratory, Laurel, MD, 20723, USA.
Scientific Reports
|June 10, 2022
Summary
This study introduces a new e-textile surface electromyography (sEMG) suit made with conductive textiles for comfortable, reusable muscle signal monitoring. The design offers comparable signal quality to traditional electrodes, enabling easy muscle effort estimation.
Area of Science:
- Biomedical Engineering
- Materials Science
- Wearable Technology
Background:
- Surface electromyography (sEMG) is crucial for monitoring muscle activity.
- Conventional sEMG uses adhesive electrodes, which can be uncomfortable and have limited reusability.
- There is a need for integrated, comfortable, and durable sEMG solutions in athletic and clinical settings.
Purpose of the Study:
- To develop and validate a novel e-textile based sEMG suit.
- To demonstrate a facile fabrication method for rapid prototyping of wearable sensors.
- To assess the performance, comfort, and durability of the e-textile sEMG suit compared to conventional methods.
Main Methods:
- Designing an sEMG suit using stretchable conductive textiles as electrodes and interconnects within a compression garment.
- Employing laser cutting and heat-press lamination for fabrication, enabling rapid prototyping.
- Integrating electronics for signal conditioning, amplification, digitization, and processing for level-of-effort estimation.
Main Results:
- The e-textile suit demonstrated sEMG signal quality comparable to conventional adhesive electrodes.
- The materials proved robust to wear, high strain, and machine laundering.
- The suit provided improved comfort, longevity, and reusability over traditional electrodes.
- The system successfully converted raw EMG signals into level-of-effort estimations for elbow and knee joint movements.
Conclusions:
- A novel, comfortable, and reusable e-textile sEMG suit was successfully developed.
- The facile fabrication method allows for rapid prototyping in research settings.
- The e-textile approach offers a promising alternative to conventional sEMG electrodes for various electrophysiological sensing applications.
