A Modular, Smart, and Wearable System for High Density sEMG Detection
| Autor: | Marco Gazzoni, Alberto Botter, Giacinto Luigi Cerone |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Computer science
Movement 0206 medical engineering Biomedical Engineering Wearable computer 02 engineering and technology Body Sensors Networks Dynamic EMG HD-sEMG amplifier Modular systems Movement artefacts Smart devices Wearable sensors Body Sensors Networks Wearable Electronic Devices Robustness (computer science) Wireless Humans Modular systems Movement artefacts Signal processing Smart devices business.industry Electromyography Dynamic EMG Signal Processing Computer-Assisted Equipment Design HD-sEMG amplifier Modular design 020601 biomedical engineering Wearable sensors Electrode business Artifacts Wireless sensor network Computer hardware |
| Zdroj: | IEEE transactions on bio-medical engineering. 66(12) |
| ISSN: | 1558-2531 |
| Popis: | Objective: The use of linear or bi-dimensional electrode arrays for surface EMG detection (HD-sEMG) is gaining attention as it increases the amount and reliability of information extracted from the surface EMG. However, the complexity of the setup and the encumbrance of HD-sEMG hardware currently limits its use in dynamic conditions. The aim of this paper was to develop a miniaturized, wireless, and modular HD-sEMG acquisition system for applications requiring high portability and robustness to movement artifacts. Methods: A system with modular architecture was designed. Its core is a miniaturized 32-channel amplifier (Sensor Unit - SU) sampling at 2048 sps/ch with 16 bit resolution and wirelessly transmitting data to a PC or a mobile device. Each SU is a node of a Body Sensor Network for the synchronous signal acquisition from different muscles. Results: A prototype with two SUs was developed and tested. Each SU is small (3.4 cm × 3 cm × 1.5 cm), light (16.7 g), and can be connected directly to the electrodes; thus, avoiding the need for customary, wired setup. It allows to detect HD-sEMG signals with an average noise of 1.8 μVRMS and high performance in terms of rejection of power-line interference and motion artefacts. Tests performed on two SUs showed no data loss in a 22 m range and a ±500 μs maximum synchronization delay. Conclusions: Data collected in a wide spectrum of experimental conditions confirmed the functionality of the designed architecture and the quality of the acquired signals. Significance : By simplifying the experimental setup, reducing the hardware encumbrance, and improving signal quality during dynamic contractions, the developed system opens new perspectives in the use of HD-sEMG in applied and clinical settings. |
| Databáze: | OpenAIRE |
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