Design and Experimental Research of Synchronous Acquisition System of EMG and Blood Oxygen Signal.
10.3969/j.issn.1671-7104.2023.01.009
- Author:
Mengjie ZANG
1
;
Lidong XING
1
;
Zhiyu QIAN
1
;
Liuye YAO
1
Author Information
1. College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016.
- Publication Type:Journal Article
- Keywords:
feature parameter calculation;
muscle fatigue;
near infrared spectroscopy technology;
surface EMG signal
- MeSH:
Muscle, Skeletal;
Oxygen;
Electromyography;
Muscle Fatigue/physiology*;
Computers
- From:
Chinese Journal of Medical Instrumentation
2023;47(1):54-60
- CountryChina
- Language:Chinese
-
Abstract:
In this study, a surface electromyography (sEMG) and blood oxygen signal real-time monitoring system is designed to explore the changes of physiological signals during muscle fatigue, so as to detect muscle fatigue. The analysis method of sEMG and the principle of blood oxygen detection are respectively introduced, and the system scheme is expounded. The hardware part of the system takes STM32 as the core. Conditioning module composition; blood oxygen signal acquisition is based on near infrared spectroscopy (NIRS), specifically including light source, light source driving, photoelectric conversion, signal conditioning and other modules. The system software part is based on the real-time uC/OS-III software system. The characteristic parameters of sEMG were extracted by isometric contraction local muscle fatigue experiment; the relative changes of oxyhemoglobin (HbO2) and deoxyhemoglobin (Hb) were calculated in the forearm blocking experiment, thereby verifying that the system collects two signals effectiveness.
