A PWM-Based Muscle Fatigue Detection and Recovery System

Muscle fatigue is a problem that is often encountered in daily life. To facilitate muscle fatigue detection, a pulse width modulation (PWM) and ESP8266-based fatigue detection and recovery system is introduced in this paper to help alleviate muscle fatigue. The ESP8266 is employed as the main controller and communicator, and PWM technology was employed to achieve adaptive muscle recovery. Muscle fatigue can be detected by surface electromyography (sEMG) signals and monitored in real time via a wireless network. With the help of the proposed system, human muscle fatigue status can be monitored in real-time, and the recovery vibration motor status can be optimized according to muscle activity state. Experimental results showed that the proposed system is sensitive and stable, requires minimal power, and can be of benefit to muscle fatigue monitoring and recovery.