Design of a sEMG Signal Acquisition Instrument for Physical Rehabilitation Training

The sEMG signal can directly reflect a variety of information about the activity of specific muscle and nerve. By extracting and studying the characteristics of sEMG signal, the body movements, diagnosis of muscle disease and medical rehabilitation can be effectively identified. Based on these features, a sEMG signal acquisition instrument was designed for body rehabilitation training. The low-pass filter circuit and signal acquisition circuit were designed by ADS1294 physiological signal processing chip, and the acquisition of sEMG signal from 1Hz ~ 500Hz was completed. In order to read and send signals, the software based STM32 master control circuit was designed. The test results show that the SEMG signal acquisition device can collect real-time data of 4-channel EMG signal, and accurately reflect the release of sEMG signal. Therefore, it has great real-time and reliability.