TY - GEN
T1 - Compact electrotactile stimulation and EMG acquisition system with embedded blanking of stimulation artifacts
AU - Strbac, Matija
AU - Isakovic, Milica
AU - Malesevic, Jovana
AU - Keller, Thiery
AU - Ilic, Vojin
AU - Jorgovanovic, Nikola
AU - Dosen, Strahinja
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/11
Y1 - 2019/11
N2 - We present a miniaturized closed-loop system for myoelectric control and electrotactile feedback in upper limb prostheses. The system integrates an electrotactile stimulator, which allows synchronous and asynchronous distribution of stimulation pulses, and an acquisition system for the simultaneous recording of multichannel EMG. The stimulator generates biphasic, current controlled pulses (amplitude: 0-5 mA; duration: 50-500 us; frequency: 1-100 Hz), which are routed by a demultiplexing circuitry to any of the 16 output channels. The acquisition system can be configured to record 8 bipolar or 16 monopolar EMG channels with a sampling frequency in the range from 500 Hz to 2 kHz. Embedded firmware incorporates direct calculation of ARV or RMS in the defined time window, as well as direct blanking of recording channels for the duration of the stimulation pulse artifact. Based on initial tests in a simple experimental setup we can determine that the developed system and proposed blanking algorithm can be used to record EMG signals during simultaneous delivery of electrical stimulation in challenging conditions (e.g., close electrode placement, high stimulation intensity).
AB - We present a miniaturized closed-loop system for myoelectric control and electrotactile feedback in upper limb prostheses. The system integrates an electrotactile stimulator, which allows synchronous and asynchronous distribution of stimulation pulses, and an acquisition system for the simultaneous recording of multichannel EMG. The stimulator generates biphasic, current controlled pulses (amplitude: 0-5 mA; duration: 50-500 us; frequency: 1-100 Hz), which are routed by a demultiplexing circuitry to any of the 16 output channels. The acquisition system can be configured to record 8 bipolar or 16 monopolar EMG channels with a sampling frequency in the range from 500 Hz to 2 kHz. Embedded firmware incorporates direct calculation of ARV or RMS in the defined time window, as well as direct blanking of recording channels for the duration of the stimulation pulse artifact. Based on initial tests in a simple experimental setup we can determine that the developed system and proposed blanking algorithm can be used to record EMG signals during simultaneous delivery of electrical stimulation in challenging conditions (e.g., close electrode placement, high stimulation intensity).
KW - Blanking
KW - Closed-loop control
KW - Electrical stimulation
KW - EMG
KW - Feedback
UR - https://www.scopus.com/pages/publications/85079182040
U2 - 10.1109/ICECS46596.2019.8965115
DO - 10.1109/ICECS46596.2019.8965115
M3 - Conference contribution
AN - SCOPUS:85079182040
T3 - 2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
SP - 863
EP - 866
BT - 2019 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 26th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2019
Y2 - 27 November 2019 through 29 November 2019
ER -