Title :
Instrumentation of a portable EMG sensor in a single PCB for human motion pattern detection
Author :
Narayan, Amrit ; Dasgupta, Hirak ; Pal, Himangshu
Author_Institution :
Appl. Electron. & Instrum. Dept., Sikkim Manipal Univ., Majitar, India
Abstract :
The objective of this work is to make a Surface Electromyography (EMG) signal detection sensor to test and analyze human motion pattern. EMG signal has a very small amplitude level and a frequency range of 20 Hz to 200 Hz. In order to realize the sensor, a circuit and its single layer PCB has been designed to amplify and filter the differential potential between Ag/AgCl electrodes at different points. After that the signal has been stored in computer using NI ELVIS II (DAQ) and LABVIEW at a sampling rate of 1000Hz. Then the signal has been used to calculate the stride length of a particular foot by a single threshold comparison method. The ultimate result shows that the calculated and actual stride length matches in 89% of the cases.
Keywords :
band-pass filters; electromyography; gait analysis; medical signal detection; printed circuits; Ag-AgCl electrodes; EMG signal; LABVIEW; NI ELVIS II; differential potential; filter; frequency 20 Hz to 200 Hz; human motion pattern detection; portable EMG sensor; single PCB; single layer PCB; single threshold comparison method; stride length; surface electromyography signal detection sensor; Band-pass filters; Electrodes; Electromyography; Instruments; Layout; Muscles; Sensors; Band pass filter; Instrumentation Amplifier; Printed Circuit Board (PCB); Signal conditioning Circuit;
Conference_Titel :
Physics and Technology of Sensors (ISPTS), 2015 2nd International Symposium on
Conference_Location :
Pune
DOI :
10.1109/ISPTS.2015.7220069
