The Design of the Electromyography Sensor with the Modifying Circuit

Abstract

The project is about using the Electromyography (EMG) sensor to display the muscle movement and use connecting circuit to modify the signal from the EMG sensor. The modifying circuit connected to the EMG sensor include the amplifier circuit to amplify the signal, the filter to remove the DC offset and the high frequency noise, the rectifier for the positive swing of the signal and the envelope detector to smooth the signal. The circuit is designed according to the signal amplitude and the frequency spectrum and is simulated on the Multisim and have the output. The actual circuit is built as in the simulation and the signal is from the electrode. The output is in audiovisual and performance of the EMG sensor circuit is demonstrated by experiment. The design of the EMG in the project uses the simple component in electronic circuit with the desired output. The display of the EMG sensor in the project is audiovisual which provides the user with output format both in visual and in audio that allows hearing disability and visual disability users to use the EMG sensor.