Electrocardiogram

How it works

• The electrodes from BIOPAC attach to the body and reads the electrical potential between the heart and elsewhere on the torso.

• The signal we want is much smaller relative to the noise of the outside world. So, we first pass the signal through a low pass filter.

  • This eliminates frequencies that are higher than the ones we're looking for.

• The signal is then passed through a high pass filter to further filter out noisiness. 

• After the heartbeat has been separated from noises, we read the signal in Matlab and further clear noise through Fourier Transform.

  • Using the Fourier Transform mathematical model, we can utilize Matlab code to clean the signal even more, through software.

• The result can then be translated onto a live graph.