• State
  • Locked Locked
  • Replies 2 replies
  • Subscribers 98 subscribers
  • Views 593 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

100 Hz noise spike in ECG

Talha Saleem
Intellectual 455 points

hi,

    I am doing project in ECG acquisition in C5505.  I have the good results now.  When I did its PSD in Matlab to get the insight I noticed a spike at 100 Hz. Why there a spike in the first place although I have put a notch at 100 Hz and cutoff at 150 Hz. Below is the picture for my results. .

Please advice... Thanks...

  • 0
    TI__Expert 6861 points

    Can you give a little more details about your hardware set-up and configuration?

    Regards

    Wen

  • 0 in reply to Wen Li
    Intellectual 455 points

    hi Wen,

                  I am using  C5505 EVM with ADS 1258 as its daughter board for ECG purposes. First with out any changes I noticed that there is a spike at 100 Hz so I  redesigned the FIR filter with notch at 100 Hz. But it is still there although its power is decreased very much. I just wanted to know what would be the reason of that.

    Is it from the electric bulbs or equipments etc... Please advice... Thanks.