Welcome, Guest

Author Topic: Single lead ECG measurement with Olimex EKG Shield  (Read 75 times)

danvol23

  • Newbie
  • *
  • Posts: 1
  • Karma: +0/-0
Single lead ECG measurement with Olimex EKG Shield
« on: May 14, 2019, 11:28:38 AM »
Hello,

I would like to ask you about single lead ECG acquisition from Olimex EKG Shield. I would like to acquire data just between RA and LA without the reference. Instead of the reference electrode, I would like to connect it to the virtual ground made of a voltage divider between supplying voltage and ground. Is it the correct procedure? I just want to make me sure. If there is any other way to do it, please do not hesitate to tell me.

Thank you very much,
Daniel

LubOlimex

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 1906
  • Karma: +48/-2
Re: Single lead ECG measurement with Olimex EKG Shield
« Reply #1 on: May 14, 2019, 12:55:39 PM »
You always measure the potential difference between the right electrode and the left electrode - this is the essence of the design. The voltage reference is used to lower the noise, it is not a data signal, just a noise compensation.
« Last Edit: May 14, 2019, 12:59:28 PM by LubOlimex »
Technical support and documentation manager at Olimex