Role of accelerometer in minimizing noise from motion in portable cardiac monitor using AD8232.

Hi StaChi ,

By integrating an accelerometer into the portable cardiac monitor, the system can monitor any unnecessary motion on the device especially those introduced by the patient. One can set up the accelerometer to detect any motion before measurement which could make more accurate data minimizing the noise coming from the motion of the patient. Measurement of heart rate will not occur unless the motion detected by the accelerometer is below a certain threshold value. It minimizes the noise in such a way that it prevents AD8232 from measuring the heart rate when the accelerometer detects a lot of motion.  Hope this helps.

Regards,
Gilbeys

Thanks GLADION . Would you also have any suggestions on how to use the accelerometer to minimize noise in cases where the wearer is expected to be in near constant motion for extended periods of time, like while running?

Hi StaChi ,

Good day. You can use the x,y and z data to determine the motion of the wearer. Usually, a constant motion might cause a sudden peak in the measurement since the noise is added to the actual measurement. You can use signal processing to determine this peak and filter this out to give you the actual measurement. Thank you.

Regards,
Gilbeys

Hello,

It appears that the above question has been answered already so I'm temporarily closing this thread. In case there are additional questions, feel free to reply to this thread. Thank you!

Best regards,
Paul