• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 46 subscribers
  • Views 482 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

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.

ADS1298: Unstable wave-forms while plotting ECG, when connected to a person.

ram villa
Prodigy 10 points
Part Number: ADS1298
Other Parts Discussed in Thread: MSP430F5659

Hi , we are trying to build 12 lead ECG device using( MSP430F5659 controller as interface to ADS1298PAG). when we tried to plot the recorded data from patient , the wave forms are unstable. But when we record the data from ECG simulator we are getting a fine ECG.
I like to know what is the main cause of problem?
do we need extra noise filtering circuit (or)any suggestions would be helpful.

  • 0
    TI__Genius 11550 points

    Hi Ram,

    Welcome to the E2E forum!

    It is normal to get additional noise from the real patient compare to the ECG simulator. Several factors will cause additional noise and baseline wander shown in some of your plots. Some of these are power line noise coupling from the body, the type of electrode use (wet/dry), the electrode's placement, and if the patient moves during the ECG acquisition. The baseline wandering is typically due to changing impedance in the signal chain. Ensuring secure electrode connections, making sure that the patient does not move, and optimizing the RLD drive will help improve baseline wander. Some digital post-processing of the ECG data can also enhance the quality of the ECG signals.

    Thanks.

    -TC