ECG Recording and analysis vi

[shavec]

Hi all

There seems to be a number of people around doing a bit with ECG. I know its a bit cheeky but i was wondering if any one had made a vi that can at least do beats per minuite. I dont really want to reinvent the wheel If various people have different components for ECG analysis it would be good to put them all together. I know people have used a peak detector before and then record the number of peaks over a certain period of time.

I currently have a system that is recording EMG signals from facial muscles which can also be used for recording ECG waveforms as im currently doing research.

Ceri

[viSci]

Here are a couple of links to get you started.

http://www.ni.com/academic/bme_course.htm

http://zone.ni.com/devzone/cda/tut/p/id/6349

http://zone.ni.com/devzone/cda/epd/p/id/5832

Also you might try to implement the standard Pan-Tomkins

QRS detector which is described in the attached PDF written

by Monnie Anderson from NI.Download File:post-162-1208116855.pdf

Mike Sachs

www.viScience.com

[reem]

QUOTE (shavec @ Apr 13 2008, 08:10 PM)

I currently have a system that is recording EMG signals from facial muscles which can also be used for recording ECG waveforms as im currently doing research.

Ceri

how is that possible?? since EMG is considered as noice for ECG measurement (and vise versa) , how can that system detect both ECG and EMG??

seems to be very intresting

[viSci]

If you monitor them one at a time (assuming different electrode placement) then a common EMG/ECG amplifier would work assuming you could adjust input filtering

individually for each case.

[Val Brown]

QUOTE (sachsm @ Apr 17 2008, 04:21 PM)

If you monitor them one at a time (assuming different electrode placement) then a common EMG/ECG amplifier would work assuming you could adjust input filtering

individually for each case.

...or use a JTFA based detection scheme since both have differing signals in the time-frequency domain.

[reem]

QUOTE (sachsm @ Apr 18 2008, 04:21 AM)

If you monitor them one at a time (assuming different electrode placement) then a common EMG/ECG amplifier would work assuming you could adjust input filtering individually for each case.

aha,, thats the case then,,u have used diffrent filters for each case...

i would have liked to try that system

anyway...good luck with ur project Ceri...

[shavec]

QUOTE (reem @ Apr 17 2008, 09:57 PM)

how is that possible?? since EMG is considered as noice for ECG measurement (and vise versa) , how can that system detect both ECG and EMG??

seems to be very intresting

Our project is on Temporomandibular (Jaw) disorders. So we're measuring the signals from the muscles that control the jaw. We've made our own amplier to amplifiy the signals from the electrodes so my labview program just records data from 6 channels from the amplifer through one of the DAQ cards.

It just so happens we tried putting the electrodes in the right places to measure the ECG signal and it seems to work. Some on else in my university is looking at heart sounds and needs to have the ECG signals recorded at the same time as the siganls from the stethescopes so i was interested in producing some thing that could look at the ecg siganls as well. Im using a MOTU traveller (glorified sound card) instead for this for collecting the data on to the computer.

Most of our filtering is done in matlab after we've recorded the signals for the emg system

QUOTE (sachsm @ Apr 13 2008, 08:01 PM)

Here are a couple of links to get you started.

Also you might try to implement the standard Pan-Tomkins

QRS detector which is described in the attached PDF written

by Monnie Anderson from NI.

Download File:post-162-1208116855.pdf

Mike Sachs

www.viScience.com

Thank you for your help. the articles and links have been very useful.

Ceri

[marp84]

this is realtime or just a simulation, maybe you can help me if use NI DAQ 1208FS...?

tanx