回复： HRV Measurement to find R-R interval

[infra444]

Hi Steve,

Thanks for replying, actually I am using contactless coupled ECG which has active sensors for measurement of ECG parameters in car seat integration. I am acquring real time measurement from my data acqusition device which has a

sampling rate of 1k, and no of samples is 5k, ie I am measuring for a period of 5 seconds. I want to display Heart rate in beats/min and then find heart rate variability ie the distance between two R-R peaks and plot them.

I adopted the same method as mentioned in one of the article-- Labview for ECG signal processing,  I am not able to get heart rate correctly. Kindly have a look at my attached vi, where I have sample data and also data from a conventional ECG.

Thank you,

abi

[hgurji]

Hello,

I was wondering if you could resave and post your VI for labview 7.1  I have constructed a VI for HRV analysis, but am have quite a bit of difficulty getting a "usable" PSD from my resampled RR interval data.  I only have labview 7.1, and have read the NI article on HRV (many times).  I could really use the help.  Thanks.

-hgurji 

[Jaspal]

Hi infra444

I am using the pulse signal to analyse HRV and am ahving some issues with Power spectral density calculation.

I need to remove baseline awndering and WA detrend.vi in the advanced signal processign toolkit (which I dont have) seems to be the suggested apporach by NI.

Is there away to remove this using  standard labview function.

Have u calculated PSD in your analysis?

[ZJ.Gu]

For removing the trend, you could use a high pass filter such as Butterworth.