ECG - R wave detection

[-ammy-]

Hello, I'm a beginner in working with LabVIEW. Can someone please advise me how to detect the R wave in the ECG signal (for example: physionet_e0119.dat). There I found an example (example.vi) in HELP. But I don´t know how to implement it into my program. Please, can you check my program and help me to find the error??? Thank you very much! Zuzana

[Zody]

Hello,

Are you sure that you have ECG values in the dat file?

Can you please double check the values you have saved there and confirm to me?

kind regards,

Ion R.

[Steve.J]

Please see our free Biomedical Starter Kit located on NI Labs here:  https://decibel.ni.com/content/docs/DOC-12646

The starter kit includes a tool for importing/converting biomedical file formats into formats compatible with native LabVIEW functions, including the MIT Physionet format (which it seems is the origin of your sample file).

Support for the Biomedical Starter Kit is provided on our Biomedical User Group - please join and participate.

Thanks,

Steve

[-ammy-]

Hello Ion R.,

Thank you for your answer. I am sure that the values ​​in file are amplitudes of ECG signal. This file physionet_e0119.dat is downloaded from http://www.physionet.org/physiobank/database/edb/. I usually work with files from the database in school. As you can see the ECG signal is shown in the Graph Indicator called Originální signál. I have published here only one part of my program, the rest works without problems with this file.

                   Thank you. Kind regards, Zuzana.

[-ammy-]

Hello Steve,

Thank you for your advice. I have already installed the Biomedical Starter Kit. I tried to convert my .dat file into the MIT Physionet format, but I wasn´t able to solve my problem. I think, I have an error somewhere in my application (in wire branch or I missed a block).

                                    Thank you! Zuzana

[Steve.J]

Your file should already be in the Physionet format (or MIT-BIH database) when it is downloaded - you want to convert from Physionet/MIT-BIH to the LabVIEW "tdms" data file format which can be read directly into LabVIEW using the TDMS file VIs.

See this article: https://decibel.ni.com/content/docs/DOC-4758