EMG Signal Analysis

[kapillohia]

http://sine.ni.com/apps/utf8/niae_asc.main

I have a query regarding amplification , filtering of the EMG signal directly connected to PCI 6221 DAQ without any external signal processing tool. Also EMG ranges upto 15 mv and usable upto 300 Hz. More you can refer the above link

[tnek]

Hi kapillohia,

It looks like you were working on this same issue in another forum entitled "eeg block diagram using labview". I would recommend continuing working on this issue there since it looks like you were making progress. The link you posted was to the Request Support page. If you have Standard Service Program (SSP) membership, you should be able to call or email an Applications Engineer who will work with you personally on this issue.

Regards,
Kent
Applications Engineer

[kapillohia]

Hello sir,

the above wordings are said by NI engineer so i performed this action. pls provide me help on this forum regarding building a EMG force VI. i doont have any training subscription.

Message Edited by kapillohia on 03-26-2008 09:47 AM

[kapillohia]

The below one was the message.... so i started this new forum.. pls help me and provide me a vi of EMG force

Hi Kapillohia,

To get in touch with us directly, please follow this link to generate a service request:

Request Support
http://sine.ni.com/apps/utf8/niae_asc.main

You can reference a link to this forum in your request as well to avoid having to reexplain things in your request.

 

Regards,
John B.
National Instruments

[NI-Bongo]

Hi kapillohia,

Sorry for the confusion.  I was suggesting you start a service request via email or phone, but you can only do this if you have Standard Service Program (SSP) membership.  I suggested this because you requested my email address for personal support, which I cannot provide over the forum.  We can continue to help you here or you can contact us for more information on becoming a Standard Service Program member.  Sorry again about the confusion.

[tnek]

Hi kapillohia,

To address your question on acquiring an EMG signal, there are a few things we need to take into consideration.

On the hardware side, I understand you have a PCI-6221. As John mentioned before, you will be able to feed the signal straight into an analog channel and see data. However, the resolution will be better if you did some signal conditioning and amplified the signal before connecting to the DAQ card. For more information on this process, you can look around this article.

In LabVIEW, you will use the DAQmx application programming interface (API) to communicate with the hardware to get your data. John walked you through on how to use the DAQ Assistant which is the DAQmx express function. There are many more examples in the LabVIEW Example Finder which can be accessed from the Help menu. In there, you can find relevant examples browsing by task under Hardware Input and Output » DAQmx » Functions » Analog Measurements » Voltage.

Feel free to look at a this other link to get an idea of how a similar application may be developed. Let me know if you have any specific questions.

Regards,
Kent
Applications Engineer

[kapillohia]

Hello SIr

Thank you very much for the valuable articles.

Sir i am mainly working on EMG signal acquisition. Although ECG signal are more or less similar but if there is a tutorial full on EMG signals, please provide me that one.

Also during my search on internet on EMG signal acqusition, i came acrss an articl in which i t is mentioned that there is a VI for EMG acqusition named"EMG Force.vi" from NI itself. Sir i am not able to find that in examples, sir please provide me that VI.

Actually the main problem with me is that, i created this forum late and now i have to complete my project in next week itself, so i am running short of time. Please sir i am heartly thankful to you if you provide that VI to me.

Thank you

Kapil Lohia

I am attaching the document where i read about the readymade EMG Force VI.

Pls look in section 3.1. that is my question.

[Dennis_Knutson]

Nowhere in that document does it say that there is such a VI available from NI. It refers to a VI available under the course homepage and I would assume that it is a course available at the Technical University of Denmark (look at the title page).

The actual VI is shown in appendix 9.3 and you could simply copy it. The problem is that the DAQ VIs used are traditional DAQ and you probably want to to using DAQmx.

Why don't you at least try yourself to create a data acquistiion program? You have the DAQ Assistant to help you get started. Connect up the signals, configure the DAQ Assistant for sample rate and number of samples and see what you get.

The forum is primarily to help people solve problems - not do the work for you (especially when it is schoolwork). when you write a VI and get stuck, then post what you've done with a detailed description of your problem.

[kapillohia]

i am also not saying that you do my work. and  to correct you it is not any school work, i have to just submit it for a technical Seminar.

its not a small school work as you are seeing only a small part of the project, its not the complete project, it has many things to do.

Also i never said that do work for me. i am just requesting you to provide. Also in the document i sent, the course homepage is the NI course page i thought, thats y attached that document.

look at the reply of the above two sirs (Kent and john). They speakes so politely and are very helpful. in every post they are helping me. so i just requested him to provide and this is just to save my time, i also have to modify a readymade VI, so i am just asking it for reference. not for just copying it directly.

Also it is my first time to work with Labview, so i cant say i am expert in this days.

Please if you cant provide me its ok but pls dont say like that "We are not here to do your school work".

Thank You and sorry if i asked something foolish.

But i always learned that "Questions are always right, may be answers are not"

[Dennis_Knutson]

Excuse me if I misunderstood what you want but your last couple of posts have asked 'please provide me with the VI' and not please help me get this VI I wrote to work. Nor do I understand why you would think a document from a university in Denmark is NI course work. You have gotten very good advice from Kent and John and all that I am saying it should be sufficient to get you started with your own code. You can also search the forum for EEG and ECG and you will find some code examples that others have posted when they have gotten stuck.