How to 'play' signals recorded in signalexpress?

[tvdb]

I've searched this forum but did not find anything related to this.

In signalexpress I recorded a signal from EMG sensors attached to my biceps muscle. I can open and view the recorded signal in Labview, but is it also possible to use this signal (like a generator that generates the recorded signal over and over) as a source in Labview?

[Harold_Timmis]

Your question is a little unclear, but from what I can tell if you want to keep reading in the same value you could store the value you retrieve in an array and than send that array into your graph/chart over and over again...

[tvdb]

I'll try to explain it a bit better.

 I use EMG-sensors from Delsys to read EMG signals from muscle activity during knee flexion. This signal in its raw form (voltage) is practically unusuable so it needs lots of filtering,rectifying,etc. I have to use these signals to control a BLDC motor (torque & speed control). The problem is that I can only use the sensors when I'm at school, and not when I am at home (where I do most of the programming/tests). 

So i can only test my circuits I made in Labview when I'm at school.

My idea was to record the raw signal coming from the EMG sensors in Signalexpress. I thought it was then possible to load these recorded signals in Labview and use them as if it was a regular sine/block/triangle/.. generator (for example), but then instead of generating a sine/block/triangle it would generate the EMG signals I recorded at school. That way it is possible to use recorded EMG signals at home so I don't have to go to school every time to test my circuit.

So you mean that I can loop the recorded signal and watch them in a graph? I can do that in Labview but then again, is it possible to use this signal as a voltage source for my circuit?

I hope this make things a bit more clear.

[tvdb]

How to 'use' signals recorded in signalexpress would have been a better title for this thread

[Harold_Timmis]

I don't think you can store data in the signal express you can store the data in another file or in an array and play it back to what ever indecator you are using

[Michiel_H]

Hi tvdb

If you record your signal to a LVM or TDMS file from signal express, you should easily be able to reuse it from either Signal express (only LVM) or Labview.

From signal express, you can use the step 'Load from LVM' to load the file. Afterwards, you have the signal available in signal express as any other signal.

From Labview, you can use the read from measurement file express VI. From this you will have a waveform available which you can then use further on to use inside Labview. E.g. you can cycle through the waveform in a loop by selecting parts of the waveform and writing them to the buffer of your DAQ card.