How TFF accelorometer myRIO readings?

Hello guys,.

I'm trying to FFT myRIO 1900 internal accelerometer readings, in order to study the spectrum in the frequency domain.

I'm a bit new to this so I don't know how to do but here is what I know (but I still don't know how to do it).

* I need to collect samples with a certain axis myrio Z for example sampling rate.

* Store the samples in an array.

* FFTing table of samples.

* Loop for updating the values.

I also try to reach a figure that is very close to that if I logged signal simulation with FFT then a graph to have an output like this.

Anyway, here's the project that I work with.

And this is the meaning less graphic that I get.

Please help me to realize what I am not.

Thanks in advance.

Michel,

You can try something like this:

This code will be 100 samples by while loop cycle at a sampling frequency of 1000 Hz (1/loop, loop period period = 1 ms), to format data in a wave form and send this waveform for spectral measurements VI.

Quick Edit: attachment VI

Tags: NI Software

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