Freeze and Frequency Analysis

[Gregory88]

I ment 'one wave' produced by all 3 you know? Like a rms.  In your example there are still all 3 signals by themself(in one wavechart) visible. 

[Duffy2007]

Hello  Gregory88,

attached with mean.

[Gregory88]

Hey Alex,

need your help again.

- I Need to save on my PC the data i have measured

- therefore it should exist a field with "save under"

-than a new (second or third and fourth.... etc) analysis/measurement should be done

- all of them Need to be saved

-there should be a list/window where I can see and select the measurements/data

-to make a conclusion between the measurements, I want to upload the saved datas in the diagramm to see the differences between them.

It should just work for the FFT and Hüllkurvenanalyse

Do you think it´s possibile to create this?

Thank you for your help.

If something is hard to understand let me know 🙂

[Duffy2007]

Hello Gregory88,

yes, everything is possible you are the programmer, you can do it.

1. Split acquisition from the data analyse and save functions with a producer consumer architecture, which uses a queue.

2. Implement in the consumer a statemachine so you can periodically save the values.

3. With the recrusive file list.vi function you can made list of the files, then select the needed and display them in a graph.

4. The statemachine can be extended to manage all the needed functionallitis.

5. Also a event structure can be helpfull to manage the controls and Buttons.

[Gregory88]

Hi Alex,

for you it seems to be so easy 😕

1. ok i think the producer consumer architecture is a scheme like this?

http://www.ni.com/white-paper/3023/en/

2. state machine is like this?

http://www.ni.com/tutorial/7595/en/

3. where to download the recursive file list.vi

cant find it online, even not in LabVIEW

... dont know how and where to start, still in war with LabVIEW

[Duffy2007]

Hello Gregory88,

not optimized, no event structure, no error handling and many things that can be done better, but a starting point.

[Gregory88]

could you please send me the vi in LabVIEW 2015

thanks a lot

[Duffy2007]

Hello Gregory88,

[Gregory88]

Thank you Alex,

i cant move the x-axis from "alle Spannungssignale getriggert" after the measurement stoped in correlation with the "Messdauer in Sekunden". (Also mit dem Drehregler konnte ich vorher die x-Achse skallieren wenn die Messung vorbei war)

In the diagram  "Aufgezeichnete Messwerte" it´s now possible to compare the measurements with each other, but after uploading the data in the diagramm, how to get them also in the FFT/Hüllkurve to compare them there?

Is it also possible to select the files by mouse? Otherwhise it´s also fine like this.

Best regards.

[Duffy2007]

Hello Gregory88,

the state machine loop only run if the acquisition runs, additional the select of the TDMS files in a table.
I think it is also time to clean up diagram and front Panel.