peak detection

[plpablo]

Hello all,

I would like to find peaks in my signal but I am looking only for big peaks. I am trying to use peak detector but threshold in this  vi is from 0 and that is not working for me because my signal looks like in the picture ( red signal ) . As we can see there are around 10 peaks but tool found 1236. 

So question is how to find only big ones. 

Best regards 

[JICR]

\vi.lib\measure\mamon.llb\Waveform Peak Detection for 1 Chan.vi

[plpablo]

how to find it ? 

[GerdW]

Hi pablo,

when you need help with your VI and your data you should attach your VI and your data!

(You know we cannot debug images with LabVIEW!)

And please define "only big ones" by providing an example waveform together with your expected result…

[plpablo]

Hi GerdW

I am using hardware input so i don't know if you can debug application. 

I am attaching my vi and picture.

Best regards 

[GerdW]

Hi pablo,

we also need the data shown in your images!

Run your VI until you see nice plots in your graph. Then stop the VI.

Now call edit menu -> set all values to default.

Save the VI, attach it again…

[plpablo]

Data will be different for every run but for debugging purposes we can use this one 

[GerdW · Accepted solution]

Hi pablo,

you also should try to get rid of (unneeded) ExpressVIs!

Use IndexArray instead of SplitSignal.

Use BuildArray instead of ToDDT and JoinSignal!

See this:

[plpablo]

Can You attach VI ? 

[GerdW]

No, didn't save…

It's just the PeakDetector, applied on your data.