How to find two pulses

[nitaro205]

Hola a todos!

Estoy trabajando con un transductor de ultrasonido para medir el grosor de algún material.Adjunte la imagen de la señal cuando use el transductor.

Estoy interesado en las señales (pulso) dentro del cuadro naranja.Después de recibir esta señal, aplicar una HT (Transformación de Hilbert) para obtener la señal de la imagen 2.

Sinceramente, no tengo mucha idea de cómo proceder. Pense en el detector de picos, pero como puede ver, entre el primer pulso y el segundo hay varios picos.para compararlo con el resto.

Me podrias ayudar

[pauldavey]

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@nitaro205 wrote:

Hola a todos!

I am working with an ultrasound transducer to measure the thickness of some material. Attach the image of the signal when using the transducer.

I am interested in the signals (pulse) inside the orange box. After receiving this signal, apply an HT (Hilbert Transformation) to get the signal from image 2.

Honestly, I don't have much idea how to proceed. Think of the peak detector, but as you can see, there are several peaks between the first pulse and the second one, to compare it with the rest.

Might you help me

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How would you approach this task if you were doing it manually? You might decide to skip over any peaks that were "too soon" after the first peak. I think if you can do this task yourself (and take note of your thought process and decision making) then you can write the corresponding LabVIEW code.

[nitaro205]

How would you approach this task if you were doing it manually?

  When I do it manually I use the cursors in the graph but now I need to do it automatically. I did not work with LabVIEW before, that's the reason why I would apreciate some help.

[GerdW]

Hi nitaro,

I did not work with LabVIEW before, that's the reason why I would apreciate some help.

Then you surely noticed the "Training resources" in the header of the LabVIEW board?

How would you approach this task if you were doing it manually?

Cut the signal at time~=500, keep the samples after the cut.

Use a PeakDetector to find your two pulses…