Hi ! It is my first "complex" program which should help me analyze electric signal. Im aware of that i made it with bad practics and it jhave a lot of mistakes ;/ So any criticism will be more than welcome. Referring to the problem. When the signal is read, it does not detect any further imupls after first one. As I noted in the picture and divided, it should detect 4 pulses, each of them consists of pulse cycle time (duration and pause time ) . So table shoud have filles 4 rows.I can detect only one Ipeak (probably the first one) during the program's operation, and the appropriate times. The rest of the pulses are not detected.I thought it might be issue of setting the signal detection paramaters, but I could not get the right parameters. Now I came up with the idea of splitting the signal into 4 parts (the signal is in .lvm format) and loading it, but unfortunately I do not know how to implement it and whether this method would work.Does anyone have any ideas how to detect the remaining imupls? When i tested my program with other signal which sould be " ideal". Progam detected all impulses and and he behaved as i wanted.

OK - Your file contains two signals. Channel 0 is a noisy signal with multiple levels, Channel 1 is mainly zero overlaid with some noise. Forget about Channel 1 you won't get any valuable results out of it. Channel 1 is ambivalent since it clearly shows three more or less stationary levels. The error message you get when running analysis with default parameters is: ----------------------------------------- Possible reason(s):Analysis: The waveform did not cross the mid reference level enough times to perform this measurement. Check the signal length, reference levels, and ref level units. ------------------------------------------ What the error message tells you is that you need to help the measurement VI by telling it what you are looking for (which of the many pulses are the ones you want to analyze). To do so I selected the absolute reference levels with low/medium/high levels of resp. 4, 5 and 7 volts. These values fit all the 'wide' pulses that I assume you are interested in. See attached VI for more details. I am aware that with a signal as 'ugly' not all the pulses may be detected correctly, but it's up to you to fine tune the parameters and/or clean up your signal (filtering) before you analyze it. Analysis can do a lot, just not miracles. Good luck!

LabVIEW

Signal detection

Solved!

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Really thank you for your help.

You explained a lot of things to me. Now i need to work with that informations which you gave me.

I will write herre if there any bigger problems occur, ok ?
For that moment once again thank you 🙂

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LabVIEW

Signal detection

Re: Signal detection