Curve fit analog signal

[oelias23]

I am trying to measure the time between two pulses given by two pressure transducers.

The way I plan to do it is by curve fitting the data of both transducers separately and get a threshold pressure and measure the time difference of both instances.

I have attached a print screen of the front panel after the experiment (curvefitt), and the VI and sub VI.

I am open to other ideas too but this would be best for me. I am not too familiar with curve fitting in labview.

Thx

[SMeserve]

Hi oelias,

Curve fitting isn't really the right choice for data that looks like this.  You may want to determine what the average is of the first set of values, then the first value that cross a determined threshold from that average, that's the trigger.  I don't see how curve fitting would help this application.