Labview Time Delay

[Nestor123]

 Hi, I have a question,

Using Labview, how can I design a block diagram that makes an output turn on when the output voltage of a sensor is greater than 5 and then it have to be off after 5 seconds?

Thanks for the help

[BeCeGa]

Hi Nestor you can post your questions in Spanish in the Spanish forums. Here there are several things but basically you have to have a comparison that will turn true when the voltage of your sensor is higher than 5V, when this happens you can reset an elapsed time function configured to maintain the exit for 5 seconds.

Do you want it only stays 5 seconds on even if the  voltage goes down, or you want it to go 5 seconds on even if it stays over that threshold?

This link has a 6 hours tutorial that might be useful:

http://digital.ni.com/worldwide/mexico.nsf/aa700c70642cd17786256f8c00521a2e/6224ee1564f4688786256ed6...

 

Best regards

[mosquito]

could you please translate the VI into English?

TQ

[John_P1]

My Spanish is pretty weak but I was able to figure out most of it from the context:

I hope that helps!

[mosquito]

could you please attach the VI in the Labview format because we are not able to found some of the VI since we are not very familiar with the software..

Tq

[John_P1]

The code is actually posted as a VI Snippet and should be usable in LV 2010 (Benjamin's code is saved for LV 2009).

If you are using one of these versions of LabVIEW, you can save the .png to your local machine, then simply drag it into the LabVIEW block diagram.  If you're interested, there is also a user-created plugin that will make it easier to drag the snippet to LabVIEW directly from a browser.

If you're on a previous version of LabVIEW, let us know and the code can be saved back to the necessary version.

Best Regards,

[mosquito]

sorry, we are using LABVIEW 8.6 version

[John_P1]

I've attached the VI saved for LV 8.6

[mosquito]

ok, tq very much

[nasser2]

Hi There,

I have in my power system network 2 voltages. When the first voltage goes down from 2 volts to zero , the second voltage at the output goes from 12V to zero BUT after a delay time dt. I want to display that delay time dt using the Labview between these two voltages. I used a DAQ assistant and i can see both voltages on my waveform chart. it is very fast response. I am expecting to get 35ms.

Thanks.