media

[enzo78]

Hello

I have a signal variable in time, that is the real wind speed, ... so I want to obtain the average value of this signal every 10 min.

Can you help me? 

[MikeS81]

Hi enzo78,

can you show your code? If you use a loop, then add a shift register to it and store your value in it. With the "Add Array Elements" function and a simple divide block, you can than calculate your average.

Mike

[enzo78]

Here is my vi

thanks

[MikeS81]

Hi enzo78,

see the attached example.

Mike

[enzo78]

Thank you

It`s good.

Bye

[enzo78]

Hi

can you give me a manual to better understand the use of shift register and the loop

Thanks

Cheers

[johnsold]

Here is a version of MikeS81's VI with an alternate calculation which does not grow the array indefinitely. It does not store all the values, only the sum and the count.

It also shows how this can be done without local variables.

Lynn

[MikeS81]

Hi enzo,

there informations in your online help. For more informations see this link http://www.ni.com/academic/lv_training/d/how_learn_lv.htm

Mike

[enzo78]

Hello

I`ve another question for you about the same VI,

The average value obtained is variable in time untill I stop the while loop, so I`ve stopped it with an elapsed time, wich stop it every 600 second. 

Now I need to take only this value and to put it into a grafh: wind speed in y axis and present time (text) in x axis.

Somebody can help me?

thanks

[enzo78]

I send my new VI