Periodic saving

[oscarc]

Hi,

I have a project where I am using a daq to measure acceleration. I want to measure high frequencies ~30kHz, and I use a producer/consumer loop to do the measuring in the producer loop, and the fft:s and saving part in the consumer loop. I will let my system run continously, but I want to save averaged data at specific times (with a timestamp on), for certain periods:

saving saving saving etc.

_________-------_________-------_________-------____

t1 t2 --->t

Currently I was thinking of using t1 = 20s and t2 = 10s, but I will want to control them later. I was wondering about what method to use, so that the consumer loop will still be processing the averaging and saving part. I guess I can use two time elapsed vi:s which control a case structure in which I place the saving part, but it would be messy. I was wondering if the timed loop is good for controlling this, but it seems not..

Many thanks for your help!

Oscar

[Jaromir Ludwin]

Why don't you make your fft loop producer for the third loop where saving would be placed.

Than in this third saving loop (consumer) you can apply timing with no influence on your analyzing loop.

Jaromir