integration problem

[Eli Hafitz]

Hi everyone, this is probly an easy question, but I need to know how to intergrate my data. It is for a wireless accelerometer. Ive attached the VI, but I cant seem to get the intergration right. It was built in LV 8.2 with some functions that might not appear for you. The signal output is a single number, orange wire. 

[altenbach]

Since you are only gettting a single point per iteration, you need to use the ptbypt version.

What determines the loop rate of your while loop? 

[Eli Hafitz]

it is to loop until i tell it to stop

[altenbach]

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@Eli Hafitz wrote:

it is to loop until i tell it to stop

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... but how fast?

[Eli Hafitz]

Im not sure, how do i determine the loop speed?

[altenbach]

Since you did not include the subVI, there is no way to tell by looking at the code. How long does it take to read the sensor?

"Determine" is a somewhat fuzzy word in this context:

• You can measure the loop speed by subtracting successive tick counts using a feedback node.
• You can define the loop speed by placing a defined wait inside the loop. (e.g. 10ms or 100ms).

Typically, a toplevel user interface loop like this needs a small wait so the loop spins at a defined rate. Without a wait, the program speed will depend significantly on the computer speed and is thus not predictable. If somebody would run in in a few years on a 100x faster computer, it will run 100x faster than today. Without a wait, the program also uses all CPU it can get, slowing donw any other prcesses that need to run once in a while.