Add calendar to QMH example of intermittent sampling

I've seen lab have used for some time but have never used any of the more complex architectures.

My project at the moment is a slightly modified version of the example "continuous data acquisition and logging (daqmx)" which comes with labview.

I have a PCI-6115 I use to sample the signals of acoustic emission to 10MS/s the problem I face is that I need to run tests for an hour or more, of course I can't be sampling for an hour at a sampling rate.

All I need to do is sample for 10 ms every 20 seconds. I know this is an easy problem, but I get an error with the acquisition when I try using the wait function and I fear that it is not a sufficiently eloquent solution.

Assume that the QMH can reply to a message to take samples taking 10ms of samples and "do something" with it.  In the process of 'something', it can generate other Messages to the message handler.  You would need another loop, perhaps, which simply generates a message taking samples every 20 seconds, and who should manage the situation you describe.  The only problem is to control the loop with the 20 second wait, but I'm sure you can find ways to manage that (maybe he could be executed in the case of timeout of an event loop, for example...)

Bob Schor

Tags: NI Software

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