Hi all! I am a new LabView user (previously a VEE user) and am doing
something new to me, data acquisition.
I was wondering what other people have done to display and visually
analyze large amounts of data, either within LabView or using some other
application. Here is my data acquisition scenario:
1) I am collecting digitized voltages on approximately 50 channels at
1kS/s, reading it in blocks of 100 samples and writing to one set of ASCII
files in tab separated columns (one column is one data channel) and time
stamping the block read time
2) I am collecting accelerometer data on about 5 channels read at 10kS/s,
also reading in blocks of 100 samples and writing to a different set of
ASCII files in tab separated columns as above
3) I am also collecting thermocouple data on a few channels (<5) read
at 1S/s, stored in a third set of ASCII files in tab separated columns
with each reading timestamped
4) As you've likely noticed, items #1 & #2 grow rather quickly, so
those files are closed out at 64,000 samples and new data files are opened
What I'd like to do, is to be able to select several channels of overlayed
data to view at a time, closely time aligned (I know there will be some
skew and that is acceptable) and be able to scroll through the data
looking for "events" (of unknown characteristics) centered around the time
of UUT failures. I'll also have to be able to extract data from
newer/older versions of data files due to closing out data files when they
reach a certain size.
Any ideas for dealing with this type of situation would be greatly
appreciated! (What a way to learn LabView!)
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