Datalogger with options to recover the subset of the log based on the time

I want to thank this forum for tips so far to fill my LabVIEW software.

I have a challenge for data logging. I'm supposed to sign about 30 settings every 5 seconds. Some of these parameters are digital (ON / OFF), some are the values of the speed (RPM) and others, the expression of a percentage (%). It should be possible in the future to do a histogram or graph bar certain parameters, for a specific period range field (say the last 5 minutes in a given day). So, indeed, do a checkout from a segment of the total log file.

My challenge is if I use the text file, as that of the attached VI, can provide the functionality of the data recovery (while the VI is running) in the log file, based on a certain time interval (i.e. recover a section of the log file based on a certain range of time, on demand)?

The format of the text file is close to what I'm asking, because it lists the time n a column and the other parameters on other columns to enable the next generation of histogram.

Thank you, friends.

Hey Maxidivine

I made a parallel loop in your program that won't ask you a file to search for and request to start and finish datestamp.
These stamps must be present in the text file before you click on the button Get Data From File.

The data buffers are accurate to one second, but if I understand correctly you connect every 5 seconds and the program will be
Auto extend the search to find the next available date corresponding.

If you set the time of acquisition to 8 seconds, the program will look for the available timestamp in the file text 16 seconds after the entry is necessary, because there is not a date stamp in the file for each second.

I would like to know if this helps.

Philippe

Tags: NI Software

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