Collect and display data from several workstations

Currently, the data in the CSV format locally on several workstations running Labview and the format of the recorded data is the same for each workstation. Data are recorded roughly every 2 minutes at each station and at different times.

Computers of these stations are connected network but no saves a copy of their files CSV to the server that I know is not ideal, but a part of memory original.  What is now there that a computer on the network brings together these data by workstations and then the poster showing trends in workstations etc. in graphic format and possibly Excel.

What I'm looking for is some advice on the best way forward.

I looked at shared variables as a possible solution, but it is work stations send their respective data to the 'central' PC or this PC "questions" workstations that seems inefficient.

Another thought was using Active X workstations to write in an Excel file running on the "central" PC

Finally thought that workstations have record their findings to a server and then 'central' PC to access that data, it brings together and then displays the results combined.

There are several things that remains to be clarified.

  • All LabVIEW programs, individual data record data in the same format and the same number of data points?
  • Record all programs of LabVIEW at exactly the samerate?
  • Are all data on a be saved in a single file of the Machine, or each reading (at intervals of 2 minutes) in a separate file?
  • You are trying to combine data from different machines such that it is collected or after the entire collection was done, and all files have been written?
  • Another that the timestamp of the data file, is there a "time stamp" in (all) the individual data files?
  • If you assume that the data of different machines are more synchronized, you have in mind a way to combine the different readings of the time?  What happens if they are sufficiently different that, say, the Machine has 20 readings more (because it started much earlier) than other PCs?
  • If the machines are not saving at the same rate, how will handle you that?

A single method, you might consider is to write a program that works on any network connected PC, including a no participate in the recording of data.  For simplicity, assume that each machine "participatant" starts at around the same time, saves exactly at the same rate, written a single data file and has already closed.  If the program "Combining" knows where all data files (because he knows the name of each machine and the location of the file on each machine), it can open all the files, collect all the data and treat it but want to (including a 'combined Excel workbook"writing with a spreadsheet separate for each PC, or combining them all on one sheet).  Just decide what you want to do in the context of the issues raised above.

Bob Schor

Tags: NI Software

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