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Assaf Baker

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    LabVIEW 2020
  • Since
    2011

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  1. Hi, i am working on a power logger tool using the NI data acquisition 4309 i am sampling voltage and current signals from a board (current on shunt resistors) - lets call those Physicals channels my task is to calculate some virtual channels on the streamed data and present it on graph and log to file e.g. Physical channels: Vcore, Icore1, Icore2,VDDQ, IDDQ virtual channels: Icore_tot = (Icore1 +icore2) Pcore = Vcore * Icore_tot, PDDQ = VDDQ *IDDQ, Ptot = Pcore + PDDQ 1) i have a configuration INI file that sets the channels to be sampled and virtual channel equations 2) i would like to aligine and add the Virtual chnnels to be displayed on Graph and loged my current solution is memory/resource hungry i take each line of the data i sample and calculate the virtual channels with the Equation node (see image) need help to do it right load and parse the equations from the file and calculate the virtual channels to be aligned to the measurements and add them to the graphs i believe there should be some easy easy to do this on chunks of data as i sample for the DAQ data should look like this at the end : what is the best practice to calculate virtual channels? equations are loaded externally from INI file so need a way to parse them thanks, for the help and support
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