Filter for Base Development System

[M_Blaylock33]

Hello All,

     I recently discovered that the base development system in LabView does not include any of the Filter VI's, but I am sure there is a way around it. I know it is possible to create my own Low-Pass Filter VI, but I am curious if that is the only way? I am acquiring my signals using multiple index arrays then applying a formula to the signal to convert the voltage coming in to a flow rate or temperature. I know you can apply filters using DAQmx, but I would have to convert all of my code away from DAQ Assistant in order to incorporate that. Thank you for any possible assistance.

[GerdW]

Hi Blaylock,

I would have to convert all of my code away from DAQ Assistant in order to incorporate that.

It's no bad idea to get rid of DAQAssistent ExpressVIs, so you would have to do this step anyway! 😄

I know it is possible to create my own Low-Pass Filter VI, but I am curious if that is the only way?

There are other ways: you could upgrade your LV license from Base to Full or Professional…

[M_Blaylock33]

GerdW,

     Thank you for the prompt reply. I know DAQ Assistant isn't the best way to accomplish what I'm doing, but the program is very large and it would take quite a bit of time and money to make the change to DAQmx. I have started using DAQmx for new modules that we add on so that someday it will be easier to make the change. However, for now (except for the slight noise issue) the program works well. The upgrade to the Full Development System is quite a hefty fee, so I am trying to create a work-around that will not require loads of programming time or dishing out large sums of money. 

     If those seem to be the only 2 possibilities then I might end up having to make the conversion in the end anyway. I'm just looking for other options first.

[Dennis_Knutson · Accepted solution]

The DAQ Assistant uses DAQmx so converting to those functions will not gain you anything. There simply are not any filter functions in the base version of LabVIEW. Write your own, upgrade, or use an external hardware filter.