How to measure RPM of an encoder using 5MHz counter of NI USB 6008?

[Kartik_S]

I have an encoder with a resolution of 1024PPR. I would like to measure RPM of a motor in LabVIEW using that encoder via a DAQ Card (Counter). Is there any example availble for the same?

[GerdW]

Hi Kartik,

RPM = (pulses per second) * 60 / 1024 PPR

All you need to do is to check the value of the counter each second and to calc the difference to the previous value...

Examplesfor reading a CTR are found in the example finder (Help menu in LabVIEW)!

[Kartik_S]

Thanks buddy 🙂

I would like to know one more thing. Generally in Digital Inputs along with Logic States (High or Low) we get Time Stamps. Like that do we get any time stamps from Counters to calculate number of pulses per second accurately?

Regards,

Kartik S

[GerdW]

Hi Kartik,

I'm not sure, but can't you upset a DAQmx task for your CTR to use continuous sampling with a rate of 1Hz? No need to measure time then as that would be done by the DAQmx driver...

[Kartik_S]

I will try this and come back to you in a couple of days.

Weekend ahead 😛 😄

Thank you 🙂

Regards,

Kartik S