Sound and Vibration Measurement: Instrument Network Service for LabVIEW Pt8: Alpha phase of functionality - Service and LabVIEW Development done

RE: Sound and Vibration Measurement: Instrument Network Service for LabVIEW Pt8: Alpha phase of functionality - Service and LabVIEW Development done

Jan Cumps — Sun, 24 Apr 2022 15:42:04 GMT

Logging is now optimised and can catch up with the sample speed.

Changes to the flow are minimal:

create/open a file that will accept the sample data, and insert the header record
each time the DAQ streams a value, write a record to the data file
close the data file

Jan Cumps — Sun, 24 Apr 2022 13:26:53 GMT

I've added a new example flow that writes the data to a spreadsheet, instead of displaying it on screen.

Here's 6000 samples of a 20 Hz 500 mVpp sinus:

I'll need to review this, because the spreadsheet file logger can't keep up with the samples. But as a first try, it's good to see that it works.

scottiebabe — Fri, 22 Apr 2022 15:45:37 GMT

Neat demo. May I ask what the system noise floor is in g's, mg? ug? ng? Do you see vibrations from trucks driving by lol

Jan Cumps — Fri, 22 Apr 2022 13:22:41 GMT

Sample of a 500 Hz, 500 mVpp waveform:

settings:

sample rate 51200 samples per second
10240 samples per channel
sensitivity 1000 mV (this doesn't impact measurement but takes care that a mV measured is a mV reported)