UTS Tech Lab Vibration Lab Polytec VibroGo - capturing very low level transient vibration signals
Автор: Ben Halkon
Загружено: 2024-10-17
Просмотров: 188
In this video, I demonstrate the use of the Polytec VibroGo, which we are fortunate to have access to in our Vibration Lab at our experimental research facility, UTS Tech Lab. I am using the instrument to collect very low level vibrations of the tapping of a plastic cup with a lightweight "tapping stick" (a zip tie). This is to simulate the kind of measurement that might be made in the field where e.g. an insect might drum on or pluck a substrate. Or some other equivalent biological or naturally occurring phenomenon.
The instrument has been set-up with maximum sensitivity, i.e. 1.25 mm/s/V. The acquisition is triggered in Vibsoft-VL with 50% of full scale trigger threshold and 10% pre-trigger, so we don't miss the start of the event before trigger threshold - the accompanying Polytec acquisition software package - which has been set-up to record at 50 kHz sample frequency for and the recording is immediately available (and can be exported as e.g. a .wav)...
...it should have been noted during the video at around 1m10s that the noise that is being picked up in the recording is being played out of the laptop running VibSoft-VL for the acquisition.
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