Postby BaartCM » Tue Apr 17, 2018 7:46 am
Hi, I have a vibration analysis project. I have been using the stm32f103 which can get high sampling rates with analogRead() and even higher using DMA but I want to go wireless and the ESP32 seems the logical step forward.
Whilst 6 ksps is ok for most of my application, Lubrication deficiency shows up as a broad band increase between 5khz and 15 kHz in the FFT spectra so a sampling rate of 30-40 ksps would be nice. I’d rather pick up a lubrication problem that can be sorted with a shot of grease than wait for a full blown bearing fault to become evident lower down the frequency scale.
Could this rate be achievable using dma techniques and has anyone done any work on it?
Fingers crossed, Steve.