| Electronics > Beginners |
| Are there non-contact vibration sensors for Arduino or PC? |
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| Brumby:
--- Quote from: engineheat on September 09, 2019, 04:47:31 am ---A max data sampling freq of 3200 is not enough to sense vibration 5khz or above right? I assume an object that creates a 5khz sound is also vibrating at 5khz. --- End quote --- Using Nyquist, a 3.2kHz sampling rate will be able to handle frequencies up to 1.6kHz - but that does not mean a 3.2kHz sampling rate won't pick up something from a 5kHz vibration. You won't be able to reproduce the 5kHz waveform, but you might get something you could use. At this point, however, I will defer to those who can speak with more authority on such a subject. |
| ddavidebor:
--- Quote from: engineheat on September 09, 2019, 04:50:56 am --- --- Quote from: kosine on September 08, 2019, 12:32:01 pm ---Would a linear hall effect sensor work? SS49E datasheet says response time of 3us, so sampling rate would be adequate. https://sensing.honeywell.com/honeywell-sensing-ss39et-ss49e-ss59et-product-sheet-005850-3-en.pdf --- End quote --- I'm not familiar with hall effect sensors. How would it work for my project? thanks --- End quote --- You put a magnet somewhere, a hall sensors somewhere else in close proximity. Magnetic field varies and so does the hall sensor output that measures magnetic fields. |
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