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hpvdt / falcon_windspeed

Firmware for Falcon's pietostatic system
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Investigate sensor reading noise #5

Open savob opened 2 months ago

savob commented 2 months ago

Currently the sensors used (ND005) is providing values with significant noise even under static conditions. Perhaps adding a loop buffer to the readings for each sensor to average the last n readings can help address this issue.

savob commented 2 months ago

Applying the notch filter and decreasing the bandwidth seems to have helped reduce noise a fair bit. It is now on the order of a few Pa which is a little over the noise floor specified in the data sheet, the rest may very well be due to the actual pressure reading changing.

The only real way forward I see is to change to the more sensitive N110 sensors which should greatly improve the signal to noise ratio.