The Doppler motion sensor I bought only outputs a non-amplified signal of a few micro-volts, whose frequency represents the speed at which an object is moving towards or away from the sensor.

But rereading a book sometimes reveals subtle nuances you missed the first time around, and revisiting projects can be much the same, as with this new and improved Doppler radar speed sensor.

The Doppler sensor works by bouncing harmless wave signals off of objects to detect whether they are in motion. When changes in wavelength are detected, the lights are triggered to turn on.

This acoustic doppler data is then further analyzed by something called an "acoustic vector sensor" (AVS) to create a more dynamic picture of traffic patterns. "We can calibrate an acoustic vector ...

doppler sensor market ' Insights 2023 - By Applications (Medical Treatment, Traffic, Security), By Types (X-Band, K-Band), By Segmentation analysis, Regions and Forecast to 2028. The Global ...