High-endurance venturi anemometer with minimum moving parts. Automatic estimation of direction to magnetic nort.
The measuring tube consist an orifice, which increases airflow in the tube. The different speeds generates differentiall preassure, which is measured by electronic differential pressure sensor. The same principle was used in beginnig of aircraft airspeed measurement. It is advantageous due to better sensitivity at lows speeds compared to pitot-static tube.
The anemometer consists the IMU sensor ICM-20948 which contains magnetometer, gyroscopes and accelerometers. The IMU allows sophisticated data aquisition for failure detection and gust wind analysis.
Anemometer should be calibrated before the first use. That ensures, calibration of magnetometer parameters. To correctly determine the wind direction by internal magnetometer.
python3 serial_logger.py 68 15
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