Ultrasonic wind speed and direction sensor working principle

How do ultrasonic wind speed and direction sensors work?

The working principle of ultrasonic wind speed and direction sensor is to use ultrasonic time difference method to measure wind speed. The velocity of the sound in the air will be superimposed on the velocity of the wind. If the direction of propagation of the ultrasonic wave is the same as the direction of the wind, its speed will increase. Conversely, if the direction of ultrasonic wave propagation is opposite to the direction of the wind, its speed will become slower.

Ultrasonic wind speed and direction sensor

Therefore, under fixed detection conditions, the speed at which ultrasonic waves propagate in the air can correspond to the wind speed function. Accurate wind speed and wind direction can be obtained through calculation. As the sound wave propagates in the air, its speed is greatly affected by temperature; the anemometer detects two opposite directions on both channels, so the effect of temperature on the sound wave velocity is negligible. Because ultrasonic wind speed and direction sensor overcomes the inherent flaws of the mechanical wind speed and wind direction instrument well, it can work normally all the time and for a long time, and it is more and more widely used.

ultrasonic wind speed and direction sensor will be a powerful alternative to mechanical anemometers. The user can select the unit of wind speed, output frequency and output format as required. Heating units (recommended for use in cold conditions) or analog outputs can also be selected as needed. Can be used with computers, data loggers, or other acquisition devices that have RS485 or analog output. If necessary, multiple stations can also be used as a network.


1, 0.01 high precision measurement: leading technology, high data accuracy guarantee, measurement accuracy up to 0.01, more accurate data;

2, acoustic phase compensation technology: no inertial measurement, accurate and reliable data measurement, fast response, high precision, stable signal;

3, no start wind speed limit, zero wind speed work, can obtain wind speed and direction data at the same time;

4, integrated design: ultrasonic wind speed and direction sensor wear is small, no maintenance and on-site calibration, data stability and accuracy, long life, easy to deal with all kinds of harsh environment;

5, Random error identification technology: low discrete error can be guaranteed under strong wind to ensure stable data output;


1, exquisite version with spiral damping grain: increase friction, easy to grasp, the appearance is more beautiful;

2, exquisite version with sink hole: through the coordination with the hollow isolation column, can divert the rain water out, strong reliability.

3, compact version/integrated version: with direction mark on the top surface with direction mark, easy to install the direction calibration; Fixed one direction, automatic identification of other directions during detection.

4, integrated version can be customized multiple parameters: integrated box can be customized wind speed and direction/temperature and humidity noise/CARBON dioxide /PM2.5/PM10 and other 20 more parameters.

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