Background
The ultrasonic wind speed and direction sensor is a wind measurement instrument developed based on the principle of ultrasonic. Using the transmitted sound wave pulse, the time or frequency difference at the receiving end is measured to calculate the wind speed and direction. It is widely used in the measurement of wind direction and speed in greenhouses, environmental protection, weather stations, ships, docks, and breeding. Support customization, sturdy and durable, and can cope with various harsh environments such as wind, sun, rain, and frost.
The working principle of ultrasonic wind speed and direction instrument
Wind measurement instrument uses the ultrasonic time difference method to achieve wind speed measurement. The speed of sound in the air is superimposed on the speed of the airflow in the wind. If the ultrasonic wave travels in the same direction as the wind, its speed will increase. Conversely, if the propagation direction of ultrasonic waves is opposite to the wind direction, its speed will slow down. Therefore, under fixed detection conditions, the propagation speed of ultrasonic waves in the air can correspond to the wind speed function. The precise wind speed and direction can be obtained by calculation. As sound waves propagate in the air, its speed is greatly affected by temperature.
Advantages of integrated wind speed and direction sensor
The ultrasonic wind measurement instrument has no start-up wind speed limit, zero wind speed work, no angle limit. No moving parts, low wear and long service life. Using acoustic wave phase compensation technology, high precision and fast response speed. Using random error recognition technology. Even under strong winds, the low dispersion error of the measurement can be ensured, and the output can be more stable. Engineering plastic shell, lightweight design, portable, easy to install and disassemble. The signal access is convenient and supports 485-RTU. No maintenance and on-site calibration are required.
