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Ultrasonic wind speed sensor: can get wind data accurately and quickly
Ultrasonic wind speed sensors can be used in many occasions. For example, the measurement of wind in the meteorological field has important research value, and it has a wide range of applications in industry and science. Accurate measurement of wind speed is useful for human production and life. A certain effect. At present, there are many instruments for measuring wind speed, such as wind cup anemometer, thermal anemometer, ultrasonic anemometer, etc. With the development of technology, various fields have higher and higher requirements for wind speed measurement instruments, including volume, speed, power consumption, etc.
Compared with traditional wind speed and direction sensors, the advantages of ultrasonic wind speed sensors are: no rotating mechanical parts, so there is no problem of wear and freezing of mechanical parts due to icing, no start-up wind speed, fast response speed, and wide measurement range. Moreover, the output within the wind speed range is linear and has high accuracy. The ultrasonic wind speed sensor 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 propagation direction of the ultrasonic wave is the same as the wind direction, its speed will increase; conversely, if the propagation direction of the ultrasonic wave is opposite to the wind direction, its speed will slow down. Therefore, under fixed detection conditions, the speed of ultrasonic propagation in the air can correspond to the wind speed function. Accurate wind speed and direction can be obtained by calculation. As sound waves propagate in the air, its speed is greatly affected by temperature; this anemometer detects two opposite directions on two channels, so the influence of temperature on the speed of sound waves is negligible.
Based on the above application, we recommend an industry model product in the field of ultrasonic wind measurement, France LCJ Capteurs ultrasonic wind speed sensor-CV7-OEM. This ultrasonic wind speed sensor has the characteristics of light weight, no moving parts, sturdy and durable, and does not require maintenance and Field calibration can output wind speed and direction at the same time.
The sensor uses sound (and ultrasound) to transmit through the movement of the fluid through which it passes. The electroacoustic transducer uses ultrasonic signals to communicate with each other in pairs, and determines the wave propagation time difference caused by the airflow according to the orthogonal axis. The CV7-OEM transducers communicate with each other and provide four independent measurements, and the head wind measurement vector is used for calculation. Combine these measurement results to calculate the wind speed and direction relative to the reference axis. Temperature measurement is used for calibration. The design of the sensor reduces the influence of the tilt angle (based on the shape of the space, the influence of the sensor tilt angle is partially corrected). At the same time, CV7_OEM ultrasonic wind speed sensor can provide 4 independent test data. The correctness check is used to calculate the head wind vector. This method provides wind speed sensitivity of 0.15m/S, reliability and excellent linearity up to 40m/S. Customers can choose wind speed unit, output frequency and output format according to their needs.