Easily master wind data with ultrasonic wind speed sensors
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 is also widely used in the fields of industry and science. Accurate measurement of wind speed will be beneficial to human production and life. Certain role. At present, there are many kinds of instruments for measuring wind speed, such as wind cup anemometer, thermal anemometer, ultrasonic anemometer and so on. With the development of technology, the requirements for wind speed measurement instruments in various fields are getting higher and higher, 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 starting wind speed, fast response, wide measurement range, Moreover, the output within the range of wind speed is linear and has high precision. The ultrasonic wind speed sensor uses the ultrasonic time difference method to realize the measurement of wind speed. The velocity of sound in the air is superimposed on the velocity of the airflow in the wind direction. If the ultrasonic wave travels in the same direction as the wind, its speed will increase; conversely, if the ultrasonic wave travels in the opposite direction to the wind, its speed will slow down. Therefore, under fixed detection conditions, the speed of ultrasonic waves propagating in the air can correspond to the wind speed function. Accurate wind speed and wind direction can be obtained through calculation. Because the speed of sound wave is greatly affected by temperature when it propagates in the air; this anemometer detects two opposite directions on two channels, so the influence of temperature on the speed of sound wave can be ignored.
Based on the above application, we recommend a French LCJ Capteurs ultrasonic wind speed sensor - CV7-OEM, an industry model product in the field of ultrasonic wind measurement. On-site calibration, can output wind speed and wind direction at the same time.
A sensor uses sound (and ultrasound) to transmit through the motion of the fluid it moves through. The electro-acoustic transducers communicate with each other two-by-two using ultrasonic signals to determine the wave travel time difference caused by the airflow according to the orthogonal axes. The CV7-OEM transducers communicate with each other to provide four independent measurements, while the headwind measurement vector is used for calculations. These measurements are combined 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 for the calculation of the head wind vector. This method provides a wind speed sensitivity of 0.15m/S, reliability and excellent linearity up to 40m/S. Customers can choose the wind speed unit, output frequency and output format according to their needs.
