Structural Design And Analysis Of A Wind Speed Sensor

China has strongly advocated the use of clean energy, wind energy as a renewable energy are of great significance in the future production of human life. The wind is produced by the flow of air. As a fluid, it also has two states:laminal flow and turbulent flow. In the near surface or the wind speed is very slow will occur laminar flow, when the wind speed increases, the laminar flow will become turbulent. In meteorology wind is considered as a two-demonsional vector, i.e., the wind speed(wind vector modulus) and wind derection(wind vector argument). Wind speed sensors have been larged-scale use in production, but there are always more or less disadvantages. The article is based this, design a new wind speed sensor that can simultaneously measure the wind speed and direction, and in some rain and snow or other inclement weather which can ensure the normal use.The main consideration in the atmosphere is the horizontal of the wind, which is considered as a two-dimensional vector. So design a two-dimensional wind sensor which is composed of a ball, cylindrical fixed rod and a cross beam. When the ball receives the influence of horizontal wind velocity, the ball has a roundabout flow resistance, also through a cylindrical rod is fixed on the cross beam produces a moment, making cross beam deformation occurs, producing strain, the magnitude and direction of the wind speed is determined according to the size of strain on the cross beam.In this paper, the working principle of the new wind speed sensor is introduced in detail, then esetablish the mathematical model, using the Fluent software to do the ball around the flow model simulation. Using the Workbench software of sensor static simulation analysis, analys the cross elastic beam strain under the different wind speed, and compare the simulation results with the theoretical model, verify the correctness of the two results. Then use ANSYS Workbench software to opotimze the structure size of the sensor, establish the relationship between the sensor strain and the structure size of cross beam, orthogonal tests were carried out on the sensor size, selected reasonable structure size, and the strength check of the sensor is carried out. Finally, the fluid solid coupling analysis of the sensor is carried out, and establish the mathematical model of the wind speed and the strain of the sensor, obtain the range of the sensor, and introduce some attention of the sensor in the measurement in a brief.