VAISALAWINDCAP®技术

VaisalaWindcap®超声波风传感器使用超声来确定风速和方向。该传感器没有运动部件，这使其独立于机械风传感器的局限性，例如摩擦，惯性，时间常数，超速和启动阈值。

怎么运行的

WINDCAP® sensor features an array of three ultrasonic transducers oriented to form an equilateral triangle. Wind measurement is based on time of flight (TOF) of the sonic impulse - the time it takes for the signal to travel from one transducer to another. TOF is measured in both directions for each pair of transducer heads. Simple algebra allows solving for the parallel component of wind velocity independently of the static speed of sound.

三个传感器的等边三角形配置提供了三组基矢量。这些组合在标有A，B和C的路径上产生双向测量。这些测量用于确定与三个路径中每个路径平行的风速分量。