风矢量的自动检测

风速，是自然界中的一个很重要的信息，它包括两个参量：速度和风向。本文综合了国内外的不同测量方法，重点介绍了一种智能低耗风传感器。它由两个自热PTC（正温度系数）元件构成，可以在两个方向测出可靠的风矢量。文中还介绍了该传感器的建模方式和检测方法，该方法可以有效地利用校正程序自动补偿由于器件的非线性、元件的被污染及老化等因素造成的误差。

Automatic Detecting of the Wind Vector

Wind velocity is an important information of nature.It involves two parameters: velocity and direction. This paper synthesizes different measuring methods and introduces a smart low-cost wind sensor, which is composed of two self-heated PTC (positive temperature coefficient)elements and can measure reliable wind vectors in two directions. This paper also presents the fashion of modeling and detecting method of the sensor. By using the calibration program effectively, this method can automatically compensate the errors caused by the nonlinearity of the instruments,the pollution and aging of the elements.