An intelligent wind sensor system with auto-zero function

An intelligent wind sensor system including a novel 2-D wind sensor and the interface circuits was presented in this paper. The wind sensor was fabricated on the ceramic substrate using single lift-off process, and packaged by direct chip attach (DCA) packaging. Both the thermal and electrical feedbacks were used to cancel the offset of temperature drift. Full-bridges composed of thermistors were used for wind velocity and direction measurement. The wind tunnel test results show that the wind sensor can measure wind speeds up to 60 m/s, and wind direction in a full range of 360deg with a resolution within 2deg.