WIND SENSOR

PURPOSE:To detect variation in air flow linearly by providing conductors to part of a rotating body which is rotated freely by wind, generating a current by breaking a magnetic field, and converting the current into a voltage. CONSTITUTION:Blades 9 made of insulators are fitted onto the circumference of the rotating body 8, and conductors 10 are fitted atop of them. This rotating body 8 is fitted to a main body 12 and rotated freely. Further, magnets 13 and 14 for applying a magnetic field to a conductor 10 fitted to one blade 9 are fitted to the main body 12. If wind blows, the wind is guided into the main body through a wind entrance 11 to rotate the rotating body 8, and the conductors 10 breaks the magnetic field to generate a current. As the rotation is speeded up, the current also increases and their relation is linear. The generated current is led out through a shaft 14 and converted into the voltage. Thus, variation in air flow is detected linearly.