| 摘要 |
PURPOSE:To obtain an anemoscope/anemometer easy for data transmission with a simple construction, by arranging a working element operating at a wind velocity and a mechanism of making a wind direction signal overlap the working element to generate an output of the motion of the working element proportional to the wind velocity as modulated by wind direction. CONSTITUTION:A body 2 is supported at the tip of a strut 1 through a bearing 2b and turned with a propeller 3 facing the direction of wind. The propeller 3 is supported on a bearing 2a through a rotating shaft 3a thereof, rotates in proportion to wind velocity and working element 3b is fixed at the tip thereof. A permanent magnet 3c is fixed at the tip of the working element 3b and turns along a spherical coil 1c according to the rotation of the shaft 3a. The coil 1c has three coils L1, L2 and L3 mounted on as spherical support to generate an induction voltage with the rotation of the magnet 3c, the frequency of which is proportional to the wind velocity and hence, the phase between the coils gives a function of wind direction. The wind velocity is calculated by counting pulses of the induction voltage and wind direction, by measuring the phase between pulses of the coils.
|
