This invention discloses a portable on-site calibration device and method for wind sensors. The calibration device includes an
execution unit, which, from bottom to top, comprises a base, a
stepper motor gear compartment, and a ring angle
encoder. A fixing bracket is provided on the side of the gear compartment. A
wind speed generating unit includes a horizontally continuous chamber with an air outlet at the rear end. Inside the chamber, a fan module and a
honeycomb panel are arranged sequentially along the
wind speed direction. The
honeycomb panel has uniformly arranged, closely spaced horizontal through holes with an equivalent
diameter of 4-8 mm. This invention's
wind speed generating unit uses only a combination of a fan module and a
honeycomb panel to output a low-speed, uniform
wind field. It is compact, low-cost, and has a fully
open structure. Combined with an angle scale, angle stop bar, and
electromagnet, it can automatically complete the
wind direction sensor calibration process.