High-Precision Mini Wind Speed Meter Digital Measuring Instrument Multi-Function

The working principle of the wind speed sensor is as follows: the sensing element of the wind speed sensor is a three cup rotary frame, and the signal conversion circuit is a Hall switch circuit. Under the action of horizontal wind, the wind cup group rotates and drives the magnetic rod disk to rotate through the main shaft. The 36 magnets on the wind cup group form 18 small magnetic fields. Each revolution of the wind cup group induces 18 pulse signals in the Hall switch circuit, and its frequency increases linearly with the increase of wind speed. The calibration equation is: V=0.1F (V: wind speed, unit: m/s; F: pulse frequency, unit: Hz).

The wind direction portion is supported by a retainer protecting the wind cup. It consists of a wind vane, wind direction axis, and wind direction dial. A magnetic compass consisting of a magnetic rod mounted on the wind direction dial and a wind direction dial is used to determine the direction of the wind. When rotating the tray nut under the wind direction dial housing, the tray lifts or lowers the wind direction dial, causing the prototype bearing to leave or contact the shaft tip. The wind direction indication value is determined by the stable position of the wind direction pointer on the wind direction dial.