Wind direction measuring device and method based on FBG sensors

The invention provides a wind direction measuring device based on FBG sensors. The wind direction measuring device comprises a wind vane, a crank-link mechanism, and two fiber Bragg grating FBG sensors. The wind vane is connected with the crank-link mechanism, and is used to rotate along with wind. The crank-link mechanism comprises a sliding block, is connected with the wind vane and the two FBG sensors, and is used to convert rotation of the wind vane into linear reciprocating movement of the sliding block. The two FBG sensors are connected with the crank-link mechanism, and are respectively used to detect the position of the sliding block and identity the symmetry of the reciprocating movement of the sliding block. The invention further provides a wind direction measuring method based on FBG sensors. The device and the method are advantageous in that wind direction measurement is passive and is not affected by outside electromagnetic interference, and the device is resistant to high temperature and corrosion. The safety and reliability are effectively improved.