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Fiber anemometer for simultaneously measuring wind speed and wind direction
Author(s) -
Cheng JuiNan,
Chang HungYing,
Fu MingYue,
Liu WenFung
Publication year - 2019
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31677
Subject(s) - anemometer , wind speed , fiber bragg grating , wind direction , wavelength , materials science , optics , wind shear , acoustics , wind gradient , meteorology , physics
In this paper, we proposed a novel anemometer for simultaneously and conveniently monitoring wind speed and wind direction by using a pair of fiber Bragg gratings (FBGs). The anemometer comprises a plastic ball, a stainless steel rod, and two FBGs. The gratings are glued to the surface of the stainless steel rod with a location separation of 90°. In the operation mechanism, the bend in the stainless‐steel‐rod caused by the wind force drives the FBGs, thereby leading to a grating wavelength shift for the measurement both of wind speed and wind direction This fiber anemometer is experimentally demonstrated in real time with a sensitivity of 0.02 nm/(m/s) and a resolution of 0.49 m/s for wind speed measurement, with a wind speed error of less than 2.38%, and a wind direction angle error of approximately 0.69%.