Wind speed measurement using distributed fiber optic sensing
View Patent ↗Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously measure wind speed at utility poles that support fiber optic cables and—in many applications—electrical and/or other communications cables (i.e., cable television).
1. A distributed fiber optic sensing (DFOS) system for wind speed measurement, said system comprising:
a length optical fiber cable, at least a portion of the length being suspended by one or more utility pole(s);
a DFOS interrogator system in optical communication with the optical fiber cable;
one or more fiber pinwheels attached to the utility poles, said fiber pinwheels generating mechanical vibrations in response to moving air (wind), said mechanical vibrations imparted to the fiber cable; and
an intelligent analyzer configured to analyze DFOS sensing data received by the DFOS interrogator system, said analyzer configured to determine wind speed at one of the fiber pinwheels.
2. The DFOS system of claim 1 wherein the intelligent analyzer is configured to determine wind speed at a plurality of the fiber pinwheels.
3. The DFOS system of claim 2 wherein individual ones of the fiber pinwheels are connected to an individual one of the utility poles by a wind tower that communicates mechanical vibrations generated by the individual one of the fiber pinwheels to the individual one of the utility poles.
4. The DFOS system of claim 1 wherein the fiber pinwheels generate vibration and frequency signals in response to the wind.
5. The DFOS system of claim 1 that is configured using artificial intelligence models and databases of historic calibration data to determine wind speed.
6. The DFOS system of claim 5 wherein a fast wind speed is associated with high intensity and high frequency vibrations.
7. The DFOS system of claim 6 wherein a slow wind speed is associated with low intensity and low frequency vibrations.
8. The DFOS system of claim 7 wherein the DFOS system employs distributed vibration sensing (DVS) or distributed acoustic sensing (DAS).