Extreme wind velocity measurement system

专利名称：Extreme wind velocity measurement system发明人：Jan A. Zysko,Stanley O. Starr申请号：US094086申请日：19990914公开号：US06370949B1公开日：20020416

专利附图：

摘要：A wind velocity measurement system employs two different principles ofphysics to measure wind speed: (1) the aerodynamic force imparted to a low profile,rigidly mounted cylindrical rod, and (2) the vibrating frequency of the rod as vortices areshed from the rod's cylindrical surface. A set of strain gages is used as a common sensor

for both measurements, and these provide force measurements imparted by the wind onthe rod. The signals generated by the strain gages are fed to processing circuitry thatcalculates the wind speed and direction from the signals. The force measurement isproportional to the square of the wind speed. Since it is a vector quantity, it can also beused to derive wind direction. The vortex shedding frequency is a scalar quantity and islinearly proportional to wind speed. This frequency can be calculated by analyzing theforce measurements generated by the strain gages over time. Both of the wind velocitycalculations can be advantageously used by the processing circuitry to generate anaccurate wind velocity reading.

申请人：THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOROF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

代理人：Randall M. Heald,John G. Mannix,Gary G. Borda

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