Abstract
The paper deals with the application of a newly developed anemometer without moving parts. It is digitized and has built-in electronics that convert the vibrations of two aluminum fixed frames into two digital signals: one, which shows the strength (speed absolute value)) of the wind, and the other, which shows its direction. Earlier works have shown that the two-bit stochastic digital measurement method overcomes (eliminates) the problem of the offset of the analog adder. The authors of this paper apply this idea to the digital output of the sensor, where the role of the offset of the analog adder is taken over by the integral nonlinearity of the digital output of the anemometer. The first step in this direction is dithering digitally the sensor output. This principle is presented in detail, as well as a rough estimate of the accuracy gain in measuring wind energy.
Highlights
In (Vujicic V. et al, 2020) it was shown that an anemometer with cups can measure wind energy very accurately
The fact that the sensor provides two digital outputs naturally imposes the application of two-bit SDMM where hardware analog dithering is replaced by software dithering (Vujicic V. et al, 1998), and further processing is, in principle, is the same as in (Vujicic V. et al, 2020) and (Sovilj P. et al, 2020)
Paper (Sovilj P. et al, 2020) shows how two-bit SDMM is used in nonlinear sensor measurements
Summary
In (Vujicic V. et al, 2020) it was shown that an anemometer with cups can measure wind energy very accurately. This fact is especially important for analyzing many possible locations for wind farms. As one possible solution to overcome this situation is a sensor for simultaneous measurement of wind speed and direction anemometer with fixed frames – which was designed and made (Pugi L. et al, 2018). The topic of this paper is the application of anemometers with fixed frames in measuring energy and average wind direction at potential locations for the construction of wind farms
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