Researchers at Dublin Institute of Technology (DIT) have developed a novel instrument for the simultaneous measurement of wind speed, direction and turbulence. The multi-directional anemometer uses multiple Pitot tubes incorporated into a unique spherical design to provide simultaneous real-time data on wind speed, direction, and uniquely, turbulence. Currently there is no instrument on the market which can measure wind turbulence accurately, with wind measurement devices being limited to simple cup anemometers or wind vanes which provide limited data sets. The Metometer, by sampling wind speeds at frequencies up to 3,000Hz, can provide superior three dimensional data on wind speed and direction, and provides an accurate indication of turbulence. This patent-pending device has a wide range of applications that include:
• Enhanced site evaluation, planning, development and monitoring capability for wind farms and tidal energy farms;
• Superior meteorological data collection and analysis;
• Urban planning applications for civil and mechanical engineers;
• Improved data for decision-making in aviation to enhance efficiencyand safety
• Road safety applications.
The device, which is patent-pending, specifically measures fluid speed, direction, and turbulence. It incorporates a unique design employing pitot tubes and pressure sensors. Data analysis software is used to interpret the collected data and display it in a user-friendly interface. Wind speeds from 0-250 m/sec can be measured with a certified level of accuracy to less than 0.05% Full Scale Output (FSO). The device has been assessed to have better sampling rates and accuracy than existing technologies such as cup anemometers or wind vanes and can measure in three dimensions. Other devices like sonic anemometers are also limited in their sampling rate (typically 20Hz), whereas the Metometer can sample at frequencies up to 3,000 Hz. The resolution of data provided by the device is only limited by the frequency required by industry and by the natural fluctuations of wind or fluid to be measured. Data from initial trials carried out over 12 months has proven the device to be robust and can be built to withstand practically all environments, including underwater conditions.