AKKUtrack™ is an advanced tool that allows to measure quantitatively the degree of accuracy of solar tracking systems and simultaneously provide an indication of sunlight intensity at different wavelengths, offering the advantage of having two different functions in one instrument. It’s a real monitoring station for measuring the direct solar radiation that uses a multispectral camera. The great amount of data provided by AKKUtrack™, not only gives measurements of solar irradiance at various wavelengths, but it also allows to validate the data recorded by a measure of the error in the pointing of the solar source. Image processing provides a variety of informations unavailable through conventional measurements. AKKUtrack™ is provided with EVA , a powerful and user friendly software for data representation and analysis, which works in two modes: - Tracking Mode, to measure Solar Trackers accuracy and pointing error, - Measure Mode, to measure Solar Simulators angular divergence. This software tool was developed entirely in NI LabVIEW™ and it is available in the form of executable code with a user-friendly interface, or as a virtual instrument (VI) to be inserted within a LabVIEW code developed by the user. This extreme flexibility allows to exploit the full product potential for a standard user – only interested in the use of the instrument – but also for a more experienced user who wants to add AKKUtrack features inside an extensive acquisition or monitoring system. A patented technique implemented in EVA allows to retrieve the wide spectrum DNI from monochromatic images of the solar disc. Advanced image processing (pattern matching) allows to: - detect the solar disk in the field of view and to discriminate against any reflections, - identify the exact position of the sun in the case of partially covered sky, - report the maximum errors committed in both directions. All data provided by the user interface may be registered in a log file for further processing or for history analysis of system parameters.
EVA for AKKUtrack
BARICORDI, Stefano;POZZETTI, Luana;VINCENZI, Donato
2011
Abstract
AKKUtrack™ is an advanced tool that allows to measure quantitatively the degree of accuracy of solar tracking systems and simultaneously provide an indication of sunlight intensity at different wavelengths, offering the advantage of having two different functions in one instrument. It’s a real monitoring station for measuring the direct solar radiation that uses a multispectral camera. The great amount of data provided by AKKUtrack™, not only gives measurements of solar irradiance at various wavelengths, but it also allows to validate the data recorded by a measure of the error in the pointing of the solar source. Image processing provides a variety of informations unavailable through conventional measurements. AKKUtrack™ is provided with EVA , a powerful and user friendly software for data representation and analysis, which works in two modes: - Tracking Mode, to measure Solar Trackers accuracy and pointing error, - Measure Mode, to measure Solar Simulators angular divergence. This software tool was developed entirely in NI LabVIEW™ and it is available in the form of executable code with a user-friendly interface, or as a virtual instrument (VI) to be inserted within a LabVIEW code developed by the user. This extreme flexibility allows to exploit the full product potential for a standard user – only interested in the use of the instrument – but also for a more experienced user who wants to add AKKUtrack features inside an extensive acquisition or monitoring system. A patented technique implemented in EVA allows to retrieve the wide spectrum DNI from monochromatic images of the solar disc. Advanced image processing (pattern matching) allows to: - detect the solar disk in the field of view and to discriminate against any reflections, - identify the exact position of the sun in the case of partially covered sky, - report the maximum errors committed in both directions. All data provided by the user interface may be registered in a log file for further processing or for history analysis of system parameters.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
