A heliostat is a mirror that reflects the sunlight always on the same spot regardless of the sun's position.
Whole fields of such mirrors are used for solar thermal power plants. The sunlight heats a medium that is used to generate electrical energy. Modern heliostats such as the Stellio heliostat shown here have a diameter of about 10m. A profound understanding of the behavior of the mirrors under wind loads is needed in order to optimize performance. As part of a research project at DLR, one of the major German research institutions, in Jülich, Germany, Linearis3D has developed a photogrammetric video system that is capable of detecting dynamic deformations of heliostats in all weather and lighting conditions.
To solve the measuring task, Linearis3D created a dynamic photogrammetric measuring system with the following features.
The video photogrammetry system makes precise 3D deformation measurements of a very high number of measuring points possible while requiring relatively little time and cost. As a result the system contributes significantly to the success of the research project.
We would like to thank DLR for the excellent cooperation.
We will advise you on which measured values matter — and recommend the right system.
Deutsch
