Measurement of heliostat mirrors using reflected targets

Devon Kesseli; Guangdong Zhu; Rebecca Mitchell; Mojolaoluwa Keshiro; Tucker Farrell

doi:10.1117/12.2677715

5 October 2023 Measurement of heliostat mirrors using reflected targets

Devon Kesseli, Guangdong Zhu, Rebecca Mitchell, Mojolaoluwa Keshiro, Tucker Farrell

Proceedings Volume PC12671, Advances in Solar Energy: Heliostat Systems Design, Implementation, and Operation; PC1267103 (2023) https://doi.org/10.1117/12.2677715
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

NREL is presenting an indoor optical measurement system for large heliostat mirrors. This is a target-based deflectometry system, which uses a thin printed patterned targets and a moving camera to scan large mirrors, measuring the surface slope. This system is compared to existing fringe deflectometry and photogrammetry measurement systems, and the computer vision techniques that make it possible are described. While it cannot achieve the resolution of a fringe deflectometry system, the simplicity and low cost of setup make it well suited for the CSP industry.

Conference Presentation

Citation Download Citation

Devon Kesseli, Guangdong Zhu, Rebecca Mitchell, Mojolaoluwa Keshiro, and Tucker Farrell "Measurement of heliostat mirrors using reflected targets", Proc. SPIE PC12671, Advances in Solar Energy: Heliostat Systems Design, Implementation, and Operation, PC1267103 (5 October 2023); https://doi.org/10.1117/12.2677715

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