초록 ▼

Control of a heliostat field (1) in a solar energy plant is provided with a system (6) which controls the alignment of heliostat mirrors (2) in a controlled area of the heliostat field (1) with respect to a selected zone in a target plane (P). The control system (6) comprises a detection device (7)

Control of a heliostat field (1) in a solar energy plant is provided with a system (6) which controls the alignment of heliostat mirrors (2) in a controlled area of the heliostat field (1) with respect to a selected zone in a target plane (P). The control system (6) comprises a detection device (7) removed from the target plane (P) in the direction of propagation of radiation (R') directed by the heliostat mirrors towards the target plane (P). The detection device (7) has a detection surface (8) facing the radiation (R'). The control system further comprises first means (9) capable of projecting on the detection surface (8) concentrated solar radiation delivered to the selected zone from the controlled area of the heliostat field (1) to produce thereon an image of the controlled area, second means (12) associated with the detection device for measuring separately the light intensity of portions of the image and third means for adjusting each heliostat mirror (2) in the controlled area in response to such measurements.

대표청구항 ▼

[ We claim:] [1.] A solar energy plant comprising a heliostats field with a plurality of heliostat mirrors for the concentration of solar radiation and direction of the concentrated solar radiation towards a target plane, and at least one control system for the control of the alignment of heliostat

[ We claim:] [1.] A solar energy plant comprising a heliostats field with a plurality of heliostat mirrors for the concentration of solar radiation and direction of the concentrated solar radiation towards a target plane, and at least one control system for the control of the alignment of heliostat mirrors in a controlled area of the heliostat field with respect to a selected zone in the target plane, said control system comprising a detection device associated with said target plane and having a detection surface, and adjusting means for adjusting the heliostat mirrors in said controlled area based on measurements made on the detection surface of the detection device;characterised in thatsaid detection device of the control system is removed from the target plane in the direction of the concentrated solar radiation, said detection surface facing said concentrated radiation, said control system further comprising first means having an optical entrance located essentially in said selected zone of the target plane and capable of projecting on said detection surface the concentrated solar radiation delivered to the selected zone from the controlled area of the heliostat field to produce thereon an image of said controlled area, and second means associated with said detection device for measuring separately the light intensity of portions of said image of the controlled area.