Control method for tintable windows
First Claim
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1. A method of controlling tint of one or more tintable windows to account for occupancy comfort in a room of a building, the method comprising:
- determining an intersection between an occupancy region and a three-dimensional projection of light through the one or more tintable windows;
using the intersection to determine a tint level of the one or more tintable windows; and
providing instructions to transition tint of the one or more tintable windows to the determined tint level.
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Abstract
A method of controlling tint of a tintable window to account for occupant comfort in a room of a building. The tintable window is between the interior and exterior of the building. The method predicts a tint level for the tintable window at a future time based on a penetration depth of direct sunlight through the tintable window into the room at the future time and space type in the room. The method also provides instructions over a network to transition tint of the tintable window to the tint level.
258 Citations
26 Claims
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1. A method of controlling tint of one or more tintable windows to account for occupancy comfort in a room of a building, the method comprising:
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determining an intersection between an occupancy region and a three-dimensional projection of light through the one or more tintable windows; using the intersection to determine a tint level of the one or more tintable windows; and providing instructions to transition tint of the one or more tintable windows to the determined tint level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A controller for controlling tint of one or more tintable windows to account for occupancy comfort in a room, the controller comprising a processor configured to:
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determine an intersection of a three-dimensional projection of light through the one or more tintable windows with a plane of interest; determine an overlap of the intersection with an occupancy region; use the determined overlap to determine a tint level of the one or more tintable windows; and provide instructions to transition tint of the one or more tintable windows to the determined tint level. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method of controlling tint of one or more tintable windows to account for occupancy comfort in a room of a building, the method comprising:
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determining whether one or more timers is set at the current time; and if one or more timers is not set, determining a filtered tint level; and providing instructions to transition tint of the one or more tintable windows to the filtered tint level. - View Dependent Claims (24, 25, 26)
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Specification