Control method for tintable windows
AssigneeView, Inc.
InventorsStephen Clark Brown, Deepika Khowal, Namrata Vora, Santosh V. Philip
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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.
Claims31
A method of controlling a tintable window located between an interior and exterior of a building, the method comprising:
- using one or more of (i) a first logic module based at least in part on a calculated penetration depth of direct sunlight through the tintable window, (ii) a second logic module based at least in part on a calculated irradiance, and (iii) a third logic module based on a detected irradiance, to determine a tint level for the tintable window;
- using override logic to determine whether to transition to an override tint level;
- and
- providing instructions to transition the tintable window to the tint level or to the override tint level.
A method of controlling tint of a tintable window located between an interior and exterior of a building, the method comprising:
- (a) using a first logic module to determine a tint level for the tintable window based on a calculated penetration of direct sunlight through the tintable window;
- (b) using a second logic module to determine whether to modify the tint level from the first logic module based on a calculated irradiance in a room with the tintable window;
- (c) using a third logic module to determine whether to modify the tint level from the second logic module based on a detected irradiance;
- and
- (d) providing instructions to transition the tintable window to the tint level.
A controller for controlling tint of a tintable window located between an interior and exterior of a building, the controller comprising:
- at least one processor configured to determine a tint level at a future time for the tintable window by:
- (i) using a first logic module to determine the tint level based on a calculated penetration of direct sunlight through the tintable window, (ii) using a second logic module to determine whether to modify the tint level from the first logic module based on a calculated irradiance in a room with the tintable window at the future time, and (iii) using a third logic module to determine whether to modify the tint level from the second logic module based on a detected irradiance;
- and
- circuitry in communication with the at least one processor and iwth the tintable window, the circuitry configured to receive a signal from the at least one processor and apply voltage and/or current to bus bars of the tintable window to transition the tintable window to the tint level.
Dependencies are inferred from the claim text.