Light level control for building illumination
First Claim
1. A control system for controlling the light level of the interior of at least a portion of a building, the least portion of the building being illuminated by both daylight via one or more transparent portions and by generated light via one or more electric lights;
- the control system being operatively connected to;
at least one interior sensor for detecting an interior light level;
at least one electric light controller for controlling the light level of the one or more electric lights;
at least one window treatment controller for controlling the admittance level of daylight admitted through the one or more transparent portions; and
a processing unit for handling control setpoints, the control setpoints comprises an interior light level setpoint, the processing unit being operatively connected to the at least one interior sensor;
wherein the processing unit determines a difference between the detected interior light level and the interior light level setpoint, and wherein the light level of the one or more electric lights and the admittance level of daylight admitted through the one or more transparent portions are controlled in parallel by operating the at least one electric light controller and the at least one window treatment controller to, based on the difference between the detected interior light level and the interior light level setpoint, control the light level of the interior of at least the portion of the building.
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0 Petitions
Accused Products
Abstract
The present invention deals with light level control for building illumination by controlling electric lights and windows treatment. In an embodiment, the light level is controlled by a control system (2) operatively connected to at least one interior sensor (3) for detecting an interior light level; at least one electric light controller (4) for controlling the light level; at least one window treatment controller (5) for controlling the admittance level of daylight; and a processing unit (7) for handling control setpoints, including an interior light level setpoint. The level of the electric lights and the admitted level of daylight are controlled in parallel by operating the electric light controller and the window treatment controller.
43 Citations
14 Claims
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1. A control system for controlling the light level of the interior of at least a portion of a building, the least portion of the building being illuminated by both daylight via one or more transparent portions and by generated light via one or more electric lights;
- the control system being operatively connected to;
at least one interior sensor for detecting an interior light level; at least one electric light controller for controlling the light level of the one or more electric lights; at least one window treatment controller for controlling the admittance level of daylight admitted through the one or more transparent portions; and a processing unit for handling control setpoints, the control setpoints comprises an interior light level setpoint, the processing unit being operatively connected to the at least one interior sensor; wherein the processing unit determines a difference between the detected interior light level and the interior light level setpoint, and wherein the light level of the one or more electric lights and the admittance level of daylight admitted through the one or more transparent portions are controlled in parallel by operating the at least one electric light controller and the at least one window treatment controller to, based on the difference between the detected interior light level and the interior light level setpoint, control the light level of the interior of at least the portion of the building. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 14)
- the control system being operatively connected to;
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12. Illumination system for illuminating at least a portion of a building, the least portion of the building being illuminated by both daylight via one or more transparent portions and by generated light via one or more electric lights;
- the illumination system comprises;
at least one interior sensor for detecting an interior light level; at least one electric light controller for controlling the light level of the one or more electric lights; at least one window treatment controller for controlling the admittance level of daylight admitted through the one or more transparent portions; a processing unit for handling control setpoints, the control setpoints comprises an interior light level setpoint, the processing unit being operatively connected to the at least one interior sensor; and a control unit for controlling the light level of the interior of the at least portion of the building; wherein the control unit operates the processing unit to determine a difference between the detected interior light level and the interior light level setpoint, and wherein the light level of the one or more electric lights and the admittance level of daylight admitted through the one or more transparent portions are controlled in parallel by operating the at least one electric light controller and the at least one window treatment controller to, based on the difference between the detected interior light level and the interior light level setpoint, control the light level of the interior of at least the portion of the building.
- the illumination system comprises;
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13. Method of operating an illumination system to illuminating at least a portion of a building, the method comprises:
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receiving control setpoints, the control setpoints comprises an interior light level setpoint; detecting an interior light level; controlling the light level of the one or more electric lights; and controlling at least one windows treatment to set an admittance level of daylight admitted through one or more transparent portions; wherein the light level of the one or more electric lights and the admittance level of daylight admitted through the one or more transparent portions are controlled in parallel by operating the at least one electric light and the at least one window treatment to, based on the difference between the detected interior light level and the interior light level setpoint, control the light level of the interior of at least the portion of the building.
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Specification