Electrically controllable window treatment system to control sun glare in a space
First Claim
1. A method for reducing sun glare through an opening into a space, wherein the amount of daylight is sensed by a first sensor and selectively alterable by an electrically controllable window treatment, the method comprising the steps of:
- adjusting at least one of an upper or a lower threshold of a dead-band automatically in response to a present time of day when glare from the sun can occur through the opening;
sensing a level of illumination in the space;
comparing the sensed illumination level in the space to the dead-band; and
automatically adjusting the window treatment to reduce the sun glare in response to the step of comparing.
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Accused Products
Abstract
A system for reducing sun glare through an opening into a space, the system comprising an electrically controllable window treatment operable to alter the amount of daylight entering the space through the opening; a first sensor mounted within the space and characterized by a sensor gain, the first sensor operable to sense a level of illumination in the space; and a control system operable: to compare the sensed illumination level in the space to a dead-band having upper and lower thresholds; to adjust during a time period when glare from the sun can occur through the opening at least one of: (a) the upper threshold of the dead-band, (b) the lower threshold of the dead-band, and (c) the sensor gain of the first sensor; and to adjust the window treatment in response to the sensed level of illumination to reduce the sun glare.
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Citations
14 Claims
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1. A method for reducing sun glare through an opening into a space, wherein the amount of daylight is sensed by a first sensor and selectively alterable by an electrically controllable window treatment, the method comprising the steps of:
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adjusting at least one of an upper or a lower threshold of a dead-band automatically in response to a present time of day when glare from the sun can occur through the opening; sensing a level of illumination in the space; comparing the sensed illumination level in the space to the dead-band; and automatically adjusting the window treatment to reduce the sun glare in response to the step of comparing. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification