Electrically controllable window treatment system to control sun glare in a space
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A technology for controlling systems and spaces, applied in the field of indoor lighting
Active Publication Date: 2011-08-31
LUTRON ELECTRONICS CO INC
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Space can be divided into lighting zones
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[0059] Referring now to the accompanying drawings, figure 1 is a block diagram of an embodiment of the present invention for controlling illuminance and for reducing sun glare in a space such as a room where daylight and artificial light act as light sources. System 10 includes a central processing unit 100, which may be a Lutron GRAFIK Central Lighting Processor, eg Model No. GR6MXINP. The central processing unit 100 has a dimming panel 110 connected thereto, and the dimming panel 110 has various lighting loads 120, which can be any type of light source, including but not limited to incandescent, fluorescent, HID, etc. (High Intensity Discharge), Neon, LED (Light Emitting Light Emitting Diode), LV (Low Voltage), and the lighting load can be controlled by the dimming panel 110 in response to commands from the central processing unit 110 via digital link 137 communication . The dimming panel can be Lutron type GP12-1203-ML-15. The light sensor interface 130 is connected to...
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Abstract
The invention relates to an electrically controllable window treatment system to control sun glare in a space. A system for reducing sun glare through an opening into a space comprises: at least one electrically controllable window treatment for at least one opening for allowing daylight into the space, the window treatment selectively altering the amount of daylight entering the space through the opening; a sensor for sensing daylight illumination entering the space; a control system controlling the at least one window treatment; and the control system operating to adjust the window treatment in the event of sun glare through the opening to reduce the sun glare, and such that when the sun glare has been minimized, the control system stops the adjustment of the at least one window treatment, wherein the control system employs a dead-band having upper and lower set points such that if the sensed illumination in the space is outside the dead-band, the window treatment is adjusted to bring the illumination level in the space within the dead-band and during a time period when glare from the sun through the opening can occur, at least one set point of the dead- band can be varied to reduce glare.
Description
[0001] This application is a divisional application of the Chinese patent application with the application number 200480011312.7, the application date is March 24, 2004, and the invention title is "System for Controlling Daylight and Artificial Lighting and Solar Glare in Space". [0002] Cross-references to related applications [0003] This application claims U.S. Provisional Application S.N. 60 / 457,276, filed March 24, 2003, entitled "Multi-Zone Closed Loop Illumination Maintenance System," and the filed November 15, 2003, entitled "System To BENEFITS OF, AND PRIORITY TO, U.S. PROVISIONAL APPLICATION S.N.60 / 529,996 FOR CONTROL DAYLIGHT AND ARTIFICIAL ILLUMINATION AND SUN GLARE IN SPACE, AND RELATED TO U.S. APPLICATION S.N.10 / 660,061, FILED SEPTEMBER 11, 2003, TITLE "MOTORIZED WINDOW SHADECONTROL" , and U.S. Patent Application No. 4,236,101, entitled "Light Ccontrol System," issued November 25, 1980, the entire contents of which are hereby incorporated by reference. technica...
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Application Information
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