Control system for dimmable windows
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United States of America Patent
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Apr 28, 2015
Grant Date -
Feb 21, 2013
app pub date -
Oct 22, 2012
filing date -
Mar 30, 2007
priority date (Note) -
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Abstract
Electrically dimmable windows for aircraft are powered by energy harvesting devices on-board the aircraft. The harvested energy is stored and used to control the opacity of the windows based on individual window opacity settings selected either by passengers or a cabin attendant. Each window has an associated control circuit that controls the electrical power applied to the window based on the selected opacity setting. The control circuit includes a low energy usage processor that remains in a sleep mode until a change in the opacity setting is detected. Each control circuit may include a radio transceiver that receives control signals from a transmitter operated by the cabin attendant in order to simultaneously remotely control the opacity settings of multiple windows.
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