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METHOD OF CONTROLLING A MOTORIZED WINDOW TREATMENT TO SAVE ENERGY

  • US 20120261079A1
  • Filed: 03/08/2012
  • Published: 10/18/2012
  • Est. Priority Date: 03/11/2011
  • Status: Abandoned Application
First Claim
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1. A motor drive unit for a motorized window treatment having a covering material adapted to be mounted in a room next to a window, the covering material adapted to be controlled between a fully-open position and a fully-closed position to control the amount of the window covered by the covering material, the motor drive unit comprising:

  • a window-side temperature sensor adapted to measure an external temperature representative of the temperature outside the window; and

    a controller coupled to the window-side temperature sensor for determining the external temperature representative of the temperature outside the window, the controller operable to compare the external temperature to an internal temperature to determine whether heat is flowing in or out of the room though the window, the interior temperature representative of the temperature in the room in which the window treatment is installed, the controller further operable to determine a present time of the day and year in response to a measured characteristic;

    wherein the controller operates in an eco-mode to automatically control the amount of the window covered by the covering material in response to the present time of the year and whether heat is flowing in or out of the room though the window to save energy.

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