US 12,405,583 B2
Method of controlling a motorized window treatment
Brian Michael Courtney, Bethlehem, PA (US); Timothy Gill, Bethlehem, PA (US); and Shilpa Sarode, Bethlehem, PA (US)
Assigned to LUTRON TECHNOLOGY COMPANY LLC, Coopersburg, PA (US)
Filed by LUTRON TECHNOLOGY COMPANY LLC, Coopersburg, PA (US)
Filed on Mar. 13, 2024, as Appl. No. 18/603,601.
Application 18/603,601 is a continuation of application No. 17/932,354, filed on Sep. 15, 2022, granted, now 11,960,260.
Application 17/932,354 is a continuation of application No. 16/883,395, filed on May 26, 2020, granted, now 11,467,548, issued on Oct. 11, 2022.
Application 16/883,395 is a continuation of application No. 15/799,461, filed on Oct. 31, 2017, granted, now 10,663,935, issued on May 26, 2020.
Application 15/799,461 is a continuation of application No. 13/838,876, filed on Mar. 15, 2013, granted, now 9,933,761, issued on Apr. 3, 2018.
Claims priority of provisional application 61/731,844, filed on Nov. 30, 2012.
Prior Publication US 2024/0345555 A1, Oct. 17, 2024
Int. Cl. G05B 15/02 (2006.01); E06B 9/32 (2006.01); E06B 9/68 (2006.01)
CPC G05B 15/02 (2013.01) [E06B 9/32 (2013.01); E06B 9/68 (2013.01); E06B 2009/6809 (2013.01); E06B 2009/6827 (2013.01); Y02A 30/24 (2018.01); Y02B 80/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling a motorized window treatment, the method comprising:
comparing a light level measured by at least one sensor to a stored light level value;
if a total light level measured by the at least one sensor differs from the stored light level value, then:
setting a cloudy-day threshold value to a first threshold value if a solar elevation angle is greater than a solar elevation cut-off value; and
determining the cloudy-day threshold value as a function of the solar elevation angle if the solar elevation angle is less than the solar elevation cut-off value; and
operating the motorized window treatment in a first mode if the light level measured by the at least one sensor is less than a second threshold value.