发明名称 |
METHOD OF CONTROLLING A MOTORIZED WINDOW TREATMENT |
摘要 |
A method comprises measuring a light intensity at a window; determining if the light intensity exceeds a cloudy-day threshold; operating in a sunlight penetration limiting mode to control the motorized window treatment to control the sunlight penetration distance in the space; enabling the sunlight penetration limiting mode if the light intensity is greater than the cloudy-day threshold; and disabling the sunlight penetration limiting mode if the total lighting intensity is less than the cloudy-day threshold. The cloudy-day threshold is maintained at a constant threshold if a calculated solar elevation angle is greater than a predetermined solar elevation angle, and the cloudy-day threshold varies with time if the calculated solar elevation angle is less than the predetermined solar elevation angle. The cloudy-day threshold is a function of the calculated solar elevation angle if the calculated solar elevation angle is less than the predetermined solar elevation angle. |
申请公布号 |
US2014156079(A1) |
申请公布日期 |
2014.06.05 |
申请号 |
US201313838876 |
申请日期 |
2013.03.15 |
申请人 |
Lutron Electronics Co., Inc. |
发明人 |
Courtney Brian Michael;Gill Timothy;Sarode Shilpa |
分类号 |
G05B15/02 |
主分类号 |
G05B15/02 |
代理机构 |
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代理人 |
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主权项 |
1. A method of controlling a motorized window treatment positioned adjacent to a window on a wall of a building, the method comprising:
sampling a light intensity outside of the building; computing a rate of change of the light intensity; automatically controlling movement of the window treatment in a sunny operation mode if the absolute value of the computed rate of change is at least a first threshold value; and automatically controlling movement of the window treatment in a cloudy operation mode if the absolute value of the computed rate of change is less than the first threshold value and the light intensity is less than a second threshold value.
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地址 |
Coopersburg PA US |