US Patent 7608807 Closed loop daylight harvesting light control system having auto-calibration
Patent 7608807 was granted and assigned to Leviton (company) on October, 2009 by the United States Patent and Trademark Office.
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An apparatus and method for enabling an automatic calibration sequence for a light control system having a daylight harvesting scheme is disclosed herein. An ambient light sensor connects to a detection circuit for detecting the amount of ambient light within a given zone. A microprocessor connects between the detection circuit and a dimming circuit for providing control to initiate dimming and to start the auto-calibration sequence. Responsive to the amount of ambient light detected, the dimming circuit controls the power supplied to a plurality of electrical loads. A storage unit connects to the microprocessor for storing minimum light levels assessed during the auto-calibration sequence wherein the ambient light levels are monitored for a predetermined amount of time to determine the lowest level of ambient light generated for the purpose of setting and storing a target voltage level associated with such.
US Patent 07608807 Closed loop daylight harvesting light control system having auto-calibration US Patent 7608807 Closed loop daylight harvesting light control system having auto-calibration
US Patent 07608807 Closed loop daylight harvesting light control system having auto-calibration
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