Hubbell Incorporated
SYSTEMS AND METHODS FOR DAYLIGHT HARVESTING

Abstract:

A lighting system including a driver providing a first drive signal and a second drive signal; an LED array coupled to the driver and configured to receive the first second drive signals; a sensor positioned to sense light intensity for a zone; and an electronic controller. The electronic controller configured to control the driver to provide the first drive signal to the LED array; receive, from the sensor, a first light intensity; retrieve from the memory a task-to-sensor ratio for the sensor; retrieve from the memory a non-useful light intensity; determine an artificial light intensity based on first drive signal and the task-to-sensor ratio; determine the second drive signal based on a desired light intensity for the zone, the non-useful natural light intensity, and the artificial light intensity; and control the driver to provide the second drive signal to the LED array.