Method and Apparatus for Multiple Sensor Lighting Control Systems for Daylight Harvesting

A multiple sensor lighting control system for a facility with two or more lighting zones, the system comprising:

• an illumination control system including a controller for controlling one or more illumination sources in each of the two or more lighting zones;
• at least one sensor array in each of the two or more lighting zones, each sensor array including a natural light sensor responding to uncontrolled illumination entering the lighting zone and a composite light sensor responding to both uncontrolled illumination and controlled illumination within the lighting zone;
• a plurality of lighting algorithms, with at least one lighting algorithm corresponding to each of the two or more lighting zones;
• wherein the controller is operably connected to the at least one sensor array in each of the at least two or more lighting zones to determine the controlled luminance in each lighting zone corresponding to each sensor array, and then determine a composite light setpoint to permit control of the one or more illumination sources with only the composite light sensor.