Patent ID: 8138690

Claim:
A lighting fixture to provide variable occupancy-based lighting, the lighting fixture comprising: a housing; at least one occupancy sensor, disposed in or coupled to the housing, to provide occupancy information; a plurality of light emitting diode (LED) light bars disposed in the housing to provide the variable occupancy-based lighting at a plurality of light levels; a power management module (PMM), disposed in the housing and operatively coupled to the at least one occupancy sensor and the plurality of LED light bars, to adjust the variable occupancy-based lighting based at least in part on the occupancy information provided by the at least one occupancy sensor, the power management module including: a memory to store lighting parameters, wherein the lighting parameters include at least an active power output level of the plurality of light levels and an inactive power output level of the plurality of light levels; and a digital light agent controller to implement a state machine to analyze the occupancy information and control the plurality of LED light bars based on the lighting parameters in the memory so as to provide the variable occupancy-based lighting at the active power output level of the plurality of light levels or the inactive power output level of the plurality of light levels; and a meter circuit, operatively coupled to the digital light agent controller and the plurality of LED light bars, to determine an energy usage by the plurality of LED light bars.