SYSTEM AND METHOD FOR OCCUPANCY SENSING WITH ENHANCED FUNCTIONALITY

摘要

A system and method provide fail-safe operation of a lighting system. A lighting level detector is used to obtain a baseline lighting level for a low-intensity light. If the detector measures less than the baseline level when an occupancy sensor determines the space is unoccupied, a high-intensity light is energized and an indication is provided to a user that the low-intensity light has failed. A method provides daylighting operation of a lighting system. An occupancy sensor can have Wi-Fi functionality to enable remote configuration of the sensor. A line voltage occupancy sensor can include an interface with low voltage devices. An occupancy sensor can include an integral interface to enable an external control system to override the sensor's normal logic under emergency conditions. An occupancy sensor can include an active temperature compensation feature. An occupancy sensor can also incorporate an automatically adjustable coverage area.

主权项

1. A load control system, comprising:
an occupancy sensor for sensing an occupancy condition of a monitored area; and a light sensor for providing a lighting signal representative of a lighting level of the monitored area; wherein, regardless of the occupancy condition of the monitored area, an associated load is energized when the lighting signal indicates the lighting level is below a predetermined threshold lighting level.