OCCUPANCY SENSOR WITH BUILT-IN POWER PACK TO OPERATE MULTIPLE SENORS

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 line voltage occupancy sensor comprising:
an occupancy sensing element for sensing an occupancy condition of a monitored area; a load control device communicatively coupled to the occupancy sensing element, the load control device including a relay for controlling a load in response to signals received from the occupancy sensing element; an input interface for connecting to a building main power supply for receiving line AC voltage from the building main power supply to power the occupancy sensor; an AC/DC converter for converting the AC voltage to low voltage DC power; and a low voltage output interface for coupling to DC power wires for transmitting low voltage DC power to one or more low voltage occupancy sensors for powering the low voltage occupancy sensors.