Distributed lighting networks

摘要

Described herein is an autonomous distributed lighting network which comprises a plurality of luminaires for providing lighting levels in accordance with idle dimming profiles, at least one sensor for sensing ambient conditions, and a communications network. Luminaire nodes, sensor nodes, a timer node and a controller node are connectable to the communications network. Each luminaire node is associated with a luminaire and is operable for receiving broadcast messages from the communications network, the luminaire overriding its normal idle dimming profile in response to an appropriate broadcast message. Each sensor node is associated with at least one sensor device and transmits broadcast messages onto the communications network in accordance with events sensed by each related sensor device. A timer node, if present, provides time synchonisation for the luminaires within the network. In addition, a controller node is used for set up and maintenance of the network.

主权项

1. A distributed lighting network comprising:
a plurality of luminaires, each luminaire comprising a luminaire controller that is associated with a luminaire node; at least one sensor device that is associated with a sensor node; and a communications network that is connected to each luminaire node and to each sensor node; wherein: each luminaire node is configured to be connected to the communications network for receiving messages therefrom; each sensor node is configured to be connected to the communications network for transmitting messages thereto, each sensor node being configured for transmitting a message onto the communications network in response to an event being detected by an associated sensor device; and each luminaire controller is configured to store thereon an idle dimming profile comprising different lighting levels for different times of night and an event dimming profile comprising lighting levels which are increased with respect to the lighting levels of the idle dimming profile, and to select autonomously the event dimming profile to override the idle dimming profile in accordance with an appropriate message received at an associated luminaire node, each of the idle dimming profile and the event dimming profile being aligned relative to a middle of the night value.