Device for Lighting a Room

A controller unit (2) for controlling the lighting in a room, the controller unit comprising:

• processing means,
• one or more light measuring cells (3) communicatively connected to the processing means, and
• means for communicative connecting the controller unit to one or more luminaires (5), the luminaires being communicatively connected in an addressable digital lighting system,
• wherein the processing means is programmed to automatically assign a digital address to each luminaire and further to automatically identify a spatial position of each luminaire and thereby automatically provide a relationship between the digital address and the spatial position of each luminaire.

A method for identification of an individually addressable luminaire in a room, the method comprising the following steps:

• a) assigning randomly digital addresses to each of the addressable luminaires,
• b) turning off all the luminaires,
• c) turning on, a first luminaire corresponding to the first digital address and measuring by using a light detector the light intensity of the incident light and/or the direction from where the incident light originates, then turning off the first luminaire,
• d) turning on a next luminaire corresponding to the next digital address and measuring the light intensity of the incident light and/or the direction from where the incident light originates, then turning off the next luminaire,
• e) repeating step d) until all light intensities and/or directions have been measured, determining the spatial positions of each of the luminaires from the measured light intensities and/or direction, and
• thereby providing a matrix representing the digital addresses and corresponding spatial positions of all the luminaires.