Sensor control device
Some embodiments are directed to a sensor control device ( 200 ) for a connected lighting system ( 100 ), said connected lighting system comprising multiple luminaires ( 122 ) arranged in a region, the sensor control device obtaining from received sensor data the occupant locations in sub-regions associated with the sensor data and/or multiple illuminance levels for multiple points in the sub-region, and defines a virtual sensor at a virtual sensor location. The occupancy state and/or illuminance level from the virtual sensor are used to control a luminaire of the multiple luminaires, the luminaire covering the virtual sensor location in the region.
1. A sensor control device for a connected lighting system, said connected lighting system comprising multiple luminaires arranged in a region, the sensor control device comprising
a receiving unit arranged to receive sensor data from multiple sensors arranged in the region, each sensor being associated with a sub-region comprised in the region, the sensor data being indicative of one or more occupant locations of occupants in the sub-region and/or multiple illuminance levels at multiple different points in the sub-region,
a virtual sensor location storage storing a virtual sensor location in the region of a virtual sensor for occupancy and/or illuminance,
a processing unit arranged to
obtain from the received sensor data the occupant locations in the respective sub-region associated with the sensor data and/or the multiple illuminance levels for the multiple points in the respective sub-region associated with the sensor data,
integrate occupancy states for the multiple occupant locations and/or the multiple illuminance levels for the multiple points into an integrated region-wide occupancy and/or illuminance map,
define a virtual sensor at the virtual sensor location and compute an occupancy state and/or illuminance level for the virtual sensor from the virtual sensor location and the integrated occupancy and/or illuminance map,
use the occupancy state and/or illuminance level from the virtual sensor to control a luminaire of the multiple luminaires, the luminaire covering the virtual sensor location in the region.
2. The sensor control device as in claim 1 , wherein the processing unit is arranged to
convert the occupant locations and/or multiple points in the sub-regions from sub-region-wide coordinates to region-wide coordinates before integrating the occupancy states for the multiple occupant locations and/or the multiple illuminance levels for the multiple points.
3. The sensor control device for a connected lighting system as in claim 1 , comprising
a luminaire location storage storing a location for the multiple luminaires, the processing unit being arranged to select a luminaire from the multiple luminaires having an illumination coverage comprising the virtual sensor location.
4. The sensor control device for a connected lighting system as in claim 1 , wherein the virtual sensor location is selected in an area around a luminaire, the area being defined as the area in which the light intensity of the controlled luminaire contributes at least a predetermined percentage of the total light intensity at the virtual sensor location.
5. The sensor control device for a connected lighting system as in claim 1 , wherein the sensor data comprises a sequence of sub-region-wide coordinates indicating the occupant locations and/or of illuminance levels for the multiple points, occupant locations and/or points being relative to the sensor.
6. The sensor control device for a connected lighting system as in claim 1 , wherein at least one of the multiple sensors is a multi-modal sensor arranged to provide sensor data indicative for multiple distinct occupant locations and for multiple distinct illuminance levels at multiple different points in the sub-region.
7. The sensor control device for a connected lighting system as in claim 1 , wherein a first and second sub-region which are associated with a first and second sensor overlap, the processor being arranged to integrate occupancy status and/or illuminance sensor values of points in the overlapping part of the first and second region by applying a consolidation routine arranged to consolidate the sensor data in the overlapping part of the first and second sub-region.
8. The sensor control device for a connected lighting system as in claim 1 , wherein the processor circuit is arranged to
compute an occupancy state from the virtual sensor location and the integrated occupancy map for the region, by selecting from the integrated map occupancy states obtained for points in a further sub-region around the virtual sensor location, the virtual sensor being assigned an occupied state if any one of the selected occupancy states indicates occupancy, and/or
compute an illuminance level from the virtual sensor location and the integrated illuminance map for the region, by obtaining from the integrated map illuminance levels obtained for points in a further sub-region around the virtual sensor location, the virtual sensor being assigned an illuminance level by interpolating from the selected illuminance levels.
9. The sensor control device for a connected lighting system as in claim 1 , wherein the lighting system is configured with multiple control zones, luminaires of the connected lighting system being assigned to a control zones for joint control of said luminaires, control of at least one of the control zones being dependent upon the virtual sensor.
10. The sensor control device for a connected lighting system as in claim 9 , wherein the lighting system comprises a lighting controller configured to actuate at least part of the luminaires, the lighting controller having a sensor input configured to receive sensor values, the lighting controller being configured with a control mapping indicating the assignment of luminaires to control zones and the dependence of luminaires in a control zone to sensor values received at the input, the processor circuit of the sensor control device being arranged to provide the sensor input with sensor values, at least one of which is a sensor value computed for a virtual sensor.
11. The sensor control device for a connected lighting system as in claim 9 , wherein the processor circuit is arranged to
select from the integrated occupancy map an area in which the integrated occupancy map indicates occupancy,
select a virtual sensor location in the area for the virtual sensor,
select luminaires having a position is in or near the area from a luminaire position database,
define a control mapping in which a control zone comprises the selected luminaires, and in which the control zone is controlled by the virtual sensor,
configure the lighting system, e.g., a lighting controller, with the control mapping.
12. A connected lighting system comprising the sensor control device as in claim 1 , the connected lighting system comprising
multiple sensors arranged in the region, each sensor being associated with a sub-region comprised in the region, and comprising a transmitter for sending sensor data to the sensor control device, the sensor data being indicative of one or more occupant locations of occupants in the sub-region and/or multiple illuminance levels at multiple different points in the sub-region,
multiple luminaires arranged in the region, the luminaires comprise a receiver for receiving luminaire actuation commands from the lighting system.
13. A sensor control method for a connected lighting system, said connected lighting system comprising multiple luminaires arranged in a region, the sensor control method comprising
receiving sensor data from multiple sensors arranged in the region, each sensor being associated with a sub-region comprised in the region, the sensor data being indicative of one or more occupant locations of occupants in the sub-region and/or multiple illuminance levels at multiple different points in the sub-region,
storing a virtual sensor location in the region of a virtual sensor for occupancy and/or illuminance,
obtaining from the received sensor data the occupant locations in the respective sub-region associated with the sensor data and/or the multiple illuminance levels for the multiple points in the respective sub-region associated with the sensor data,
converting the occupant locations and/or multiple points in the sub-regions to region-wide coordinates and integrate occupancy states for the multiple occupant locations and/or the multiple illuminance levels for the multiple points into an integrated region-wide occupancy and/or illuminance map,
defining a virtual sensor at the virtual sensor location and compute an occupancy state and/or illuminance level for the virtual sensor from the virtual sensor location and the integrated occupancy and/or illuminance map,
using the occupancy state and/or illuminance level from the virtual sensor to control a luminaire of the multiple luminaires, the luminaire covering the virtual sensor location in the region.
14. A non-transitory computer readable medium storing instructions to cause one or more computer processors to perform the method according to claim 13 .