Patent Description:
Home lighting systems enable users to configure and control lighting devices via a wireless network. Typically, users have a single lighting system installed. It may, however, occur that multiple lighting systems have been installed. These lighting systems may for example have been manufactured by different manufacturers. A first lighting system may be controllable and/or configurable via a first software application, and a second lighting system may be controllable and/or configurable via a second software application. Operating/configuring two of those systems may be quite cumbersome, because it requires that a user switches between these software applications. Hence, it may be desirable to merge both lighting systems into a single lighting system.

If a user would want to add lighting devices of a first lighting system to another lighting system, the user has to manually add the lighting devices of the first lighting system to the other lighting system, for instance via a software application of the other lighting system. This can be a rather cumbersome process.

<CIT> discloses networked intelligent lighting devices and other elements con-nected to the network of a lighting system readily adaptable to desirable networking arrange-ments as well as logical functional groups, for example by each storing communication provi-sioning data and/or configuration data for logically associating system elements into one or more groupings or sub-networks.

It is an object of the present invention to provide a system and a method for automatically merging multiple lighting systems.

According to a first aspect of the present invention, the object is achieved by a method according to claim <NUM>.

The first and the second lighting system are located in the same space. Each first lighting device of the first lighting system may be located in a respective area of the space. The one or more signals are obtained, which are indicative of the location of a second lighting device relative to a first lighting device. Then, it is determined whether the second lighting device is located within a predetermined proximity range of the first lighting device. If so, the second lighting device is associated with an area with which the first lighting device is associated. If not, the second lighting device may not be associated with that area (but for instance with another area, or with no area at all). This association is then stored in a memory of the first lighting system, thereby providing a method for automatically merging multiple lighting systems. This is beneficial, because it enables associating second lighting devices of the second lighting system with areas in which one or more first lighting devices of the first lighting system are located. This also reduces the manual input required for merging multiple lighting systems. During this process, the second lighting device is connected to the first lighting system such that the second lighting device is controllable by the first lighting system. This step of connecting the second lighting device to the first lighting system may be performed before or after any step of the method.

The method may further comprise: obtaining, from the first lighting control system, one or more lighting control rules associated with the first lighting device, associating the second lighting device with the one or more lighting control rules, and storing the association in the memory. The one or more lighting control rules are control rules for controlling the first lighting device. These rules may, for example, be time-based lighting control routines, sensor-based lighting control rules, user input-based lighting control rules, etc. The one or more lighting control rules may be control rules for controlling lighting devices in the area. By associating the one or more lighting control rules with the second lighting device (which rules are also associated with the first lighting device), the second lighting device is controlled in a similar way as the first lighting device and the second lighting device behaves the same as a lighting device located in the same area. This further reduces the manual input required for merging and configuring multiple lighting systems.

The one or more signals may be signals communicated between the first lighting device and the second lighting device. The method may comprise: determining that the second lighting device is located within the predetermined proximity range based on signal characteristics of the signals communicated between the first lighting device and the second lighting device. The signals may, for example, be radio signals, audio signals, light, etc. A distance between the first lighting device and the second lighting device may be determined based on the signal characteristics (e.g. based on an RSSI of the signal, based on the Time of Flight of a signal, the intensity of the signal, etc.). The predetermined proximity range may for example be a threshold distance, and if the distance between the first lighting device and the second lighting device does not exceed the threshold distance, it may be determined that the second lighting device is located within the predetermined proximity range.

The one or more signals may comprise one or more first control signals indicative of control of the first lighting device and one or more second control signals indicative of control of the second lighting device, and the method may comprise: determining a presence of a temporal correlation between the control of the first lighting device and the control of the second lighting device, and determining that the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. In other words, when the first device and the second device are controlled at substantially the same time, it may be determined that the second lighting device is located within the predetermined proximity range of the first lighting device.

The one or more signals may comprise a first user-defined name of the first lighting device and a second user-defined name of the second lighting device, and the method may comprise: comparing the first user-defined name to the second user-defined name, and determining that the second lighting device is located within the predetermined proximity range of the first lighting device if the first user-defined name is similar to the second user-defined name. The first and second user-defined names may be compared to determine similarities, and if the first user-defined name is sufficiently similar to the second user-defined name, it may be determined that the first lighting device and the second lighting device are located in the same area.

The one or more signals may comprise a first user-defined name descriptive of the area and a second user-defined name of the second lighting device, and the method may comprise: comparing the first user-defined name to the second user-defined name, and determining that the second lighting device is located within the predetermined proximity of the first lighting device if the first user-defined name is similar to the second user-defined name. If the user-defined name of the second lighting device corresponds to the name of the area, it may be determined that the first lighting device and the second lighting device are located in the same area.

The first lighting device may comprise a first sensor and the second lighting device may comprise a second sensor. The one or more signals may comprise first sensor data from the first sensor and second sensor data from the second sensor. The method may comprise: comparing the first sensor data to the second sensor data, and determining that the second lighting device is located within the predetermined proximity range of the first lighting device if the first sensor data is similar to the second sensor data. The first sensor and the second sensor may be sensors for detecting environmental parameters (e.g. light levels, temperature levels, noise/sound, humidity, user presence, etc.). If the first sensor data corresponds to (is sufficiently similar to) the second sensor data, it may be determined if the second lighting device is located within the predetermined proximity range of the first lighting device. The method may further comprise: determining a presence of a temporal correlation between the first sensor data and the second sensor data, and determining that the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. In other words, when sensor values of the first and second sensors change at the same time, it may be determined that the second lighting device is located within the predetermined proximity range of the first lighting device.

The first lighting device may comprise a light sensor and the one or more signals may comprise a sensor signal from the light sensor indicative of a change of the light level in the space and a control signal indicative of control of the second lighting device. The method may comprise: determining a presence of a temporal correlation between the control of the second lighting device and the sensor signal, and determining that the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. Additionally or alternatively, the second lighting device may comprise a light sensor and wherein the one or more signals comprise a sensor signal from the light sensor indicative of a change of the light level in the space and a control signal indicative of control of the first lighting device. The method may further comprise: determining a presence of a temporal correlation between the control of the first lighting device and the sensor signal, and determining that the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. In other words, at least one of the lighting devices may comprise a light sensor, and when a change in light in the environment corresponds to a change of the light output of the other lighting device, it may be determined that the lighting devices are within the predetermined proximity range.

The method may further comprise: requesting a user to confirm if the second lighting device is located in the area, and executing associating the second lighting device with the area only if the confirmation is positive. This is beneficial, because the user simply has to confirm (or unconfirm) if the second lighting device is located in the area of the first lighting device, thereby reducing the chance of erroneous associations.

The method may further comprise: rendering, on a display, virtual representations of the area, the first lighting device and the second lighting device. The virtual representations may be rendered to indicate that the first lighting device and the second lighting device have been associated with the same area.

The method may further comprise: controlling the second lighting device by changing its light output after the second lighting device has been associated with the area. This is beneficial because the user is notified that the second lighting device has been associated with the area. Additionally or alternatively, the method may comprise: controlling the first lighting device by changing its light output after the second lighting device has been associated with the area. This is beneficial because the user is notified that the first and second lighting device both have been associated with the (same) area.

According to a second aspect of the present invention, the object is achieved by a computer program product for a computing device, the computer program product comprising computer program code to perform the method of any preceding claim when the computer program product is run on a control system according to claim <NUM>.

According to a third aspect of the present invention, the object is achieved by a control system according to claim <NUM>.

It should be understood that the computer program product and the control system may have similar and/or identical embodiments and advantages as the above-mentioned methods.

<FIG> shows a system <NUM> comprising a control system <NUM> for merging a first lighting system with a second lighting system. The first lighting system comprises a plurality of first lighting devices <NUM>, <NUM> and a first lighting control system <NUM> for controlling the plurality of first lighting devices <NUM>, <NUM>. The second lighting system comprises a plurality of second lighting devices <NUM>, <NUM> and a second lighting control system <NUM> for controlling the plurality of second lighting devices <NUM>, <NUM>. The control system <NUM> comprises an input <NUM> configured to obtain one or more signals, which one or more signals are indicative of a location of a second lighting device of the plurality of second lighting devices <NUM>, <NUM> relative to a first lighting device of the plurality of first lighting devices <NUM>, <NUM>. The control system <NUM> comprises a processor <NUM> configured to determine if the second lighting device is located within a predetermined proximity range of the first lighting device based on the one or more signals, to obtain, from the first lighting control system <NUM>, information indicative of an association between the first lighting device and an area in the space, to associate, if the second lighting device is located within the predetermined proximity range, the second lighting device with the area associated with the first lighting device, to store the association in a memory <NUM> of the first lighting control system <NUM>, and to connect the second lighting device to the first lighting control system <NUM> such that the second lighting device can be controlled by the first lighting control system <NUM>.

The first and second lighting systems may be lighting systems of different manufacturers or of the same manufacturer. The first and second lighting systems comprise respective lighting control systems <NUM>, <NUM> for controlling the first lighting devices <NUM>, <NUM> and the second lighting devices <NUM>, <NUM>, respectively. The lighting control systems <NUM>, <NUM> may each be comprised in a lighting control device, such as a bridge, a hub, a smartphone, a (remote) server, etc. The first lighting control system <NUM> may comprise a communication unit <NUM> configured to communicate lighting control commands to the first lighting devices <NUM>, <NUM>. Similarly, the second lighting control system <NUM> may comprise a communication unit <NUM> configured to communicate lighting control commands to the second lighting devices <NUM>, <NUM>. The communication units <NUM>, <NUM> may be configured to communicate with the respective lighting devices via one or more (wireless) communication protocols, such as Zigbee, Bluetooth, Wi-fi, Thread, Z-Wave, etc., and/or via the internet when for example the respective lighting control system is comprised in a remote server. The lighting devices <NUM>, <NUM>, <NUM>, <NUM> may comprise receivers for receiving the control commands from the respective communication units <NUM>, <NUM>. The lighting devices <NUM>, <NUM>, <NUM>, <NUM> each comprise a processing unit for processing control commands to control one or more (LED) light sources of the respective lighting device.

The control system <NUM> may be comprised in any type of device configured to configure a lighting system. Depending on the system architecture of the system <NUM>, the control system <NUM> may, for example, be comprised in a smartphone, in a bridge, in a remote server, or for example in the first lighting control system. Depending on the system architecture of the system <NUM>, the processor <NUM> may comprise a communication unit <NUM> configured to communicate with the first and/or second lighting control system <NUM>, <NUM>. For instance, when the control system <NUM> is comprised in a device separate from the first and/or second lighting control system <NUM>, <NUM>, the control system <NUM> may comprise a communication unit <NUM>. The communication unit <NUM> may be configured to communicate with the communication units <NUM>, <NUM> of the lighting control systems <NUM>, <NUM>, via one or more (wireless) communication protocols. It should be understood that these are mere examples and that the skilled person is able to conceive alternative system architectures without departing from the scope of the appended claims.

In the example of <FIG>, a primary first lighting device <NUM> of the plurality of first lighting devices <NUM>, <NUM> of the first lighting system is located in a first area <NUM> of the space, a further first lighting device <NUM> of the plurality of first lighting devices <NUM>, <NUM> of the first lighting system is located in a second area <NUM> of the space, a second lighting device <NUM> of the plurality of second lighting devices <NUM>, <NUM> of the second lighting system is located in the first area <NUM> of the space and a further second lighting device <NUM> of the plurality of second lighting devices <NUM>, <NUM> of the second lighting system is located in the second area <NUM> of the space. The space may, for example, be a building, and the areas <NUM>, <NUM> may, for example, be separate rooms. In another example, the areas <NUM>, <NUM> may be different parts of a room.

The control system <NUM> comprises an input <NUM> configured to obtain one or more signals, which one or more signals are indicative of a location of a second lighting device of the plurality of second lighting devices <NUM>, <NUM> relative to a first lighting device of the plurality of first lighting devices <NUM>, <NUM>. The input <NUM> may be configured to obtain the one or more signals from, for example, a memory storing the signals, from the first or second lighting system controller <NUM>, <NUM>, from a positioning system, from one or more sensors, etc. Different types of signals may be indicative of the location of the second lighting device relative to the first device. Examples of such signals are described below.

The control system <NUM> comprises a processor <NUM> (e.g. circuitry, a microcontroller, etc.) configured to determine if the second lighting device is located within a predetermined proximity range of the first lighting device based on the one or more signals. In the example of <FIG>, the processor <NUM> may determine that second lighting device <NUM> is located within a predetermined proximity range of first lighting device <NUM> based on the one or more signals.

The processor <NUM> is further configured to obtain, from the first lighting control system <NUM>, information indicative of an association between the first lighting device and an area in the space. This information may, for example, be stored in a memory <NUM> of the first lighting control system <NUM>. The memory <NUM> may store information indicative of associations of the first lighting devices <NUM>, <NUM> of the first lighting system and areas <NUM>, <NUM> of the space, for instance in a look-up table. In the example of <FIG>, the processor <NUM> may obtain information indicative of an association between first lighting device <NUM> and area <NUM> in the space (and information indicative of an association between a further first lighting device <NUM> and area <NUM> in the space).

The processor <NUM> is further configured to associate, if the second lighting device is located within the predetermined proximity range, the second lighting device with the area associated with the first lighting device, and to store the association in the memory <NUM> of the first lighting control system <NUM>. In the example of <FIG>, the processor <NUM> may, after determining that second lighting device <NUM> is located within the predetermined proximity range of first lighting device <NUM>, associate second lighting device <NUM> with area <NUM>, and store the association in memory <NUM> of the first lighting control system <NUM> by communicating data indicative of the association to the first lighting control system <NUM>. The first lighting control system <NUM> may then update its memory, for instance by updating a look-up table, and add the second lighting device <NUM> to area <NUM>. After successful association of the second lighting device <NUM>, the second lighting device <NUM> has been merged with the first lighting system, whereupon the first lighting control system <NUM> may control the second lighting device <NUM>. Similarly, the processor <NUM> may, after determining that the further second lighting device <NUM> is located within the predetermined proximity range of the further first lighting device <NUM>, associate further second lighting device <NUM> with area <NUM>, and store the association in memory <NUM> of the first lighting control system <NUM> by communicating data indicative of the association to the first lighting control system <NUM>.

The processor <NUM> is further configured to automatically connect the second lighting device <NUM> (and the further second lighting device <NUM>) to the first lighting control system <NUM>. This may be performed by providing an identifier, configuration data, network credentials, etc. of the second lighting device to the first lighting control system <NUM>. The second lighting system controller <NUM> may provide data for connecting the second lighting device to the processor <NUM>, the processor <NUM> may obtain data for connecting the second lighting device to the first lighting control system <NUM> from the second lighting device, etc. Techniques for adding lighting devices to a lighting control system are known in the art and will therefore not be discussed in detail.

The processor <NUM> may be further configured to communicate data to the second lighting control system <NUM> to inform the second lighting control system <NUM> that the second lighting device has been added to the first lighting control system <NUM>. The processor <NUM> may, for example, instruct the second lighting control system <NUM> to remove the second lighting device from the second lighting control system <NUM> and/or to remove an association between the second lighting device and an area from the memory <NUM> of the second lighting control system <NUM>.

The processor <NUM> may be configured to obtain, from the first lighting control system <NUM>, one or more lighting control rules associated with the first lighting device. The one or more control rules may be control rules for controlling lighting devices in the area. The control rules may, for example, be lighting control routines (e.g. scheduled light settings), be sensor-based lighting control rules (e.g. lighting control rules that trigger when a sensor detects a value/event), be user input-based lighting control rules (e.g. a user-defined light setting that is activated when a sensor/switch is triggered), etc. The processor <NUM> may be further configured to associate the second lighting device with the one or more lighting control rules and store the association in the memory <NUM> of the first lighting control system <NUM>, such that the first lighting control system <NUM> is configured to control the second lighting device according to the one or more lighting control rules.

The processor <NUM> is configured to determine if the second lighting device is located within a predetermined proximity range of the first lighting device based on the one or more signals. <FIG> shows examples of predetermined proximity ranges <NUM>, <NUM> of respective lighting devices <NUM>, <NUM>. The predetermined proximity range may be defined in various ways, which are described in the following examples.

The one or more signals may be signals communicated between the first lighting device and the second lighting device. The processor <NUM> may be configured to determine if the second lighting device is located within the predetermined proximity range based on signal characteristics of the signals communicated between the first lighting device and the second lighting device. The signals may, for example, be radio frequency (RF) signals, ultrasound/audio signals, light signals (e.g. Visible Light Communication/Li-Fi), etc. The processor <NUM> may be configured to determine a distance between the first lighting device and the second lighting device based on the signal characteristics. The processor <NUM> may, for example, be configured to determine the distance between the first and second lighting device based on a received signal strength indicator (RSSI) of the communicated signal, based on a signal-to-noise (SnR) ratio, based on the Time of Flight (ToF) of a signal, the intensity of the signal (e.g. the light intensity), etc. Techniques for determining distances between lighting devices based on signals communicated between the lighting devices are known in the art and will therefore not be discussed in further detail. The predetermined proximity range may for example be a threshold distance, and, if the distance between the first lighting device and the second lighting device does not exceed the threshold distance, the processor <NUM> may determine that the second lighting device is located within the predetermined proximity range. <FIG> shows an example wherein a first distance <NUM> between a first lighting device <NUM> of a first lighting system and a second lighting device <NUM> of a second lighting system is determined. This first distance <NUM> may be within the threshold distance, and the processor <NUM> may determine that the second lighting device <NUM> is located within the predetermined proximity range of the first lighting device <NUM>. The processor <NUM> may further determine a second distance <NUM> between a further first lighting device <NUM> of the first lighting system and the second lighting device <NUM> of the second lighting system. This second distance may not be within the threshold distance, and the processor <NUM> may determine that the second lighting device <NUM> is not located within the predetermined proximity range of the further first lighting device <NUM>. In <FIG>, the processor <NUM> may for instance determine that further second lighting device <NUM> is located within the predetermined proximity range of further first lighting device <NUM>.

The one or more signals may comprise one or more first control signals indicative of control of the first lighting device and one or more second control signals indicative of control of the second lighting device. The processor <NUM> may be further configured to determine a presence of a temporal correlation between the control of the first lighting device and the control of the second lighting device, and determine that the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. The processor <NUM> may be configured to monitor the presence of the one or more first control signals indicative of control of the first lighting device and the one or more second control signals indicative of control of the second lighting device over a period of time. Based on this (historical) data gathered over a period of time (e.g. days, weeks, months), the processor <NUM> may determine a temporal correlation between control of the first lighting device and control of the second lighting device. It may, for instance, occur that a user typically controls the first lighting device and the second lighting device at the same time (e.g. because they are located in the same room, because they are controlled via the same switch or based on the same voice command, because they are powered/unpowered by the same AC wall switch, etc.). Thus, the processor <NUM> may determine if there is such a temporal correlation to determine that the second lighting device is within the predetermined proximity range of the first lighting device. If no temporal correlation is present (i.e. when control commands are communicated at different moments in time), the processor <NUM> may determine that the second lighting device is not located within the predetermined proximity range of the first lighting device.

The one or more signals may comprise a first user-defined name of the first lighting device and a second user-defined name of the second lighting device. The processor <NUM> may be configured to compare the first user-defined name to the second user-defined name, and determine if the second lighting device is located within the predetermined proximity range of the first lighting device if the first user-defined name is similar to the second user-defined name. The processor <NUM> may, for example, determine that the first user-defined name and the second user-defined name refer to a same area, for instance, "living room". In another example, the processor <NUM> may, for example, determine that the first lighting device has a name "entertainment lamp left" and the second lighting device may have the same prefix "entertainment lamp top", and that the names are similar due to the "entertainment" prefix. Based on these similarities, the processor <NUM> may determine that the second lighting device is located in the same area or close to the first device, and thereby within the predetermined proximity range of the first lighting device.

The one or more signals may comprise a first user-defined name descriptive of the area and a second user-defined name of the second lighting device. The processor <NUM> may be configured to compare the first user-defined name to the second user-defined name, and determine that the second lighting device is located within the predetermined proximity range of the first lighting device if the first user-defined name is similar to the second user-defined name. The area may, for example, have been named "kitchen", and the second lighting device may have been named "kitchen lamp <NUM>". The processor <NUM> may analyze these names and determine that there is a similarity ("kitchen"), and thereby determine that the second lighting device is located within the predetermined proximity range of the first lighting device.

The first lighting device may comprise a first sensor and the second lighting device may comprise a second sensor. The one or more signals may comprise first sensor data from the first sensor and second sensor data from the second sensor. The processor <NUM> may be configured to compare the first sensor data to the second sensor data, and determine if the second lighting device is located within the predetermined proximity range of the first lighting device if the first sensor data is similar to the second sensor data. The first and second sensor may, for example, be sensors for sensing environmental parameters. Examples of sensors include but are not limited to audio sensors, (day)light sensors, temperature sensors, presence sensors, etc. In an example, the sensors may be presence sensors (e.g. a PIR sensor, an RF sensor, a camera, etc.) and the processor <NUM> may compare first sensor data (indicative of presence in the environment of the first lighting device) with second sensor data (indicative of presence in the environment of the second lighting device), and if the presences correspond, the processor <NUM> may determine that the second lighting device is located within the predetermined proximity range of the first lighting device. The sensors may, for example, be temperature sensors and the processor <NUM> may compare first sensor data (e.g. a first temperature of the environment of the first lighting device) with second sensor data (e.g. a second temperature of the environment of the second lighting device), and if the temperatures correspond, the processor <NUM> may determine that the second lighting device is located within the predetermined proximity range of the first lighting device. In another example, the sensors may, for example, be audio sensors (microphones) and the processor <NUM> may compare first sensor data (audio detected by the first audio sensor) with second sensor data (audio detected by the second audio sensor), and if the audio signals correspond, the processor <NUM> may determine that the second lighting device is located within the predetermined proximity range of the first lighting device. It should be understood that these are mere examples of sensors, and that the skilled person is able to design alternatives without departing from the scope of the appended claims. The processor <NUM> may be further configured to determine a presence of a temporal correlation between the first sensor data and the second sensor data, and determine if the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. For instance, when presence is detected at the same moment in time, or when a temperature change is detected at the same moment in time, it may be an indication that the first lighting device and the second lighting device are within each other's proximity. If no temporal correlation is present (i.e. when sensor values change at different moments in time), the processor <NUM> may determine that the second lighting device is not located within the predetermined proximity range of the first lighting device.

The first lighting device may comprise a light sensor and the one or more signals may comprise a sensor signal from the light sensor indicative of a change of the light level in the space and a control signal indicative of control of the second lighting device. The processor <NUM> may be configured to determine a presence of a temporal correlation between the control of the second lighting device and the sensor signal, and determine that the second lighting device is located within the predetermined proximity range of the first lighting device if the temporal correlation is present. Additionally or alternatively, the second lighting device may comprise the light sensor and it may detect a change of the light level in the environment when the light output of the first lighting device is changed. In other words, at least one of the lighting devices may comprise a light sensor (e.g. a photodiode, a camera, etc.), and when a change in light in the environment corresponds to a change of the light output of the other lighting device, the processor <NUM> may determine that the lighting devices are within the predetermined proximity range.

<FIG> shows an example wherein a second lighting device <NUM> of a second lighting system is located within a first predetermined proximity range <NUM> of a first lighting device <NUM>. Additionally, the second lighting device <NUM> is also located within a second predetermined proximity range <NUM> of a further first lighting device <NUM> of the first lighting system. The processor <NUM> may thus determine that the second lighting device <NUM> is located within both predetermined proximity ranges <NUM>, <NUM> of both first lighting devices <NUM>, <NUM>. If a second lighting device is located within the predetermined proximity range of multiple first lighting devices which are located in different areas <NUM>, <NUM>, the processor <NUM> may determine a first distance between the first lighting device <NUM> and the second lighting device <NUM> based on the one or more signals communicated between these lighting devices (e.g. based on the RSSI, ToF, SnR of one or more signals communicated between the lighting devices), and determine a second distance between the further first lighting device <NUM> and the second lighting device <NUM> based on the one or more signals communicated between these lighting devices (e.g. based on the RSSI, ToF, SnR of one or more signals communicated between the lighting devices). The processor <NUM> may then determine to select a first lighting device based on the distances (i.e. the closest first lighting device, which would be lighting device <NUM> in <FIG>), and associate the second lighting device <NUM> with the area <NUM> of the selected first lighting device <NUM>.

The processor <NUM> may be further configured to request a user, via a user interface, to confirm if the second lighting device is located in the area, and executing associating the second lighting device with the area only if the confirmation is positive. The user interface may be comprised in the control system <NUM>, or it may be comprised in a remote device communicatively coupled to the control system <NUM>. The user interface may be a touch display, and the processor <NUM> may be configured (to instruct a device comprising the touch display) to request the user to confirm that the second lighting device is located in the area. In another example, the user interface may be a voice assistant, and the processor <NUM> may be configured to instruct the voice assistant to request the user to confirm that the second lighting device is located in the area. If the second lighting device is not located in the area, the processor <NUM> may for example request the user to indicate via the user interface in which area the second device is located.

The processor <NUM> may be further configured to render, on a display, virtual representations of the area, the first lighting device and the second lighting device. The display may be comprised in the control system <NUM>, or it may be comprised in a remote device communicatively coupled to the control system <NUM>. The virtual representations may be rendered to indicate that the second lighting device has been associated with the area. <FIG> shows an example of a device <NUM> comprising a display <NUM> which shows the first area <NUM> and the second area <NUM>, and the lighting devices of the first and second lighting systems. The processor <NUM> may render the first lighting devices <NUM>, <NUM> of the first lighting system with a first appearance (dark gray in <FIG>) and the second lighting devices <NUM>, <NUM> of the second lighting system with a second appearance (white in <FIG>) to indicate that the second lighting devices <NUM>, <NUM> originally belong to the second lighting system. After associating the second lighting devices <NUM>, <NUM> with the respective areas <NUM>, <NUM>, the processor <NUM> may change the appearance of the first and/or second lighting devices to indicate that the second lighting devices <NUM>, <NUM> have been associated with the respective areas <NUM>, <NUM>.

The processor <NUM> may be further configured to control the second lighting device by changing its light output after the second lighting device has been associated with the area. The processor <NUM> may send a control command to the second lighting device, for instance via the first and/or second lighting control system <NUM>, <NUM>, depending on whether the second lighting device has already been added to the first lighting control system <NUM>.

<FIG> shows schematically a method of merging a first lighting system with a second lighting system, wherein the first lighting system comprises a plurality of first lighting devices located in a space and a first lighting control system for controlling the plurality of first lighting devices, and wherein the second lighting system comprises a plurality of second lighting devices located in the space and a second lighting control system for controlling the plurality of second lighting devices. The method <NUM> comprises: obtaining <NUM> one or more signals, which one or more signals are indicative of a location of a second lighting device of the plurality of second lighting devices relative to a first lighting device of the plurality of first lighting devices, determining <NUM> if the second lighting device is located within a predetermined proximity range of the first lighting device based on the one or more signals, obtaining <NUM>, from the first lighting control system, information indicative of an association between the first lighting device and an area in the space, associating <NUM>, if the second lighting device is located within the predetermined proximity range, the second lighting device with the area associated with the first lighting device, storing <NUM> the association in a memory of the first lighting control system, and connecting <NUM> the second lighting device to the first lighting control system.

The method <NUM> may be executed by computer program code of a computer program product when the computer program product is run on a processing unit of a computing device, such as the control system <NUM>.

Claim 1:
A method (<NUM>) of merging a first lighting system with a second lighting system,
wherein the first lighting system comprises a plurality of first lighting devices located in a space and a first lighting control system for controlling the plurality of first lighting devices, wherein the second lighting system comprises a plurality of second lighting devices located in the space and a second lighting control system for controlling the plurality of second lighting devices, wherein the method (<NUM>) comprises:
- obtaining (<NUM>) one or more signals, which one or more signals are indicative of a location of a second lighting device of the plurality of second lighting devices relative to a first lighting device of the plurality of first lighting devices,
- determining (<NUM>) if the second lighting device is located within a predetermined proximity range of the first lighting device based on the one or more signals,
- obtaining (<NUM>), from the first lighting control system, information indicative of an association between the first lighting device and an area in the space,
- associating (<NUM>), if the second lighting device is located within the predetermined proximity range, the second lighting device with the area associated with the first lighting device,
- storing (<NUM>) the association in a memory of the first lighting control system, and
- connecting (<NUM>) the second lighting device to the first lighting control system, characterised in that the method further comprises:
- obtaining one or more further signals, which one or more further signals are indicative of a location of a further second lighting device of the plurality of second lighting devices relative to a further first lighting device of the plurality of first lighting devices,
- determining if the further second lighting device is located within a predetermined proximity range of the further first lighting device based on the one or more further signals,
- obtaining, from the first lighting control system, information indicative of an association between the further first lighting device and a further area in the space,
- associating, if the further second lighting device is located within the predetermined proximity range, the further second lighting device with the further area associated with the further first lighting device,
- storing the association in a memory of the first lighting control system, and
- connecting the further second lighting device to the first lighting control system.