Energy consumption impact in a lighting system

Abstract

A system (21) is configured to determine an energy consumption impact related to a first lighting device (51) located at a first location and a second lighting device (52) located at a second location. The system obtains one or more signals indicative of a first energy efficiency of the first lighting device and a second energy efficiency of the second lighting device, where the second energy efficiency differs from the first energy efficiency. The system determines the energy consumption impact of swapping the first and second lighting devices based on their respective energy efficiencies. The system then outputs a signal suggesting swapping the first and second lighting devices if the determined energy consumption impact corresponds to an energy consumption reduction.

Description

[0001] 2024PF80256

[0002] 1

[0003] ENERGY CONSUMPTION IMPACT IN A LIGHTING SYSTEM

[0004] FIELD OF THE INVENTION

[0005] The invention relates to a system for determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system, the first lighting device being located at a first location and the second lighting device being located at a second location.

[0006] The invention further relates to a method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system, the first lighting device being located at a first location and the second lighting device being located at a second location.

[0007] The invention also relates to a computer program product enabling a computer system to perform such a method.

[0008] BACKGROUND OF THE INVENTION

[0009] Advancements in lighting technology have led to the development of more energy-efficient and higher-performance lighting devices and light bulbs, including LED bulbs, smart lighting systems, and other innovative solutions. For example, energy efficiency of lighting devices can be improved by improving the hardware (e.g., reducing standby energy consumption), system behavior (e.g., optimizing automations), and optimizing color rendering.

[0010] However, many existing installations continue to rely on older, less efficient lighting technologies that may no longer be optimal. These older lighting technologies often lack the advanced features, energy savings, and improved light quality offered by newer alternatives. As a result, users may experience suboptimal lighting conditions, higher energy consumption, and increased cost.

[0011] For example, the first Philips Hue E27 bulb was released in 2012 and many of these first bulbs are still in use. Since the introduction of the first bulb, many new types of luminaires have been introduced and the original E27 bulb also underwent multiple modifications including different diffuser materials (from glass to plastic), improved color rendering capabilities, wider gamut, increased light output. Since the lifetime of LED based 2024PF80256

[0012] 2 lighting devices could sometimes be more than 10 years, one household might have multiple generations of the same bulb type (e.g., E27, GU10, BR30).

[0013] US 2021 / 0090151 Al describes a method and apparatus for monitoring the usage of a lighting system. A processor receives output from components of the lighting system, such as luminaires or control devices, that indicates how the user is using the lighting system. The processor then accesses a database of available lighting products and selects a product that would be better suited for the user's usage patterns. The processor arranges for an indication of the selected product to be provided to the user, such as by displaying it on the user's control device. In an embodiment, selecting a lighting system product comprises selecting a lighting system product that will provide a more power-efficient usage of the lighting system.

[0014] A drawback of this method and apparatus is that it selects a new product that the user would need to purchase.

[0015] SUMMARY OF THE INVENTION

[0016] It is advantageous to provide a system and method, which can be used to reduce the energy consumption of a lighting system without requiring new products to be added to the lighting system.

[0017] In a first aspect, a system for determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system, the first lighting device being located at a first location and the second lighting device being located at a second location, comprises at least one output interface and at least one processor configured to obtain one or more signals indicative of a first energy efficiency of the first lighting device and a second energy efficiency of the second lighting device different from the first energy efficiency of the first lighting device, determine an energy consumption impact of swapping the first lighting device with the second lighting device based on the first and second energy efficiencies, and output, via the at least one output interface, an output signal which suggests swapping the first lighting device with the second lighting device if the energy consumption impact corresponds to an energy consumption reduction.

[0018] By determining the energy consumption impact of swapping the first lighting device with the second lighting device, based on energy efficiencies and optionally usage, and suggesting swapping the first lighting device with the second lighting device if the energy consumption impact corresponds to an energy consumption reduction, energy consumption may be reduced. The lighting devices may be luminaires or light bulbs, for 2024PF80256

[0019] 3 example. For example, if a light bulb that might be more energy efficient is used in an area where it is rarely switched on, while a less energy efficient light bulb is used in an area where it is used every day, the system may suggest swapping these light bulbs.

[0020] The first and second energy efficiencies may each comprise an energy efficiency in a standby state and an energy efficiency in an operational state.

[0021] The at least one processor may be configured to determine an average time during which the first lighting device is in the standby state and an average time during which the first lighting device is in an off state, determine an average time during which the second lighting device is in the standby state and an average time during which the second lighting device is in the off state, and determine the energy consumption impact based on the average times and based on the energy efficiencies in the standby state.

[0022] The one or more signals may comprise energy efficiency specifications of the first and second lighting devices and / or historical data on energy consumption by the first and second lighting devices. The energy consumption impact of swapping the first and second lighting devices may be based on the energy efficiency specifications and / or the historical data on energy consumption.

[0023] The at least one processor may further be configured to obtain usage information indicative of usage of the first lighting device at the first location, determine a use of the first lighting device based on the usage information, obtain capability data indicative of capabilities of the first lighting device and capabilities of the second lighting device, determine a first suitability value for the first lighting device based on the capabilities of the first lighting device, the first suitability value being indicative of the suitability of the first lighting device for the use, determine a second suitability value for the second lighting device based on the capabilities of the second lighting device, the second suitability value being indicative of the suitability of the second lighting device for the use, and output the output signal which suggests swapping the first and second lighting devices in dependence on the first suitability value and the second suitability value.

[0024] The at least one processor may be configured to determine whether the first suitability value exceeds the second suitability value and output the output signal which suggests swapping the first and second lighting devices only if the first suitability value does not exceed the second suitability value.

[0025] The at least one processor may be configured to obtain further usage information indicative of usage of the second lighting device at the second location, determine a further use of the second lighting device based on the further usage information, 2024PF80256

[0026] 4 determine a third suitability value for the first lighting device based on the capabilities of the first lighting device, the third suitability value being indicative of the suitability of the first lighting device for the further use, and output the output signal which suggests swapping the first and second lighting devices in dependence on the third suitability value.

[0027] The usage information may indicate a role of a plurality of roles, the role being assigned to the first lighting device by a user, the plurality of roles comprising a decorative lighting role and a functional lighting role.

[0028] The at least one processor may be configured to determine the first suitability for the first lighting device based on an energy consumption associated with the use of the first lighting device and based on whether the first lighting device is only powered by a battery, and determine the second suitability for the second lighting device based on the energy consumption associated with the use of the first lighting device and based on whether the second lighting device is only powered by a battery.

[0029] The at least one processor may be configured to determine whether the first and second lighting devices have a same or similar type and output the output signal which suggests swapping the first and second lighting devices only if it is determined that the first and second lighting devices have a same or similar type.

[0030] The at least one processor may be configured to control the first lighting device according to a first light scene before the first and second lighting devices are swapped, control the second lighting device according to a second light scene before the first and second lighting devices are swapped, control the first lighting device according to the second light scene after the first and second lighting devices have been swapped, and control the second lighting device according to the first light scene after the first and second lighting devices have been swapped.

[0031] The at least one processor may be configured to receive information indicating that the first and second lighting devices have been swapped, reconfigure the lighting system such that a configuration associated with the first lighting device before the first and second lighting devices have been swapped is associated with the second lighting device after the first and second lighting devices have been swapped, and reconfigure the lighting system such that a configuration associated with the second lighting device before the first and second lighting devices have been swapped is associated with the first lighting device after the first and second lighting devices have been swapped.

[0032] The configurations may specify one or more of a group, a location, and an assigned functionality. 2024PF80256

[0033] 5

[0034] In a second aspect, a method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system, the first lighting device being located at a first location and the second lighting device being located at a second location, comprises obtaining one or more signals indicative of a first energy efficiency of the first lighting device and a second energy efficiency of the second lighting device different from the first energy efficiency of the first lighting device, determining an energy consumption impact of swapping the first lighting device with the second lighting device based on the first and second energy efficiencies, and outputting an output signal which suggests swapping the first lighting device with the second lighting device if the energy consumption impact corresponds to an energy consumption reduction. The method may be performed by software running on a programmable device. This software may be provided as a computer program product.

[0035] Moreover, a computer program for carrying out the methods described herein, as well as a non-transitory computer readable storage-medium storing the computer program are provided. A computer program may, for example, be downloaded by or uploaded to an existing device or be stored upon manufacturing of these systems.

[0036] In another aspect, a non-transitory computer-readable storage medium stores a software code portion, the software code portion, when executed or processed by a computer, being configured to perform the method described above.

[0037] As will be appreciated by one skilled in the art, aspects of the present invention may take the form of a device, a method or a computer program product. Accordingly, aspects of the present invention may take the form of an entirely hardware implementation, an entirely software implementation (including firmware, resident software, micro-code, etc.) or an implementation combining software and hardware aspects that may all generally be referred to herein as a "circuit", "module" or "system." Functions described in this disclosure may be implemented as an algorithm executed by a processor / microprocessor of a computer. Furthermore, aspects of the present invention may take the form of a computer program product in one or more computer readable medium(s) having computer readable program code stored thereon.

[0038] Any combination of one or more computer readable medium(s) may be utilized. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of a 2024PF80256

[0039] 6 computer readable storage medium may include, but are not limited to, the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable readonly memory (EPROM or Flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of the present invention, a computer readable storage medium may be any tangible medium that can contain, or store, a program for use by or in connection with an instruction execution system, apparatus, or device.

[0040] A computer readable signal medium may include a propagated data signal with computer readable program code included therein, for example, in baseband or as part of a carrier wave. Such a propagated signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

[0041] Program code on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber, cable, RF, etc., or any suitable combination of the foregoing. Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java(TM), Swift, Dart, Python, Go, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer, or entirely on the remote computer or server. In the latter scenario, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).

[0042] Aspects of the present invention are described below with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to implementations of the present invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor, in particular 2024PF80256

[0043] 7 a microprocessor or a central processing unit (CPU), of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer, other programmable data processing apparatus, or other devices create means for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0044] These computer program instructions may also be stored in a computer readable medium that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the computer readable medium produce an article of manufacture including instructions which implement the function / act specified in the flowchart and / or block diagram block or blocks.

[0045] The computer program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions / acts specified in the flowchart and / or block diagram block or blocks.

[0046] The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of devices, methods and computer program products according to various implementations of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and / or flowchart illustrations, and combinations of blocks in the block diagrams and / or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

[0047] BRIEF DESCRIPTION OF THE DRAWINGS

[0048] These and other aspects of the invention are apparent from and will be further elucidated, by way of example, with reference to the drawings, in which:

[0049] Fig. l is a block diagram of an implementation of the system; 2024PF80256

[0050] 8

[0051] Fig. 2 shows an example of a floor plan of an apartment in which the system of Fig. 1 has been installed;

[0052] Fig. 3 is a flow diagram of a first implementation of the method;

[0053] Fig. 4 is a flow diagram of a second implementation of the method;

[0054] Fig. 5 is a flow diagram of a third implementation of the method;

[0055] Fig. 6 is a flow diagram of a fourth implementation of the method;

[0056] Fig. 7 is a flow diagram of a fifth implementation of the method;

[0057] Fig. 8 is a flow diagram of a sixth implementation of the method;

[0058] Fig. 9 is a flow diagram of a seventh implementation of the method; and

[0059] Fig. 10 is a block diagram of an exemplary data processing system for performing the methods of the invention.

[0060] Corresponding elements in the drawings are denoted by the same reference numeral.

[0061] DETAILED DESCRIPTION

[0062] Fig. 1 shows an implementation of the system for determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system. The first lighting device is located at a first location and the second lighting device is located at a second location in an environment. In this implementation, the system comprises a mobile device 21. The mobile device 21 may be a mobile phone, a tablet, an augmented reality (AR) headset, or a smart watch, for example.

[0063] In the implementation of Fig. 1, the mobile device 21 is able to control lighting devices 51-56 via a bridge 45, e.g. using Zigbee technology. A bridge is a central hub in a smart lighting system that connects lighting devices to the network and facilitates communication between the devices and control software. A bridge stores a configuration and ensures synchronized operation of the lighting devices. The bridge 45 may be a Hue bridge, for example. The bridge 45 is connected to a wireless LAN access point 33, e.g. via Ethernet or WiFi. In the example of Fig. 1, the mobile device 21 is connected directly to the wireless LAN access point 33. Alternatively, the mobile device 21 may be connected to the Internet 31 remotely, e.g., via an LTE or 5G mobile communication network.

[0064] The bridge 45 is able to communicate with lighting devices 51-56, sensors 41 and 42, and light control devices 46 and 47, e.g. using Zigbee technology. These devices form a lighting system 40. In an alternative implementation, the mobile device 21 can alternatively or additionally control one or more of the lighting devices 51-56 without a bridge, e.g., directly via 2024PF80256

[0065] 9

[0066] Bluetooth or via an Internet server 37. The Internet server 37 may be operated by a manufacturer of a lighting company, for example. The Internet server 37 is also connected to the Internet 31.

[0067] The lighting system 40 may be configured to let one or both of sensors 41 and 42 trigger one or more of lighting devices 51-56. The sensors 41 and 42 may be (Hue) motion sensors, for example. The lighting system 40 may also be configured to let one or both of light control devices 46 and 47 control one or more of lighting devices 51-56. The light control devices 46 and 47 may comprise a Hue dimmer switch and a Hue smart button, for example. In order to link trigger events from light control devices 46 and 47 and sensors 41 and 42 to light control commands, the bridge 45 has memory for storing rules, e.g. a definition that pressing a button on light control device 46 dims lighting device 53.

[0068] The mobile device 21 comprises a receiver 23, a transmitter 24, a processor 25, a speaker 26, memory 27, a camera 28, and a display 29. The processor 25 is configured to obtain one or more signals indicative of a first energy efficiency of the first lighting device, e.g., lighting device 51, and a second energy efficiency of the second lighting device, e.g., lighting device 52, different from the first energy efficiency of the first lighting device, determine an energy consumption impact of swapping the first lighting device with the second lighting device based on the first and second energy efficiencies, and output, via the display 29 or the speaker 26, an output signal which suggests swapping the first lighting device with the second lighting device if the energy consumption impact corresponds to an energy consumption reduction.

[0069] The one or more signals may comprise energy efficiency specifications of the first and second lighting devices and / or historical data on energy consumption by the first and second lighting devices, for example. The processor 25 may be configured to obtain energy efficiency specifications from the Internet, e.g., from Internet server 37, for example. The processor 25 may be configured to obtain historical data on energy consumption from the lighting devices 51-56 or from a local power monitor (not shown in Fig. 1), for example.

[0070] The energy consumption impact of swapping the first and second lighting devices may be determined when the user activates an “energy consumption optimization scan” from an app running on mobile device 21, for example. The mobile device 21 may then check if there are same or similar types of lighting devices that have different energy efficiency specs (e.g., lumen per watt). If no such lighting device is found, the mobile device 21 may suggest other ways of optimizing energy usage, e.g., energy efficient light scenes.

[0071] If same or similar types of lighting devices with different energy efficiencies are found, the mobile device 21 may, for example, check historical data to estimate average energy 2024PF80256

[0072] 10 consumption. The energy consumption will depend on how often lighting devices are used and in what settings (i.e., at what brightness and color). If a significant difference is found, e.g., the lighting device that is less energy efficient is used more frequently and has higher average energy consumption, the mobile device 21 may output all possible swaps, e.g. via display 29 or speaker 26.

[0073] Optionally, the system may check whether swapping might lead to a worse user experience and indicate for all possible swaps the potential impact on the user experience. For example, in some cases, the new generation of the same bulb type, while being more energy efficient, also includes significant improvements in light rendering capabilities, e.g., a wider color gamut or a higher lumen output. In this case, before proposing a swap, there may be an additional check on how these devices are used. For instance, if a newer device with a wider color gamut is never used in a color scene but only used for functional lighting, replacing it with an older generation with a limited color rendering will not impact the user experience. However, if the user experience might be affected, the system could still propose the swap but indicate the consequence to the user, so they can decide if they want to swap or not.

[0074] The user may be given the option to accept or decline the swap. If the user accepts the swap, the mobile device 21 may guide the user step by step to ensure that the correct lighting devices are swapped (e.g., by blinking the two lighting devices that need to be swapped).

[0075] The processor 25 may further be configured to receive information indicating that the first and second lighting devices have been swapped, e.g., from bridge 45 or via the display 29 (e.g., a touchscreen display), reconfigure the lighting system such that a configuration associated with the first lighting device before the first and second lighting devices have been swapped is associated with the second lighting device after the first and second lighting devices have been swapped, and reconfigure the lighting system such that a configuration associated with the second lighting device before the first and second lighting devices have been swapped is associated with the first lighting device after the first and second lighting devices have been swapped.

[0076] The configuration of the lighting system 40 may be stored on the bridge 45, for example. The mobile device 21 may then reconfigure the lighting system 40 by contacting the bridge 45.

[0077] Instead of only determining the energy consumption impact after the user activates an “energy consumption optimization scan” from an app running on mobile device 21, the app may determine the energy consumption impact automatically, e.g. periodically 2024PF80256

[0078] 11 and / or when certain events occur, and notify the user about potential energy consumption reduction in the app, e.g., using a popup message. An example of such an event is the configuration of a new lighting device. If the mobile device 21 obtains information indicating that a new lighting device has been added, e.g., the user adds the new lighting device in the app, it could recommend swapping the new lighting device with an old lighting device if this reduces energy consumption reduction. If the mobile device is an AR headset or if the mobile device is a tablet or mobile phone that provides AR via its display, the mobile device 21 may indicate the lighting devices that can be swapped directly in the AR view.

[0079] The connections depicted in Fig. 1 are only schematic representations. For example, it is not required that each lighting device communicates directly with bridge 45. The devices of the lighting system may form a mesh network, and physical communication may be routed over multiple nodes in order to keep the distances of each radio connection short.

[0080] In the implementation of the mobile device 21 shown in Fig. 1, the mobile device 21 comprises one processor 25. In an alternative implementation, the mobile device 21 comprises multiple processors. The processor 25 of the mobile device 21 may be a general- purpose processor, e.g. from ARM or Qualcomm or an application-specific processor. The processor 25 of the mobile device 21 may run an Android or iOS operating system for example. The display 29 may comprise an LCD or OLED display panel, for example. The display 29 may be a touchscreen display, for example. The memory 27 may comprise one or more memory units. The memory 27 may comprise solid state memory, for example.

[0081] The receiver 23 and the transmitter 24 may use one or more wireless communication technologies such as Wi-Fi (IEEE 802.11) to communicate with the wireless LAN access point 33, for example. In an alternative implementation, multiple receivers and / or multiple transmitters are used instead of a single receiver and a single transmitter. In the implementation shown in Fig. 1, a separate receiver and a separate transmitter are used. In an alternative implementation, the receiver 23 and the transmitter 24 are combined into a transceiver. Camera 28 may comprise a CMOS or CCD sensor, for example. The mobile device 21 may comprise other components typical for a mobile device such as a battery and a power connector. The invention may be implemented using a computer program running on one or more processors.

[0082] In the implementation of Fig. 1, the system of the invention comprises a mobile device. In an alternative implementation, the system of the invention alternatively or additionally comprises a different device, e.g., an Internet server or a desktop PC. In the implementation of Fig. 1, the system comprises a single device. In an alternative 2024PF80256

[0083] 12 implementation, the system comprises a plurality of devices, e.g. the mobile device 21 and the bridge 45.

[0084] Fig. 2 shows an example of a floor plan of an apartment in which the lighting system 40 of Fig. 1 has been installed. Apartment 61 comprises an (open) kitchen 63, a living room 64, a bathroom 65, a hallway 66, and a bedroom 67. Lighting device 54 of Fig. 1 has been installed in the (open) kitchen 63, bridge 45 and lighting device 51 of Fig. 1 have been installed in the living room 64, and lighting device 53, light sensor 41, and lighting control device 46 of Fig. 1 have been installed in the bathroom 65.

[0085] Furthermore, lighting device 52, light sensor 42, and lighting control device 47 of Fig. 1 have been installed in the hallway 66 and lighting devices 55 and 56 of Fig. 1 have been installed in the bedroom 67. In the example of Fig. 2, light sensors 41 and 42 are (part of) separate devices. In another example, light sensor 41 may be integrated into lighting device 53 and / or light sensor 42 may be integrated into lighting device 52. The lighting system has been configured to let light control device 46 control lighting device 53 and to let light control device 47 control lighting device 52.

[0086] If the lighting device 52 is a new energy efficient light bulb which has recently been purchased to replace an older less energy efficient light bulb which has stopped working, and the lighting device 51 is also an older less energy efficient light bulb, the mobile device 21 of user 69 may suggest swapping lighting devices 51 and 52, because a lighting device in the living room 64 is used more often and with higher light output levels than a lighting device in the hallway 66.

[0087] After the user has indicated that the lighting devices 51 and 52 have been swapped or after it has been detected automatically that the lighting devices 51 and 52 have been swapped, light scenes associated with lighting device 51 are associated with lighting device 52, light scenes associated with lighting device 52 are associated with lighting device 51, and the lighting system is configured to let light control device 47 control lighting device 51 instead of lighting device 52.

[0088] A light scene is a pre-programmed configuration of lighting settings, stored in a memory, that defines specific lighting conditions within a space. It typically includes parameters such as color, intensity, brightness, and sometimes dynamic effects, all tailored to create a particular ambiance or support specific activities. Light scenes can be recalled or activated automatically or manually, enabling consistent and repeatable lighting experiences that meet predefined objectives or aesthetic preferences. 2024PF80256

[0089] 13

[0090] A first implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is shown in Fig. 3. The first lighting device is located at a first location and the second lighting device is located at a second location in an environment. The method may be performed by the mobile device 21 of Fig. 1, for example.

[0091] Step 101 comprises obtaining one or more signals indicative of a first energy efficiency of the first lighting device and a second energy efficiency of the second lighting device different from the first energy efficiency of the first lighting device. The first and second energy efficiencies may each comprise an energy efficiency in a standby state and an energy efficiency in an operational state, for example. The one or more signals may comprise energy efficiency specifications of the first and second lighting devices and / or historical data on energy consumption by the first and second lighting devices, for example.

[0092] Step 103 comprises determining an energy consumption impact of swapping the first lighting device with the second lighting device based on the first and second energy efficiencies obtained in step 101. The energy consumption impact of swapping the first lighting device with the second lighting device may be determined based on energy efficiency specifications and / or the historical data on energy consumption obtained in step 101, for example.

[0093] The energy consumption impact of swapping the first and second lighting devices may be determined based on energy efficiencies in the standby state and energy efficiencies in the operational state. This allows the energy consumption impact to be determined relatively accurately.

[0094] The energy consumption impact may not only depend on energy usage, but additionally on energy cost. For example, a lighting device in a storage room that might be frequently used during the day will probably consume a lot of energy, so at first glance, it might be valid to swap it with a more energy efficient lighting device from another room where the lighting device is only used in the evening, but from the energy cost perspective, this might not be beneficial, as a lighting device used during the day might be powered by solar panels and be “free” for a user, while a lighting device used in the evening likely requires more expensive electricity.

[0095] Step 111 comprises determining whether the energy consumption impact determined in step 103 corresponds to an energy consumption reduction. Step 113 is performed if it is determined in step 111 that the energy consumption impact determined in step 103 corresponds to an energy consumption reduction. 2024PF80256

[0096] 14

[0097] Step 113 comprises outputting an output signal which suggests swapping the first and second lighting devices. The output signal output in step 113 may additionally suggest repositioning one or both lighting devices when swapping them and / or recommend that the user buy a new lighting device if this reduces energy consumption (significantly) more. Optionally, step 113 may further consider data from light sensors when determining whether to suggest repositioning the lighting device(s). The implementation of Fig. 3 may be combined with one or more of the implementations of Figs. 4-9.

[0098] A second implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is shown in Fig. 4. The implementation of Fig. 4 is an extension of the implementation of Fig. 3. In the implementation of Fig. 4, step 103 is implemented by a step 205 and steps 201 and 203 are performed before step 205. Furthermore, in the implementation of Fig. 4, the first and second energy efficiencies obtained in step 101 each comprise an energy efficiency in a standby state and an energy efficiency in an operational state.

[0099] Step 201 comprises determining an average time during which the first lighting device is in the standby state and an average time during which the first lighting device is in an off state (so neither in the standby state nor in the operational state). Step 203 comprises determining an average time during which the second lighting device is in the standby state and an average time during which the second lighting device is in the off state.

[0100] Step 205 comprises determining the energy consumption impact based on the average times determined in steps 201 and 203 and based on the energy efficiencies in the standby state obtained in step 101. For example, if a lighting device used at the first location is often switched off (e.g., by cutting power to the lighting device) instead of used in standby mode, a swap between the first and second lighting devices may be suggested even if the second lighting device has a relatively high power consumption in standby state.

[0101] Step 201 may further comprise determining an average time during which the first lighting device is in the operational state, step 203 may further comprises determining an average time during which the second lighting device is in the operational state, and the energy consumption impact may further be determined based on the energy efficiencies in the operational state obtained in step 101. The implementation of Fig. 4 may be combined with one or more of the implementations of Figs. 5-9.

[0102] A third implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is 2024PF80256

[0103] 15 shown in Fig. 5. The implementation of Fig. 5 is an extension of the implementation of Fig. 3. In the implementation of Fig. 5, step 111 of Fig. 3 is implemented by a step 173 and a step 171 is performed before step 173.

[0104] Step 171 comprises estimating an effort of deinstalling and installing the first and second lighting devices when swapping the first and second lighting devices. Step 173 comprises determining whether the energy consumption impact determined in step 103 corresponds to an energy consumption reduction and evaluating the effort estimated in step 171.

[0105] Step 113 is performed if it is determined in step 111 that the energy consumption impact determined in step 103 corresponds to an energy consumption reduction in dependence on the estimated effort. For example, swapping two light bulbs will be easier than swapping two ceiling mounted luminaires and swapping the first and second lighting devices might not be suggested if the first and second lighting devices are ceiling mounted luminaires. The implementation of Fig. 5 may be combined with one or more of the implementations of Figs. 4,6-9.

[0106] A fourth implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is shown in Fig. 6. The implementation of Fig. 6 is an extension of the implementation of Fig.

[0107] 3. In the implementation of Fig. 6, step 111 of Fig. 3 is implemented by a step 141 and steps 131, 133, 135, 137, and 139 are performed before step 141.

[0108] Step 131 comprises obtaining usage information indicative of usage of the first lighting device at the first location. The usage information may comprise historical usage of the first lighting device, for example. Historical usage may indicate the usage of lighting devices quite well if enough historical usage data is available. Step 133 comprises determining a use of the first lighting device based on the usage information obtained in step 131.

[0109] Step 135 comprises obtaining capability data indicative of capabilities of the first lighting device and capabilities of the second lighting device. These capabilities may include minimum lumen output, maximum lumen output, and color capabilities, for example. Next to rendering capabilities, capabilities of the lighting device may also relate to processing, connectivity, physical connector and / or sensing capabilities, for example. For instance, the lighting device may also have one or more physical connector options (e.g. lamp socket or power track connector), or the power providing system in which the lighting device is installed (fixture, track system) may provide multiple connector options which may be 2024PF80256

[0110] 16 determined. The capability data may be obtained from the lighting devices and / or from the Internet, for example.

[0111] Step 137 comprises determining a first suitability value for the first lighting device based on the capabilities of the first lighting device determined in step 135. The first suitability value is indicative of the suitability of the first lighting device for the use determined in step 133. A suitability value may be a numerical value, for example.

[0112] Optionally, the first suitability for the first lighting device is further determined based on an energy consumption associated with the use of the first lighting device and based on whether the first lighting device is only powered by a battery. For example, rendering of certain light scenes consumes less energy than rendering of certain other light scenes. This may result in suggestions to use battery-powered lighting devices at locations where the use of the lighting does not require a high enery consumption. The energy consumption may be measured energy consumption of the first lighting device or may be estimated based on the use of the first lighting device (optionally using information about the first lighting device).

[0113] Step 139 comprises determining a second suitability value for the second lighting device based on the capabilities of the second lighting device determined in step 135. The second suitability value is indicative of the suitability of the second lighting device for the use determined in step 133.

[0114] Optionally, the second suitability for the second lighting device is further determined based on the energy consumption associated with the use of the first lighting device and based on whether the second lighting device is only powered by a battery. The energy consumption may be measured energy consumption of the first lighting device (which is then a rough estimate of what the second lighting device would consume) or may be estimated based on the use of the first lighting device (optionally using information about the second lighting device).

[0115] If the first and lighting devices have the same capabilities, their suitabilities may still be different. For example, one of the lighting devices may be determined, based on the usage information, to have light rendering degradation, e.g., caused by different historical usage, thereby making it less suitable for certain uses. This degradation may also be determined based on historical data on energy consumption by the first and second lighting devices, e.g., obtained in step 101. Historical data on energy consumption allows the energy consumption over time to be tracked. Over longer usage periods, lighting devices will likely degrade at a different pace, for example because they are used in a different way. This may 2024PF80256

[0116] 17 be taken into account when determining whether to suggest swapping the first and second lighting devices in step 141. Thus, it may be suggested to swap bulbs of the same type and generation.

[0117] The suitabilities may further be determined based on the repositioning capabilities of the lighting devices and may assume that the user will reposition the lighting device(s) after swapping them. Some lighting devices are easier to reposition (e.g., Hue bloom, Hue Go, Hue Signe) compared to others (e.g., light strips).

[0118] Step 141 comprises determining whether the energy consumption impact determined in step 103 corresponds to an energy consumption reduction and evaluating the first suitability value determined in step 137 and the second suitability value determined in step 139. Step 113 is performed if it is determined in step 111 that the energy consumption impact determined in step 103 corresponds to an energy consumption reduction in dependence on the first suitability value and the second suitability value. Step 113 comprises outputting an output signal which suggests swapping the first and second lighting devices.

[0119] Optionally, step 141 comprises determining whether the first suitability value determined in step 137 exceeds the second suitability value determined in step 139. If the first suitability value does not exceed the second suitability value, the first lighting device is as suitable or less suitable than the second lighting device at the location of the first lighting device. Step 113 is then performed if it is determined in step 141 that the energy consumption impact determined in step 103 corresponds to an energy consumption reduction and the first suitability value does not exceed the second suitability value.

[0120] The usage information obtained in step 131 may indicate how frequent the first lighting device is used at maximum light output level, for example. For instance, if the first lighting device is always set to maximum brightness (light output level) and the second lighting device has lower lumen output, swapping the two might lead to a reduced user experience.

[0121] Additionally or alternatively, the usage information obtained in step 131 may indicate quantities of pixels in light effects rendered by the first lighting device, for example. For instance, if the first lighting device has more pixels and is detected to be used for rendering a special effect like fireplace and the second lighting device has less pixels and is detected to be used as a single pixel light source, swapping the two might lead to a reduced user experience.

[0122] Additionally or alternatively, the usage information obtained in step 131 may indicate levels of dynamicity in light effects rendered by the first lighting device, for 2024PF80256

[0123] 18 example. For instance, older device platforms might not support dynamic effects or support only basic effects and might therefore not be able to render light effects with higher levels of dynamicity as intended. If the first lighting device runs on a newer device platform and renders very dynamic light effects and the second lighting device runs on an older device platform and does not render very dynamic light effects, swapping the two might lead to a reduced user experience.

[0124] Additionally or alternatively, the usage information obtained in step 131 may indicate whether the first lighting device is used for rendering entertainment light effects, for example. Entertainment light effects are light effects which are based on content being rendered simultaneously on a content rendering device. For instance, if the second lighting device has a reduced color gamut and is used only in scenes with pastel or desaturated colors, and the first lighting device has better capabilities in terms of color rendering and is used for rendering entertainment light effects, swapping the two might lead to a reduced user experience.

[0125] Additionally or alternatively, the usage information obtained in step 131 may indicate a role of a plurality of roles. The role is assigned to the first lighting device by a user. The plurality of roles comprises a decorative lighting role and a functional lighting role. In certain lighting systems, the user can already specify this role, and this usage information may therefore already be available. Typically, high brightness white light is needed for functional lighting and lower brightness color light is needed for decorative lighting, so if the first lighting device is a color lighting device which is not capable of emitting high brightness light and is used for decorative lighting and the second lighting device is a white lighting device which is used for functional lighting, swapping the two might lead to a reduced user experience.

[0126] Thus, the use of the first lighting device may be determined in step 133 based on how frequent the first lighting device is used at maximum light output level, quantities of pixels in light effects rendered by the first lighting device, levels of dynamicity in light effects rendered by the first lighting device, whether the first lighting device is used for rendering entertainment light effects, the role of the first lighting device, and / or the historical usage of the first lighting device, for example. The suitability values may be determined in steps 137 and 139 based on a use determined in this manner.

[0127] A swap of the two lighting devices may be suggested even if swapping the two lighting devices reduces user experience, e.g., because the reduction in energy consumption is considered more important than the reduction in user experience. The user experience 2024PF80256

[0128] 19 impact may be quantified and step 113 may be performed based on the outcome of a weighted comparison of the energy consumption impact and the user experience impact. The implementation of Fig. 6 may be combined with one or more of the implementations of Figs. 4-5, 7-9.

[0129] A fifth implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is shown in Fig. 7. The implementation of Fig. 7 is an extension of the implementation of Fig. 6. In the implementation of Fig. 7, step 111 is implemented by a step 159 and steps 151, 153, and 155 are performed before step 159.

[0130] Step 151 comprises obtaining further usage information indicative of usage of the second lighting device at the second location. The further usage information may indicate or comprise similar information as the usage information. Examples of usage information have been described in relation to Fig. 6. Step 153 comprises determining a use of the second lighting device based on the further usage information obtained in step 151.

[0131] Step 155 comprises determining a third suitability value for the first lighting device based on the capabilities of the first lighting device obtained in step 135. The third suitability value is indicative of the suitability of the first lighting device for the use of the second lighting device determined in step 153.

[0132] Step 159 comprises determining whether the energy consumption impact determined in step 103 corresponds to an energy consumption reduction and evaluating the first suitability value determined in step 137, the second suitability value determined in step 139, and the third suitability value determined in step 155. Step 113 is performed if it is determined in step 111 that the energy consumption impact determined in step 103 corresponds to an energy consumption reduction in dependence on the first, second, third suitability values.

[0133] As a first example, step 113 might be performed only if the energy consumption impact corresponds to an energy consumption reduction, the first suitability value does not exceed the second suitability value and the third suitability value is not lower than the first suitability value. Thus, swapping is only suggested if the second lighting device is not less suitable than the first lighting device at the first location and the first lighting device is as suitable at the second location as at the first location.

[0134] As a second example, in an additional step (not shown in Fig. 4), a fourth suitability value is determined for the second lighting device based on the capabilities of the second lighting device obtained in step 135. The fourth suitability value is indicative of the 2024PF80256

[0135] 20 suitability of the second lighting device for the use of the second lighting device determined in step 153. In this second example, step 113 might be performed only if the energy consumption impact corresponds to an energy consumption reduction and the sum of the difference between the second and first suitability values and the difference between the third and fourth suitability values is positive. Thus, swapping is only suggested if the overall user experience does not deteriorate.

[0136] In an extension of the second implementation of Fig. 4, an additional step is performed between 133, 135, and 153 on one hand and steps 137, 139, and 155 on the other hand. In this additional step, it may be determined whether the use determined in step 133 is equal to the use determined in step 153. If it is determined in this additional step that the use determined in step 133 is equal to the use determined in step 153, steps 137, 139, and 155 are skipped. If the uses are the same, whether step 113 is performed after step 159 might only depend on whether the energy consumption impact corresponds to an energy consumption reduction. Alternatively, if the uses are the same, steps 159 and 113 may be skipped as well. The implementation of Fig. 7 may be combined with one or more of the implementations of Figs. 4-5, 8-9.

[0137] A sixth implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is shown in Fig. 8. The implementation of Fig. 8 is an extension of the implementation of Fig. 3. In the implementation of Fig. 8, step 111 of Fig. 3 is implemented by a step 223 and a step 221 is performed before step 223.

[0138] Step 221 comprises determining whether the first and second lighting devices have a same or similar type. This may be determined based on the lighting devices’ capabilities, which may include capabilities like minimum lumen output, maximum lumen output, color capabilities, and / or purpose (functional / decorative), for example.

[0139] Step 223 comprises determining whether the energy consumption impact determined in step 103 corresponds to an energy consumption reduction. Step 113 is performed after step 223 if it is determined in step 221 that the first and second lighting devices have a same or similar type and it is determined in step 223 that the energy consumption impact determined in step 103 corresponds to an energy consumption reduction.

[0140] This implementation may be used to ensure that swapping the lighting devices does not require a lot of effort and / or to ensure that the lighting devices have the same or comparable light effects and usage. The lighting devices do not need to have the same type but 2024PF80256

[0141] 21 may be different generations or hardware variants of the same model or may be different models which have comparable light effects and usage, e.g., Hue Bloom and HueGo.

[0142] In an alternative implementation, the energy consumption impact is not even determined in step 103 if it is determined in step 221 that the first and second lighting devices do not have a same or similar type. In this way, combinations of lighting devices which may be swapped and for which an energy consumption impact of swapping should be determined are prefiltered. The implementation of Fig. 8 may be combined with one or more of the implementations of Figs. 4-7,9.

[0143] A seventh implementation of the method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system is shown in Fig. 9. The implementation of Fig. 9 is an extension of the implementation of Fig. 3. In the implementation of Fig. 9, steps 241 and 243 are performed before step 101 of Fig. 3 and steps 245, 247, 249, and 253 are performed after step 113 of Fig. 3.

[0144] Step 241 comprises controlling the first lighting device, e.g., lighting device 51 of Fig. 1, according to a first light scene, e.g., light scene A. Step 243 comprises controlling the second lighting device, e.g., lighting device 52 of Fig. 1, according to a second light scene, e.g., light scene B.

[0145] Step 245 comprises receiving information indicating that the first and second lighting devices have been swapped. A user may indicate manually that the first and second lighting devices have been swapped or this may be detected automatically, e.g., by bridge 45 of Fig. 1. Doing this automatically may reduce the time during which the lighting system is used while being configured incorrectly.

[0146] A first example, by analyzing the energy consumption data of the lighting devices, the system might detect changes that could suggest a swap. For example, if a device previously known for low energy usage in a specific location suddenly shows high energy usage (or vice versa), it could indicate that the device has been moved to a location with different lighting demands. As a second example, camera images captured at different moments may be analyzed to automatically detect a swap of lighting devices. The camera images may be captured as part of an augmented reality or a security application, for example.

[0147] Step 247 comprises reconfiguring the lighting system, e.g., by contacting bridge 45 of Fig. 1, such that a configuration associated with the first lighting device before 2024PF80256

[0148] 22 the first and second lighting devices have been swapped is associated with the second lighting device after the first and second lighting devices have been swapped.

[0149] Step 249 comprises reconfiguring the lighting system such that a configuration associated with the second lighting device before the first and second lighting devices have been swapped is associated with the first lighting device after the first and second lighting devices have been swapped. The configurations may specify one or more of a group, a location, and an assigned functionality, for example. For instance, after the lighting devices are swapped, the light setup may be reconfigured to assign each lighting device to a corresponding light group / room. A group may correspond to a location, e.g., a room, but this is not required.

[0150] By automatically reconfiguring the lighting system, the user does not need to do this manually. Thus, this reduces user effort. For example, if the user accepts the swap suggested by the mobile device 21 of Fig. 1, the mobile device 21 may automatically reassign the lights to the respective light groups, to minimize the effort user needed for reconfiguring the system. Also, the mobile device 21 may automatically restore functionality assigned to the replaced lighting device, for example reconnect sensors, switches, and automations to the replaced lighting device.

[0151] Step 251 comprises controlling the first lighting device, e.g., lighting device 51 of Fig. 1, according to the second light scene, e.g., light scene B. Step 253 comprises controlling the second lighting device, e.g., lighting device 52 of Fig. 1, according to the first light scene, e.g., light scene A. In other words, after the swap, the first light scene is associated with the second lighting device instead of with the first lighting device and the second light scene is associated with the first lighting device instead of with the second lighting device. The implementation of Fig. 9 may be combined with one or more of the implementations of Figs. 4- 8.

[0152] Fig. 10 depicts a block diagram illustrating an exemplary data processing system that may perform the method as described with reference to the flow charts.

[0153] As shown in Fig. 10, the data processing system 900 may include at least one processor 902 coupled to memory elements 904 through a system bus 906. As such, the data processing system may store program code within memory elements 904. Further, the processor 902 may execute the program code accessed from the memory elements 904 via a system bus 906. In one aspect, the data processing system may be implemented as a computer that is suitable for storing and / or executing program code. It should be appreciated, however, that the system 900 may be implemented in the form of any system including a 2024PF80256

[0154] 23 processor and a memory that is capable of performing the functions described within this specification. The data processing system may be an Intemet / cloud server, for example.

[0155] The memory elements 904 may include one or more physical memory devices such as, for example, local memory 908 and one or more bulk storage devices 910. The local memory may refer to random access memory or other non-persistent memory device(s) generally used during actual execution of the program code. A bulk storage device may be implemented as a hard drive or other persistent data storage device. The processing system 900 may also include one or more cache memories (not shown) that provide temporary storage of at least some program code in order to reduce the quantity of times program code must be retrieved from the bulk storage device 910 during execution. The processing system 900 may also be able to use memory elements of another processing system, e.g. if the processing system 900 is part of a cloud-computing platform.

[0156] Input / output (I / O) devices depicted as an input device 912 and an output device 914 optionally can be coupled to the data processing system. Examples of input devices may include, but are not limited to, a keyboard, a pointing device such as a mouse, a microphone (e.g. for voice and / or speech recognition), or the like. Examples of output devices may include, but are not limited to, a monitor or a display, speakers, or the like. Input and / or output devices may be coupled to the data processing system either directly or through intervening VO controllers.

[0157] The input and the output devices may be implemented as a combined input / output device (illustrated in Fig. 10 with a dashed line surrounding the input device 912 and the output device 914). An example of such a combined device is a touch sensitive display, also sometimes referred to as a “touch screen display” or simply “touch screen”. In such an implementation, input to the device may be provided by a movement of a physical object, such as e.g. a stylus or a finger of a user, on or near the touch screen display.

[0158] A network adapter 916 may also be coupled to the data processing system to enable it to become coupled to other systems, computer systems, remote network devices, and / or remote storage devices through intervening private or public networks. The network adapter may comprise a data receiver for receiving data that is transmitted by the systems, devices and / or networks to the data processing system 900, and a data transmitter for transmitting data from the data processing system 900 to the systems, devices and / or networks. Modems, cable modems, and Ethernet cards are examples of different types of network adapter that may be used with the data processing system 900. 2024PF80256

[0159] 24

[0160] As pictured in Fig. 10, the memory elements 904 may store an application 918. The application 918 may be stored in the local memory 908, the one or more bulk storage devices 910, or separate from the local memory and the bulk storage devices. It should be appreciated that the data processing system 900 may further execute an operating system (not shown in Fig. 10) that can facilitate execution of the application 918. The application 918, being implemented in the form of executable program code, can be executed by the data processing system 900, e.g., by the processor 902. Responsive to executing the application, the data processing system 900 may be configured to perform one or more operations or method steps described herein.

[0161] The invention may be implemented as a program product for use with a computer system, where the program(s) of the program product define functions. The program(s) may be contained on a variety of non-transitory computer-readable storage media, where, as used herein, the expression “non-transitory computer readable storage media” comprises all computer-readable media, with the sole exception being a transitory, propagating signal. The program(s) may also be contained on a variety of transitory computer-readable storage media. Illustrative computer-readable storage media include, but are not limited to: (i) non-writable storage media (e.g., read-only memory devices within a computer such as CD-ROM disks readable by a CD-ROM drive, ROM chips or any type of solid-state non-volatile semiconductor memory) on which information is permanently stored; and (ii) writable storage media (e.g., flash memory, floppy disks within a diskette drive or hard-disk drive or any type of solid-state random-access semiconductor memory) on which alterable information is stored. The computer program may be run on the processor 902 described herein.

[0162] The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof.

[0163] The corresponding structures, materials, acts, and equivalents of all means or step plus function elements in the claims below are intended to include any structure, material, or act for performing the function in combination with other claimed elements as specifically claimed. The detailed description has been presented for purposes of illustration, but is not intended to be 2024PF80256

[0164] 25 exhaustive or limited to the implementations in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope of the present invention.

Claims

2024PF8025626CLAIMS:

1. A system (21) for determining an energy consumption impact in relation to a first lighting device (51) and a second lighting device (52) in a lighting system (40), the first lighting device (51) being located at a first location and the second lighting device (52) being located at a second location, the system (21) comprising: at least one output interface (29); and at least one processor (25) configured to:- obtain one or more signals indicative of a first energy efficiency of the first lighting device (51) and a second energy efficiency of the second lighting device (52) different from the first energy efficiency of the first lighting device (51),- determine an energy consumption impact of swapping the first lighting device (51) with the second lighting device (52) based on the first and second energy efficiencies, and- output, via the at least one output interface (29), an output signal which suggests swapping the first lighting device (51) with the second lighting device (52) if the energy consumption impact corresponds to an energy consumption reduction.

2. A system (21) as claimed in claim 1, wherein the first and second energy efficiencies each comprise an energy efficiency in a standby state and an energy efficiency in an operational state.

3. A system (21) as claimed in claim 2, wherein the at least one processor (25) is configured to:- determine an average time during which the first lighting device (51) is in the standby state and an average time during which the first lighting device (51) is in an off state,- determine an average time during which the second lighting device (52) is in the standby state and an average time during which the second lighting device (52) is in the off state, and- determine the energy consumption impact based on the average times and based on the energy efficiencies in the standby state.2024PF80256274. A system (21) as claimed in any one of the preceding claims, wherein the one or more signals comprise energy efficiency specifications of the first and second lighting devices (51,52) and / or historical data on energy consumption by the first and second lighting devices (51,52), and wherein the energy consumption impact of swapping the first and second lighting devices (51,52) is based on the energy efficiency specifications and / or the historical data on energy consumption.

5. A system (21) as claimed in any one of the preceding claims, wherein the at least one processor (25) is further configured to:- obtain usage information indicative of usage of the first lighting device (51) at the first location,- determine a use of the first lighting device (51) based on the usage information,- obtain capability data indicative of capabilities of the first lighting device (51) and capabilities of the second lighting device (52),- determine a first suitability value for the first lighting device (51) based on the capabilities of the first lighting device (51), the first suitability value being indicative of the suitability of the first lighting device (51) for the use,- determine a second suitability value for the second lighting device (52) based on the capabilities of the second lighting device (52), the second suitability value being indicative of the suitability of the second lighting device (52) for the use, and- output the output signal which suggests swapping the first and second lighting devices (51,52) in dependence on the first suitability value and the second suitability value.

6. A system (21) as claimed in claim 5, wherein the at least one processor (25) is configured to:- determine whether the first suitability value exceeds the second suitability value, and- output the output signal which suggests swapping the first and second lighting devices (51,52) only if the first suitability value does not exceed the second suitability value.2024PF80256287. A system (21) as claimed in claim 5 or 6, wherein the at least one processor (25) is configured to:- obtain further usage information indicative of usage of the second lighting device (52) at the second location,- determine a further use of the second lighting device (52) based on the further usage information,- determine a third suitability value for the first lighting device (51) based on the capabilities of the first lighting device (51), the third suitability value being indicative of the suitability of the first lighting device (51) for the further use,- output the output signal which suggests swapping the first and second lighting devices (51,52) in dependence on the third suitability value.

8. A system (21) as claimed in any one of claims 5 to 7, wherein the usage information indicates a role of a plurality of roles, the role being assigned to the first lighting device (51) by a user, the plurality of roles comprising a decorative lighting role and a functional lighting role.

9. A system (21) as claimed in any one of claims 5 to 8, wherein the at least one processor (25) is configured to:- determine the first suitability for the first lighting device (51) based on an energy consumption associated with the use of the first lighting device (51) and based on whether the first lighting device (51) is only powered by a battery, and- determine the second suitability for the second lighting device (52) based on the energy consumption associated with the use of the first lighting device (51) and based on whether the second lighting device (52) is only powered by a battery.

10. A system (21) as claimed in any one of the preceding claims, wherein the at least one processor (25) is configured to:- determine whether the first and second lighting devices (51,52) have a same or similar type, and- output the output signal which suggests swapping the first and second lighting devices (51,52) only if it is determined that the first and second lighting devices (51,52) have a same or similar type.2024PF802562911. A system (21) as claimed in any one of the preceding claims, wherein the at least one processor (25) is configured to:- control the first lighting device (51) according to a first light scene before the first and second lighting devices (51,52) are swapped,- control the second lighting device (52) according to a second light scene before the first and second lighting devices (51,52) are swapped,- control the first lighting device (51) according to the second light scene after the first and second lighting devices (51,52) have been swapped, and- control the second lighting device (52) according to the first light scene after the first and second lighting devices (51,52) have been swapped.

12. A system as claimed in any one of the preceding claims, wherein the at least one processor (25) is configured to:- receive information indicating that the first and second lighting devices (51,52) have been swapped,- reconfigure the lighting system (40) such that a configuration associated with the first lighting device (51) before the first and second lighting devices (51,52) have been swapped is associated with the second lighting device (52) after the first and second lighting devices (51,52) have been swapped, and- reconfigure the lighting system (40) such that a configuration associated with the second lighting device (52) before the first and second lighting devices (51,52) have been swapped is associated with the first lighting device (51) after the first and second lighting devices (51,52) have been swapped.

13. A system (21) as claimed in claim 12, wherein the configurations specify one or more of a group, a location, and an assigned functionality.

14. A method of determining an energy consumption impact in relation to a first lighting device and a second lighting device in a lighting system, the first lighting device being located at a first location and the second lighting device being located at a second location, the method comprising:- obtaining (101) one or more signals indicative of a first energy efficiency of the first lighting device and a second energy efficiency of the second lighting device different from the first energy efficiency of the first lighting device,2024PF8025630- determining (103) an energy consumption impact of swapping the first lighting device with the second lighting device based on the first and second energy efficiencies, and- outputting (113) an output signal which suggests swapping the first lighting device with the second lighting device if the energy consumption impact corresponds to an energy consumption reduction.

15. A computer program product for a computing device, the computer program product comprising computer program code to perform the method of claim 14 when the computer program product is run on a processing unit of the computing device.

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