SYSTEM COMPRISING A LUMINAIRE AND A CAMERA MODULE

Abstract

The present invention provides a system comprising a luminaire and a camera module. The luminaire and the camera module each comprise an interface for mechanically and electrically connecting the camera module and the luminaire with each other. The luminaire is configured to electrically supply the camera module with electrical energy via the interface of the luminaire and the interface of the camera module, when the interface of the camera module is electrically and mechanically connected to the interface of the luminaire. The camera module comprises a control circuit and at least one image sensor. The image sensor is configured to detect an image of an area within the detection field of the camera module and provide the image in the form of image data to the control circuit. The control circuit is configured to determine information on the area by extracting the information from the image data.

Claims

1. A system (1) comprising a luminaire (2) and a camera module (3), wherein the luminaire (2) and the camera module (3) each comprise an interface (21, 31) for mechanically and electrically connecting the camera module (3) and the luminaire (2) with each other, the camera module (3) is configured to be mechanically and electrically connected to the luminaire (2) by mechanically and electrically connecting the interface (31) of the camera module (3) to the interface (21) of the luminaire (2), and the luminaire (2) is configured to electrically supply the camera module (3) with electrical energy via the interface (21) of the luminaire (2) and the interface (31) of the camera module (3), when the interface (31) of the camera module (3) is electrically and mechanically connected to the interface (21) of the luminaire (2), wherein the camera module (3) comprises a control circuit (32) and at least one image sensor (33), the at least one image sensor (33) is configured to detect an image of an area within the detection field of the camera module (3) and provide the image in the form of image data to the control circuit (32), and the control circuit (32) is configured to determine information on the area by extracting the information from the image data.

2. The system (1) according to claim 1, wherein a housing of the luminaire (2) comprises the interface (21) of the luminaire (2) for mechanically and electrically connecting the camera module (3) to the housing of the luminaire (2).

3. The system (1) according to claim 1, wherein the interface (21) of the luminaire (2) is arranged at the housing of the luminaire (2), and the interface (31) of the camera module (3) is arranged at the camera module (3) such that the at least one image sensor (33) of the camera module (3) is configured to detect an image of an area that is illuminable by the luminaire (2), when the interface (31) of the camera module (3) is electrically and mechanically connected to the interface (21) of the luminaire (2).

4. The system (1) according to claim 1, wherein the information on the area comprises at least one of: an occupancy of the area with one or more physical objects including with one or more persons and/or vehicles; a movement of the one or more physical objects including the one or more persons and/or vehicles; information on distance between persons, when persons are present in the area; one or more characteristics of the one or more physical objects including the type of the one or more physical objects; and a condition of the area.

5. The system (1) according to claim 1, wherein the camera module (3) comprises a communication interface configured to communicate with extern.

6. The system (1) according to claim 5, wherein the luminaire (2) comprises a communication interface configured to communicate with extern, and the communication interface of the luminaire (2) and the communication interface of the camera module (3) are configured to communicate with each other.

7. The system according to claim 6, wherein the communication interface of the luminaire (2) and the communication interface of the camera module (3) are configured to wirelessly communicate with each other, and/or the communication interface of the luminaire (2) is part of the interface (21) of the luminaire (2) and the communication interface of the camera module (3) is part of the interface (31) of the camera module (3) so that the communication interface of the luminaire (2) and the communication interface of the camera module (3) are configured to communicate with each other, when the interface (31) of the camera module (3) is electrically and mechanically connected to the interface (21) of the luminaire (2).

8. The system (1) according to claim 6, wherein the control circuit (32) of the camera module (3) is configured to transmit, via the communication interface of the camera module (3), the determined information on the area to the communication interface of the luminaire (2), and the communication interface of the luminaire (2) is configured to provide the determined information on the area, received from the communication interface of the camera module (3), to a control circuit (23) of the luminaire (2) for controlling illumination of the luminaire (2).

9. The system (1) according to claim 6, wherein the luminaire (2) comprises a wired bus (22) electrically connected to a control circuit (23) of the luminaire (2) for controlling illumination of the luminaire (2), and the communication interface of the luminaire; and the communication interface of the camera module (3) is configured to communicate with the control circuit (23) of the luminaire (2) via the communication interface and the wired bus (22) of the luminaire (2).

10. The system (1) according to claim 9, wherein the control circuit (32) of the camera module (3) is configured to transmit via the communication interface of the camera module (3) to the communication interface of the luminaire (2) one or more bus signals for controlling the illumination by the luminaire (2) based on the determined information on the area, and/or the determined information on the area, and the communication interface of the luminaire (2) is configured to input the one or more bus signals and/or the determined information on the area, received from the communication interface of the camera module (3), to the wired bus (22) of the luminaire (2).

11. The system (1) according to claim 5, wherein the system comprises a gateway (4) for communicating with a network (5), optionally a cloud network, and the communication interface (26b) of the luminaire (2) is configured to wirelessly communicate with the gateway (4) and/or the communication interface (35b) of the camera module (3) is configured to wirelessly communicate with the gateway (4).

12. The system (1) according to claim 11, wherein the communication interface (26b) of the luminaire (2) is configured to wirelessly transmit data, including the determined information on the area, received from the communication interface of the camera module (3) to the gateway (4), and/or the communication interface (35b) of the camera module (3) is configured to wirelessly transmit data, including the determined information on the area, to the gateway (4).

13. The system (1) according to claim 1, wherein the system comprises two or more of the luminaire (2a, 2b), and the camera module (3) is configured to be electrically and mechanically connected to one of the two or more of the luminaire (2a, 2b).

14. The system (1) according to claim 13, wherein the system comprises two or more of the camera module (3a, 3b), and each of the two or more of the camera module (3a, 3b) is configured to be electrically and mechanically connected to a respective one of the two or more of the luminaire (2a, 2b).

15. The system according (1) to claim 14, wherein the two or more of the camera module (3a, 3b) are configured to wirelessly communicate with each other.

16. The system according to claim 1 wherein the luminaire is an outdoor luminaire.

17. The system according to claim 4 wherein the condition of the area is a street condition of the area.

18. The system according to claim 9 wherein the wired bus is a DALI bus or DALI-2 bus.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0103] In the following, the invention is described exemplarily with reference to the enclosed figures, in which

[0104] FIG. 1 exemplarily shows a schematic side view of a system according to an embodiment of the present invention;

[0105] FIG. 2 exemplarily shows a schematic side view of a camera module of a system according to an embodiment of the present invention, wherein the function of the camera module is presented in form of an exemplary block diagram;

[0106] FIG. 3 exemplarily shows a block diagram of a system according to an embodiment of the present invention;

[0107] FIG. 4 exemplarily shows a block diagram of a system according to an embodiment of the present invention;

[0108] FIG. 5 exemplarily shows a block diagram of a system according to an embodiment of the present invention;

[0109] FIG. 6 exemplarily shows a block diagram of a system according to an embodiment of the present invention; and

[0110] FIG. 7 exemplarily shows a block diagram of a system according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0111] In the Figures, corresponding elements have the same reference signs. The proportions and dimensions of the elements shown in FIGS. 1 and 2 do not represent the elements of the system to scale, but are merely chosen to describe the function of the system.

[0112] FIG. 1 exemplarily shows a schematic side view of a system according to an embodiment of the present invention.

[0113] The system 1 of FIG. 1 comprises a luminaire 2 and a camera module 3. The above description of the system according to the first aspect of the present invention is correspondingly valid for the system 1 of FIG. 1. The luminaire 2 of FIG. 1 is exemplarily a street luminaire. As described above the present invention is not limited to a street luminaire and may be any other outdoor luminaire or any indoor luminaire known in the art. Therefore, the following description is correspondingly valid for any other luminaire type. The luminaire 2 may comprise a head part 20a comprising at least one lighting means for providing the illumination by the luminaire 2 and a pole 20b for positioning the head part over ground (e.g. a ground).

[0114] As shown in FIG. 1, the luminaire 2 may comprise a mechanical and electrical interface 21 (may be abbreviated by interface). The camera module 3 may comprise a mechanical and electrical interface 31 (may be abbreviated by interface). The two interfaces 21 and 31 are configured to be mechanically and electrically connected to each other in order to electrically and mechanically connect the camera module 3 to the luminaire 2. This state is shown in FIG. 1.

[0115] The interface 21 of the luminaire 2 is arranged at the luminaire 2 and the interface 31 of the camera module 3 is arranged at the camera module 3 such that the camera module (in particular at least one image sensor of the camera module) is configured to detect at least an area that is illuminated by the luminaire 1, when the interface 21 of the luminaire 2 and the interface 31 of the camera module 3 are electrically and mechanically connected to each other. The luminaire 2 is configured to electrically supply the camera module 3 via the interface 21 and the interface 31, when the interface 21 and the interface 31 are electrically and mechanically connected to each other.

[0116] According to FIG. 1, the interface 21 of the luminaire 2 is arranged at the head part 21 of the luminaire 2. This is only by way of example and, thus, the interface 21 of the luminaire 2 may be arranged at a different position of the luminaire 2, e.g. at the pole 20b, as long as the detection field of the camera module 3 comprises an area that is relevant with regard to the illumination by the luminaire 2, when the interface 31 of the camera module 3 is electrically and mechanically connected to the interface 21 of the luminaire 2. The position of the interface 31 at the camera module 3 may be different compared to the one shown in FIG. 1. For example the interface 21 may be arranged at a side of the pole 20b and the interface 31 may be arranged at a side of the camera module 3.

[0117] For further information on the system 1 of FIG. 1, in particular the function and components of the luminaire 2 and the camera module 3, reference is made to the above description of the system according to the first aspect of the present invention and the following description of FIGS. 2 to 7.

[0118] FIG. 2 exemplarily shows a schematic side view of a camera module of a system according to an embodiment of the present invention, wherein the function of the camera module is presented in form of an exemplary block diagram.

[0119] The above description of the camera module of the system according to the first aspect of the present invention is correspondingly valid for the camera module of FIG. 2.

[0120] As shown in FIG. 2, the camera module 3 may comprise an interface 31 for electrically and mechanically connecting the camera module 3 to a corresponding interface of a luminaire of the system (not shown in FIG. 2). The camera module 3 may be electrically supplied via the interface 31 from the interface of the luminaire, when the interface 31 is electrically and mechanically connected to the interface of the luminaire. The camera module 3 further may comprise a control circuit 32 and at least one image sensor 33. The control circuit 32 and the at least one image sensor 33 may be electrically supplied with electrical energy via the interface 31. The at least one image sensor 33 is configured to detect an image of an area within the detection field of the camera module 3 and provide the image in the form of image data to the control circuit 32. The control circuit 32 is configured to determine information on the area by extracting the information from the image data. The camera module 3 may in addition comprise an optical arrangement 34 comprising one or more lenses. The optical arrangement 34 may be configured to adjust the detection field of the camera module 3. The optical arrangement may be implemented according to any optical arrangement known in the art.

[0121] For further details on the camera module 3, in particular the information that may be determined by the control circuit 32 based on the image data provided by the at least one image sensor 33, reference is made to the above description of the system according to the first aspect of the present invention and the following description of FIGS. 3 to 7.

[0122] FIG. 3 exemplarily shows a block diagram of a system according to an embodiment of the present invention.

[0123] FIG. 3 shows an embodiment according to which, the luminaire 2 comprises a communication interface and the camera module 3 comprises a communication interface, wherein the communication interface of the luminaire 2 is part of the mechanical and electrical interface 21 of the luminaire 2 and the communication interface of the camera module 3 is part of the mechanical and electrical interface 31 of the camera module 3. Thus, according to the embodiment of FIG. 3, the luminaire 2 and the camera module 3 may communicate with each other via the interface 21 of the luminaire 2 and the interface 31 of the camera module 3, when the interface 31 of the camera module 3 is electrically and mechanically connected to the interface 21 of the luminaire 2.

[0124] As shown in FIG. 3, the luminaire 2 may comprise a control circuit 23 configured to control the illumination by the luminaire 2; at least one lighting means 25 configured to provide the illumination by the luminaire 2 and an electrical supply circuit 24 configured to electrically supply the at least one lighting means 25 with electrical energy. That is, the at least one lighting means 25 corresponds to the lighting source of the luminaire 2. The electrical supply circuit 24 may be connected to an external energy source, such as mains (not shown in FIG. 3). The electrical supply of the control circuit 23 is not shown in FIG. 3 and may be implemented by any means known in the art. As indicated in FIG. 3, the luminaire 2 may provide electrical energy from the electrical supply circuit 24 via the interface 21 to the interface 31 of the camera module 3 for electrically supplying the camera module 3, when the interfaces 21 and 31 are electrically and mechanically connected to each other.

[0125] The luminaire 2 may comprise a wired bus 22, such as a DALI bus or DALI-2 bus, allowing communication between the components connected to the bus 22. The control circuit 23, the electrical supply circuit 24 and the interface 21 may be connected to the wired bus 22. The electrical supply of the wired bus 22 is not shown in FIG. 3 and may be implemented by any means known in the art. Optionally, the electrical supply circuit 24 may be configured to electrically supply the wired bus 22.

[0126] The control circuit 23 may be configured to control the electrical supply circuit 24 by communicating one or more bus signals via the wired bus 22 to the electrical supply circuit 24. In particular, the control circuit 23 may be configured to control the amount of electrical energy provided by the electrical supply circuit 24 to the at least one lighting means 25 and, thus, may control the amount of light emitted by the at least one lighting means 25. The greater the average electrical energy supplied from the electrical supply circuit 24 to the lighting means during a time period the greater is the average amount of light emitted by the at least one lighting means 25 during the time period. The control circuit 23 may receive data via the wired bus from the interface 21, wherein the data are received by the interface 21 from the interface 31 of the camera module 3.

[0127] In particular, the control circuit 32 of the camera module 3 may be configured to communicate via the interface 31 of the camera module 3 data to the interface 21 of the luminaire 2. The interface 21 may be configured to input the received data to the wired bus 22. Thus, the data received by the interface 21 of the luminaire 2 may be received by any component of the luminaire 2 connected to the wired bus 22. The data may comprise or correspond to one or more bus signals for controlling the illumination by the luminaire 2 based on information determined by the control circuit 32 of the camera module 3. In addition or alternatively, the data may comprise or correspond to the information determined by the control circuit 32 of the camera module 3.

[0128] The control circuit 23 of the luminaire 2 may be configured to control the illumination by the luminaire, i.e. the light emission by the at least one lighting means 25, based on information received from the camera module 3 (via the interface 31 of the camera module 3, the interface 21 of the luminaire 2 and the wired bus 22). This information comprises or corresponds to information that may be determined by the control circuit 32 of the camera module 3 by extracting the information from image data, which the control circuit 32 may receive from the at least one image sensor 33 of the camera module 3. In addition, the control circuit 31 of the camera module 3 may be configured to control the illumination by the luminaire, i.e. the light emission by the at least one lighting means 25, based on the information determined by the control circuit 32. For this, the control circuit 31 of the camera module 3 may be configured to communicate via the interface 31 of the camera module 3, the interface 21 of the luminaire 2 and the wired bus 22 one or more bus signals to the electrical supply circuit 24. The one or more bus signals may control the electrical energy provided by the electrical supply circuit 24 to the at least one lighting means 25 and, thus, the light emitted by the at least one lighting means 25. Namely, the light emitted by the at least one lighting means 25 and, thus, the illumination by the luminaire 2 is dependent on the electrical energy provided by the electrical supply circuit 24 to the at least one lighting means 25.

[0129] For further information on the system 1 of FIG. 3, in particular the function and components of the luminaire 2 and the camera module 3, reference is made to the above description of the system according to the first aspect of the present invention and the following description of FIGS. 4 to 7.

[0130] FIG. 4 exemplarily shows a block diagram of a system according to an embodiment of the present invention.

[0131] The system of FIG. 4 essentially corresponds to the system of FIG. 3 and, thus, in the following mainly the difference, in particular the additional features shown in FIG. 4 are described. The above description of the system of FIG. 3 is correspondingly valid for the system of FIG. 4.

[0132] As shown in FIG. 4, the communication interface of the luminaire 2 may be formed by two communication interface parts, wherein a first communication interface part 26a may be part of the mechanical and electrical interface 21 of the luminaire 2 and a second communication interface part 26b may be separate of the mechanical and electrical interface 21 of the luminaire 2.

[0133] For example, the first communication interface part 26a may comprise or correspond to at least one electrical connection element (e.g. electrical connector) or at least one conductor loop, optional at least one coil, of the luminaire 2. The first communication interface part 26a of the luminaire 2 may be configured to communicate wired (via the at least one electrical connection element) or wirelessly (via an inductive coupling of the at least one conductor loop, optional at least one coil) with the communication interface of the camera module 3 (being at least partly a part of the interface 31 of the camera module 3). According to the embodiment of FIG. 4, the communication interface of the camera module 3 is part of the mechanical and electrical interface 31 of the camera module 3.

[0134] The second communication interface part 26b may comprise or correspond to a communication unit 26b of the luminaire 2 that is configured to communication with extern (outside the luminaire 2). As indicated in FIG. 4, the communication unit 26b may be configured to wirelessly communicate with extern.

[0135] The system 1 may further comprise a gateway 4, wherein the gateway 4 is configured to communicate with a network 5. The network 5 may be a cloud network. As indicated by the stripped line between the communication unit 26b of the luminaire 2 and the gateway 4, the communication interface of the luminaire 2, in particular the communication unit 26b (being a part of the communication interface of the luminaire 2), may be configured to wirelessly communicate with the gateway 4.

[0136] The communication unit 26b of the luminaire 2 may be electrically connected to the control circuit 23 of the luminaire 2, so that the control circuit 23 may be configured to communicate via the communication unit 26b with extern, e.g. with the gateway 4. As shown in FIG. 4, the communication unit 26b may be electrically connected to the wired bus 22 and, thus, is electrically connected via the wired bus 22 to the control circuit 23. The communication unit 26b may be configured to communicate data communicated via the wired bus 22 (respectively present on the wired bus 22) to extern, optionally without being controlled by the control circuit 23. Thus, the communication unit 26b may be configured to communicate, to extern (e.g. to the gateway 4), information that is received by the interface 21, in particular the first part 26a of the communication interface, of the luminaire 2 and input to the wired bus 22.

[0137] Alternatively, the communication interface of the luminaire 2 may comprise or correspond to only the communication unit 26b configured to wirelessly communicate with extern (not shown in FIG. 4). In this case, the communication interface of the camera module 3 may comprise or correspond to only a communication unit configured to wirelessly communicate with extern, wherein the communication unit of the camera module 3 is electrically connected to the control circuit 32 of the camera module 3. Thus, the communication interface of the luminaire 2, in particular the communication unit 26b, and the communication interface of the camera module 3, in particular the communication unit of the camera module, may be configured to wirelessly communicate with each other. The communication unit 26b of the luminaire 2 may be configured to wirelessly communicate with the gateway 4.

[0138] For more information on the system of FIG. 4, in particular on the communication between the communication interface of the luminaire 2 with the gateway 4 and the communication between the gateway 4 and the network 5, reference is made to the above description of the system according to the first aspect of the present invention.

[0139] FIG. 5 exemplarily shows a block diagram of a system according to an embodiment of the present invention.

[0140] The system of FIG. 5 essentially corresponds to the system of FIG. 3 and, thus, in the following mainly the difference, in particular the additional features shown in FIG. 5 are described. The above description of the system of FIG. 3 is correspondingly valid for the system of FIG. 5.

[0141] The communication interface of the camera module 3 may be formed by two or more communication interface parts, wherein a first communication interface part 35a may be part of the mechanical and electrical interface 31 of the camera module 3 and a second communication interface part 35b may be separate of the mechanical and electrical interface 31. For example, the first communication interface part 35a may comprise or correspond to at least one electrical connection element (e.g. electrical connector) or at least one conductor loop, optional at least one coil, of the camera module 3. The first communication interface part 35a of the camera module 3 may be configured to communicate wired (via the at least one electrical connection element) or wirelessly (via an inductive coupling of the at least one conductor loop, optional at least one coil) with the communication interface of the luminaire 2 (being at least partly a part of the interface 21 of the luminaire 2). According to the embodiment of FIG. 5, the communication interface of the luminaire 2 is part of the mechanical and electrical interface 21 of the luminaire 2.

[0142] The second communication interface part 35b may comprise or correspond to a communication unit 35b of the camera module 3 that is configured to communication with extern (outside the camera module 3). As indicated in FIG. 5, the communication unit 35b may be configured to wirelessly communicate with extern.

[0143] The system 1 may further comprise a gateway 4, wherein the gateway 4 is configured to communicate with a network 5. The network 5 may be a cloud network. As indicated by the stripped line between the communication unit 35b of the camera module 3 and the gateway 4, the communication interface of the camera module 3, in particular the communication unit 35b (being a part of the communication interface of the camera module 35b), may be configured to wirelessly communicate with the gateway 4.

[0144] The communication unit 35b of the camera module 3 may be electrically connected to the control circuit 32 of the camera module 3, so that the control circuit 32 may be configured to communicate via the communication unit 35b with extern, e.g. with the gateway 4. Thus, the communication unit 35b may be configured to communicate information that is determined by the control circuit 32 to extern, e.g. to the gateway 4.

[0145] Alternatively, the communication interface of the camera module 3 may comprise or correspond to only the communication unit 35b configured to wirelessly communicate with extern (not shown in FIG. 5). In this case, the communication interface of the luminaire 2 may comprise or correspond to only a communication unit configured to wirelessly communicate with extern, wherein the communication unit of the luminaire 2 is electrically connected to the control circuit 23 of the luminaire 2. Thus, the communication interface of the camera module 3, in particular the communication unit 35b, and the communication interface of the luminaire 2, in particular the communication unit of the luminaire 2, may be configured to wirelessly communicate with each other. The communication unit 35b of the camera module 3 may be configured to wirelessly communicate with the gateway 4.

[0146] For more information on the system of FIG. 5, in particular on the communication between the communication interface of the camera module 3 with the gateway 4 and the communication between the gateway 4 and the network 5, reference is made to the above description of the system according to the first aspect of the present invention.

[0147] Optionally the embodiment of FIG. 4 and the embodiment of FIG. 5 may be combined in that the communication interface of the luminaire 2 may be formed by two or more communication interface parts, wherein a first communication interface part 26a may be part of the mechanical and electrical interface 21 of the luminaire 2 and a second communication interface part 26b may be separate of the mechanical and electrical interface 21 (cf. FIG. 4). In addition, the communication interface of the camera module 3 may be formed by two or more communication interface parts, wherein a first communication interface part 35a may be part of the mechanical and electrical interface 31 of the camera module 3 and a second communication interface part 35b may be separate of the mechanical and electrical interface 31 (cf. FIG. 5).

[0148] FIG. 6 exemplarily shows a block diagram of a system according to an embodiment of the present invention.

[0149] As shown in FIG. 6, the system may comprise two or more luminaires 2a and 2b and two or more camera modules 3a and 3b. The above description of a luminaire of the system according to the first aspect of the present invention and the systems of FIGS. 1 and 3 to 5 is correspondingly valid for each of the at least two luminaires 2a, 2b. That is, each of the at least two luminaires 2a, 2b may be implemented in line with the luminaire of the system according to first aspect of the present invention, as described above. The above description of a camera module of the system according to the first aspect of the present invention and the systems of FIGS. 1 and 3 to 5 as well as the above description of the camera module of FIG. 2 is correspondingly valid for each of the at least two camera modules 3a, 3b. That is, each of the at least two camera modules 3a, 3b may be implemented in line with the camera module of the system according to first aspect of the present invention, as described above.

[0150] Each camera module may be configured to be electrically and mechanically connected to a corresponding luminaire That is, as shown in FIG. 6, the camera module 3a may be electrically and mechanically connected to the luminaire 2a and the camera module 3b may be electrically and mechanically connected to the luminaire 2b. The camera module 3a and the corresponding luminaire 2a may be configured to communicate with each other and, thus, the camera module 3a may be configured to provide the corresponding luminaire 2a with information. The information in particular corresponds to information determined by the control circuit of the camera module 3a based on image data provided by the at least one image sensor of the camera module 3a. The same is valid for the camera module 3b and the corresponding luminaire 2b. In addition, the at least two luminaires 2a and 2b may be configured to communicate with each other. The communication between a camera module and the corresponding luminaire may be wired or wireless. The communication between the at least two luminaires 2a, 2b may be wireless.

[0151] The system 1 may further comprise a gateway 4, wherein the gateway 4 is configured to communicate with a network 5. The network 5 may be a cloud network. As indicated by the stripped line between each of the at least two luminaires 2a, 2b and the gateway 4, each luminaire of the at least two luminaires 2a, 2b may be configured to wirelessly communicate with the gateway 4.

[0152] For further information on the system 1 of FIG. 6 reference is made to the above description of the system according to the first aspect of the present invention.

[0153] FIG. 7 exemplarily shows a block diagram of a system according to an embodiment of the present invention.

[0154] The system of FIG. 7 essentially corresponds to the system of FIG. 6 and, thus, in the following mainly the difference with regard to the system of FIG. 6 is described. The above description of the system of FIG. 6 is correspondingly valid for the system of FIG. 7.

[0155] According to FIG. 7, the at least two camera modules 3a and 3b may be configured to communicate with each other. The communication between the at least two camera modules 3a and 3b may be wireless. Optionally, the at least two luminaires 2a, 2b are not configured to communicate with each other.

[0156] As indicated by the stripped line between each of the at least two camera modules 3a and 3b and the gateway 4, each camera module of the at least two camera modules 3a and 3b may be configured to wirelessly communicate with the gateway 4. Optionally, the at least two luminaires 2a, 2b are not configured to communicate with the gateway 4.

[0157] Optionally the embodiment of FIG. 6 and the embodiment of FIG. 7 may be combined in that the at least two luminaires 2a, 2b may be configured to communicate with each other and the gateway 4 (cf. FIG. 6). In addition, the at least two camera modules 3a, 3b may be configured to communicate with each other and the gateway (cf. FIG. 7).

[0158] Any wireless communication mentioned herein may be performed according to any wireless communication method known in the art, for example according to the W-LAN industry standard and/or the Bluetooth industry standard. Optionally any communication unit configured for wireless communication mentioned herein may be a wireless telecommunication unit.