IT202000003113A1 - Luminaire and system for remote control of a lighting device through an electric power cable - Google Patents

Description

DESCRIPTION

Attached to a patent application for INDUSTRIAL INVENTION having the title

? Luminaire and system for controlling a lighting device remotely through an electric power cable?

FIELD OF APPLICATION

The present invention relates to an apparatus for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for a lighting device, a system and a method for remote control through a cable power supply of a lighting device.

In particular, the present invention relates to remote control via a power cable of an outdoor lighting system. The main field of application of the present invention are lighting systems, both external (roads, car parks, tunnels, etc.) and internal (offices, warehouses, homes, etc.).

Are they possible for? other fields of application, the device made in fact allows it to be connected to any other electrical device via serial communication, analog 0-10 V or via DALI protocol, so it can? be used as an alternative remote communication module to traditional systems such as radio waves, systems with dedicated wiring or conveyed waves.

TECHNIQUE NOTE

How ? known, there are control devices for lighting systems capable of communicating via radio waves using various known protocols (such as, for example, Bluetooth Low Energy, ZigBee, WiFi, etc.), in a wide range of frequencies (169 MHz? 5 GHz), and in various configurations (Star, mesh, etc.).

Devices for controlling lighting systems are also known which use a conveyed wave, narrowband and broadband communication module.

As an alternative to remote control systems for lighting systems,? possible to use? stand-alone? commonly referred to as 'virtual midnight'. These known devices do not have a communication system, have a factory-programmed operating profile and regulate the operation of the lamp according to this operation (e.g. from 21:00 to 00:00 it operates at 75%, after that at 50% until shutdown). These known devices, not being able to have a clock, work through an algorithm for calculating the time by calculating the? Virtual midnight ?.

Is the time estimate based on how long? duration of the last ignition, and indicating as midnight the half? lasting. For example, if the duration of the previous night? was 12 hours, the device estimates that after 6 hours from the ignition it will be? midnight, which is estimated to have turned on at 18:00.

These known devices cannot regulate on and off cycles (it must be done from the power supply panel), they cannot communicate the status of the lamp or connect with other sensors and they do not have an internal clock.

Devices capable of transmitting in powerline are also known. However, these devices transmit a signal that degrades quickly according to the distance traveled on the power cable and are therefore limited to distances of a few meters. Therefore, they cannot be applied to outdoor lighting systems, without having to resort to the use of signal repeaters and special filters. The aforementioned systems with communication via radio or conveyed waves present the following problems:? the quality? signal degrades quickly with increasing distance, so? it is necessary to install numerous repeaters and / or concentrators in order to minimize the distance traveled by the signal; ? are subject to interference:

o radio, in the case of devices with communication via radio;

o electrical loads, in the case of conveyed wave devices;

? high energy absorbed in order to keep the communication channel open;

? the start-up time of the communication network (in some cases it can be up to 1 hour to organize communication with all the nodes of the network). This obliges to keep the power supply systems always live in order to have a reliable communication;

? difficulty? installation: the radio devices must be installed outside the lamp, or at least have an external antenna. The conveyed wave devices, on the other hand, must be installed directly on the power supply network at the mains voltage (230 V 50 Hz in Italy), making the device more? exposed to breakdowns related to overvoltages;

? higher cost of equipment;

? greater number of elements installed: to maintain a stable signal and limit some of the aforementioned inconveniences, various network support devices are installed (repeaters, concentrators, gateways, etc.). This causes an increase in complexity? of the system that causes greater maintenance costs and a greater risk of inefficiencies.

In the case of stand-alone systems at? Virtual midnight? the following disadvantages are highlighted:

- impossibility? to change the operating profile remotely. This lack does not allow to correctly adjust the luminous flux according to the real need? and complicates the management of the lamp park, since, should it be necessary to change the operating power,? it is necessary to intervene on site by replacing the lamp, with obvious problems related to the cost and time required for this adjustment;

- not very precise hours. As previously mentioned, these devices cannot have a clock on board, for this reason they use an algorithm to calculate the time. This algorithm for? Not ? able to take into account various factors such as the time zone, the exact geographical location and the alternation between summer time and winter time, causing errors in the calculation of the time that can? arrive even over an hour;

- lower energy savings obtainable compared to other systems. Since? Not ? Is it possible to adapt the operating profile to the needs? real and not? possible to calculate the time in a precise way, not? possible to take full advantage of the opportunities? savings. The need for luminous flux? regulated according to how many people or traffic are present in the area to be illuminated, if we consider a locality? tourist near the sea we will have 3-4 months a year in which there are many people, and therefore also the lighting needs are greater, in the remaining period the needs are considerably reduced due to the reduced number of people. With standalone systems not? possible to adapt the operation based on the changed flow of people and / or vehicles in circulation, so, throughout the year, there will be? the same level of illumination required during the peak of turnout, thus wasting a considerable amount? of energy;

- lack of feedback on operation. Not being able to communicate? impossible to know if the lamp is working properly.

SUMMARY OF THE INVENTION

Purpose of the present invention? to provide a luminaire for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for a lighting device, a system and a method for remote control through an electric power cable of a lighting device that solves the technical problems described above, obviates the drawbacks and overcomes the limits of the known art, allowing to maintain the benefits of traditional radio and transmitted wave control systems, overcome the technical and management difficulties, and to maintain same simplicity plant engineering of stand-alone systems through virtual midnight.

Another purpose of the present invention? to provide a luminaire for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for a lighting device, a system and a method for remote control through an electric power cable of a lighting device that is able to communicate remotely through an electric power cable even at a distance of several km.

Another object of the present invention? to provide a luminaire for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for a lighting device, a system and a method for remote control through an electric power cable of a lighting device that is able to guarantee a high level of safety.

A further purpose of the present invention? to provide a luminaire for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for a lighting device, a system and a method for remote control through an electric power cable of a lighting device that is fast and efficient.

Not the last object of the present invention? to provide a luminaire for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for a lighting device, a system and a method for remote control through an electric power cable of a lighting device that is highly reliable, easy to make and simple to use.

These and other purposes are achieved by an apparatus for remotely controlling a lighting device through an electric power cable as described in claims 1 to 7.

These and other purposes are also achieved by a lighting device as described in claims 8 and 9.

These and other purposes are also achieved by a power supply for a lighting device as described in claim 10.

These and other purposes are also achieved by a system for remote control by means of a power cable of lighting devices as described in claims 11 to 17.

Further characteristics and advantages of the invention will become clearer from the description of a preferred, but not exclusive, embodiment of an apparatus for controlling a lighting device remotely through an electric power cable, a lighting device, a power supply for lighting device, a system and a method for remote control through an electric power supply cable of a lighting device according to the invention, illustrated, by way of non-limiting example, with reference to the attached drawings.

BRIEF DESCRIPTION OF THE FIGURES

Such a description? provided below with reference to the accompanying figures, also having purely illustrative and therefore non-limiting purposes, in which:

Figure 1 illustrates a general functional block diagram relating to a possible architecture of the system according to the invention;

- figure 2? a block diagram illustrating in greater detail the communication apparatus of the architecture of Figure 1;

- figure 3? a block diagram illustrating in greater detail the lighting device of the architecture of Figure 1;

Figure 4 illustrates a functional block diagram of another architecture of the system according to the invention.

DETAILED DESCRIPTION

With reference to the aforementioned figures, the remote control system through an electric power supply cable of a lighting device according to the present invention? shown in figure 1.

The system comprises an apparatus 10, as illustrated in detail in Figure 2, for the remote control of one or more? lighting devices 20 through a power supply cable 30, a plurality of of lighting devices 20 (shown in Figure 3), each equipped with an electric power supply 21.

In particular, the apparatus 10 comprises a unit? control signal 11 configured to generate first control signals s1 to drive the power supply 21 of the lighting device 20, a transceiver 12 configured to transmit or receive the first control signals s1 through an electric power supply cable 30, used to supply the electricity needed to power the lighting device 20.

The appliance 10 is physically connected to the cable 30 or to the power supply network in such a way that the signal s1 generated by the unit? signal 11 is transmitted through the power cable 30. The signal s1? based on voltage pulses or current pulses or power pulses. A high level represents an impulse and? characterized by a specific duration. Based on the duration and number of pulses? possible to activate a communication system between two or more? devices.

In particular, the device 10? configured to send a signal s1 using duration and number of pulses.

The first four pulses s11, s12, s13, s14 of the signal s1 generated by the device 10 are used to synchronize the? Clock? of the various devices 10 connected to each other in the system.

In this way, any differences in speed are corrected. of the? clock? of each appliance 10 connected to the system and any delays in communication linked to the characteristics of the electrical network on which the pulses are sent.

The fifth pulse s15 is used to warn the devices 10 of the system that the subsequent signals s16, s17, s18 will be addressed to a specific device 10, to a group of devices 10 or in the mode? ? broadcast ?, to all 10 devices present in the system.

For example, if the pulse s15 has a duration of less than 3 sec, it means that the subsequent signals s16, s17, s18, s1i? that will follow will be sent in modality? ? broadcast? to all the devices 10 present in the system and connected to an electric cable 30.

If, on the other hand, the duration of the fifth pulse s15? between 3 sec and 20 sec, it means that the following signals s16, s17, s18? which will follow will be sent to a specific group of lighting devices 20, identified by a unique code of group ID_GRP of lighting devices 20. In this case, pulse durations s15 of 2 sec and multiples, between 3 sec and 20 sec, identify a particular unique code of group ID_GRP.

If the duration of the fifth pulse s15? greater than 20 sec, it means that the following signals s16, s17, s18, s1i? which follow will be sent to a specific lighting device 20. In this situation, the duration of the pulse s15? indicative of the ID code of the single addressed lighting device.

All the pulses subsequent to the pulse s14 contain the message to be communicated to a determined lighting device 20 of the system. In particular, the pulses s15, s16 and s17, subsequent to the fourth pulse s14 of the signal s1, are used to address a control command fi to a specific lighting device 20. Alternatively, the pulse s15 relating to the control command fi can be sent through the power cable 30 in mode? ? broadcast? to all lighting devices 20 of the system.

The control command fi pu? also be composed of more? of a pulse of the signal s1.

In a non-limiting embodiment of the invention, the message is sent in? Tabular? Form. and any value? sent through a group of at least three pulses. The first two pulses indicate the address of the table as? Line? and? column? reference, the third pulse indicates the value to be sent or the function to be activated. The value and addresses are calculated based on the pulse duration.

In other words, to send a specific control command fi to a lighting device 20, a signal composed of at least three pulses s16, s17, s18 is generated and sent, of which the first two pulses s16, s17 identify an address of a table T and the third pulse s18? an indicative value of a function to be activated on the lighting device 20.

For example, ? It is possible to set a standard duration of a pulse equal to 1 second. In this case, if you wanted to send the value 5 to address (4; 2), the three pulses s16, s17, s18 to be sent would have the following duration: 5 seconds, 3 seconds and 6 seconds. Each pulse must be followed by a period of low or zero voltage level whose duration is not? fundamental for communication purposes, so? convenient to choose the longer duration? small possible holding for? in consideration of the characteristics of the electrical network. On the same cable 30 can? pass only one signal at a time.

If necessary, for any specific characteristics of the process or device to be controlled,? It is possible to invert the pulses, thus using the low value instead of the high value as a communication channel.

By applying this communication protocol in the field of lighting? It is possible to remotely control the lighting devices 20 by connecting an apparatus 10 capable of communicating with a power supply 21 for lighting devices 20 (in particular for LED lamps) and of exploiting the communication protocol described above. In other words, by connecting more? communication apparatus 10 in as many lighting devices 20 and at least one remote communication apparatus 10, all connected by the electrical network,? possible control of lighting devices. ? It is also possible to install a communication apparatus 10 in an electrical panel 6 of the electrical network to which they are connected by means of a 30 pi? lighting devices 20.

The system according to the invention operates over distances, between the remote device 10 and the device 10 present on the electrical panel 6 or on the lighting device 20 plus. distant, up to 10 km.

Preferably, it is possible to reach distances of a few tens of km.

The limit of distance? linked to the decay of the voltage along the power line. For example, if the voltage drops too much, then the pulse is high? it could not be received by the luminaire installed on the lighting device 20. However, if this happened then the lighting device 20 would not be able to switch on either, so that in this case the lack of communication would not be a problem.

In practice, the maximum effective distance depends on how? the electrical system has been designed, and the limit coincides with the distance of the lighting device pi? far away (typically no more than 10 km of power line).

To increase the signal strength s1 and far s? that can travel a few km away without losing quality, in the application for street lighting? a low value has been chosen for the voltage impulse of less than 2 V. In practice, the card of the communication device 10 is completely disconnected during the low impulse period. ? it was therefore necessary to develop a circuit inside the apparatus 10 capable of keeping the microprocessor powered for a few seconds, even during the low pulse period, therefore without external power.

In particular, ? a very efficient processor was chosen, and? A capacitor has been integrated that can compensate for the lack of voltage for a few seconds.

In this case, the impulse can? be defined as voltage above a certain threshold value (commonly between 10 V and 30 V).

The appliance 10 works in the mode? stand-alone and applies the operation based on the last setting received, this for? can be modified at any time by exceeding cos? the limits imposed by common stand-alone devices. Also, like this? It is possible not only to change the settings of the individual lighting devices 20, but also to synchronize the clock and thus avoid possible errors in the calculation of the time.

Finally, also the lighting device 20, thanks to the fixture 10,? able to communicate its operating status and possibly data received from installed sensors. In this case the impulse is not? defined on the basis of the voltage value (the lamp has no way of varying the mains voltage) but? according to the absorbed power or the electric current: increasing or decreasing the current absorbed by the lighting device 20? possible to send impulses that can be interpreted by a centralized device 10 which? able to monitor the parameters of the power grid.

In the system there will be? a fixture 10 associated with each lighting device 20 and at least one fixture 10 placed in a remote position, in connection with the power cable 30, so that the remote fixture 10 can communicate with the protocol described above, sending commands fi through the power cord 30.

The remote control unit 10 can? be installed on the electrical panel 6 to which a certain number of lighting devices 20 are connected.

Advantageously, the remote apparatus 10 comprises a second transceiver 13 configured to transmit or receive a second signal s2 in mode? wirelessly or through a data line.

The sending of impulses from the electrical panel 6 to the lighting device 20 takes place without problems since? ? simple to create clear and evident voltage pulses, easily recognizable by the devices on the lamp; pi? complex? on the other hand, the recognition by the device on the electrical panel 6 of the power or absorbed current pulses sent by the lamps.

The LED lamps installed today have a typical power between 15 W and 70 W,? It is therefore necessary to install a sufficiently precise measuring instrument on board the panel 6 in order to detect power pulses of 10 W.

In a second aspect, the present invention relates to a lighting device 20 comprising an apparatus 10 as described above. The lighting device 20 comprises a power supply 21 connected to an electric power supply cable 30.

In a third aspect, the present invention relates to a power supply 21 for lighting devices 20 comprising the apparatus 10 as described above.

In a fourth aspect, the present invention relates to an electrical power supply panel 6 connected to a power supply cable 30 to which in turn a plurality of power supplies are connected. of lighting devices 20, in which? installed a cable communication device as described above.

In a fifth aspect, the present invention relates to a method for remote control by means of a power supply cable 30 (of the electrical network) of lighting devices 20 comprising the steps of: connecting a remote appliance 10 as described above to a power supply network electric 30; connect an apparatus 10 to a power supply 21 configured to electrically power a lighting device 20 connected to the electrical network 30. The communication apparatus 10 can? also be connected to an electrical panel 6 of the electrical network, from which in turn are connected a plurality of of lighting devices 20.

In the system according to the invention, as illustrated in Figures 2 and 4,? present a remote server 40, in connection through a telematic network 31 with one or more? remote communication apparatuses 10, connected through an electric supply cable 30 to a plurality of of lighting devices 20.

The appliance 10 and the remote server 40 are equipped with interfaces that allow them to communicate with each other via the telematic communication network 31.

The telematic network 31? preferably the Internet, but also an intranet or any private network capable of implementing a client-server communication protocol. The telematic network 31? connected, where necessary, to mobile networks for communication between the remote server 40 and the appliance 10.

In order to optimize the communication system and the operation of the lighting devices 20, the remote server 40 (a cloud platform)? configured to monitor the operation of the lighting systems 20, analyze the data on pedestrian and vehicular traffic in correspondence with the devices 20, check the weather conditions and georeference each element of the system.

In this way all the controls on the lighting systems 20 are automated and its operating parameters fi can be adjusted in real time on the basis of the data received from the field.

Furthermore, ? It is possible to optimize maintenance interventions thanks to the on-board diagnostics of the lighting devices 20 and also to exploit predictive maintenance algorithms.

The remote server 40 comprises an access module that makes it accessible to the user via a website or app, and a module that allows you to create more? users with different level permissions.

Each user will be? capable of displaying on a personal electronic device 50, connectable to the remote server 40, information relevant for the management and control of the devices 20 and appliances 10 present in a given system.

Specifically, on the cloud platform or remote server 40 a table is created which keeps track of each individual lighting device 20 present for example in the area (outdoor system), assigns it the geographical coordinates and connects it to a reference electrical panel 6:

All the lighting devices 20 are displayed on the personal electronic device 50 of a particular user on a map which can be displayed. be 2D or 3D, satellite, road or hybrid.

In this way the user can? select directly from the map the lighting device or devices 20 whose settings you want to change or read the parameters. Also, in the table above? It is possible to add further information regarding the lamps such as, for example, rated power, type of support of the lighting device 20, height of the same, and similar information. With this additional data? It is possible to show the user a different icon based on the data entered, so? as highlighted in the example above; this further simplifies the action of the user, as? capable of immediately recognizing the type of lighting device 20 shown on the map, without having to read a personal data sheet or a legend.

Beyond the shapes of icons? It is possible to change the color dynamically on the basis of a value in the personal data table or on the basis of an operating status or a received signal (for example red if? in alarm).

With this system we exploit the capacity? of people to analyze a large amount? of data through a graph or an image, which would be much more? complex if the data were presented in tabular form.

These same data are also used by the automatic control system, both to address the commands to be sent and to analyze the signals from the field; for example, knowing the exact geographical coordinates of the lamp allows you to set the clock correctly taking into account the actual sunrise and sunset times and the local weather conditions, in order to adjust the on, off and dimming cycles, thus reducing? waste of energy.

The solution described above could be integrated directly into the power supplies for lighting devices or LED lamps. ? in fact, a small hardware change to the device 20 is sufficient for? can use this communication system and be so? integrated into the management software platform.

This would be the ideal solution, through the integration inside the LED drivers it would be possible to use more pulses. quickly and further reduce the possible problems related to noise.

It would be possible to use even the low pulses to increase the speed? of communication. At the moment, in the tests carried out, only the? High? Pulses were used, exploiting both at the same time could double the speed? of communication.

By connecting the device or luminaire 10 to a power supply 21 for lighting devices 20, for example dimmable LED lamps,? Is it possible to remotely control, in a timely manner, each single lamp 20, by adjusting the level of brightness? and the absorbed power, turn it on or off, check the correct operating status of the power supply and the LED plate, and possibly collect data from installed sensors, for example an accelerometer to evaluate the maintenance status of the support.

How can the skilled person? to understand well, the invention allows to overcome the drawbacks highlighted above with reference to the known art.

In particular, the present invention allows a considerable reduction of the costs of realization of remote controlled systems, simplification of the installation and reduction of the maintenance costs of the communication infrastructure.

The invention as described allows to overcome the problems of radio or conveyed wave communication systems. In particular, the invention described here achieves the following technical effects:

- Communication between communication devices can? take place on the same power supply line as the lighting device and the lamp, so? It is possible to take advantage of existing electrical cables.

- The quality? of the signal is maintained even at considerable distances (a few km), so not? it is necessary to install repeaters and / or concentrators. - Reduced possibility? d? interference.

- Do not ? it is necessary to keep the communication channel open even when no message is sent, so the power of the devices? very small (in the order of mW).

- No start-up time of the communication infrastructure. - Do not ? it is necessary to install external antennas and can? also be connected downstream of the lamp power supply, thus reducing? the risk of failure linked to grid overvoltages.

- Very simple and low cost hardware technology characterized mostly? from passive components.

- Reduced number of devices. ? a luminaire per lamp and a gateway connected to the internet are sufficient. The number of devices that can? be managed by a single gateway? linked to the capacity? calculation of the same: using 8-bit systems it is possible to manage up to 254 addressable devices for a single power line and an unlimited number of non-addressable devices. The real limit? therefore imposed by electrical parameters linked to the infrastructure of the lighting system and not to the control devices or the communication system adopted, in these cases usually the 100 lamps installed per power line are not exceeded.

- Complete remote control, thus exceeding all the limits of stand-alone devices.

? it is clear that the specific characteristics are described in relation to different embodiments of the invention with an illustrative and non-limiting intent. Obviously a technician in the field will be able? to make further modifications and variations to the present invention, in order to satisfy contingent and specific needs. For example, the technical characteristics described in relation to an embodiment of the invention can be extrapolated therefrom and applied to other embodiments of the invention. Such modifications and variants are however contained within the scope of protection of the invention, as defined by the following claims.

In the claims, the word "comprising" does not exclude other elements or steps and the indefinite article "a" or "one" does not exclude a plurality of elements. of elements or devices. A single processor or other unit? processing can? fulfill the functions of various devices mentioned in the claims. The mere fact that some elements are present in mutually different dependent claims does not indicate that a combination of such measures cannot be used to the advantage of the present invention.

Claims (17)

CLAIMS 1. Apparatus (10) for remote control of a lighting device (20) through an electric power supply cable comprising a power supply (21), said apparatus (10) comprising: a unit? control (11) configured to generate first control signals (s1) for said power supply (21); a transceiver (12) configured to transmit or receive said first control signals (s1) through an electric power supply cable (30) used to supply electric power to said lighting device (20). Apparatus (10) according to claim 1, wherein the signal (s1) transmitted through the power cable (30)? based on voltage pulses or current pulses or power pulses. 3. Apparatus (10) according to one or more? of the preceding claims, wherein the signal (s1)? configured to communicate using duration and number of pulses. 4. Apparatus (10) according to one or more? of the preceding claims, in which the first four pulses (s11, s12, s13, s14) of the signal (s1) are used to synchronize the? clock? of the various devices (10) connected to each other. 5. Apparatus (10) according to one or more? of the preceding claims, in which the signals subsequent to the fourth pulse (s14) of the signal (s1) are used to address a control command (fi) to a specific lighting device (20). 6. Apparatus (10) according to one or more? of the preceding claims, in which the fifth signal (s15) of the signal (s1) is used to send a listening alert for the subsequent signals (s16, s17, s18) arriving in mode? ? broadcast? to all lighting devices (20) connected by the power cable (30) or to a specific group of lighting devices (20). 7. Apparatus (10) according to one or more? of the preceding claims, comprising a second transceiver (13) configured to transmit or receive a second signal (s2) in mode? wirelessly or through a data line. 8. Lighting device (20) comprising an apparatus (10) according to one or more? of the previous claims. Lighting device (20) according to claim 8, comprising a power supply (21) connected to a power supply cable (30). Power supply (21) for lighting device (20) comprising the fixture (10) of claim 1. 11. System for the remote control via power cable (30) of lighting devices (20) comprising: an apparatus (10) according to one or more? of claims 1 to 9; a power supply (21) according to claim 12 and at least one lighting device (20) according to claim 10 or 11 connected to an electric power supply cable (30). System for remote control by means of a power supply cable (30) according to claim 11, wherein said apparatus (10)? installed on an electrical panel (6) connected to a plurality of of lighting devices (20). 13. System for remote control via power cable (30) according to one or more? of the preceding claims 11 or 12, wherein said lighting device (20)? an LED lamp. 14. Remote control system via power cable (30) according to one or more? of the preceding claims 11 to 13, comprising a noise attenuation device configured to clean the signal (s1) from the presence of noise. 15. System for remote control via power cable according to one or more? of claims 11 to 14, wherein the control command (fi) comprises at least: the luminance, chromaticity, RGB color, switching on, off and dimming of the lighting device (20) to which? associated. 16. System for remote control via power cable (30) according to one or more? of claims 11 to 15, wherein the lighting device (20)? configured to transmit its operating status and other information according to the absorbed power or the electric current absorbed by the lighting device (20). 17. System for remote control via power cable (30) according to one or more? of claims 11 to 16, comprising a remote server (40) comprising a table (T) in which at least the following information is stored: - a unique code (id) of each lighting device (20) present in the system; - a unique code (Qid) relating to the reference frame to which each lighting device (20) is connected; - the geographic coordinates (lat_i, lon_i) in which each lighting device (20) is installed.