Auto-configuration of at least one airport signaling device

Abstract

A system for global auto-configuration of at least one airport signaling device (11) of an aerodrome, said system comprising: a central control unit (14) and signaling devices (11), wherein the central control unit (14) is capable of communicating with the airport signaling devices (11) via the communication module (119) once a communication channel has been initiated; wherein the system is configured to communicate configuration data of at least one signaling device (11) to an Internet of Things (loT) hub (210), namely the identity code and the estimated location of the at least one signaling device; wherein the Internet of Things (loT) hub is capable of data communication with plurality of servers (220) configured to store inventory data related to a set of registered airport aeronautical signaling devices for at least one aerodrome for a predefined geographical area.

Description

AUTO-CONFIGURATION OF AT LEAST ONE AIRPORT SIGNALING DEVICETechnical field

[0001] The present invention is related to a global auto-configuration of at least one airport signaling device of an aerodrome.Background art

[0002] Today, the initial airport light setup requires intensive manual intervention to ensure that location information and asset information are effectively managed, and that subsequent updates are uploaded correctly. Current airfield asset management systems rely on manual assignment of a location to an individual asset, and subsequent manual entry of changes. GPS-based asset tracking is widely available in the industry but not specifically for airfield devices and is an efficient means to reduce the workload of asset management. Therefore, there is a need for automating the setup of asset tracking database for devices on the airfield. As background patent literature, WO2023285644, which discloses a positioning system with positioning sensors located in airfield ground light fixtures, is cited.Summary

[0003] According to a first aspect of the present disclosure, there is therefore provided a system for global auto-configuration of at least one airport signaling device of an aerodrome, particularly at least one aeronautical ground light, said system comprising: a central control unit; each airport signaling device including: a local control unit, wherein the local control unit of the at least one airport signaling device is configured to store or receive an identity code of the at least one signalling device; a communication module; a positioning module, particularly a satellite-based positioning module; wherein the positioning module of the at least one airport signaling device is configured to determine an estimated location of the at least one airport signaling device; wherein the central control unit is capable of communicating with the at least one airport signaling device via the communication module of the at least one airport signaling device, preferably once a communication channel has been initiated.

[0004] According to specific embodiments of the present invention, the system for global auto-configuration comprises one or more of the following features:• the system or the communication module of the at least one airport signaling device is configured to communicate configuration data to an Internet of Things (loT) hub,said configuration data comprising the identity code and the estimated location of the at least one signaling device;• the Internet of Things (loT) hub is capable of data communication with and / or to store an IP address of at least one server, in particular a plurality of servers, each server being configured to store inventory data related to a set of registered airport aeronautical signaling devices for at least one aerodrome for a predefined geographical area; said inventory data comprising, for each of the registered airport aeronautical signaling devices: an reference identity code and optionally an reference identity code of the central control unit to which said device is connected or supposedly connected in operation;• the Internet of Things (loT) hub is configured to establish a data transfer connection between either said hub or the at least one airport signaling device and the one of the at least one server, that is dedicated to store the inventory data related to the predefined geographical area in which the at least one airport signaling device is positioned, based on the estimated location of the at least one signaling device received with the configuration data; wherein the system, the central control unit or the local control unit of the at least one airport signalling device is configured to confirm that the at least one airport signaling device is correctly allocated to its target location in the aerodrome,- through polling and / or receiving a confirmation from at least one of the Internet of Things (loT) hub and / or the one of the at least one server and / or- through processing at least some of the inventory data related to the predefined geographical area in which the at least one airport signaling device is positioned, as received from at least one of the Internet of Things (loT) hub and / or the one of the at least one server, wherein a correct allocation of the at least one airport signaling device is confirmed when the identity code of the at least one airport signaling device received via the Internet of Things (loT) hub matches one of the reference identity code of the registered airport aeronautical signaling devices, stored in the inventory data of the one of the at least one server dedicated for the predefined geographical area.• the system or the local control unit of the at least one airport signalling device is configured to- determine through processing the at least some of the inventory data related to the predefined geographical area in which the at least one airport signaling device is positioned, as received from at least one of the Internet of Things (loT) hub and / or the one of the at least one server and / or- poll and / or receive from at least one of the Internet of Things (loT) hub and / or the one of the at least one server, the reference identity code of the central control unit that is associated with the at least one airport signaling device to initiate data communication between the at least one signaling device and the central control unit, wherein the reference identity code of the central control unit used for the data communication initiation is the one that is linked to one of the reference identity code of the registered airport aeronautical signaling devices, stored in the inventory data of the one of the at least one server dedicated for the predefined geographical area, that matches the identity code of the at least one airport signaling device received via the Internet of Things (loT) hub;• the identity code of the at least one signaling device comprises or consists of at least one of a airport signaling device serial number and / or a network card ID;• the central control unit, the one of the at least one server or a working server of the system is configured to receive or store an exact location of the at least one airport signaling device, the exact location corresponds to reference coordinates where the at least one airport signaling device is supposed to be positioned;• the central control unit, the one of the at least one server or the working server of the system is configured to allocate the exact location of a given one of the at least one airport signaling device by selecting one of registered airport aeronautical signaling devices (preferably as stored in the inventory data of the one of the at least one server dedicated for the predefined geographical area), whose exact location is the closest to the estimated location of said given airport signaling device and then assigning the exact location of the one of the registered airport aeronautical signaling devices to the given one of the at least one airport signaling device;• the central control unit, the one of the at least one server or the working server of the system is configured to allocate the exact location of the given one of the at least one airport signaling device, when one of the registered airport aeronautical signaling devices (preferably as stored in the inventory data of the one of the at least one server dedicated for the predefined geographical area) is located in a predefined range, in particular a circle range, centered around the estimated location of said given airport signaling device, by assigning the exact location of the one of the registered airport aeronautical signaling devices to the given one of the at least one airport signaling device;• the central control unit, the at least one server or the working server of the system is configured allocate the exact location of the given one of the at least one airport signaling device, when at least two of the registered airport aeronautical signaling devices (preferably as stored in the inventory data of the one of the at least one server dedicated for the predefined geographical area) are located in a predefined range, in particular a circle range, centered around the estimated location of said given airport signaling device, by selecting one of the at least two of the registered airport aeronautical signaling devices, that has the same functional characteristic as that of the given one of the at least one airport signaling device and then assigning the exact location of the one of the at least two of the registered airport aeronautical signaling devices to the given one of the at least one airport signaling device;• the same functional characteristic is selected from the group comprising the same structural type, the same cluster and / or the same operational type;• the central control unit comprises an user interface adapted to display on a map at least some of the at least one airport signaling device at the exact location thereof and / or at least some of the at least one airport signaling device at the estimated location thereof;• the communication module of the at least one airport signaling device is configured to ensure wirelessly data communication with at least one of the Internet of Things (loT) hub, the at least one server and / or the central control unit;• the communication module of the at least one airport signaling device is configured to ensure data communication with at least one of Internet of Things (loT) hub, the at least one server and / or the central control unit, via a power line connecting the at least one airport signaling device to a wireless communication relay configured to ensure wirelessly data communication with at least one of Internet of Things (loT) hub, the at least one server and / or the central control unit;• the at least one airport signaling device comprises one or more light signaling devices selected from the group comprising a runway light, a taxiway light, an elevated light, an approach light and / or a visual docking guidance system;• the at least one airport signaling device comprises one or more sign signaling device selected from the group comprising a mandatory sign and / or an information sign.

[0005] Such a global automation system allows to instantly populate asset management database with the data of the airfield signaling device.

[0006] Advantageously, real time and always accurate information is exchanged enhancing the overall safety.

[0007] Furthermore a full product life cycle tracking can be performed allowing a reduce amount of light discards. For instance, an inset light can be installed , ideally in a landing area for a short duration and then for a longer duration in another location such as an apron where the stresses exerted on the inset light are much lower. Thanks to measure of the invention, an effective lifetime prediction can be automatically performed.

[0008] The system according to the invention allows an asset management realized without manual intervention, which is especially advantageous on an aerodrome where the access to the moving area is strictly monitored.Brief description of the drawings

[0009] Aspects of the invention will now be described in more detail with reference to the appended drawings, wherein same reference numerals illustrate same features and wherein:

[0010] Figure 1 represents a diagram of an AGL system.

[0011] Figure 2 represents a diagram of an AGL light.

[0012] Figure 3 represents a flow chart illustrating steps of an autoconfiguration.

[0013] Figure 4 represents an AGL light association based on positions.Detailed description

[0014] Referring to Fig. 1 , a plurality of airport signaling devices 11 , in particular aeronautical ground lights (a.k.a. AGL lights) powered by a power supply 12 are provided . The AGL lights 11 are connected in series in a serial circuit 13 which forms a current loop that includes the power supply 12. The power supply 12 is hence connected to the serial circuit 13 to supply the AGL lights 11 with electric power.

[0015] Referring to Fig. 2, the AGL lights 11 comprises a light fixture 111 which is advantageously connected to the serial circuit 13 via an isolating transformer 112, as known in the art. Each light fixture 111 can be connected to the circuit 13 through an associated isolating transformer 112. Alternatively, multiple light fixtures may be connected to a single isolating transformer to receive power from the circuit 13. The light fixture 111 can be any type of airfield ground lighting, such as an inset light, an elevated light or a light sign. The AGL lights 11 can additionally be installed at any suitable location on the airfield, such as a runway, a taxiway, or the apron.

[0016] The light fixture 111 can comprise a housing 117 accommodating a light source 114, such as a LED light source, a positioning module 119 and possibly one or more sensors 115 configured to measure attributes of the light source 114, such as (light) intensity, current and the like, and / or to measure attributes of the environment, such as vibration intensity, temperature, humidity. In addition or alternatively, the one or more sensors 115 can be configured to detect (an attribute of) a foreign object in proximity of the light fixture 111 , such as presence or absence, position and / or distance, speed, etc. The positioning module 119 preferably comprises a satellite-based positioning module configured to determine an estimated location of the AGL light. Alternatively, the positioning module can have a time-of-fly sensor. The fixture 111 further comprises a communication module 118. The communication module 118 can be integrated in the light fixture 111. Typically, the communication module 118 can have at leas one of a wireless transmitter, wireless receiver, or wireless transceiver. The communication module 18 can also exchange operation data with the central control unit 14 through a data communication cable, such as an optical fibre or wirelessly, e.g. cellular communication technology (such as 5G) or Ultra-Wide Band (UWB).

[0017] The light fixture 111 can comprise a local control unit 113 configured to operate the light source 114, the positioning module 119 and the communication module 118 and possibly the one or more sensors 115 and / or heating kit 116. To this end, the local control unit 113 can be connected to a secondary winding of the isolating transformer 112 to receive power which can be converted through suitable converter circuitry (e.g., included in local control unit 113) and supplied to the light source 114 and the positioning module 119 and the communication module 118 and possibly one or more sensors 115 and / or heating kit 116. Local control unit 113 can be configured to receive operating commands or transmit operation data for operating the various components such as, the light source 114, the positioning module 119, the communication module 118, the sensors 115 and / or the heating kit 116. Typically, the operation data comprises configuration data such as the airport signaling device serial number and / or a network card ID and measurement data generated by the one or more sensors 115. Such operating commands may be individual for each light 11 or for a group of lights. Operating commands or operation data can be received or transmitted, respectively, via the serial circuit 13 as known in the art, e.g. operating commands and / or operation data are communicated via a message signal via serial circuit 13 as illustrated in Fig. 1 , where the communication module 118 via the power line. In particular, message signals are superimposed on the AC (50 Hz or 60 Hz) voltage or current signal fed via the serial circuit 13. In some examples, the message signal can be superimposed as anorthogonal frequency division multiplexing (OFDM) signal, which can comprise one or more non-overlapping narrowband and possibly parameterized frequency channels, advantageously in a frequency range between 20 and 190 kHz. Alternatively, the message signal can be superimposed by time slot synchronization and using a controlled high impedance at the secondary side of the transformers 112 for communicating pulses contained in pulse signals, as described in WO 95 / 24820. It will be appreciated that yet alternative power line communication techniques as known in the art may be used in the systems described herein, in particular frequency modulation schemes for data communication, such as frequency-shift keying (FSK) signals transmitted via the serial circuit 13, i.e. , the power supply line. In addition or alternatively, the operating commands or operation data can be received or transmitted, respectively, by the local control unit 113 wirelessly, e.g. via the wireless transmitter, receiver or transceiver integrated in the AGL light.

[0018] Referring again to Fig. 1 , the operating commands or operating data for the local control units of the various AGL lights 11 can be superimposed on the power signal by the power supply 12. Power supply 12 can be connected to a central control unit 14 via a data communication line 142 which can be wired or wireless. Central control unit 14 can be configured to generate operating commands for or monitor operating data from the light fixtures, e.g. for the local control units 113 of the light fixtures and / or to generate operating commands for the power supply 12. The central control unit 14 can be configured to receive external control commands, e.g. from a control tower 9, via one or more data communication lines 141 , and to generate the operating commands for the power supply 12 and / or the AGL lights 11 based on the external control commands.

[0019] Fig.1 illustrates that an AGL light device is configured to exchange operating data, in particular configuration data 143 to an Internet of Things hub 210 or a server / datacenter 220 via a wireless communication. Complementary or alternatively, the configuration data 144 can be communicated to the Internet of Things hub 210 and / or the server / datacenter 220 via the central control unit 14.

[0020] In a preferred embodiment, the global auto configuration system according to the invention enables that an AGL light 11 will, when powered on, communicate its location (GPS coordinate measurements) and unique identity via a cloud-based platform 200. GPS corresponds to the well known Global Positioning System. Another or other satellite based positioning system(s), in particular one or more of the Global Navigation Satellite Systems (GNSS), such as Galileo can used, as an alternative to the GPS or complementary to the GPS. By communicating its location and unique identity the AGL light 11 will trigger the initiation of a global auto configurationprocess that will couple the AGL light 11 to the correct region / country and the right airport / area of the airport (e.g. Runway) and the target customer. The server / datacenter 220 can couple the AGL light 11 to a specific customer as the server / datacenter 220 has access to the AGL light manufacturer production orders that include the link between unique product identity and the customer identity. The server / datacenter 220 can then check if the AGL light 11 is included in a customer subscription and hence has access to additional services such as providing continuous updates (as required) over the full product lifecycle, to monitor status, track changes or relocation. The services allows to provide targeted updates and management of feature release to the AGL light 11 selected individually or within a defined group.

[0021] In addition, when receiving the location and unique identity from the device, the system can automatically populate the information into its database to provide an interactive customer user interface, provide an automated proposal for logical grouping of lights, based on device type, provide an automated proposal for maintenance tasks and scheduling, based on device type and location (e.g. climatic condition).The system according to the invention allows consumer feature management and firmware update either to an individual device or by defined group.

[0022] Although a global server could be used for this invention, in practice and due to reaction time the system advantageously has several levels. In particular, the global level determines what regional or national server the device belongs to and forwards this information back to the AGL light 11. The AGL light then connects to the regional I national server 220 (e.g. geographical area 1 : ’’Asia”, geographical area 2 : “West- Europe”, geographical area 3 : ’’North-America”). The regional or national server 220 level then executes the actual coupling and communication with the AGL light 11 .

[0023] Advantageously, the use of a plurality of servers selected via an internet IOT Hub implies a redundancy check, as the configuration data are normally sent to the right server depending on the GPS locations transmitted with the configuration data.

[0024] The system according to the present invention ensures an automatic configuration of a new AGL light 11. For this purpose, the central control unit 14 is configured to confirm the new AGL light that has been properly configured. For this purpose, the central control unit 14 determine whether the new light AGL light is correctly allocated to its target location in the aerodrome. This confirmation can be performed through polling a confirmation from the cloud 200, typically from a server 220 that is dedicated.

[0025] Figure 3 depicts a flowchart describing the steps of an autoconfiguration according to the invention.In S1 , a AGL light is power up and has a unique SIM, EMI or ID, or a combination thereof. Preferably, global SIM cards are used.In S2, the AGL light presents itself into a “Global” IOT Hub (e.g. “West Europe”). The system according to the present invention is pre-programmed, in such a manner that when the AGL light 11 initiates communication to the global IOT hub 210, it communicates its unique ID (light serial number or network card ID) and localization data (GPS).In S3, the IOT hub decides which data center 220 should be used based on the GPS coordinates indicate the estimated position of the AGL light. The global IOT hub 210 uses the GPS data to determine what local data center hub 220 this light needs to connect to and then communicates back to the AGL light 11 the regional data centre hub 220 and optionally a token.In S4, the light AGL then provides its unique ID and localization data (e.g. GPS coordinates), and optionally a token to the regional data center 220. The regional data centre 220 can then define further in detail where exactly the AGL light 11 is positioned (airport I runway, taxiway center line, edge). The regional data center 220 checks whether this light AGL (unique ID) is included in a customer subscription. Typically, a customer must announce the products / lights that she / he wants to include in her / his service subscription. When, the AGL light 11 communicates, this is checked in the regional database for a match. As such, it is assured that the AGL light 11 has been announced for the service and its actual customer is identified. This precaution is important as there may be more than one customer active on the same geographical area.If the check is positive, then the regional data center 220 includes the presence of this light in the database & communicates back to the light the info of the service platform ID (so a specific customer ID).In S5, the exact position of the AGL light 11 on the airport is determined. With the unique ID code of the light, the system can look up the production order and then also the exact product material code (codification). The system then suggests what the exact position on a map is and verifies this suggested position is possible. For this purpose, an algorithm selects the most plausible position from one or more suggested exact positions EXA_POS that positioned in within a region R whose centre are calculated based on the GPS measurements EST_POS that are not precise enough for an accurate matching. The selection can be based on distance but can also be more complex e.g., if the systemfinds two positions EXA_POS but for different applications, it could select the proper location EXA_POS based on the product code that includes data related to the application and function (e.g. Type A, B, C), as illustrated in Figure 4.

Claims

CLAIMS1. A system for global auto-configuration of at least one airport signaling device (11) of an aerodrome, particularly at least one aeronautical ground light, said system comprising:• a central control unit (14);• each airport signaling device (11) including:• a local control unit (113), wherein the local control unit of the at least one airport signaling device (11) is configured to store or receive an identity code of the at least one signalling device (11);• a communication module (118) ;• a positioning module (119), particularly a satellite-based positioning module; wherein the positioning module (119) of the at least one airport signaling device (11) is configured to determine an estimated location (EST_POS) of the at least one airport signaling device (11); wherein the central control unit (14) is capable of communicating with the at least one airport signaling device (11) via the communication module (119) of the at least one airport signaling device (11) once a communication channel has been initiated; wherein the system or the communication module (119) of the at least one airport signaling device (11) is configured to communicate configuration data to an Internet of Things (loT) hub (210), said configuration data comprising the identity code and the estimated location (EST_POS) of the at least one signaling device (11); wherein the Internet of Things (loT) hub is capable of data communication with and / or to store an IP address of a plurality of servers (220), each server being configured to store inventory data related to a set of registered airport aeronautical signaling devices for at least one aerodrome for a predefined geographical area; said inventory data comprising, for each of the registered airport aeronautical signaling devices: an reference identity code and optionally an reference identity code of the central control unit (14) to which said device is connected or supposedly connected in operation; wherein the Internet of Things (loT) hub (210) is configured to establish a data transfer connection between either said hub (210) or the at least one airport signaling device (11) and one of the plurality of servers (220), that is dedicated tostore the inventory data related to the predefined geographical area in which the at least one airport signaling device (11) is positioned, based on the estimated location (EST_POS) of the at least one signaling device (11) received with the configuration data; wherein the system, the central control unit (14) or the local control unit (113) of the at least one airport signalling device (11) is configured to confirm that the at least one airport signaling device (11) is correctly allocated to its target location in the aerodrome,- through polling and / or receiving a confirmation from at least one of the Internet of Things (loT) hub (210) and / or the one of the plurality of servers (220) and / or- through processing at least some of the inventory data related to the predefined geographical area in which the at least one airport signaling device (11) is positioned, as received from at least one of the Internet of Things (loT) hub (210) and / or the one of the plurality of servers (220), wherein a correct allocation of the at least one airport signaling device (11) is confirmed when the identity code of the at least one airport signaling device (11) received via the Internet of Things (loT) hub matches one of the reference identity code of the registered airport aeronautical signaling devices, stored in the inventory data of the one of the plurality of servers (220) dedicated for the predefined geographical area.

2. The system according to Claim 1 , wherein the system or the local control unit of the at least one airport signalling device (11) is configured to- determine through processing the at least some of the inventory data related to the predefined geographical area in which the at least one airport signaling device (11) is positioned, as received from at least one of the Internet of Things (loT) hub and / or the one of the plurality of servers (220) and / or- poll and / or receive from at least one of the Internet of Things (loT) hub and / or the one of the plurality of servers (220), the reference identity code of the central control unit (14) that is associated with the at least one airport signaling device (11) to initiate data communication between the at least one signaling device (11) and the central control unit (14), wherein the reference identity code of the central control unit (14) used for the data communication initiation is the one that is linked to one of the reference identity code of the registered airport aeronautical signaling devices, stored in the inventory data of the one of the plurality of servers (220) dedicated for the predefined geographicalarea, that matches the identity code of the at least one airport signaling device (11) received via the Internet of Things (loT) hub.

3. The system according to any of the preceding claims, wherein the identity code of the at least one signaling device (11) comprises or consists of at least one of a airport signaling device (11) serial number and / or a network card ID.

4. The system according to any of the preceding claims, wherein the central control unit (14), the one of the plurality of servers (220) or a working server of the system is configured to receive or store an exact location (EXA_POS) of the at least one airport signaling device (11), the exact location (EXA_POS) corresponds to reference coordinates where the at least one airport signaling device (11) is supposed to be positioned.

5. The system according to any of the preceding claims, wherein the central control unit (14), the one of the plurality of servers (220) or the working server of the system is configured to allocate the exact location (EXA_POS) of a given one of the at least one airport signaling device (11) by selecting one of registered airport aeronautical signaling devices, preferably as stored in the inventory data of the one of the plurality of servers (220) dedicated for the predefined geographical area, whose exact location (EXA_POS) is the closest to the estimated location (EST_POS) of said given airport signaling device (11) and then assigning the exact location (EXA_POS) of the one of the registered airport aeronautical signaling devices to the given one of the at least one airport signaling device (11).

6. The system according to any of the preceding claims, wherein the central control unit (14), the one of the plurality of servers (220) or the working server of the system is configured to allocate the exact location (EXA_POS) of the given one of the at least one airport signaling device (11), when one of the registered airport aeronautical signaling devices, preferably as stored in the inventory data of the one of the plurality of servers (220) dedicated for the predefined geographical area, is located in a predefined (R) range, in particular a circle range, centered around the estimated location (EST_POS) of said given airport signaling device (11), by assigning the exact location (EXA_POS) of the one of the registered airport aeronautical signaling devices to the given one of the at least one airport signaling device (11).

7. The system according to any of the preceding claims, wherein the central control unit (14), the plurality of servers (220) or the working server of the system is(are) configured allocate the exact location (EXA_POS) of the given oneof the at least one airport signaling device (11), when at least two of the registered airport aeronautical signaling devices, preferably as stored in the inventory data of the one of the plurality of servers (220) dedicated for the predefined geographical area, are located in a predefined range (R), in particular a circle range, centered around the estimated location (EST_POS) of said given airport signaling device, by selecting one of the at least two of the registered airport aeronautical signaling devices, that has the same functional characteristic as that of the given one of the at least one airport signaling device (11) and then assigning the exact location (EXA_POS) of the one of the at least two of the registered airport aeronautical signaling devices to the given one of the at least one airport signaling device (11).

8. The system according to the preceding claim, wherein the same functional characteristic is selected from the group comprising the same structural type, the same cluster and / or the same operational type.

9. The system according to any of the preceding claims, wherein the central control unit (14) comprises an user interface adapted to display on a map at least some of the at least one airport signaling device (11) at the exact location (EXA_POS) thereof and / or at least some of the at least one airport signaling device (11) at the estimated location (EXA_POS) thereof.

10. The system according to any of the preceding claims, wherein the communication module of the at least one airport signaling device (11) is configured to ensure wirelessly data communication with at least one of the Internet of Things (loT) hub, the plurality of servers (220) and / or the central control unit (14).

11. The system according to any of the preceding claims, wherein the communication module of the at least one airport signaling device (11) is configured to ensure data communication with at least one of Internet of Things (loT) hub, the plurality of servers (220) and / or the central control unit (14), via a power line connecting the at least one airport signaling device (11) to a wireless communication relay configured to ensure wirelessly data communication with at least one of Internet of Things (loT) hub, the plurality of servers (220) and / or the central control unit (14).

12. The system according to any of the preceding claims, wherein the at least one airport signaling device (11) comprises one or more light signaling devices selected from the group comprising a runway light, a taxiway light, an elevated light, an approach light and / or a visual docking guidance system.

13. The system according to any of the preceding claims, wherein the at least one airport signaling device (11) comprises one or more sign signaling device selected from the group comprising a mandatory sign and / or an information sign.

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