DE102019211641A1 - Route facility and method for operating a route facility - Google Patents

Abstract

The invention relates to a method for operating a line facility (RBC1) using a mobile radio network (MNET), which is assigned to a system section (SA1) of a line system, in particular a system section (SA1) of a railway track system (EGA), and which is assigned to vehicles (LOK) can communicate via the cellular network (MNET). According to the invention it is provided that after receiving a mobile phone call from a vehicle (LOK) it is checked from which radio cell (FZ0-FZ9) of the mobile radio network (MNET) the call originates, and then it is checked whether the radio cell (FZ0-FZ9) of the route facility (RBC1 ) is assigned or not and in the event that the radio cell (FZ0-FZ9) is not assigned to the link facility (RBC1), at least one other link facility (RBC2 / RBC3) is determined that is allocated to the radio cell (FZ0-FZ9) to which Vehicle (LOK) the mobile number of this at least one other route facility (RBC2 / RBC3) is communicated and then the communication connection is terminated.

Description

The invention relates to a method for operating a route facility using a mobile radio network, which is assigned to a system section, in particular a system section of a railway track system, and can communicate with vehicles, in particular rail vehicles, via the mobile radio network.

As is known, railroad tracks can be operated on the basis of the ETCS standard. In the ETCS standard, track facilities in the form of radio block centers use the GSM-R network to communicate with and control rail vehicles that run on the railway track system.

The invention is based on the object of specifying a method for operating route facilities in which unnecessary communication connections are kept as short as possible.

According to the invention, this object is achieved by a method having the features according to patent claim 1. Advantageous embodiments of the method according to the invention are specified in the subclaims.

According to this, the invention provides that after receiving a cell phone call from a vehicle, it is checked from which cell of the cell phone network the call originates, then a check is made as to whether the cell is assigned to the link facility or not and in the event that the radio cell is not assigned to the link facility, at least one other link facility is determined which is assigned to the radio cell, the vehicle is informed of the mobile radio number of this at least one other link facility and the communication connection is then terminated.

A major advantage of the method according to the invention is that vehicles that set up a communication link with non-responsible route facilities are informed of this fact very quickly and are also informed of the responsible or possibly responsible route facility and their mobile phone number. Communication connections that are not targeted can thus be terminated quickly, so that, as a result, both the communication network and the incorrectly called route facility are advantageously relieved of unnecessary communication.

It is advantageous if the link facility terminates the communication link itself. Alternatively, it can also advantageously be provided that the route facility requests the vehicle to terminate the communication connection.

In a preferred embodiment of the method it is provided that in the event that the radio cell is assigned to the link facility, the communication link remains and the crossing of a balise facility is awaited after receipt of a message from the vehicle transmitted via the communication link about the crossing of the balise facility the balise identifier transmitted in the message is checked to determine whether the balise device is located in the system section of the line facility and, in the event that the balise device is not located in the system section of the line facility, the responsible line facility is determined, i.e. the line facility which the balise facility containing system section managed, the vehicle is informed of the mobile number of this responsible route facility and then the communication connection is terminated, and otherwise the comm communication connection is continued.

The cellular network is preferably the GSM-R network. The connection between a network switching device of the mobile radio network, from which the radio cell can be queried, is preferably line-switched (in technical terms "circuit-switched") or packet-based (in technical language "packet-switched").

The link facility is preferably an ETCS-compatible link facility, in particular an ETCS-compatible radio block center.

The system section is preferably a railway track system section and the vehicle is a rail vehicle.

The railway track section is preferably operated according to the ETCS standard, in particular according to level 2 or level 3.

The invention also relates to a route facility that can use a mobile radio network and can be assigned to a system section, in particular a system section of a railway track system, and can communicate with vehicles via the mobile radio network.

According to the invention, it is provided that the route device is designed to query a network switching device of the mobile network from which radio cell of the cellular network the call originates after receiving a mobile radio call from a vehicle, and then to check whether the radio cell is assigned to the route device or not, and in the event that the radio cell is not assigned to the link facility, to determine at least one other link facility that is allocated to the radio cell and to inform the vehicle of the mobile phone number of this at least one other link facility.

With regard to the advantages of the route device according to the invention and with regard to advantageous configurations of the route device according to the invention, reference is made to the above statements in connection with the method according to the invention and its advantageous configurations.

The link facility is preferably designed to request the vehicle to terminate the communication connection or to terminate the communication link itself after the cell phone number of the at least one other link facility has been transmitted.

The link facility preferably has a database interface for connection to an external database in which it is stored which radio cells are assigned to which link facilities.

Alternatively or in addition, it can advantageously be provided that the link facility has an internal database in which it is stored which radio cells are assigned to which link facilities.

The link facility is preferably designed so that, in the event that the radio cell identified by the network switching facility is assigned to the link facility, it continues to operate the communication link and waits for the crossing of a balise facility after receipt of a message about the crossing of the vehicle transmitted via the communication link Balise device checks the balise identifier transmitted in the message to determine whether the balise device is arranged in the system section of the route installation and, in the event that the balise installation is not arranged in the installation section of the route installation, determines the relevant route installation assigned to the balise installation, the vehicle notifies the mobile phone number of this responsible route facility and then terminates the communication connection itself or lets the vehicle terminate it, and otherwise the communication connection ung continues.

The route device preferably has a computing device and a memory in which a control program is stored which, when executed by the computing device, causes the computing device to carry out a method as described above.

The invention also relates to a route system which has a plurality of system sections, each of which is assigned a route facility as described above.

• 1-6 eine Eisenbahngleisanlage mit unterschiedlichen Positionen eines Schienenfahrzeugs auf der Eisenbahngleisanlage, wobei anhand der Eisenbahngleisanlage gemäß den 1 bis 6 Ausführungsbeispiele für das erfindungsgemäße Verfahren sowie Ausführungsbeispiele für erfindungsgemäße Streckeneinrichtungen erläutert werden,
• 7 ein Flussdiagramm zur Erläuterung der Arbeitsweise der Streckeneinrichtungen der Eisenbahngleisanlage gemäß den 1 bis 6,
• 8 ein Ausführungsbeispiel für eine Streckeneinrichtung, die bei der Eisenbahngleisanlage gemäß den 1 bis 6 eingesetzt werden kann, und
• 9 ein weiteres Ausführungsbeispiel für eine Streckeneinrichtung, die für den Einsatz bei der Eisenbahngleisanlage gemäß den 1 bis 6 geeignet ist.

The invention is explained in more detail below on the basis of exemplary embodiments; show by way of example

• 1-6 a railroad track system with different positions of a rail vehicle on the railroad track system, based on the railway track system according to the 1 to 6 Exemplary embodiments for the method according to the invention and exemplary embodiments for route equipment according to the invention are explained,
• 7th a flow chart to explain the operation of the track facilities of the railway track system according to the 1 to 6 ,
• 8th an embodiment of a track facility that is used in the railroad track system according to 1 to 6 can be used, and
• 9 a further embodiment of a track facility that is suitable for use in the railway track system according to the 1 to 6 suitable is.

For the sake of clarity, the same reference symbols are always used in the figures for identical or comparable components.

The 1 shows an embodiment for a railroad track system EGA , at the plant sections or route sections SA1 , SA2 and SA3 be controlled by assigned track facilities RBC1, RBC2 and RBC3. The track facilities are preferably ETCS track facilities, in particular so-called radio block centers.

In the area of the railway track system EGA becomes a cellular network MNET operated and managed or controlled by a network switching center MSC.

The cellular network MNET enables cellular connections between the route facilities RBC1, RBC2 and RBC3 and those in the route sections SA1 , SA2 and SA3 existing or moving rail vehicles. In the context of the mobile radio connections, information on the vehicle (e.g. balise identifiers of overrun balise devices as vehicle-side location information) and / or track-side control commands (e.g. route releases or entry or further travel bans) for monitoring rail traffic in the respective route sections SA1 , SA2 and SA3 be transmitted.

A corresponding mobile radio-based train control system is known as the "European Train Control System" (ETCS) and - apart from the modifications described below - can be used as the basic system for operating the railway track system EGA according to the 1 to 6 to serve. With regard to the European train control system ETCS, reference is made to the relevant literature and the explanations in the Wikipedia entry "European train control system".

The 1 shows an example of ten radio cells in the cellular network MNET , which are identified with the reference symbols FZ0 to FZ9. The management and operation of the ten radio cells FZ0 to FZ9 is carried out by the network switching center MSC.

The mode of operation of the route devices RBC1 to RBC3 is explained in more detail below using the route device RBC1 as an example; these explanations can apply accordingly to the mode of operation of the other two route facilities RBC2 and RBC3.

In the following, it is assumed by way of example that a rail vehicle LOK in the area of the first route section SA1 was taken out of service and - for example as part of a towing operation - in the second route section SA2 , in which there is a workshop, for example, has been transferred. If the rail vehicle LOK is then restarted, for example after a repair, the rail vehicle LOK or its vehicle control device is not yet aware that the rail vehicle LOK is now in the second route section SA2 and no longer in the first section SA1 in which it was previously taken out of service.

The rail vehicle LOK or its vehicle control device will accordingly first dial the mobile radio number of the first route device RBC1 when attempting to set up a mobile radio connection with the responsible route facility, since the rail vehicle is in the first route section SA1 has been taken out of service.

If the mobile radio call is received by the first route facility RBC1 and the communication connection is established between the first route facility RBC1 and the rail vehicle LOK, the first route facility RBC1 will first send an inquiry A (see FIG 1 ) to the network switching center MSC and ask from which radio cell the mobile radio call of the rail vehicle LOK originates. The network switching center MSC will receive a response R (see 2 ) with a radio cell specification of radio cell FZ8, since the second route section SA2 in the example according to 1 is exclusively within the radio cell FZ8.

The connecting line L between the network switching facility MSC of the route facility RBC1 is preferably line-switched (in technical terms “circuit-switched”) and / or operated in a packet-based manner (technical language “packet-switched”).

After receiving the feedback R and the radio cell information from the radio cell FZ8, the first link facility RBC1 will be an internal database DBi and / or an external database DBe (cf. 8th and 9 ) and determine whether the first route section SA1 is in the area of the radio cell FZ8.

In the embodiment according to 1 and 2 it can be seen that the radio cell FZ8 is outside the first route section SA1 lies, from which the first route facility RBC1 can conclude that the rail vehicle LOK is outside its own route section SA1 is located.

The first route facility RBC1 will then inquire from the internal or external database DBi or DBe which other route facilities use the radio cell FZ8 and thus possibly be responsible for the rail vehicle LOK.

In the embodiment according to 1 and 2 only the second route section is located in radio cell FZ8 SA2 operated by the second route facility RBC2. The first route facility RBC1 will now determine the mobile radio number of the second route facility RBC2 by querying the internal or external database DBi or DBe and transmit this to the rail vehicle LOK within the framework of the existing communication link.

The first route facility RBC1 will then either itself terminate the communication link with the rail vehicle LOK or alternatively request the rail vehicle LOK to terminate the communication link. The rail vehicle LOK then has the option of calling the responsible second route facility RBC2 knowing the mobile phone number and establishing a communication link with the second route facility RBC2 produce so that the further control of the rail vehicle LOK in the second route section SA2 can be taken over by the second route facility RBC2, preferably according to the ETCS standard.

The 3 shows a different position of the rail vehicle LOK when it is restarted after the rail vehicle LOK in the first route section SA1 was decommissioned. It can be seen that the rail vehicle LOK in the representation according to 3 in the third section SA3 and the mobile phone call of the rail vehicle LOK must be made by the radio cell FZ3.

The first line facility SA1 After receiving the mobile radio call from the rail vehicle LOK, a request A will be sent to the network switching device MSC and, as part of the response R, it will learn that the mobile radio call has been made from the radio cell FZ3. Since the radio cell FZ3 is in the area of the first route section SA1 extends, it is quite conceivable that the rail vehicle LOK is in the area of the first route section SA1 could be located. It is also possible that the rail vehicle LOK in the area of the third route section SA3 is operated, as the radio cell FZ3 also covers the area of the third route section SA3 detected.

The first line facility SA1 For this reason, the existing communication connection with the rail vehicle LOK will initially continue and it will be assumed that the rail vehicle LOK is in the area of the first route section SA1 is located. The communication link is maintained until the rail vehicle LOK one of the balise devices in the railroad track system EGA are installed, run over.

If the rail vehicle LOK drives over, for example, the balise device BL9 (see FIG 4th ) leading to the third section of the route SA3 belongs, and the rail vehicle LOK transmits the balise identifier of the balise device BL9 to the first route device RBC1, then the first route device RBC1 will query from the internal database DBi or the external database DBe whether the balise device BL9 to the first route section SA1 or to your own route section SA1 heard or not.

This query will show that the balise device BL9 is not going to the first route section SA1 belongs and the rail vehicle LOK is therefore outside the first route section SA1 is located. At the same time, the database query shows that the rail vehicle LOK is in the area of the third route section SA3 , i.e. in the area of responsibility of the third route facility RBC3.

The first route facility RBC1 will accordingly request the mobile radio number of the third route facility RBC3 from the database DBi or DBe and transmit this to the rail vehicle LOK within the framework of the existing communication connection. It will then request the rail vehicle LOK to terminate the communication link; alternatively, the first route facility RBC1 can also automatically terminate the communication link.

The 5 shows the railway system EGA after the rail vehicle LOK based on the position according to 3 has not passed the balise device BL9 but rather the balise device BL7 and has transmitted the balise identifier of the balise device BL7 to the first route device RBC1. The database query of the first route facility RBC1 with respect to the balise identifier BL7 will result in that the balise facility BL7 is on the first route section SA1 belongs and thus the first route facility RBC1 is responsible for the rail vehicle LOK, because the rail vehicle LOK is actually in the first route section SA1 is located. The communication link between the first link facility SA1 and the rail vehicle LOK is thus retained and the further control of the rail vehicle LOK is carried out by the first route device RBC1, preferably in accordance with the above-mentioned ETCS standard.

The 6 shows the railway track system EGA in the event that the rail vehicle LOK is in the area of the first route section SA1 has been taken out of operation and is being put back into operation again in the area of the radio cell FZ1. After establishing the communication connection with the first route facility RBC1, it will determine after receiving the feedback R from the network switching facility MSC and after querying the internal and / or external database DBi or DBe that the rail vehicle LOC is in the area of the first route section SA1 must be located, because namely the radio cell FZ1 exclusively in the area of the first route section SA1 and thus lies exclusively in the area of responsibility of the first route facility RBC1. The communication connection with the rail vehicle LOK is thus maintained and the further control of the rail vehicle LOK is carried out by the first route device RBC1, preferably in accordance with the above-mentioned ETCS standard.

The mode of operation of the first route facility RBC1 is exemplified in a flowchart in FIG 7th shown in more detail.

After receiving a mobile phone call from a rail vehicle and after setting up the communication connection, as part of a method step 110 the first route facility RBC1 query the radio cell from which the mobile radio call comes from the network switching facility MSC by means of an inquiry A, specifying the call number NUM of the calling rail vehicle.

After receiving the feedback R with the radio cell information FZ from the network switching center MSC (procedural step 120 ) is in one process step 130 by querying an internal database DBi and / or an external database DBe, it is determined which route sections SA or route facilities RBC can be assigned to the reported radio cell information FZ.

• Bezeichnet die zurückgemeldete Funkzellenangabe FZ ausschließlich eine oder mehrere „fremde“ Funkzellen FZf, also solche Funkzellen, die außerhalb des ersten Streckenabschnitts SA1 liegen (siehe 1 und 2), so wird in einem Verfahrensschritt 150 die jeweils zuständige Streckeneinrichtung oder eine beliebige der womöglich zuständigen Streckeneinrichtungen ermittelt. Die Mobilfunknummer der als zuständig ermittelten Streckeneinrichtung wird dem Schienenfahrzeug LOK übermittelt und anschließend wird die Kommunikationsverbindung beendet. Nach einem Kommunikationsaufbau zwischen dem Schienenfahrzeug LOK und der zuständigen Streckeneinrichtung kann eine Zugsteuerung gemäß dem oben erwähnten ETCS-Standard erfolgen.

Then in one process step 140 the feedback result of the procedural step 130 evaluated:

• The reported radio cell information FZ exclusively designates one or more "foreign" radio cells FZf, that is, those radio cells that are outside the first route section SA1 lie (see 1 and 2 ), then in one process step 150 determines the relevant route facility or any of the possibly responsible route facilities. The mobile phone number of the route facility determined as responsible is transmitted to the rail vehicle LOK and the communication link is then terminated. After communication has been established between the rail vehicle LOK and the responsible track facility, train control can take place in accordance with the above-mentioned ETCS standard.

Is it a "dedicated" radio cell FZe, ie one that is in the area of the first route section SA1 is in the process step 140 checked whether the radio cell reported back exclusively from its own or first route section SA1 is used or by at least one other route section.

Results in the process step 140 that another route section and another route facility also use the reported radio cell (see 3 to 5 ), then as part of a procedural step 160 first waited for the rail vehicle to report a balise identification of a balise device.

In the process step 160 after receiving a balise identifier by querying the internal or external database DBi and / or DBe, it is checked whether the balise identifier is an “own” balise device BLe, ie a balise device in the first route section SA1 , or a "foreign" balise device BLf.

The balise identifier denotes a "foreign" balise facility BLf, i.e. one that is outside the first route section SA1 lies (see 4th ), then in one process step 170 the responsible route facility is determined and the mobile phone number of the route facility determined as responsible is transmitted to the rail vehicle LOK; then the communication connection is terminated. After communication has been established between the rail vehicle LOK and the responsible track facility, train control can take place in accordance with the above-mentioned ETCS standard.

Results in the process step 160 that it is a "separate" balise device BLe (see 5 ), the communication link is maintained and the rail vehicle is controlled under the supervision of the route facility RBC1 (process step 180 ), preferably in accordance with the ETCS standard mentioned above.

Also starting from the process step 140 with the process step 180 (Maintaining the communication link and controlling the rail vehicle under the supervision of the route facility RBC1) continued if already in the method step 140 was established (see 6 ) that the radio cell reported back exclusively from its own or first route section SA1 is used and no other route facility than the route facility RBC1 can be responsible.

The 8th shows an embodiment for a route device 200 that at the railway track system EGA as one of the route facilities RBC1-RBC3 according to FIGS 1 to 7th can be used. The route facility 200 comprises a computing device 210 and a memory 220 . In the memory 220 a control program module SPM is stored, which when executed by the computing device 210 Work steps according to the flowchart 7th or according to the 1 to 6 described procedure.

In the memory 220 In addition, an internal database DBi is stored in the balise ID of the railroad track system EGA attached balise devices and the assignment of radio cells to route devices are stored so that the computing device 210 when the control program module SPM is carried out, it can determine which route facility is responsible in each case.

The 9 shows a further embodiment for a route device 300 that at the railway track system EGA as one of the route facilities RBC1-RBC3 according to FIGS 1 to 7th can be used. The route facility 300 comprises a computing device 310 and a memory 320 . In the memory 320 a control program module SPM is stored, which when executed by the computing device 310 Work steps according to the flowchart 7th or according to the 1 to 6 described procedure. The route device has a connection A300 which enables a connection to an external database DBe, in the balise identifiers in the railroad track system EGA attached balise devices and the assignment of radio cells to route devices are stored so that the computing device 310 when the control program module SPM is carried out, it can determine which route facility is responsible in each case.

Although the invention has been illustrated and described in more detail by means of preferred exemplary embodiments, the invention is not restricted by the disclosed examples and other variations can be derived therefrom by the person skilled in the art without departing from the scope of protection of the invention.

Claims (15)

Method for operating a route facility (RBC1) using a mobile radio network (MNET), which is assigned to a system section (SA1) of a route system, in particular a system section (SA1) of a railway track system (EGA), and with vehicles (LOK) via the mobile radio network (MNET) can communicate, characterized in that - after receiving a mobile phone call from a vehicle (LOK) it is checked from which radio cell (FZ0-FZ9) of the mobile network (MNET) the call originates, - it is then checked whether the radio cell (FZ0-FZ9) is or is not assigned to the link facility (RBC1) and - in the event that the radio cell (FZ0-FZ9) is not assigned to the link facility (RBC1), at least one other link facility (RBC2 / RBC3) is determined which is associated with the radio cell (FZ0-FZ9 ) is assigned, the vehicle (LOK) is informed of the mobile number of this at least one other route facility (RBC2 / RBC3) and then the communication link is terminated. Procedure according to Claim 1 , characterized in that the route device (RBC1) terminates the communication link itself. Procedure according to Claim 1 , characterized in that the route facility (RBC1) requests the vehicle (LOK) to terminate the communication link. Method according to one of the preceding claims, characterized in that - in the event that the radio cell (FZ0-FZ9) is assigned to the route facility (RBC1), the communication connection continues and the crossing of a balise facility (BL1-BL13) is awaited, - after receipt of a message from the vehicle (LOK) transmitted via the communication link about the crossing of the balise device (BL1-BL13), the balise identifier transmitted in the message is checked to determine whether the balise device (BL1-BL13) in the system section (SA1) of the route facility (RBC1) and - in the event that the balise facility (BL1-BL13) is not located in the system section (SA1) of the line facility (RBC1), the responsible line facility (RBC2 / RBC3) is determined, i.e. that line facility (RBC2 / RBC3), which manages the system section (SA2 / SA3) containing the balise device (BL1-BL13), the vehicle (LOK) the mobile phone number of this responsible link facility (RBC2 / RBC3) is communicated and then the communication connection is terminated, and - otherwise the communication connection is continued. Method according to one of the preceding claims, characterized in that the mobile radio network (MNET) is the GSM-R network. Method according to one of the preceding claims, characterized in that the route device (RBC1) is an ETCS-compatible route device (RBC1), in particular an ETCS-compatible radio block center according to the ETCS standard. Method according to one of the preceding claims, characterized in that the system section (SA1) is a railway track system section, Procedure according to Claim 7 , characterized in that the railway track section is operated in accordance with the ETCS standard, in particular in accordance with Level 2 or Level 3. Track facility (RBC1), which can use a mobile radio network (MNET) and can be assigned to a system section (SA1), in particular a system section (SA1) of a railway track system (EGA) and can communicate with vehicles (LOK) via the mobile radio network (MNET), characterized in that the route device (RBC1) is designed to - after receipt of a mobile phone call from a vehicle (LOK) to query from a network switching device (MSC) of the mobile network (MNET) from which radio cell (FZ0-FZ9) of the mobile network (MNET) Call originates, - then check whether the radio cell (FZ0-FZ9) is assigned to the link facility (RBC1) or not, and - in the event that the radio cell (FZ0-FZ9) is not assigned to the link facility (RBC1), at least one other route facility (RBC2 / RBC3) assigned to the radio cell (FZ0-FZ9), and the vehicle (LOK) the mobile number of this at least one other route facility (RBC2 / RBC3). Line facility (RBC1) according to Claim 9 , characterized in that the route device (RBC1) is designed to request the vehicle (LOK) to end the communication connection or to end the communication connection itself after the mobile phone number of the at least one other route device (RBC2 / RBC3) has been transmitted. Route device (RBC1) according to one of the preceding Claims 9 to 10 , characterized in that the route facility (RBC1) has a database interface (A300) for connection to an external database (DBe), which stores which radio cells (FZ0-FZ9) are assigned to which route facilities (RBC1, RBC2, RBC3). Route device (RBC1) according to one of the preceding Claims 9 to 11 , characterized in that the link facility (RBC1) has an internal database (DBi) in which is stored which radio cells (FZ0-FZ9) are assigned to which link facilities (RBC1, RBC2, RBC3). Route device (RBC1) according to one of the preceding Claims 9 to 11 , characterized in that the route device (RBC1) is designed so that - in the event that the radio cell (FZ0-FZ9) identified by the network switching device (MSC) is assigned to the route device (RBC1), it continues to operate the communication link and the overrun a balise device (BL1-BL13), - after the receipt of a message transmitted by the vehicle (LOK) via the communication link about the crossing of the balise device (BL1-BL13), the balise identifier transmitted in the message is checked to determine whether the balise device (BL1-BL13 ) is arranged in the system section (SA1) of the line facility (RBC1), and - in the event that the balise facility (BL1-BL13) is not arranged in the system section (SA1) of the line facility (RBC1), the responsible line facility (RBC1) is determined , which is assigned to the balise device (BL1-BL13), the vehicle (LOK) the mobile phone number of this responsible route eneinrichtung (RBC1) and then terminates the communication link itself or lets the vehicle (LOK) terminate it, and - otherwise, continues the communication link. Route device (RBC1) according to one of the preceding Claims 9 to 13 , characterized in that the route device (RBC1) has a computing device (210, 310) and a memory (220, 320) in which a control program module (SPM) is stored which, when executed by the computing device (210, 310), initiates it , a method according to one of the preceding Claims 1 to 6 run, or those in the Claims 7 to 11 to ensure the described mode of operation of the route facility (RBC1). Line system, characterized in that it has a plurality of system sections (SA1-SA3), each of which has a line device (RBC1-RBC3) according to one of the above Claims 9 to 14th assigned.

Images