Method for more rapidly reconfiguring a connection device and connection device
Patent Information
- Application Number
- CN202610296872.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2025-03-28
- Filing Date
- 2026-03-12
- Publication Date
- 2026-09-29
AI Technical Summary
[0006]以上提及的问题中的至少一部分通过一种根据权利要求1的用于更快速地重新配置连接装置的方法和根据权利要求7的连接装置来解决
Smart Images
Figure CN122845386A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a method for more quickly reconfiguring at least one connection device for a network connection between coupled rail vehicles, and to the connection device itself. In particular, embodiments relate to accelerated reconfiguration time following a failure of one of the redundant connection devices used for Ethernet connections between rail vehicles. Background Technology
[0002] Rail vehicles use connection nodes (e.g., specialized connection devices) for Ethernet connectivity. These connection nodes can be configured as so-called Ethernet Train Backbone Nodes (ETBNs) and form specialized Ethernet routers. These connection nodes can be linked between rail vehicles (train units) via a defined protocol, namely TTDP (Train Topology Discovery Protocol, used to discover train topology), where rail vehicles can be coupled together to form a train. For example, the international railway standard (IEC 61375-2-5) describes how two or more rail vehicles can be interconnected via Ethernet, ensuring functional interoperability regarding network-Ethernet connections.
[0003] To ensure high reliability, ETBN connection nodes are redundantly constructed, with one node operating in primary mode (master device) and the other in secondary mode (slave device). When the ETBN master device is disconnected, its functionality is transferred to the ETBN slave device. This is achieved by activating the corresponding bypass line.
[0004] On the corresponding power line, this switching causes an interruption in the connection and is then immediately reconnected. This may result in a connection interruption of 2 to 3 seconds. This is very long. Such a connection could be, for example, an Ethernet gigabit connection, where a significant amount of data is blocked for 2 to 3 seconds. While some non-standard settings can reduce this time to approximately 300 milliseconds, this is still much longer than the time required to activate the software application in the ETBN slave device. This activation typically lasts tens of milliseconds. Summary of the Invention
[0005] Therefore, a possible solution for reconfiguring the connection device more quickly is needed.
[0006] At least some of the problems mentioned above are solved by a method for more rapid reconfiguration of the connection device according to claim 1 and a connection device according to claim 7. Other advantageous embodiments that define the subject matter of the independent claim are further described in the dependent claims.
[0007] This invention relates to a method for more rapidly reconfiguring at least one connection device for network connectivity between coupled rail vehicles along a backbone network. The connection device includes at least a first interface, a second interface, and internal circuitry connected to the first and second interfaces in a basic state. This connection device and other connection devices form a redundant access node for one of the coupled rail vehicles to the backbone network. The method includes:
[0008] Receive fault reports regarding malfunctions involving the connection device;
[0009] Stop the activity of the internal circuitry;
[0010] The notification regarding the fault is sent to the additional connection device so that the additional connection device can take over the activity.
[0011] Disconnect the internal circuitry from the first interface;
[0012] Disconnect the internal circuitry from the second interface; and
[0013] Connect the first interface to the second interface.
[0014] A fault report can be any signal, particularly indicating a voltage interruption or drop that no longer guarantees reliable operation of the connected device. Alternatively or additionally, a fault report can also indicate other faults that cast doubt on the reliability of the connected device as a connection node for network connectivity. Fault reports can be received, for example, via one of two interfaces, but can also be received via other data connections or, for example, via internal signals indicating a voltage drop.
[0015] According to the embodiments, the network connection is in particular an Ethernet connection, and the backbone is in particular an Ethernet-backbone for coupled rail vehicles.
[0016] The connection between the first and second interfaces can also be made simultaneously with the disconnection of the internal circuitry (e.g., via at least one switch). This connection thus constitutes a bypass that bridges the connection device or the internal circuitry, thereby disconnecting potentially faulty internal circuitry due to the bridging network connection.
[0017] The term "interface" should be understood as any possibility of inputting or outputting signals to or from a connection device. It may, but is not required to, include plug-in or soldered connections.
[0018] Optionally, the connection device further includes a third interface and a fourth interface. In the base state, the internal circuitry is connected to both the third interface and the fourth interface. The method then further includes:
[0019] In response to the receipt of a fault report, the internal circuitry is disconnected from the third port and the internal circuitry is disconnected from the fourth port.
[0020] Connect the third interface to the fourth interface.
[0021] The first to fourth interfaces can be coupled to corresponding data lines of the backbone network, respectively. These data lines form a redundant network connection along the backbone network. The connection device can, in particular, be a so-called Ethernet Train Backbone Node (ETBN), which constitutes a connection node for the Ethernet-backbone network of the rail vehicle. According to an embodiment, the backbone network (so-called Backbone) in the rail vehicle is redundantly constructed and therefore includes at least two data lines. Therefore, the corresponding connection nodes (connection devices) each have two input terminals and two output terminals for the two data lines.
[0022] The connection between the third and fourth interfaces can optionally be made without time delay or directly, thereby disconnecting the internal circuitry from faults due to the bridging of the third and fourth data lines, and making the bridged data lines available for communication without time delay. The first and second data lines, which may not yet be bridged at this time, can be used to implement the regulated shutdown of the connected device and thereby notify other devices.
[0023] Optionally, the connection between the first interface and the second interface is therefore delayed compared to the connection between the third interface and the fourth interface.
[0024] Optionally, the method further includes at least one of the following:
[0025] Activate the backup voltage supply device;
[0026] Disconnection device;
[0027] The internal circuitry operates in the primary mode (master device);
[0028] Internal circuitry operates in secondary mode (slave device);
[0029] The connection device in the main mode is monitored by a separate connection device in the secondary mode.
[0030] A fault report is triggered when another connection device in the secondary mode determines that a connection device in the primary mode has failed.
[0031] In response to receiving or sending a fault report, switch from secondary mode to primary mode;
[0032] When operating in secondary mode and in response to receiving a fault report about the first data line or the second data line, the (bridged) third and fourth data lines are connected via a network (e.g., for another connection device).
[0033] Wait for at least a predetermined duration.
[0034] Understandably, the timing sequence of the various steps can be arbitrarily chosen, as long as the underlying technical effect is achieved. However, these steps can also be executed precisely in the mentioned order, but this is not mandatory. Furthermore, waiting steps can occur between each step in the defined steps or only before some of them. The predetermined duration for each waiting step can also be chosen differently or identically. This ensures that these steps can be executed completely and without failure, and that the connection is disconnected, for example, only after the corresponding feedback or confirmation.
[0035] A backup voltage supply can be implemented, for example, by a separate energy storage device, which may be located within the connection device or externally, but accessible to the connection device. Therefore, it should be ensured that sufficient current is available for the execution steps to enable the regulated shutdown of the connection device.
[0036] Primary and secondary modes can be implemented, for example, via a master-slave network configuration, where primary mode corresponds to master device mode and secondary mode corresponds to slave device mode. Therefore, in primary mode, the connecting device provides access to the network. In secondary mode, the connecting device acts only as an auxiliary or backup device, assuming the function of the master device when a fault is detected. Monitoring of other devices, such as the connecting device in primary mode, can also be implemented in secondary mode.
[0037] Optionally, the method further includes sending a notification regarding the disconnection of the connection device to the other connection device.
[0038] The embodiment relates to a connection device for Ethernet connectivity between coupled rail vehicles along a backbone network having a first data line and a second data line. The connection device forms an access node from one of the coupled rail vehicles to the backbone network and includes the following:
[0039] First interface for the first data line;
[0040] The second interface for the second data line;
[0041] Internal circuitry for enabling network access to the coupled rail vehicle;
[0042] A first switch, which connects the internal circuitry to a first interface in the standard position;
[0043] A second switch, in its standard position, connects the internal circuitry to a second interface, wherein the first interface can connect to the second interface in the corresponding activated positions of the first and second switches; and
[0044] Control means for performing steps of the methods as described in this disclosure.
[0045] The method, or at least a portion thereof, may also be implemented or stored in software or on a computer program product as instructions, wherein the stored instructions are capable of performing the steps according to the method when the method is run on a processor. Therefore, the present invention also relates to a computer program product or a machine-readable medium thereon storing software code (instructions) configured to perform one of the methods described above when executed by a processing unit (e.g., a control device). The data processing unit may be any form of computer or control device having a corresponding microprocessor capable of executing the software code.
[0046] Optionally, the backbone network also includes a third data line running parallel to the first data line and a fourth data line running parallel to the second data line, in order to enable redundant network connections along the backbone network. The connection device also includes the following:
[0047] The third interface is used for the third data line;
[0048] The fourth interface for the fourth data line;
[0049] The third switch connects the internal circuitry to the third interface in the standard position;
[0050] The fourth switch connects the internal circuitry to the fourth interface in the standard position, wherein the third interface can connect to the fourth interface in the corresponding activated positions of the third and fourth switches.
[0051] Optionally, the connecting device has at least one of the following:
[0052] A backup voltage supply device for providing backup voltage supply, so as to maintain the operating capability of the connected device for a predetermined time.
[0053] Vehicle interface used to provide network connectivity for the coupled rail vehicle;
[0054] An interface for external voltage supply, so as to provide a regular voltage supply for connected devices.
[0055] The embodiments also relate to a rail vehicle having a first connection device and a second connection device to provide redundant network connectivity via a backbone network. The first and second connection devices can be constructed identically. The two connection devices can be constructed as described in this disclosure. However, the two connection devices can be configured differently. For example, one can be configured in a primary mode, while the other can be configured in a secondary mode.
[0056] It is understood that all the functions of the control device described above can be configured as additional optional method steps according to the embodiments. Furthermore, it is understood that the listed order is not necessarily the order in which the method steps are performed. These steps may also be performed in other orders or only a portion of these method steps may be performed.
[0057] Embodiments of the invention will be better understood from the following detailed description and accompanying drawings of various embodiments; however, these embodiments should not be construed as limiting the present disclosure to the particular implementation, but are merely for explanation and understanding. Attached Figure Description
[0058] Figure 1 A schematic flowchart illustrating a method for more quickly reconfiguring a connection device according to an embodiment of the present invention is shown.
[0059] Figure 2 A connection device for network connectivity according to an embodiment is shown.
[0060] Figure 3 A diagram illustrating a network topology for use in a rail vehicle complex, as used in the embodiments. Detailed Implementation
[0061] Figure 1 The diagram illustrates a connection device for more rapid reconfiguration of network connections between coupled rail vehicles (see below). Figure 2 A schematic flowchart of the method. The method includes:
[0062] Receive fault reports regarding malfunctions involving the connection device;
[0063] Stop the activity of the internal circuitry;
[0064] The notification of the fault is sent to another connected device so that the activity can be taken over by the other connected device.
[0065] Disconnect the internal circuitry from the first interface;
[0066] Disconnect the internal circuitry from the second interface; and
[0067] Connect the first interface to the second interface.
[0068] It is understood that all the functions of the connecting device or its components can be configured as additional, alternative method steps. Furthermore, it is understood that...
[0069] Figure 2 A connection device 100 according to an embodiment of the present invention is shown. The connection device 100 includes a first interface 101, a second interface 102, a third interface 103, and a fourth interface 104. The first interface 101 can be connected to a first data line 31, the second interface 102 can be connected to a second data line 32, the third interface 103 can be connected to a third data line 33, and the fourth interface 104 can be connected to a fourth data line 34. The first data line 31 and the second data line 32 constitute a network connection line. The third data line 33 and the fourth data line 34 are configured for a redundantly constructed second network connection. The redundantly constructed network connection may be part of a backbone network 30 (Ethernet backbone) and connects different coupled rail vehicles.
[0070] According to an embodiment, the connection device 100 further includes a vehicle interface 105 and a power supply interface 107. The vehicle interface 105 allows the establishment of a connection with a corresponding rail vehicle. This connection is, for example, an Ethernet data connection via data lines 31, 32, 33, and 34, wherein the connection device 100 thus functions as an access node. The power supply interface 107 supplies voltage to the connection device 100 and its components from an external voltage source (e.g., the external voltage source of the rail vehicle).
[0071] According to an embodiment, the connection device 100 further includes (at least) an internal circuit 110 having four ports: a first port P1, a second port P2, a third port P3, and a fourth port P4. Furthermore, the connection device 100 includes a first switch S1 assigned to the first port P1 of the internal circuit 110, a second switch S2 assigned to the second port P2, a third switch S3 assigned to the third port P3, and a fourth switch S4 assigned to the fourth port P4 of the internal circuit 110. These four ports P1, P2, P3, and P4 serve as interfaces for four data lines 31, 32, 33, and 34 from the internal circuit 110 to the redundant network. Accordingly, the internal circuit 110 is configured to provide at least one access function from its associated rail vehicle to the redundant network.
[0072] According to an embodiment, the connection device 100 includes an auxiliary voltage source 120 and a control device 130.
[0073] The auxiliary voltage source 120 is used to supply voltage to the connection device 100 and its components, for example, when the external voltage supply via the power supply interface 107 is interrupted. According to an embodiment, the auxiliary voltage source 120 is capable of maintaining at least some or all of the functions of the connection device 100 for at least a predetermined duration. This predetermined duration may be, for example, 0.5 s, 1 s, 2 s, 3 s, or 5 s. To achieve this, the auxiliary voltage source 120 may, for example, include one or more capacitors, batteries, or other rechargeable devices.
[0074] Control device 130 is configured for use via control lines ( Figure 2 The dashed lines in the diagram represent control switches S1 to S4, each having a standard position, meaning it occupies a pre-set (default) position when not actively controlled. The standard positions define the basic state for circuit connections, as defined below. According to the standard, the first switch S1 connects the first data line 31 to the first port P1, the second switch S2 connects the second data line 32 to the second port P2, the third switch S3 connects the third data line 33 to the third port P3, and the fourth switch S4 connects the fourth data line 34 to the fourth port P4.
[0075] Four switches S1, S2, S3, and S4 are used to bridge the internal circuit 110 or to enable data connections along the first data lines 31 and 32 (via the first and second switches S1 and S2), or to enable data connections along the third and fourth data lines 33 and 34 (via the third and fourth switches S3 and S4). This is particularly important in fault conditions. Therefore, according to an embodiment, the control device 130 is configured to operate the four switches S1, S2, S3, and S4 in response to the receipt of a fault report, thereby enabling data connection between the first data line 31 and the second data line 32, or between the third data line 33 and the fourth data line 34. An auxiliary voltage source 120 here ensures that, in fault conditions (e.g., during a current interruption), the control device 130 still provides sufficient current for bridging data lines 31 to 34.
[0076] According to an embodiment, the control device 130 switches S1 to S4 as follows. When the control device 130 receives a fault report, it first disconnects the internal circuit 110 from the third interface 103 by operating the third switch S3. Furthermore, it disconnects the internal circuit 110 from the fourth interface 104 and connects it to the third interface 103 by operating the fourth switch S4. Therefore, data is transmitted between the third data line 33 and the second data line 34. According to the embodiment, these switching operations are performed without time delay, that is, as soon as possible after receiving the fault report.
[0077] According to the embodiment, an additional handover operation is performed with a time delay, meaning it is not performed immediately in response to the receipt of a fault report. In these additional handover operations, the internal circuit 110 is disconnected from the first interface 101 by manipulating the first switch S1. Furthermore, in these additional handover operations, the internal circuit 110 is disconnected from the second interface 102 and connected to the first interface 101 by manipulating the second switch S2. Therefore, data is then forwarded between the first data line 31 and the second data line 32.
[0078] According to an embodiment, the time delay for the additional switching operation is used to perform one or more of the following operations:
[0079] Stop the activity of internal circuit 110;
[0080] Send a fault notification about the still-existing data connection (e.g., to another connection device) so that the activity can be taken over by another connection device;
[0081] Activate backup voltage supply device 120;
[0082] Disconnect the connecting device 100 or the internal circuit 110;
[0083] Send a notification about the (imminent) disconnection of the connection device 100 or internal circuit 110, such as about the data connection that still exists (e.g., to another connection device).
[0084] The order can be chosen arbitrarily.
[0085] Between each of the mentioned operations, a wait period of time related to the operation can be performed. The duration can be different for each of the mentioned operations. The duration can also be zero. Therefore, the steps involved can be executed without time delay or in parallel.
[0086] According to an embodiment, another switching operation is then performed. That is, according to an embodiment, the time delay can be selected such that the already executed operation can also be performed.
[0087] Figure 3 An embodiment is shown for applying the connecting device 100 to a combination of rail vehicles having rail vehicle 10 and additional rail vehicle 10a. According to the embodiment, each rail vehicle is equipped with two connecting devices 100, 200 (or 100a and 200a) to connect the respective rail vehicle to the backbone network 30 for network connectivity. All connecting devices 100, 200, 100a, 200a can be identically constructed and can provide the same functionality as described above (see [reference to...]). Figure 2(Description). Therefore, each rail vehicle 10, 10a is coupled to, for example, using... Figure 2 The described connection devices 100 and 200 are coupled to additional connection devices 100a and 200a configured differently according to embodiments. The backbone network 30 includes redundant data lines 31, 32, 33, and 34, as described above.
[0088] According to an embodiment, the connection devices 100, 200 (or 100a, 200a) are redundantly configured to ensure safe access to the backbone network 30 even in the event of failure of one connection device 100, 200 or in the event of a voltage drop. To achieve redundancy, the connection devices 100, 200 (or 100a, 200a) or the control device 130 present therein are configured to provide one or more of the following functions:
[0089] Internal circuitry 110 operates in the main mode (master device);
[0090] Internal circuitry 110 operates in secondary mode (slave device);
[0091] In response to the receipt of a fault report, the system switches from secondary mode to primary mode.
[0092] When running in secondary mode and in response to receiving a fault report about the first data line 31 or the second data line 32, the third data line 33 and the fourth data line 34 are used for network connection.
[0093] According to an embodiment, the connection devices 100 and 100a for the associated rail vehicles 10 and 10a are configured, for example, in a primary mode (master device), while the other connection devices 200 and 200a are configured in a secondary mode (slave device). For example, the secondary mode may not provide active access to the backbone network 30, but instead is defined as a standby mode to take over the functions of the primary connection devices in the event of a fault. Furthermore, the other connection devices 100a and 200a may (in the secondary mode) be configured to observe the connection devices 100 and 200 (in the primary mode) and / or monitor them, and intervene in the event of a fault. For example, when the monitored connection devices 100 and 200 malfunction, a fault report may be output in the secondary mode.
[0094] Therefore, according to the embodiment, one of the additional connection devices 100a, 200a can trigger reconfiguration. As already described, reconfiguration includes disconnecting the faulty connection devices 100, 200 (in the primary mode) and having the functionality taken over by the additional connection device 100a, 200a involved, which then switches from the secondary mode to the primary mode.
[0095] According to embodiments, the transmission of a fault report can also be triggered by an interruption of the external power supply. For example, when the connection device 100 determines a power outage, it can send a fault report and / or trigger a reconfiguration according to various embodiments. For example, the internal power supply can send a fault report (e.g., to the control device 130), followed by the reconfiguration of the connection device 100 as follows:
[0096] Close the bridge on one of the two lines.
[0097] Close or end a specific activity.
[0098] Notify the other connection device 200 (in secondary mode) that connection device 100 (in primary mode) is offline.
[0099] Waiting for a predetermined duration,
[0100] Turn off other bridges
[0101] Connectors 100 and 200 are turned off.
[0102] According to an embodiment, the rail vehicle assembly includes a train-wide Ethernet network (e.g., a backbone Ethernet network), which train units access and can communicate with each other via connection devices 100, 200, 100a, and 200a. When, for example, rail vehicle 10 wants to communicate with rail vehicle 10a via a standard-defined specific IP address, the communication runs via a data line from rail vehicle 10 to the vehicle interface 105 of the connection device 100, which operates in primary mode. From there, the connection is forwarded to another connection device 100a, also operating in primary mode, of another rail vehicle 10a. The connection device 100a finally establishes a communication connection with the other rail vehicle 10a via its vehicle interface 105a.
[0103] When one of the connection devices 100, 100a is interrupted or disconnected in the primary mode, its function, according to the embodiment, is taken over by the other connection device 100, 100a involved in the secondary mode, and communication is restored. To achieve this feature, according to the embodiment, such as by utilizing... Figure 2 As described, network lines 31, 32, 33, and 34 are bridged using the described circuit connections. These network lines enter and exit connection devices 100, 200, 100a, and 200a. In the event of an interruption or shutdown, continuous data forwarding can therefore be maintained on the two network lines 31, 33 or 32, 34 (backbone network cables).
[0104] The advantage provided by the embodiments is that the measured time for reconfiguring the entire network, i.e. the time for stopping ongoing communication, can be reduced to 50 to 100 ms using the method described.
[0105] The features of the invention disclosed in the specification, claims and drawings are important for realizing the invention, not only individually but also in any combination.
[0106] List of reference numerals
[0107] 10 rail vehicles
[0108] 30 backbone networks
[0109] 31 First Data Line
[0110] 32 Second Data Line
[0111] 33 Third Data Line
[0112] 34 Fourth Data Line
[0113] 100, 100a connection device (e.g., in main mode or main equipment)
[0114] 101 First Interface
[0115] 102 Second Interface
[0116] 103 Third Interface
[0117] 104 Fourth Interface
[0118] 105 vehicle interface
[0119] 107 External Voltage Supply Device
[0120] 110 internal circuit
[0121] 120 backup voltage supply unit
[0122] 130 control device
[0123] Additional connection devices for 200 and 200a (e.g., in secondary mode or from a slave device).
[0124] P1 First Port
[0125] P2 second port
[0126] P3 third port
[0127] P4 fourth port
[0128] S1 First Switch
[0129] S2 Second Switch
[0130] S3 Third Switch
[0131] S4 Fourth Switch
Claims
1. A method for more rapidly reconfiguring connection devices (100) for network connections between coupled rail vehicles (10, 10a) along a backbone network (30), wherein, The connecting device (100) has a first interface (101), a second interface (102), and an internal circuit (110). The internal circuit is connected to the first interface (101) and the second interface (102) in a basic state. The connecting device (100) and other connecting devices (200) form a redundant access node for one of the coupled rail vehicles (10) to the backbone network (30). Its features are, Receive fault reports regarding faults involving the connection device (100); Stop the activity of the internal circuit (110); The notification regarding the fault is sent to the additional connection device (200) so that the activity can be taken over by the additional connection device (200); Disconnect the internal circuit (110) from the first interface (101); Disconnect the internal circuit (110) from the second interface (102); and Connect the first interface (101) to the second interface (102).
2. The method according to claim 1, wherein, The connecting device (100) also has a third interface (103) and a fourth interface (104), and the internal circuit (110) is also connected to the third interface (103) and the fourth interface (104) in the basic state. The method further includes: In response to receiving the fault report, the internal circuit (110) is disconnected from the third port (103) and the internal circuit (110) is disconnected from the fourth port (104); Connect the third interface (103) to the fourth interface (104).
3. The method according to claim 2, wherein, The connection between the first interface (101) and the second interface (102) is delayed in time compared to the connection between the third interface (103) and the fourth interface (104).
4. The method according to any one of claims 1 to 3, further comprising at least one of the following: Activate the backup voltage supply device (120); Disconnect the connecting device (100); The internal circuitry (110) operates in the main mode. The internal circuitry (110) is operated in secondary mode. The connection device (100) in the main mode is monitored by an additional connection device (200) in the secondary mode. When the additional connection device (200) in the secondary mode determines that the connection device (100) in the primary mode has malfunctioned, the fault report is triggered; In response to receiving or sending a fault report, the system switches from the secondary mode to the primary mode. When operating in the secondary mode and in response to receiving a fault report regarding the first interface (101) or the second interface (102), the third interface (103) and the fourth interface (104) according to claim 2 are used for the network connection; Wait for at least a predetermined duration.
5. The method of claim 4, further comprising, by reference to claim 2, sending a notification regarding the disconnection of the connection device (100) to the other connection device (200).
6. A machine-readable storage medium having instructions stored thereon, the instructions being configured to perform the method according to any one of claims 1 to 5 when executed on a data processing unit.
7. A connection device (100) for network connection between coupled rail vehicles (10, 10a) along a backbone network (30), the backbone network having a first data line (31) and a second data line (32), wherein, The connecting device (100) forms an access node for one of the coupled rail vehicles (10) to the backbone network (30). Its features are, First interface (101) for the first data line (31); The second interface (102) for the second data line (32); Internal circuitry (110) for enabling network access of the coupled rail vehicle (10). A first switch (S1) connects the internal circuit (110) to the first interface (101) in the standard position; A second switch (S2) connects the internal circuit (110) to the second interface (102) in its standard position, wherein the first interface (101) can connect to the second interface (102) in the corresponding activated positions of the first switch (S1) and the second switch (S2); and Control device (130) for performing the steps of the method according to claim 1.
8. The connecting device (100) according to claim 7, wherein, The backbone network (30) also has a third data line (33) parallel to the first data line (31) and a fourth data line (34) parallel to the second data line (32) to enable redundant network connections along the backbone network (30), and the connection device (100) also has the following: The third interface (103) for the third data line (33); Fourth interface (104) for the fourth data line (34); The third switch (S3) connects the internal circuit (110) to the third interface (103) in the standard position; The fourth switch (S4) connects the internal circuit (110) to the fourth interface (104) in the standard position, wherein the third interface (103) can be connected to the fourth interface (104) in the corresponding activated positions of the third switch (S3) and the fourth switch (S4). The control device (130) is configured to perform the method according to any one of claims 2 to 5.
9. The connecting device (100) according to claims 7 and 8, wherein the connecting device comprises at least one of the following: A backup voltage supply device (120) is used to provide backup voltage supply so that the operating capability of the connection device (100) can be maintained for a predetermined time. Vehicle interface (105) for providing network connectivity to the coupled rail vehicle (10). An interface (107) for external voltage supply is provided to provide a conventional voltage supply for the connection device (100).
10. A rail vehicle, the rail vehicle comprising: The first connecting device (100) according to any one of claims 7 to 9, and The second connection device (200) according to any one of claims 7 to 9 is used to provide redundant network connection to the backbone network (30).