WO2019052777A1

WO2019052777A1 - Data transmission device and method for transmitting data between a first and second vehicle unit of a track-bound vehicle

Info

Publication number: WO2019052777A1
Application number: PCT/EP2018/072391
Authority: WO
Inventors: Rudolf Neite
Original assignee: Siemens Mobility GmbH
Priority date: 2017-09-14
Filing date: 2018-08-20
Publication date: 2019-03-21
Also published as: DE102017216318A1

Abstract

The invention relates to a data transmission device (10) and method for transmitting data between a first vehicle unit (11) and a second vehicle unit (12) of a track-bound vehicle (1). The data transmission device (10) comprises a transmission equipment (20) for transmitting a data signal (26) representative of the data between the first vehicle unit (11) and the second vehicle unit (12). To provide simple upgrading of the track-bound vehicle for a transmission rate of at least 1000 Mbit/s between the vehicle units, the transmission equipment (20) for the transmission of data is designed with a transmission rate of at least 1000 Mbit/s and comprises a first connection unit (31), which is designed to connect a first vehicle cable (22), which comprises at least four conductor pairs and is designed for the transmission of the data signal (26) within the first vehicle unit (11), to two transmission cables (23, 123), which each comprise at least two conductor pairs and are designed for the transmission of the data signal (26) to the second vehicle unit (12), and a network isolator unit (41, 42) for galvanically isolating a first section (25, 127) from a second section (27, 125) of the transmission cable (23, 123).

Description

description

A data transferring apparatus and method for transferring data between first and second vehicle units of a tracked vehicle

The invention relates to a data transmission device and a data transmission method for transmitting data between a first vehicle unit and a second vehicle unit of a track-bound vehicle. The Datenübertra ^¬ constriction device comprises a transmitting means for transmitting a data signal representative of the data between the first and second vehicle unit. In principle, it is known to transmit data between vehicle ^{units of} a track-bound vehicle. For this purpose, a transmission device is provided which is arranged at least in sections between the vehicle units and transmits a data signal representing the data signal.

Against this background, it is an object of the invention to provide an improved data transmission device.

The object is achieved by the data transmission device mentioned in the introduction, in which the transmission device is designed to transmit the data at a transmission rate of at least 1000 Mbit / s and in which the transmission ^device comprises a first connection unit, which is designed to be a vehicle cable, which identifies four wire pairs at least and is designed for transmission of your Since ^¬ tensignals within the first vehicle unit, to be connected to two transmission cables, each having at least two wire pairs and are designed for transmission of your data signal to the second vehicle unit. The transmission device further comprises a network isolator unit for electrically isolating a first portion from a second portion of the transmission cables. The invention is based on the recognition that in spurgebun ^¬ which vehicles transmission ^cable between the vehicle units are often provided for a transmission rate of 100 Mbit / s (Fast Ethernet). In particular, two parallel transmission cables are used, each with two pairs for the redundant transmission of a data signal having a Übertra ^¬ transmission rate of 100 Mbit / s common. It is desirable ei ^¬ ne transfer rate of at least 1,000 Mbit / s to achieve between the vehicle units, as within the vehicle units currently and in the future common network components (in

Usually switches) are available, which support a transfer rate of at least 1000 Mbit / s. To achieve a transfer rate of 1000 Mbps, the network components within the vehicle unit often use the standard 1000BASE-T. The network components are connected to each other via cables with four wire pairs (ie eight wires).

The invention is further based on the finding that an upgrade of vehicles from a transmission rate of 100 Mbit / s to a transmission rate of 1000 Mbit / s is associated with a ^high outlay. Thus, it is often necessary to exchange transmission cables and connectors. The invention is further based on the knowledge that two vehicle units to be connected together can often be at different electrical potentials.

The solution according to the invention solves these problems in that the connection unit distributes the data signal transmitted within the first vehicle unit to the two transmission cables. Thus, existing transmission cables with two wire pairs - which were previously used for a transmission rate of 100 Mbit / s - can be used for the transmission of data at a transmission rate of 1000 Mbit / s. The redundancy of the transmission is indeed lost. However, there is the advantage that the retrofitting of a track-bound vehicle can be achieved particularly easily and with little effort. Furthermore, the erfindungsge ^¬ Permitted solution addresses these issues by providing a Netzwerkisolator- Unit produces a galvanic isolation between the first vehicle unit and the second vehicle unit.

The track-bound vehicle is preferably designed as a rail vehicle, more preferably as an association of rail vehicles.

The person skilled in the art understands the term "wire" preferably as a copper conductor, in particular as a copper wire, preferably as a plastic-insulated copper wire.

The person skilled in the art will understand the term "pair" preferably as two wires twisted into a pair, and the person skilled in the art will understand the term "cable" preferably as a single wire pair or a plurality of wire pairs connected together to form a cable are stranded.

Further, the skilled artisan understands the phrase "the vehicle wiring, which is designed for transmission of the data signal" or "transmission cable, which is designed for transmission of the data ^¬ signals" preferably in that the respective cable serves as a transmission medium for the data signal. The vehicle cable preferably has exactly four wire pairs, more preferably four separately shielded wire pairs. The transmission cable preferably has exactly two wire pairs. The term "data signal" is meant the art as physika ^¬ metallic signal (z. B. an electromagnetic wave) representing the data. For this purpose, the data is modulated onto the signal, for example by means of pulse amplitude modulation. The term data signal includes in the present invention, a Training as a plurality of signals that are distributed to several ^¬ re wire pairs and together form the data signal. The first connection unit is preferably connected to the vehicle cable and the transmission cables such that the data signal can be transmitted in a first transmission direction, starting from the first vehicle cable via the transmission cable to the second vehicle unit.

To a second, opposite transmission direction to he ^¬ possible, is formed, the first connection unit further preference ^¬ example, the data signal which is transmitted between the second vehicle unit and the first vehicle unit with ^¬ means of the transmission cable to aggregate for transmission on the first vehicle cable.

In particular, the transmission device is designed to transmit data signals simultaneously in both transmission directions. This simultaneous transmission in both directions is often referred to as full duplex. The skilled artisan understands the term "network isolator unit" as a unit for transmitting the data signal between a first portion and a second portion of a Ka ^¬ bels, while simultaneously an electrical isolation of the first portion is achieved from the second portion of the cable. The Network isolator unit is preferably designed for galvani ^¬ rule separation at a transmission rate of at least 1000 Mbit / s.

The first vehicle unit preferably comprises a first Kom ^¬ munikationsnetz and the second vehicle unit have preferably ^¬ as a second communication network. Further preferably, one or more terminals are connected to the respective communication network ^¬ tion data. In particular, the communication network is formed by one or more switches, wherein the terminals are each closed to a port of a switch ^¬ . The terminals are often with a transmission rate of 100 Mbit / s by means of cables which have two wire pairs, or with a transfer rate of Wenig ^¬ least 1000 Mbit / s by means of cables, the connected four wire pairs aufwei ^¬ sen. The communications networks include preferential each one Ethernet network or are formed as such from ^¬ .

The data transmission device according to the invention preferably serves for the transmission of data between the first and second communication network. In particular, the data transmission device according to the invention serves for the transmission of data between a first terminal connected to the first communication network and a second terminal connected to the second communication network.

Preferably, the connecting element is designed as a connector. In a preferred embodiment of the data transmission device according to the invention, the first and / or second vehicle unit is a multiple unit of a multiple unit train. He ^¬-making art solution is particularly advantageous especially in forming a Ver ^¬ bands of multiple units as conferences Potentialdif- particularly prone between multiple units.

According to a further preferred embodiment of the data transmission device according to the invention, the data signal is coded using 1000BASE-T. Under the designation 1000BASE-T the skilled person understands a coding using the standard IEEE 802.3 Clause 40 or IEEE 802.3ab.

In particular, the data signal transmitted on the vehicle cable within the first vehicle unit is encoded using 1000BASE-T. At the same time, the data signal transmitted on the two transmission cables between the first and second vehicle units is encoded using 1000BASE-T.

According to a further preferred embodiment of the data transmission device according to the invention, the transmission device comprises a second connection unit. The two- te connection unit is formed, a second vehicle ^¬ cable, which has at least four wire pairs and is designed to transmit the data signal within the second vehicle ^¬ unit to connect with the transmission cables.

In other words, for the second transmission direction from the second vehicle unit to the first vehicle unit, it is necessary to distribute the data signal transmitted within the second vehicle unit to the two transmission cables. This is achieved by the second connection unit. The second connecting unit vorzugswei ^¬ se is used to aggregate the data signal for transmission on the second vehicle cables for the first Übertra ^¬ supply direction.

In other words, for the transmission of the data in the first direction (i.e., from the first to the second vehicle unit), the second connection unit serves as an aggregation unit for merging the data signal to the second one

Vehicle wiring. For the transmission of the data in the second, opposite direction, the first connection unit serves as an aggregation unit for merging the data signal onto the first vehicle cable.

The transmitted within the second vehicle unit data ^¬ signal is preferably using the standard

1000BASE-T coded. In a preferred further development, the Netzwerkisolator- unit is arranged on a transmission path by means of the transmission cable between the first connecting unit and the second connection unit on a transmission path of the data signal, insbeson ^¬ particular. Preferably, the Netzwerkiso- lator unit is connected on the transmission path, insbeson ^¬ particular with the transmission cables connected in series. In a further preferred development, the two transmission cables comprise a first transmission cable and a second transmission cable. The network isolator unit includes fully a first network isolator element which is adapted to galvanic African separating a first portion of the first Übertra ^¬ supply cable from a second portion of the second Übertra ^¬ supply cable, and a second network isolators ^¬ gate element, which for galvanically separating a first portion of the second transmission cable from a second portion of the second transmission cable is formed.

From this embodiment, in which the network isolator elements can be installed at different locations, there is the advantage that the spatial arrangement of the network isolator unit designed to be flexible and the network ^¬ isolator unit can thus be installed to save space.

Preferably, the first and / or second network isolator element is designed for electrical isolation at a transmission rate of at least 1000 Mbit / s.

In another particularly preferred development, the first network isolator element within the first driving ^¬ generating unit and the second network isolator element within the second vehicle unit are arranged. This results in the further advantage that retrofitting a transmission ^¬ device in the area between the vehicle units is connected with little effort. In a particularly preferred embodiment, the vehicle cable is designed as category 5e, category 6, category 6a and / or category 7 cable. This allows a simple implementation of the solution since common cables can be used for the transmission of the first data signal within the vehicle unit. A category 5e, 6, 6a, or 7 cable is commonly referred to as Cat 5e, Cat 6, Cat 6a, and Cat 7. In a further preferred embodiment, the transmission cables are designed as Category 5 cables. Again, this allows a simple implementation of the solution because common cables can be used for the transmission of the second data signal on the transmission cable.

According to a further preferred embodiment, the transmission cables each have at least one quad stranding of twisted wires. Preferably, the transmission cable ^¬ a star quad.

The invention further relates to a tracked vehicle comprising a data transmission device of the type described above. The invention further relates to a data transmission method for transmitting data between a first vehicle unit and a second vehicle unit of a track-bound vehicle, comprising:

Transmission of a data signal representing data signal within the first vehicle unit on a first vehicle ^¬ cable with at least four wire pairs and

Transmission of the data signal between the first vehicle unit and the second vehicle unit with a transmission ^¬ rate of at least 1000 Mbit / s on two transmission cables, each having at least two wire pairs. The

Transmitted between the first and second vehicle unit comprises a distribution of the data signal by means of a first connection unit of the vehicle wiring to the two ^¬ transmission cable and a galvanic separating a first exhaust section of the transmission cable from a second portion of the transmission cables by means of a network isolator unit.

The invention further relates to a use of - Two transmission cables, each of which at least two

Have wire pairs and at least partially see between a first vehicle unit and a second vehicle unit of a track-bound vehicle duri ^¬ fen, and

a network isolator unit for electrically isolating a first portion from a second portion of the transmission cables

for transmitting data between the first and second vehicle units at a transmission rate of at least 1000 Mbit / s.

According to a preferred development of the use, a first connection unit is used to connect a first vehicle cable, which identifies at least four wire pairs and is designed to transmit the data signal within the first vehicle unit, to the two transmission cables. For advantages, embodiments and implementation details of the data transmission method according to the invention and / or the use according to the invention, reference may be made to the above description of the corresponding advantages, embodiments and details of execution of the data transmission device according to the invention.

Embodiments of the invention will now be explained with reference to FIGS. 1 shows an exemplary embodiment of a data transmission device according to the invention in a track-bound vehicle and FIG

Figure 2 is a schematic flow diagram of an embodiment ^¬ example of a data transmission method according to the invention.

FIG. 1 shows a section of a track-bound vehicle 1 in a schematic plan view. In the considered Th execution is the track-bound vehicle 1 as an association of rail vehicles, each comprising a plurality of mechanically coupled carriage formed. The track-bound vehicle 1 has a first vehicle unit 11 and a second vehicle unit 12, which each form a rail vehicle and are coupled to one another. In the embodiment shown in Figure 1, the vehicle unit 11 is a trainset 111 and the vehicle unit 12 is a train 112. A data connection of the vehicle units 11 and 12 is provided when coupling by means of a connector 46 and 146, which is arranged on a Kupplungsaltar. The first vehicle unit 11 has a first communication ^¬ network 13 and the second vehicle unit 12, a second commu ^¬ nikationsnetz fourteenth The first communication network 13 comprises at least a network component is a switch unit 28 and the second communication network 14 comprises at least a network component is a switch unit 29. The network components of the per ^¬ weiligen communication network 13 and 14 support a transmission rate of at least 1000 Mbit / s , The Netzkompo ^¬ nents are connected to each other via cables with four wire pairs (ie, eight wires). Data are transmitted via the first communication network 13 or second communications network 14 via a data signal 26 which is re presentative ^¬ respectively for the data (according to a method step A). The data is encoded as data signal 26 using the 1000BASE-T standard (IEEE 802.3ab).

To the first communication network 13 a plurality of terminals (not shown) and to the second communication network 14 meh ^¬ rere terminals (not shown) are connected by data technology. The terminals are connected at a transmission rate of 100 Mbit / s by means of cables having two wire pairs or at a transmission rate of at least 1000 Mbit / s by means of cables having four wire pairs. In order to enable communication between the first communication network 13 and the second communication network 14, it is desirable to transmit data between these communication networks ^¬ .

In a first transmission direction 8, the data is transmitted between the first communication network 13 and the second communication network 14 via a data transmission device 10 with a transmission device 20 (according to a method step B): The transmission device 20 comprises a transmission cable 23, which has two wire pairs, and a transmission cable 123, which has two wire pairs on ^¬ . The transmission cable 23 or 123 extends (as viewed in over ^¬ tragungsrichtung 8) starting from a first conjunction unit 31 which is disposed within the vehicle unit 11, on a path via a connector 44 or 144, which to a body of the vehicle unit 11 is further, via the connector 46 and 146 and further via a connector 48 and 148, which is arranged on a car body of the vehicle unit 12, to a second connection unit 32 which is disposed within the vehicle unit 12. The first Verbindungsein ^¬ standardized 31 serves for connecting a vehicle cable 22 with the transmission cables 23 and 123. In this case, the data signal is seen in the transfer direction 8 26 starting for transmission to the second vehicle unit 12 on the transmission cables 23 and 123 distributed from the vehicle wiring 22 (according to a method step bl). The second connection unit 32 is used to connect a vehicle cable 24 to the transmission cables 23 and 123. In the transmission direction 8, the data signal 26 is aggregated for transmission within the vehicle unit 12 to the second vehicle cable 24.

The first connection unit 31 is connected via the vehicle cable 22 to the switch unit 28 of the first communication network 13 in terms of data technology. The second connection unit 32 is data-technically connected via the vehicle cable 24 to the switch unit 29 of the second communication network 14. Starting from the switch unit 28 or 29, one or more vehicle cables (not shown) can lead to further switch units of the communication network 13 or 14. In addition, data is transmitted in a second transmission direction 9 between the second communication network 14 and the first communication network 13 by means of the data transmission device 10: The second connection unit 32 is used in this transmission direction 9 for splitting the Datenig- 26 on the transmission cables 23 and 123. The first Ver ^{In the} transmission direction 9, the binding unit 31 serves to aggregate the data signal 26 onto the first vehicle ^compartment 22. The data transmission apparatus 10 is designed to simultaneously transmit data in both transmission directions 8 and 9 (between the first communication network 13 and the second communication network 14). professionally as a full duplex ^¬ be distinguished).

The transmission cables 23 and 123 each have a four ^¬ stranding twisted wires and are each formed as a cable of category. 5 Within the first vehicle unit 11, a Netzwerkiso ^¬ lator element 41 is arranged, which cuts a first ^¬ From 25 of the transmission cable 23 electrically separated from a second portion 27 of the transmission cable 23 (according to a method step B2). Within the second vehicle unit 12, a network isolator element 42 is arranged, which galvanically separates a first section 125 of the transmission cable 123 from a second section 127 of the transmission cable 123 (according to method step B2). The network ^¬ factory isolator elements 41 and 42 are each a transmission rate of 1000 Mbit / s designed.

The exemplary embodiment shown in FIG. 1 enables transmission of data in the transmission directions 8 and 9 between the first 13 and second communication network 14 each with a transmission rate of 1000 Mbit / s. Here ^¬ the vehicle between the units 11 and 12, two transmission cables 23 and 123 is used, each having two re Aderpaa-. In this way already vorhande ^¬ ne transmission cables running between the car body and a coupling altar can frequently (and has been used for redundant transmission of data with a transfer rate of 100 Mbit / s), with the inventive solution for transmission of data a transmission rate of

1000 Mbps are used.

Claims

claims

1. Data transmission apparatus for transmitting data between a first vehicle unit (11) and a second vehicle unit (12) of a track-guided vehicle (1) to collectively ^¬:

a transmission device (20) for transmitting a data signal (26) representative of the data between the first (11) and second vehicle unit (12),

d a d u r c h e c e n c i n e s that

the transmission means (20) for transmitting the data at a transmission rate of at least 1000 Mbit / s is formed ^¬ and

a first connection unit (31), which is designed

o is a first vehicle cable (22) which identifies at least four wire pairs and adapted to transmission of your Since ^¬ tensignals (26) within the first Fahrzeugein ^¬ unit (11),

With

o two transmission cables (23, 123), each having at least two pairs of cores and over ^¬ meeting of the data signal (26) to the second driving ^¬ generating unit (12) are formed,

to connect, and

- a network isolator unit (41, 42) for electrically isolating a first portion (25, 125) from a second portion (27, 127) of the transmission cables (23, 123)

includes.

2. Data transmission device according to claim 1,

d a d u r c h e c e n c i n e s that

the first vehicle unit (11) is a multiple unit (111) and the second vehicle unit (12) is a multiple unit (112) of an engine is ^¬ trainset.

3. Data transmission device according to claim 1 or 2, characterized in that a

the data signal (26) is encoded using 1000BASE-T.

4. Data transmission device according to at least one of the preceding claims,

d a d u r c h e c e n c i n e s that

the transmission device (20) comprises a second connection unit (32), which is designed

a second vehicle cable (24),

- Which identifies at least four wire pairs and the

Transmission of the data signal (26) is formed within the second vehicle unit (12),

to connect with the transmission cables (23, 123).

5. Data transmission device according to claim 4,

d a d u r c h e c e n c i n e s that

the network isolator unit (41, 42) is arranged on a transmission path of the data signal (26) by means of the transmission cables (23, 123) between the first connection unit (31) and the second connection unit (32).

6. Data transmission device according to claim 5, characterized in that a

the two transmission cables (23, 123) comprise a first transfer ^¬ cable (23) and a second transmission cable (123) and

the network isolator unit

- a first network isolator element (41) which for the galvanic separation of a first portion (25) of the first transmission cable (23) from a second exhaust section (27) of the first transmission cable (23) being formed ^¬, and

- a second network insulator member (42) which for the galvanic separation of a first portion (125) of the second transmission cable (123) from a second exhaust section (127) of the second transmission cable (123) is formed from ^¬,

includes.

7. Data transmission device according to claim 6,

d a d u r c h e c e n c i n e s that

the first network isolator element (41) is disposed within the first vehicle unit (11) and the second network isolator element (42) is disposed within the second vehicle unit (12).

8. Data transmission device according to at least one of the preceding claims,

d a d u r c h e c e n c i n e s that

the vehicle cable (22, 24) is designed as category 5e, category 6, category 6a and / or category 7 cable.

9. Data transmission device according to at least one of the preceding claims,

d a d u r c h e c e n c i n e s that

the transmission cables (23, 123) are designed as category 5 cables.

10. Data transmission device according to at least one of the preceding claims,

d a d u r c h e c e n c i n e s that

the transmission cables (23, 123) each have at least one quadrilateral stranding of twisted cores.

11. A track-bound vehicle comprising a data transmission ^¬ device (10) according to at least one of the preceding claims.

12. A data transmission method for transmitting data between a first vehicle unit (11) and a second vehicle unit (12) of a track-bound vehicle (1) to collectively ^¬:

Transmitting (A) a data signal (26) within the first vehicle unit (11) representing the data to a first vehicle cable (22) having at least four wire pairs, transmitting (B) the data signal (26) between the first vehicle unit (11) and the second vehicle unit (12) with a transmission rate of at least 1000 Mbit / s to two

Transmission cables (23, 123) each having at least two wire pairs,

wherein the transmitting (B) between the first (11) and second vehicle unit (12)

- Distributing (Bl) of the data signal (26) by means of a first connection unit (31) of the vehicle cable (22) on the two transmission cables (23, 123) and

a galvanic separation (B2) of a first section (25, 125) of the transmission cables (23, 123) from a second section (27, 127) of the transmission cables (23,

123) by means of a network isolator unit (41, 42).

13. Use of

- two transmission cables (23, 123) respectively having we ^¬ nigstens two wire pairs and at least from ^¬ cut between a first vehicle unit (11) and a second vehicle unit (12) of a track-guided vehicle (1) extend, and

for transferring data between the first (11) and second vehicle unit (12) with a transmission rate of Wenig ^¬ least 1000 Mbit / s.

14. Use according to claim 13,

a first connecting unit (31) is used is formed in ^¬ nerhalb the first vehicle unit (11) a first vehicle cable (22) which identifies at least four wire pairs and with meeting the data signal (26), (with the two transmission cables 23, 123).