Method for operating a communiction system for trains

The invention relates to a method for operating a communications system for trains. It is intended for use in a train, a train bus for Control features available as well as a train bus system for information services, wherein on both Zugbussysteme alike a specific car Addressing.

Modern communication systems in trains are due to the presence determined by train bus systems. The communication in particular with the The aim of the exchange of data, information, control statements and adjusting requirements takes place both between vehicles of the train as even within the vehicles themselves. For the smooth flow of data exchange arranged between the carriage and in the train Computer nodes are those each via so-called gateways to the connected through the train bus.

Various solutions for use in train bus systems and Known specifications. This includes the WTB (a UIC standard 556 corresponding Wire Train Bus), the <EBAS> - system based on a CAN (Controller Area Network) - communication is based, as well as other wire or radio-based solutions. An essential feature of known Zugbustechnologien is that this so far primarily for control tasks on the trains are provided. For this reason, they have the special property a recognition of the fact set cars and their adjustment direction. created the associated process, in the course of this information be, is the so-called train setup. Solutions for associated procedures and arrangements are known from DE 196 24 777, DE 199 29 644 or DE 198 56 540.. The train setup is a mandatory requirement for assigned a correct dare selective addressing of the car Computer nodes and therefore the subsequent for the proper conduct Traffic.

Addressing recovered in the train setup is valid only for a current Train composition and therefore carries dynamic character. Because as essential Tasks to known Zugbussysteme especially those control functions such as traction control, brake control, selective discharge or an exchange of specific vehicle or load data are valid, the Scope of the data to be transmitted installments rather limited. In contrast, others are Aspects, such as security requests and real-time capability of data transmission, in the foreground.

In addition to these train bus systems, the tailored for specific control tasks were, data transfer systems are designed for a general computer overarching known information exchange. A typical application area this is particularly the commercial network technology. For the Internet finds, for example, the network-independent TCP / IP protocol family wide application.

To compatible the benefits of using these proven, in many ways as well as low-cost solutions to applications in trains to transfer, this technique provides for specific tasks in local to communication systems. Specifically, these are applications for passenger information systems, for passenger entertainment, for seat reservations or for a future Internet connectivity.

Of such information systems have safety-related requirements the Steuerungszugbussysteme and a real-time capability not necessarily meet, but far better satisfy the need for high data throughput rates. However, for prepared on this basis it is Informationszugbussysteme e-benfalls To make needed this so that a car-specific access is ensured in there installed computer node. That is, an award of addresses for the individual computer nodes (IP addresses) must reference done based on membership in a particular car. is If the consideration Informationszugbussystem static one Train, which is not varied in its juxtaposition, so would be a fixed specification car-based addresses with a reasonable effort to solve. However, if trains are equipped with Informationszugbussystemen that subject to continuous changes in its composition, so must also allows for dynamic allocation of each computer node will.

The invention is therefore based on the object, a method for operating to provide a communication system for trains, which as optimized Train bus system for control functions (Steuerungszugbussystem) available is, as well as an optimized train bus system for information services (Informationszugbussystem) being equally over both a Zugbussysteme dare specific addressing of computer nodes to be possible.

This object is achieved in connection with the preamble of the main claim according to the invention by at a Steuerungszugbussystem a train setup is carried out from a composition in terms of a number, an order and a direction of adjustment of cars and with this Cart firmly connected computer nodes of the control system is apparent, and that the information on the composition of such determined the car will be passed on to a Informationszugbussystem and this to the formation of dynamically modified addresses for also fixedly connected to the car computer node of the information system be used.

According to a particularly expedient embodiment of the invention is based the Informationszugbussystem on a use of the TCP / IP technology, wherein a carriage selective addressing is achieved by that the supplied by Steuerungszugbussystem information on the Composition of the car the IP addresses of the computer nodes of the information system will dare position dependent formed.

According to a further advantageous embodiment of the invention the IP addresses of the computer nodes of the information system with the information obtained from the train setup on the composition of Cart included in a data base to train configuration.

The main advantages of the invention are that the data transmission a train bus system for executing control and regulation functions takes place completely separated from a transmission of data for other information tasks, whereby the safety aspect substantially increased becomes. Furthermore, for information transfer common commercial Systems are used, the inventive modification of the above Addresses, no rail-specific developments imply yet anytime enable dare selective transmission of information. This is the varied offer cost-effective solutions for a wide Applications to access of internet access to Available. An embodiment of the invention will be explained in more detail below.

In a train, there are two communication networks in the form of two Train bus systems. A first train bus system is as Steuerungszugbussystem designed and is equipped with functions for performing a train setup for recovery of information on the string of vehicles and of the specific trolley Data provided. A communicating via the Steuerungszugbussystem Control system for control and regulation of the train used, in particular for traction control and for an electronic Control of wagon and locomotive-side installed brakes. From the Train setup go ordinal numbers on the specific serialization forth. These serial numbers are a database on a server of assigned drive vehicle, in addition, other information about the string of vehicles and wagon related information is stored. From the train setup detected serial numbers are for the specific car Addressing data transmissions used in the Steuerungszugbussystem.

A second train bus system is as Informationszugbussystem based a TCP / IP network constructed which also via a central server operates on the traction units. Gateways are the compute nodes the information system risk as to the Informationszugbussystem tethered. Thus over the Informationszugbussystem also dare to selectively singled out computer nodes can be accessed, which are about the Train setup determined serial numbers of cars as well as the other information on the train composition to the server of Informationszugbussystems passed. This is done by the contents of the data base via pass the train composition to the server of Informationszugbussystems becomes. About this then to be used for IP addresses access to individual cars as distinguishable computer node in the adjusted such that a unique association between the IP address and the position of the associated carriage with his mind fixed Computer node is. The information system can thus selectively functions passenger information, passenger entertainment, a seat reservation meet and Internet connection.