EP3686080A1 - Procédé de commande sécurisée d'une installation technique ferroviaire et noeud de réseau d'un réseau de données - Google Patents

Procédé de commande sécurisée d'une installation technique ferroviaire et noeud de réseau d'un réseau de données Download PDF

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Publication number
EP3686080A1
EP3686080A1 EP20150501.3A EP20150501A EP3686080A1 EP 3686080 A1 EP3686080 A1 EP 3686080A1 EP 20150501 A EP20150501 A EP 20150501A EP 3686080 A1 EP3686080 A1 EP 3686080A1
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EP
European Patent Office
Prior art keywords
state
distributed database
network node
stored
representative
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20150501.3A
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German (de)
English (en)
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EP3686080C0 (fr
EP3686080B1 (fr
Inventor
Stephan Griebel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility GmbH
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Siemens Mobility GmbH
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Publication of EP3686080C0 publication Critical patent/EP3686080C0/fr
Publication of EP3686080B1 publication Critical patent/EP3686080B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L15/00—Indicators provided on the vehicle or train for signalling purposes
    • B61L15/0072—On-board train data handling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
    • B61L27/40—Handling position reports or trackside vehicle data

Definitions

  • the invention relates to a method for the safe operation of a railway system, in which a state of at least one route element of the railway system or a value representative of the state is stored.
  • the states of elements of the external signal box system are recorded. These elements are, for example, light signals, switches, axle counters and the like. A defined state of these elements is, for example, the displayed signal term or the set course.
  • the states of the elements of the interlocking system are recorded and z. B. verified for safe operation or safe display.
  • the states of the elements serve, for example, as the basis for a safe route setting by the signal box computers and the safe display in the signal box computers. For safe operation and display, it must be ensured that the operator, such as a dispatcher, is only shown the states that are actually set. Since incorrect information about the conditions could have serious consequences for the operator, a lot of effort has so far been required to ensure safe operation.
  • the object is achieved for the method mentioned at the outset by storing the state or the representative value of the state in a distributed database.
  • a distributed database which is also called distributed ledger technology, is to be understood as a database distributed over several locations, regions or participants. All participants in this decentralized database can display all data records. The technology offers a verifiable history of all information stored in the specific data records. In a distributed database, each participant processes and verifies a transaction or information and thereby creates a record of this element and creates a consensus on its truthfulness.
  • a distributed database can be designed in one of several ways, for example as a blockchain.
  • a blockchain i.e. a blockchain, is usually understood to mean a continuously expandable list of data records referred to as blocks, which are linked to one another by means of cryptographic methods. Each block typically contains a cryptographically secure hash value of the previous block and possibly a time stamp and further transaction data.
  • the blockchain is generated by a so-called miner and distributed to all participants in the distributed database.
  • this changed state or the value of the route element representative of the changed state can be stored in the distributed database in such a way that the change can be recognized, at least in sufficient time. Every new data record about a changed state contains a current time stamp, by means of which a change compared to an earlier point in time is easily recognizable. If a blockchain is used as the distributed database, the changed state can be attached to the existing blockchain in a new block and distributed to all participants. The old states can still be read in the previous blocks.
  • the operation can be requested by at least one input and a second input later than the first input by at least one operator and the operation can only be carried out if the state stored in the distributed database or the representative value of the state of the link element has not changed between the first input and the second input.
  • the first entry is made at the start of an operating action and the second entry completes the operating action.
  • This embodiment ensures that the states of the route elements have not changed during the operating action. If a change is found between the first and the second entry, the execution of the operating action can be blocked and the operator can be checked again.
  • the state or the representative value of the state can be stored in a blockchain become.
  • Blockchain technology is a special embodiment of a distributed database in which changed states are stored and distributed in a block of the blockchain.
  • a blockchain offers a very high level of security, since the blocks with the states cannot be changed afterwards, and is therefore very trustworthy.
  • the state stored in the distributed database or representative value of the state can be achieved using a proof-of-authority procedure, in particular using a PKI - Public Key Infrastructure , be verifiable.
  • the PKI can be used to check whether the saved state or the states have been set by a trustworthy participant, namely the miner.
  • a very specific computer in a rail network can be authorized to create new blocks. This computer uses its PKI so that the other computers in the data network recognize from the PKI that the authorized and trustworthy computer has created the data.
  • the invention further relates to a network node of a data network in a railway system with at least one memory.
  • the network node is designed as part of a distributed database in which a state of at least one route element of the railway system or a value representative of the state is stored.
  • the network node can be designed to store a changed state or a value of the route element representative of the changed state in the distributed database in such a way that the change can be recognized. This has the advantage already described above that state changes in the distributed database are easily recognizable.
  • the network node for operating the railroad system can be designed by at least one first input and a second input later by at least one operator for the first input, the operation being carried out only if there is no change in the state and the status by reading from the first distributed database representative value of the state of the route element between the first input and the second input was recognized.
  • the invention also relates to a railway system with at least one data network.
  • the data network has at least one network node according to one of the above-mentioned embodiments.
  • Fig. 1 shows a railway system 1, which comprises a data network 2 and several route elements 3.
  • the route elements 3 should be part of an interlocking system, for example.
  • the route elements 3 can be, for example, light signals, switches, axle counting devices, track circuits or the like.
  • the railway system 1 further comprises various network nodes 4, which are connected to one another and form the data network 2.
  • the network nodes 4 are in turn formed by various computing devices, such as an operating and display computer 5, an interlocking computer 6 and a plurality of element computers 7.
  • the operating and display computer 5 is arranged, for example, in a control center of the railway system 1 and controls the display of the railway system 1 in this control center.
  • the signal box computer 6 is designed for the usual signal box tasks and the element computer 7 are part of the route elements and z. B. also provided to control this.
  • the network nodes 4 together form a distributed database 8, which here is, for example, a blockchain that is distributed to each network node.
  • the blockchain is therefore available on all network nodes 4.
  • the signal box computer 6 is in the exemplary embodiment in Figure 1 trained to a new block for the new, changed state of the route element 3 To create blockchain.
  • the signal box computer 6 thus takes over the task of the so-called miner, which creates or calculates new blocks of the blockchain, attaches and distributes them to the existing blockchain.
  • the interlocking computer 6 verifies the new block with the aid of the proof-of-authority method.
  • a PKI Public Key Infrastructure
  • the interlocking computer 6 validates the new block with its personal key.
  • the signal box computer 6 receives the new block with the changed state of the route element 3 within a relatively small time window of e.g. B. created and distributed a maximum of 5 seconds. This is an advantage over the alternative proof-of-work process, which would require more computing capacity and time.
  • the current status or the new blockchain is then distributed to all network nodes 4.
  • the current status of the route elements 3 is therefore always stored in the blockchain and can be read by all network nodes 4. If the status changes, the current status is saved in the blockchain together with the current time. This means that the new state flows into a new block and is distributed as a new or updated blockchain.
  • the state of the route elements 3 is graphically displayed to the operator by the operating and display computer 5 in the control center of the railway system.
  • the operator is, for example, a dispatcher.
  • Fig. 2 shows this graphic display with the reference number 9.
  • the state of the route elements 3 at the respective time is in Fig. 2 shown with reference numeral 10.
  • the blockchain of the distributed database 8 is shown with the history of the different states of the route elements 3 stored therein with reference number 11.
  • Fig. 3 The safe operation of the railway system 1 by an operator in the control center is schematically shown in Fig. 3 shown.
  • the operator starts a so-called command-dependent operation of the railway system 1 by making a first entry, for example by pressing a separate button.
  • the operator then inputs the operation into the operating and display computer 5 and confirms at the end of the operation, ie with a time delay, by making a second input, for example again by pressing a separate key.
  • step 13 in Fig. 3 checked by the operating and display computer 5 and / or by the signal box computer 6 whether one of the states of the route elements 3 has changed between the first and the second input.
  • the period between the first and the second entry is longer than 5 seconds and thus longer than the time window for creating a new block. This ensures that a new block is calculated, appended, signed and distributed when the state changes, before the second entry is made. An unnoticed change of state is therefore not possible.
  • step 14 in Fig. 3 the operation is carried out if the state has not changed between the first and the second entry. In step 14, however, the operation is rejected if a change in state between the first and the second input has been determined. The previously necessary test steps from the prior art are therefore no longer necessary.
  • the inventive method allows all network nodes 4 to check the respective states of the route elements 3 by accessing the blockchain.
  • the status information in the distributed database 8 can also be used for diagnostic purposes.
  • a diagnostic computer (not shown) can also be integrated in the data network 2.
  • the method according to the invention makes it possible to dispense with some of the test steps that are common today in the operation of the railway system 1 and the operator input, as a result of which the implementation is significantly less complicated and less complex. As in Fig. 3 shown, only a few process steps are necessary for this.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
EP20150501.3A 2019-01-23 2020-01-07 Procédé de commande sécurisée d'une installation technique ferroviaire et noeud de réseau d'un réseau de données Active EP3686080B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102019200777.5A DE102019200777A1 (de) 2019-01-23 2019-01-23 Verfahren zum sicheren Bedienen einer eisenbahntechnischen Anlage und Netzwerkknoten eines Datennetzwerks

Publications (3)

Publication Number Publication Date
EP3686080A1 true EP3686080A1 (fr) 2020-07-29
EP3686080C0 EP3686080C0 (fr) 2023-08-16
EP3686080B1 EP3686080B1 (fr) 2023-08-16

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EP20150501.3A Active EP3686080B1 (fr) 2019-01-23 2020-01-07 Procédé de commande sécurisée d'une installation technique ferroviaire et noeud de réseau d'un réseau de données

Country Status (3)

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EP (1) EP3686080B1 (fr)
DE (1) DE102019200777A1 (fr)
ES (1) ES2962845T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT524500A1 (de) * 2020-12-04 2022-06-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und System zum Betreiben einer Schienenverkehrsanlage

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218971A1 (de) * 2015-09-30 2017-03-30 Siemens Aktiengesellschaft Sicherungsverfahren für ein Gleisstreckennetz

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015218971A1 (de) * 2015-09-30 2017-03-30 Siemens Aktiengesellschaft Sicherungsverfahren für ein Gleisstreckennetz

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DEUTSCHE BAHN AG: "Designing a secure digital future with blockchain", DIGITAL SPIRIT - THE CUSTOMER MAGAZINE OF DB SYSTEM, 31 July 2017 (2017-07-31), XP055542725, Retrieved from the Internet <URL:https://digitalspirit.dbsystel.de/en/designing-a-secure-digital-future-with-blockchain/> [retrieved on 20190116] *
FERAS NASER: "REVIEW : THE POTENTIAL USE OF BLOCKCHAIN TECHNOLOGY IN RAILWAY APPLICATIONS : AN INTRODUCTION OF A MOBILITY AND SPEECH RECOGNITION PROTOTYPE", 2018 IEEE INTERNATIONAL CONFERENCE ON BIG DATA (BIG DATA), 1 December 2018 (2018-12-01), pages 4516 - 4524, XP055698022, ISBN: 978-1-5386-5035-6, DOI: 10.1109/BigData.2018.8622234 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT524500A1 (de) * 2020-12-04 2022-06-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und System zum Betreiben einer Schienenverkehrsanlage
AT524500B1 (de) * 2020-12-04 2023-02-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Verfahren und System zum Betreiben einer Schienenverkehrsanlage

Also Published As

Publication number Publication date
ES2962845T3 (es) 2024-03-21
EP3686080C0 (fr) 2023-08-16
DE102019200777A1 (de) 2020-07-23
EP3686080B1 (fr) 2023-08-16

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