EP1669824B1 - Procédé et dispositif pour la sélection d'un numéro mode d'opération - Google Patents

Procédé et dispositif pour la sélection d'un numéro mode d'opération Download PDF

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Publication number
EP1669824B1
EP1669824B1 EP05110582A EP05110582A EP1669824B1 EP 1669824 B1 EP1669824 B1 EP 1669824B1 EP 05110582 A EP05110582 A EP 05110582A EP 05110582 A EP05110582 A EP 05110582A EP 1669824 B1 EP1669824 B1 EP 1669824B1
Authority
EP
European Patent Office
Prior art keywords
data record
mode
memory
front panel
data
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.)
Not-in-force
Application number
EP05110582A
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German (de)
English (en)
Other versions
EP1669824A1 (fr
Inventor
Rudolf Temming
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 AG
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1669824A1 publication Critical patent/EP1669824A1/fr
Application granted granted Critical
Publication of EP1669824B1 publication Critical patent/EP1669824B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L19/00—Arrangements for interlocking between points and signals by means of a single interlocking device, e.g. central control
    • B61L19/06—Interlocking devices having electrical operation

Definitions

  • the invention relates to a method for specifying a mode number according to the preamble of claim 1 and a related device according to the preamble of claim 2.
  • Safety-relevant railway operating processes relate in particular to the control of field elements, for example points and signals. This is done by interlocking elements, which also specify operating mode numbers, for example for normal operation or drive replacement. With the mode number, the processing software of the interlocking elements is initialized in a certain way, d. H. forced to a certain behavior. The operating mode number must therefore be specified reliably in terms of signaling.
  • the invention has for its object to provide a method and apparatus of the generic type, which are characterized by lower hardware costs, the mode selection meets the safety requirement level SIL 4 according to CENELEC.
  • the object is achieved according to the method with the characterizing features of claim 1 and according to the device with the characterizing features of claim 2.
  • a very high level of security with regard to the correctness of the operating mode number and thus the corresponding effects on the safety-relevant railway operating process is given.
  • Another advantage over the known mode connector with bridges is that in addition to the mode number additional data can be stored. In addition, only a minimal amount of hardware is required with a low volume of the memory module.
  • the data set consisting of operating mode number, user address, possibly further data and safety instructions, can be read into the non-volatile memory very easily and with very little effort via a serial I2C interface.
  • I2C bus is a very popular 2-wire bus and was designed specifically for communication between individual components within a device.
  • an I2C bus is also inserted between the memory and a front panel module of the processing software, wherein the front panel module checks the data record two-channel by means of the fuse attachment to data integrity.
  • the fuse attachment according to claim 3 as MD4 signature is formed.
  • the cryptographic MD4 function turns the input data set into one short value of fixed length, the hash value, converted.
  • variables use nonlinear transformations to manipulate the input data, that is, the data set to be checked for data integrity, thereby forming a unique hash value.
  • a good hash function there are hardly two records that have the same hash value.
  • small changes in the input data set with a good hash function greatly influence the hash value.
  • four variables are provided, which are included in the calculation of the hash value in three rounds.
  • a higher version of the MD algorithm for example MD5, can also be used.
  • Other methods of protection may be used, such as CRC16 or CRC32.
  • the fuse attachment is formed over the entire data record.
  • EEPROM electrically erasable programmable read only memory
  • This read-only memory is characterized by the fact that the programming process and also the deletion process are very easily possible by means of a computer or a peripheral device.
  • the memory itself is integrated according to claim 5 in a mode connector.
  • the mode plug is preferably labeled externally with the mode number and, if necessary, is inserted into a front panel module of a microcontroller containing the processing software.
  • Figure 1 shows an example of two mode connector 1 and 2, wherein the first mode connector 1 for normal operation and the second mode connector 2 are provided for drive replacement in the control of a switch assembly.
  • the mode connectors 1 and 2 are each provided with an EEPROM 3 (FIG. 2) for storing the associated mode number 4a, a subscriber number 4b, a subscriber address 5 and an MD4 signature 6 (FIG. 2). So that the mode connector 1 or 2 in a front panel module 7, which is connected to a micro-controller 8 ( Figure 2), can be easily inserted and removed, a handle 9 is formed on the mode connector 1 and 2 respectively.
  • the mode connector 1 and 2 is designed such that a contact-safe plugging into a socket 10 of the front panel module 7 is possible, the mode connector 1 and 2 is flush with the surface of the front panel module 7 and can not be solved by shocks. If no mode connector 1 or 2 is used, a dummy plate without any electrical functionality can be plugged. With the mode connector 1 and 2, the processing software is informed in the micro-controller 8, how to behave.
  • the mode connector 1 or 2 is clearly labeled with the number of the operating mode. This number is displayed flashing in a diagnostic display 11 on the front panel module 7.
  • the micro-controller 8 constructed in a fail-safe manner cyclically reads the data record from the mode connector 1 or 2 via the front panel module 7. On the front panel module 7, apart from the socket 10 and the diagnostic display 11, there are various Switches 12 and 13, a diagnostic socket 14 and status indicators 15 and a LED matrix 16 provided for process display.
  • FIG. 2 illustrates the data flow from the mode connector 1 or 2 via the front panel module 7 to the microcontroller 8.
  • the data record for the mode connector 1 or 2 is loaded via an I 2 C interface 17. It must be ensured that the data of the mode connector 1 or 2 can not be changed when plugged in.
  • the mode connector 1 or 2 is connected to a power supply 18 and a serial I2C bus 19.
  • the front panel module 7 reads the data record via the 12C bus 19 and checks it for two channels using the MD4 signature for data integrity. Thereafter, the mode number without MD4 signature is forwarded to the image memory of the dual-channel microcontroller 8.
  • an error is displayed on the diagnostic display 11 of the front panel module 7. Since the mode number 4a on the EEPROM 3 is protected by the MD4 signature 6, the data integrity can be monitored at a very high level of security in accordance with the safety requirement level SIL 4 according to CENELEC.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Storage Device Security (AREA)
  • Electrotherapy Devices (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Alarm Systems (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

Claims (5)

  1. Procédé pour prescrire un numéro de mode d'opération (4a) pour des processus d'exploitation ferroviaire déterminants pour la sécurité,
    caractérisé par le fait que l'on forme un bloc de données constitué du numéro de mode d'opération (4a), d'une adresse d'utilisateur (5) et éventuellement d'autres données, un supplément de sécurité étant formé sur l'ensemble du bloc de données et le bloc de données étant écrit conjointement avec le supplément de sécurité dans une mémoire non volatile par l'intermédiaire d'une interface I2C sérielle (17), et par le fait qu'un module frontal d'entrée (7) lit le bloc de données par l'intermédiaire d'un bus I2C (19) et vérifie l'intégrité des données sur deux canaux au moyen du supplément de sécurité.
  2. Dispositif pour la mise en oeuvre du procédé selon la revendication 1,
    caractérisé par le fait que
    il est prévu une mémoire non volatile avec une interface I2C sérielle (17), le numéro de mode d'opération (4a), une adresse d'utilisateur (5) et éventuellement d'autres données pouvant être écrites comme bloc de données avec un supplément de sécurité dans la mémoire par l'intermédiaire de l'interface I2C (17),
    la mémoire est reliée à un module frontal d'entrée (7) par l'intermédiaire d'un bus I2C (19), et
    le module frontal d'entrée (7) comporte des moyens pour la vérification sur deux canaux de l'intégrité des données du bloc de données au moyen du supplément de sécurité.
  3. Dispositif selon la revendication 2,
    caractérisé par le fait que le supplément de sécurité est conçu comme une signature MD4 (6) sur l'ensemble du bloc de données.
  4. Dispositif selon la revendication 2 ou 3,
    caractérisé par le fait que la mémoire est conçue comme une EEPROM (3).
  5. Dispositif selon l'une des revendications 2 à 4,
    caractérisé par le fait que la mémoire est intégrée dans un connecteur de mode d'opération (1, 2).
EP05110582A 2004-12-08 2005-11-10 Procédé et dispositif pour la sélection d'un numéro mode d'opération Not-in-force EP1669824B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004059717A DE102004059717A1 (de) 2004-12-08 2004-12-08 Verfahren und Vorrichtung zur Vorgabe einer Betriebsartennummer

Publications (2)

Publication Number Publication Date
EP1669824A1 EP1669824A1 (fr) 2006-06-14
EP1669824B1 true EP1669824B1 (fr) 2008-01-09

Family

ID=36096367

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05110582A Not-in-force EP1669824B1 (fr) 2004-12-08 2005-11-10 Procédé et dispositif pour la sélection d'un numéro mode d'opération

Country Status (3)

Country Link
EP (1) EP1669824B1 (fr)
AT (1) ATE383597T1 (fr)
DE (2) DE102004059717A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2687418B1 (fr) 2012-07-20 2015-09-09 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Signal de trajectoire à LED pour le transport ferroviaire et interface pour un tel signal de trajectoire à LED

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101397020B (zh) * 2008-11-12 2011-12-14 卡斯柯信号有限公司 智能采集驱动设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3935809A1 (de) * 1989-10-27 1991-05-02 Standard Elektrik Lorenz Ag Einrichtung zur uebertragung von steuerungsinformation auf ein schienenfahrzeug
US5485590A (en) * 1990-01-08 1996-01-16 Allen-Bradley Company, Inc. Programmable controller communication interface module which is configurable by a removable memory cartridge
DE4114921A1 (de) * 1991-05-07 1992-11-12 Ahlborn Mess Und Regelungstech Elektrische steckverbindung
US5659705A (en) * 1994-12-29 1997-08-19 Siemens Energy & Automation, Inc. Serial access memory cartridge for programmable logic controller
DE10040866A1 (de) * 2000-08-21 2002-03-07 Alcatel Sa Rechnersystem
DE50013436D1 (de) * 2000-12-30 2006-10-19 Siemens Schweiz Ag Verfahren zur Programmierung eines redundant ausgeführten Zielsystems mit Sicherheitsanforderung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2687418B1 (fr) 2012-07-20 2015-09-09 Pintsch Bamag Antriebs- und Verkehrstechnik GmbH Signal de trajectoire à LED pour le transport ferroviaire et interface pour un tel signal de trajectoire à LED

Also Published As

Publication number Publication date
ATE383597T1 (de) 2008-01-15
DE502005002486D1 (de) 2008-02-21
DE102004059717A1 (de) 2006-06-22
EP1669824A1 (fr) 2006-06-14

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