EP3448735A1 - Servereinrichtung betreibend eine software zur steuerung einer funktion eines schienengebundenen transportsicherungssystems - Google Patents
Servereinrichtung betreibend eine software zur steuerung einer funktion eines schienengebundenen transportsicherungssystemsInfo
- Publication number
- EP3448735A1 EP3448735A1 EP17720733.9A EP17720733A EP3448735A1 EP 3448735 A1 EP3448735 A1 EP 3448735A1 EP 17720733 A EP17720733 A EP 17720733A EP 3448735 A1 EP3448735 A1 EP 3448735A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- software
- server
- server device
- processes
- clusters
- 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
Links
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- 230000008569 process Effects 0.000 claims abstract description 131
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- 238000007405 data analysis Methods 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 9
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- 238000012360 testing method Methods 0.000 description 3
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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
-
- 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
- B61L27/30—Trackside multiple control systems, e.g. switch-over between different systems
-
- 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
- B61L2019/065—Interlocking devices having electrical operation with electronic means
Definitions
- Server device operating software for controlling a function of a rail-bound transport security system
- the invention relates to a server device operating software for controlling a function of a rail-mounted vehicle.
- the software operates at least two processes physically separate from each other, the results of which are compared with each other to perform the control of the function.
- Rail-bound transport safety systems in particular interlockings and train protection systems, are increasingly being automated by computers.
- RAMS requirements Reliability Availability Maintainability Safety
- a multi-channel processing and checking of safety-relevant components is therefore usually carried out, cf. for example M.
- Transport security systems are usually installed on individual devices, where the physical separation of processes can be ensured.
- the software and the device architecture are suitably coordinated with each other.
- processor core binding Processes whose results must be compared are assigned different processor cores (so-called “core binding"), which can ensure the physical separation of the processes.
- Virtualization of applications eliminates the need to deploy individual devices in many cases, and simplifies software development and integration.
- control system is for example in WO 20/126529 A1
- server clusters can no longer allocate individual software-driven processes to specific computing resources;
- the individual processes are essentially coincidentally one of
- the invention is based on the object, a server device
- the server device comprises at least two physically separate server clusters
- the software comprises at least two parts installed on different ones of the at least two server clusters so that the at least two processes are run on different ones of the at least two server clusters.
- the invention makes available for a software application on the one hand, the increased availability in server clusters, but on the other hand ensures that processes whose results to maintain operational safety must be compared with each other physically separate from each other.
- the server device used to operate the software is set up with at least two server clusters.
- Each of the server clusters of the server device comprises at least two individual servers that allow each other to migrate processes in the event of a single server failure (high availability cluster). This ensures high availability (operational readiness).
- the software is split into at least two parts, which are distributed to the at least two server clusters. One part of the software, and thus one of the processes, is permanently assigned to one of the server clusters.
- the processes whose results are compared to one another can be special test processes that run in addition to the control function of the software application (such as the calculation of
- Control function are used (such as the calculation of a track image).
- the processes to be compared carry out the same arithmetic operations in the same order to obtain the respective process result (similar processes). Similar process results generally indicate proper functioning of the server device; Unequal process results generally indicate a disorder.
- One of the processes whose results are to be compared is, for example, a master process, and a second process a slave process. If the result of the slave process from previously determined Result of the master process, the status of the software application is set to "not safe” (unsafe) (for example by the software part of the master process and / or the software part of the slave process and / or another software application). Part of the comparison process), and none of the results of the processes becomes more familiar, for example, in the case of an interlocking application, all affected signals can then be set to "halt" as a precautionary measure.
- Virtualization makes it possible to operate the software largely independent of local, available hardware.
- the software is an interlocking application. Due to the architecture of the server device according to the invention, a high
- HIS human machine interface for blocking systems
- MPT mobile possession terminal
- inventive server architecture particularly proven. As compared processes or their results here calculated track images can be used, which are displayed on operator terminals, in particular mobile operator terminals (such as tablet computers). Since the user temporarily
- Train protection applications is usually required to be guaranteed.
- Train protection applications may include, for example, emergency braking systems when traversing "Hal" signals.
- SIL2 safety integrity level 2
- Security level SIL2 is sufficient for many applications of rail-based transport security systems, and is compatible with the invention
- the Safety Integrity Level is in accordance with EN 61508 (especially EN 50128 and EN 50129) in the 4.4.2016 valid version.
- the software may be, for example, a HIS server application.
- SIL4 security integrity level 4
- the security level SIL4 can also be easily achieved with the server architecture according to the invention, whereby at the same time increased availability can be made possible.
- the Safety Integrity Level (SIL) is determined in accordance with EN 61508 (in particular EN 50 28 and EN 50129) in the version applicable on 4/4/2016.
- Server comprises three physically separate server clusters, that the software comprises at least three parts, the
- various of the server clusters are installed, so that the software operates three processes on different of the three server clusters, and that the results of the processes are evaluated as part of a 2-out-of-3 decision to control the function of the rail-based transport security system.
- the 2-out-of-3 decision it is possible, even in case of failure of a hardware (here an error on one of the server clusters) identify correct process results, which further increases availability.
- the Serveretnraum operates at least one additional software for controlling a further function of a rail-bound transport security system, and that the at least one further software is installed and operated on only one of the server cluster.
- the respective additional software is not decomposed into different parts that have to be installed on different server clusters; As a result, the operation of the other software is much easier.
- the other software is typically set up in accordance with SILO.
- one or more individual, further software applications are installed and operated on each of the server clusters.
- the at least one further software comprises one or more of the following
- Connection for mobile devices is formed.
- Fig. 1 is a schematic overview of the structure of a first
- Embodiment of a server device according to the invention with two server clusters;
- Fig. 2 is a schematic overview of the structure of a second
- Embodiment of a server device according to the invention with three server clusters.
- the present invention is based on the distribution of software control processes of a railbound transport protection system in a virtual operating level to different server clusters. As a result, the processes can be migrated to the individual servers of their server cluster for high availability in the event of a single outage
- H IS application within the scope of the invention
- the invention is described in more detail below using the example of the architecture of a HIS application, in particular with regard to the process distribution.
- the HIS (Human Machine Interface for Interlocking Systems) application is a SIL2 (Safety Integrity Level 2) application, especially developed and approved in accordance with the CENELEC EN 50128 standard. It essentially has the function as the user interface of an electronic interlocking system (ESTW). and can be designed for different markets or applications in different forms to each specifics
- HIS server which essentially serves to supply connected operator terminals with the calculated illuminations or states of the interlocking elements.
- HIS server which essentially serves to supply connected operator terminals with the calculated illuminations or states of the interlocking elements.
- the HIS architecture must be designed in such a way that the master process and a slave process run on different (hardware) processors This can be achieved by firmly binding processes to specific processor cores (Core Binding, Processor affinity) to ensure that a processor (or processor core) calculation error never fails to produce the same, incorrect result at master processor. and slave process (simultaneous double errors are excluded from the standard).
- server computers single servers
- server clusters which offer the advantages of a virtual operating level (high availability, redundancy) and at the same time guarantee a physical separation of processes.
- the master process can run on one server cluster and the slave process on the other server cluster.
- Server device 1 with two server clusters SC1, SC2 describe in more detail.
- the server device 1 is also called a virtual cluster (virtual cluster).
- the server device 1 here includes a first server cluster SC1 and a second server cluster SC2, which are constructed spatially separated from one another, which is illustrated in FIG. 1 by a physical boundary 2.
- spatially separated is meant that the server computers (SVR) of the two server clusters SC1, SC2 do not consist of the same hardware but are separate computers, so that the physical separation can be achieved both by setting up server clusters SC1, SC2 in the same rack one
- SVR server computers
- server clusters SC1, SC2 The limiting factor for the maximum distance between server clusters SC1, SC2 is the speed and latency of the intervening network to synchronize server clusters SC1, SC2.
- Network connections are shown in Fig. 1 by simple connecting lines.
- the first server cluster SC1 has at least two server computers
- SC1 In a server cluster SC1, SC2 run various virtual machines VM, in turn, the most diverse applications or their processes to run. This can be applications whose processes are distributed to the individual server clusters, but only their interaction gives a common functionality, as well as applications that run individually on a server cluster and independent of the other processes and applications provide functionality. Examples of applications and processes of the virtual machines VM are:
- the server device 1 has a cluster control 18 and a shared storage control 19 for both server clusters SC1, SC2.
- Each server cluster SC1, SC2 has its own high availability control (HA) 20a, 20b, with which the processes of the applications between the individual computers SRV-1-1, SRV-1-2 and SRV-2, respectively 1, SRV-2-2 can be moved within the respective server cluster SC1 or SC2, especially if a defect should occur in a single computer.
- HA high availability control
- each server cluster SC1, SC2 each has its own memory (Storage Vol 1, Storage Vol2) 21a, 21b, which can be used by the individual servers of the respective cluster SC1, SC2.
- the HIS server software 11 is divided into two parts: The HIS master process 11a is implemented on the first server cluster SC1, and the HIS slave process 11b (similar to the HIS master process 11a) is implemented on the second server cluster SC2.
- the HIS master process 11a will therefore always run on one of the individual servers SRV-1-1 or SRV-1-2 of the first server cluster SC1, but not on the
- the HIS slave process 11b always runs on one of the individual servers SRV-2-1 or SRV-2-2 of the second server cluster SC2, but not on the individual servers of the first server cluster SC1. This ensures that the HIS master process 11a and the HIS slave process 11b are always physically separated from each other. If the process results match, the matching process result can be trusted.
- Interlocking control software 12 physically separated from each other, and the lick-like processes 13a and 13b of the train control software 13 are physically separated from each other; at matching
- process results can be trusted to match the process result.
- the other software applications 14, 15, 16, 17 or their processes are in each case without a similar counterpart in the other server cluster SC1, SC2, so are only each simply run on one of the server cluster SC1, SC2. This is intended primarily for non-safety applications.
- FIG. 2 shows an embodiment of a server device (virtual cluster) 30 according to the invention, which has three server clusters SC1, SC2, SC3.
- the structure of the server device 30 with three server clusters SC1, SC2, SC3 largely corresponds to the structure with two server clusters of Fig. 1, so that only the essential differences are explained below.
- this matching result is considered correct. If the comparator detects three different results, the system is marked as "not safe.” For example, the interlocking application or the train protection application work according to this principle.
- a criterion for approval according to the EN 50128 standard in the 2oo3 systems is that the individual processes run on different hardware. This can be ensured by the inventive server device 30 (Virtual Cluster), which is based on three server clusters SC1, SC2, SC3 separated by physical boundaries 2. Nestled in each one virtual
- Machine VM for example, run the processes of the interlocking application distributed on the three server clusters and thus never use the same processors or processor cores.
- 2oo3 systems can also the
- the similar processes 31a, 31b, 31c or corresponding parts of the operating software 31 are distributed to the three server clusters SC1, SC2, SC3, so that the processes 31a, 31b, 31c never run on the same processor or of the same hardware, and thus their process results can not be equally wrong by a single hardware failure.
- Server clusters SC1, SC2, SC3 can run further, individual applications or other processes that are independent of the 2oo3 systems, here are the other software applications HMI A 34, App B 35, HMI C 36, App D 37, HMI E 38, App F 39.
- SRV-1-1 server computer single server
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hardware Redundancy (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Safety Devices In Control Systems (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17720733T PL3448735T3 (pl) | 2016-04-25 | 2017-04-24 | Urządzenie serwerowe obsługujące oprogramowanie do sterowania funkcją szynowego systemu bezpieczeństwa transportu |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016206988.8A DE102016206988A1 (de) | 2016-04-25 | 2016-04-25 | Servereinrichtung betreibend eine Software zur Steuerung einer Funktion eines schienengebundenen Transportsicherungssystems |
PCT/EP2017/059631 WO2017186629A1 (de) | 2016-04-25 | 2017-04-24 | Servereinrichtung betreibend eine software zur steuerung einer funktion eines schienengebundenen transportsicherungssystems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3448735A1 true EP3448735A1 (de) | 2019-03-06 |
EP3448735B1 EP3448735B1 (de) | 2020-04-29 |
Family
ID=58664667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17720733.9A Active EP3448735B1 (de) | 2016-04-25 | 2017-04-24 | Servereinrichtung betreibend eine software zur steuerung einer funktion eines schienengebundenen transportsicherungssystems |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3448735B1 (de) |
DE (1) | DE102016206988A1 (de) |
DK (1) | DK3448735T3 (de) |
ES (1) | ES2795015T3 (de) |
PL (1) | PL3448735T3 (de) |
PT (1) | PT3448735T (de) |
SA (1) | SA518400293B1 (de) |
WO (1) | WO2017186629A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109783103B (zh) * | 2019-03-19 | 2021-04-16 | 北京邮电大学 | 一种轨道交通列控系统人机界面实现方法和装置 |
EP4028301A4 (de) | 2019-09-12 | 2023-11-08 | Thales Canada Inc. | Überspannungsschutzvorrichtung |
DE102021209038A1 (de) * | 2021-08-18 | 2023-02-23 | Siemens Mobility GmbH | Verfahren zum automatischen Erkennen und Korrigieren von Speicherfehlern in einem sicheren mehrkanaligen Rechner |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6243825B1 (en) * | 1998-04-17 | 2001-06-05 | Microsoft Corporation | Method and system for transparently failing over a computer name in a server cluster |
DE19942981A1 (de) * | 1999-09-09 | 2001-03-22 | Alcatel Sa | Programmodul und Verfahren zum Erhöhen der Sicherheit eines softwaregesteuerten Systems |
US6944785B2 (en) * | 2001-07-23 | 2005-09-13 | Network Appliance, Inc. | High-availability cluster virtual server system |
EP2884392B1 (de) * | 2013-12-13 | 2018-08-15 | Thales | Fehlertolerante Rahmenarchitektur mit dreifacher Software-Redundanz |
US9718487B2 (en) | 2014-02-18 | 2017-08-01 | Nabil N. Ghaly | Method and apparatus for a train control system |
-
2016
- 2016-04-25 DE DE102016206988.8A patent/DE102016206988A1/de not_active Withdrawn
-
2017
- 2017-04-24 PT PT177207339T patent/PT3448735T/pt unknown
- 2017-04-24 DK DK17720733.9T patent/DK3448735T3/da active
- 2017-04-24 WO PCT/EP2017/059631 patent/WO2017186629A1/de active Application Filing
- 2017-04-24 EP EP17720733.9A patent/EP3448735B1/de active Active
- 2017-04-24 PL PL17720733T patent/PL3448735T3/pl unknown
- 2017-04-24 ES ES17720733T patent/ES2795015T3/es active Active
-
2018
- 2018-10-23 SA SA518400293A patent/SA518400293B1/ar unknown
Also Published As
Publication number | Publication date |
---|---|
DK3448735T3 (da) | 2020-06-22 |
WO2017186629A1 (de) | 2017-11-02 |
ES2795015T3 (es) | 2020-11-20 |
DE102016206988A1 (de) | 2017-10-26 |
SA518400293B1 (ar) | 2021-10-21 |
EP3448735B1 (de) | 2020-04-29 |
PL3448735T3 (pl) | 2020-11-02 |
PT3448735T (pt) | 2020-07-07 |
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