State-of-the-art architectures State-of-the-art testing Jürgen Schölzel, Siemens AG, Mobility Division siemens.com
Not only operator control but also operational processes and headways and thus systems have become more complex Average number of controlled elements Mechanical interlockings Electromechanical interlockings Relay interlockings Electronic interlockings Decentralized wayside architecture 1200 CE 900 CE 600 CE 300 CE Source: AG MOSES; 2000/Siemens MM 2017 Page 2 CE = controlled elements
On-site testing is not possible digital twin is imperative Hanover as an example: when a train runs through Hanover Main Station, about 150 controlled elements have to be controlled and monitored. Significance 250,000 passengers per day 750 trains per day Possible track possessions max. 30 minutes Source: OpenRailMap.Org Electronic interlocking 5100 shunting and running routes Approx. 1000 controlled elements, including almost 600 signals of different design and function more than 250 point machines Page 3
Technology is not fault-free impact is minimized by tests Example: Hamburg-Altona electronic interlocking Independent safety shutdowns after commissioning in 1995 Two-day fault analysis and a two-day failure of the interlocking Stack overflow in the BAR 16 computer (memory too small) In the same year, Siemens starts to set up its System Test Center. Source: http://bahnprojekt-hamburg-altona.de/baumassnahmen/ Page 4
Availability and functioning are ensured by System Test Center s capability System tests at System Test Center Interlocking configuration capable of being activated for all electronic interlockings installed in Germany within 30 minutes Computer-aided real-time simulation of outdoor equipment Simulation of operator actions and operating scenarios Hardware and software, including system data Mapping of complex network structures Availability testing whenever first-time commissioning is performed on site Dynamic interaction between hardware and software System dynamics simulation of: automated train runs > 1000/h automated operator actions > 5000/h status messages approx. 60,000/h System behavior under load Failure behavior Page 5
Test requirements are determined by technical-operational developments of ETCS ETCS Level 2 without signals High-level complexity in overall system Usage of state-of-the-art interlocking technology and ETCS Level 2 without signals First-time usage of RBCs in Germany Interaction between ETCS-equipped line and vehicle Number of tests Number of manufacturers or subsystems Source: DB Netz AG ; VDE 8 project; Olaf Drescher; 03/2017 Test system suitable for acceptance Automation is imperative Page 6
Use of EuroSuiteDAT is basis for automatic tests in complex projects (e.g. VDE 8 project) Architecture/properties Usage of test system for overall system integration data validation performance tests Acceptance test (recognized by Federal German Railways Office (EBA)) Automatic tests (manual tests possible) Automatic regression tests Simulation of new operating procedures (e.g. ETCS L1 LS) Page 7
Complex test systems are implemented in EuroSuiteDAT EuroSuiteDat enables integration tests to be performed for the RBC-interlocking and RBC-RBC interfaces. EuroSuiteDat enables interoperability tests with the on-board units from different manufacturers. Real or simulated on-board units from different manufacturers are possible. Page 8
EuroSuiteDAT Video Start of video Page 9
Effort for tests in complex systems can be reduced using new test methods and systems Effort in % 100 80 60 40 20 0 Manual test 100 100 100 100 Test 1 Re-test 1 Re-test 2 Re-test 3 Hours Effort in % 100 80 60 40 20 0 100 Automatic test 20 20 20 Test 1 Re-test 1 Re-test 2 Re-test 3 Hours Page 10
High-level requirements are imposed on test sequences by development of NeuPro NeuPro Digitization in signaling and control systems No changes to operating rules no changes to test cases State-of-the-art outdoor elements include simulation Interaction of components from different manufacturers system or integration test Performance limits of networks Test cases from Simis D transferable Page 11
NeuPro results in new challenges in testing due to greater complexity and new interfaces The requirement for complete component replaceability calls for a new approach to simulation and testing. Function test Number of tests System test Safety cases Compatibility Number of manufacturers or subsystems Page 12
Summary Automatic testing has been realized. Siemens Mobility has: extensive know-how many years of global experience necessary systems and tools We are facing new challenges which can only be solved in cooperation between industry, railways and approval authorities: network performance simulation of hacker attacks/it security clearly defined responsibilities Page 13
Contact Jürgen Schölzel Head of Rail Automation Domestic and Operations Mobility Management Ackerstraße 22 38126 Braunschweig Germany Mobile: +49 173 6561534 E-mail: juergen.schoelzel@siemens.com siemens.com Page 14