Satellite navigation traffic control system for low traffic lines Actual status and future deployment in Romania Teodor Gradinariu UIC Burkhard Stadlmann Wels University, Austria Ioan Nodea RCCF, Romania
Why SATLOC? Strategic vision Low cost train control solution for regional and low traffic density lines the same basic functions and high safety target as ETCS Compatibility with ETCS interoperability on long term Highest flexibility of implementation to satisfy pragmatic, workable and best options for cost efficiency Application of new technologies for train localisation, train completeness, mobile radio communication with trains Improved testability and validation for easier approval of applications Expandability to new functions and services based on IT, UMTS-LTE and GNSS as integration and optimisation platforms
Non Interoperable Lines Example Romania: All red lines are non interoperable LTDL = 40% of the European Network
Economic Situation CAPEX / OPEX / Income LTDL require much lower expenditure for signalling Income Main Line Expenditure Main Line Renewal shall be possible Income LTDL Expenditure LTDL time
Which alternatives? ETCS (L2 or in the future L3) is too expensive: 150 200 k for OBU and 350-500 k /km + GSM-R. In the condition of a LTDL in Romania the return of investment (ROI*) is ~ 18-22 years The line will die because of the cost for invest & maintenance? Classical signaling suppliers: offered solutions, ROI reaches 8-10 years is on the critical path SATLOC: ROI* should be less than ~ 3 years Clear predictability of exploitation stability and quality Rapid resources for maintenance, expansion, enlargement of services, increase of quality, attractiveness for rail transport Migration within the life duration of the HW and SW *ROI Return of Investment
Innovation of SATLOC Application of technologic progress: IT, satellite navigation, radio-communication, automation 4 major innovation legs for reducing the cost an improve efficency: 1) Absolute location of trains with GNSS, route map and virtual balises 2) Train tracking function to supervise train running by the TCC for high safety target with lower SIL components 3) Use of UMTS-LTE high performance mobile radio in VPN-sec technology for data transport at marginal cost / cab radio on UMTS with IP address 4) Adaptation of operations to maximise the effect of technology and reduce cost (i.e. spring switches for crossing the trains, de-centralised shunting)
Innovation 1: Route map & Virtual Balises TCC RBC X Y Route map = high integrity file of (xy) coordinates, corresponding line-km and position of virtual balises Data exchange with ETCS messages in the ETCS language
Innovation 2: Close loop control for integrated train-tcc tracking Train sends every 5 s to the TCC Calculated train position Trafffic Control Center Checks plausibility of train position TCC checks the data and sends alarm or emergency stop if the train fails GNSS raw data High operational safety THR < 10-9 is achievable by this double control though OBC and TCC have lower SIL (e.g. SIL 2) Satloc Train SIL2 High safety and Low Cost
Innovation 3: IP-Transmission of ETCS Messages VPN based on unique APN & dedicated IP addresses SIM slot VODAFONE MODEM TRAIN Fix IP for each train172.10.10.01 Dial Nr 07200000..1 Each time attach the real train nr, but the dial remains fix for each motor coach IP-Transmission (packet switching) APN (Access Point Name): USERNAME: rccftrans.vodafone.ro IP 172.10.10.nn Dial:..nn Same APN The real train nr is relevant only for application and not for the VPN Use of commercial UMTS networks National roaming for high availability LOW COST: TCC Same APN for all participants in the VPN The - trains CAPEX have fixed & OPEX IP, attached to the MOROS of the motor coach. The selection of - NO MAINTENANCE trains is made by the train nr which is attached - GRANTED to each IP (and MIGRATION dial nr) when the train registers in the system.
Innovation 4: Operational Features Operational innovations: - Centralized train traffic and full speed supervision of trains in circulation based on MA - Local shunting with shunting authority (SH) to block the shunting area for intrusion of non-authorized trains - Shunting is supervised by the TCC Innovative infrastructure: trailable switches for crossing trains in stations All together: low cost with full operational capability and safety
Compatibility of SATLOC with ETCS SATLOC and ETCS? ETCS messages used for data radio transmission fully compatible IP-Communication instead of GSM-R ETCS Baseline 3.x (Change Request 0741) Use of Virtual Balises ETCS Baseline 3.x (work in progress) Use of route map not required for trains with original ETCS equipment Supervised Shunting by the RBC Change Request should be initiated Case 1: Satloc train on ETCS L2 infrastructure (e.g. last mile of the branch line) ETCS Balise Reader required Registering at the RBC (L2) Case 2: ETCS train on Satloc line ( interoperability ) Registering at the Satloc-TCC* (= RBC) Perhaps additional ETCS Balises required at critical points of the line Satloc TCC* GPS TCP/IP GPS TCP/IP Satloc train ETCS train Satloc line (no interlocking, no track occupancy detection) *TCC Traffic Control Center
Results @ date All specifications are concluded Technical design of the pilot line is finished and trains are equipped Live demonstration of train control, full speed supervision, traffic control and traffic management based on GNSS concrete technical solution based on industry supply Test specifications are elaborated and agreed with the user and the Romanian Safety Authority and Notified Body full flexibility for safe adapted use is available TCC (RBC) center in Zarnesti is operational The train TCC mobile data (VPN over UMTS) and voice (GPRS) connections are operational Real scale tests with running trains were successful Economic evaluation has been done with a proof of concept allowing an export on any railway line
Thanks for your attention! https://youtu.be/tpixf_o1ac4 gradinariu@uic.org burkhard.stadlmann@fh-wels.at