Satellite navigation traffic control system for low ...Satellite navigation traffic control system for low traffic lines Actual status and future deployment in Romania Teodor Gradinariu

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

time

Income LTDL

Income Main Line

Expenditure Main Line

LTDL require much lower expenditure for signalling

Expenditure LTDL

Renewal shall be possible

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

X Y

Data exchange with ETCS messages in the ETCS language

Route map = high integrity file of

(xy) coordinates, corresponding line-km and position of virtual

balises

TCC RBC

Innovation 2: Close loop control for integrated train-TCC tracking

Train sends every 5 s to the TCC • Calculated train

position • 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)

High safety and Low Cost

Trafffic Control Center

Checks plausibility of train position

Satloc Train – SIL2

TCC checks the data and sends alarm or emergency stop if the train fails

Innovation 3: IP-Transmission of ETCS Messages

APN (Access Point Name):

USERNAME: rccftrans.vodafone.ro

PASSWRD: vodafone

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 172.10.10.nn

Dial: …..nn

Same APN

The real train nr is

relevant only for

application and not

for the VPN

VPN based on unique APN

& dedicated IP addresses

VODAFONE

MODEM

Same APN for all participants in the VPN

The trains have fixed IP, attached to the

MOROS of the motor coach. The selection of

trains is made by the train nr which is

attached to each IP (and dial nr) when the

train registers in the system.

The link VODAFONE – TCC is on UMTS,

1900 MHz broadband.

TRAIN

TCC

SIM slot

LOW COST: - CAPEX & OPEX - NO MAINTENANCE - GRANTED MIGRATION

IP-Transmission (packet switching)

Use of commercial UMTS networks

National roaming for high availability

Innovation 4: Operational Features

Innovative infrastructure: trailable switches for crossing trains in stations

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

All together: low cost with full operational capability and safety

SATLOC and ETCS?• Compatibility of SATLOC with 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

*TCC – Traffic Control Center

Satloc line (no interlocking, no track occupancy detection)

Satloc TCC*

ETCS train Satloc train

GPS GPS

TCP/IP TCP/IP

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

[email protected] [email protected]