Www.thalesgroup.com/germany Thales Axle Counter The Challenges for a modern Train Detection System...

www.thalesgroup.com/germany

Thales Axle CounterThe Challenges for a modern

Train Detection System

Joachim JanleDirector Axle Counter Business

Axle Counter, Modern Challenges, 240412.PPT

2 /

THALES World-Wide market leader in Axle Counter Technology

More than 80 years experience with Axle Counters

Axle Counter – Past Challenges


3 /

System Evolution Introduction in the 1930ies: First Inductive Rail Contacts

BUT: Axle Counters not as reliable as Track Circuits

Change in the late 1960ies: Introduction of Electronic Axle Counters -> Drastic Improvement of reliability compared to Track Circuits

New Generation in the 1980ies: Introduction of Microprocessor technology -> Introduction of redundant system concepts (2oo3) and fault tolerant data transmission

1995: German Railways DB decides to go exclusively with Axle Counters for Train Detection for two reasons Economical: Application of Axle Counter much cheaper than Track Circuits

Operational: Much higher reliability than track circuits

2000: Introduction of CENELEC Compliant Systems Modular and Scalable Thales Multi-Section Axle Counter AzLM



4 /

What has in the past prevented the widespread application of Axle

Counters ?

Axle Counter – Future Challenges


5 /

Broken Rail Detection


Track Circuits can detect broken rails, Axle Counters can not….

Year '91 '92 '93 '94 '95 '96 '97 '98 '99 '00

No. of Cracked Rails - 61 52 41 65 38 39 45 22 22

No. of Broken Rails 2 1 0 1 1 2 0 0 4 0

No. of Detected by TC 0 0 0 1 0 1 0 0 2 0

Example: Statistic by MTRC (Hong Kong), June 27th, 2001

BUT: Can Track Circuits really detect Broken Rails (reliably) ?

SUMMARY: Only independent Track Inspection (e.g. Ultrasonic) can reliably detect

cracked and broken rail

-> Track Circuits can NOT !


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Track Circuit Clips


A Track Circuit Clip can block a Track Circuit, e.g. in case of an accident, Axle Counter can not….

BUT: What happens in block lines without train detection ?

Stopping a train to block an adjacent track is a safety risk by itself

SOLUTION: Train Radio is now widely available for driver communication

It is faster and safer than a Track Circuit Clip


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How are Axle Counters today contributing to Railways growth in safety

and operational efficiency ?

Axle Counter – Performance Challenges


8 /

Full Redundant Axle Counter Applications


Train detection reaching 100% Availability !

Background: Applications: Lines with extremely high train density, Operational

Bottleneck sections, Difficult site access in case of failure (e.g. tunnels)

Areas with high impact on railway operation

-> Driven by financial compensation for Non-Availability (delay Minutes)

Reference Projects: Lötschberg Tunnel Project, Switzerland

HSL South High speed Line, Netherlands

Gotthard Tunnel Project


9 / Axle Counter – Performance Challenges

Full Redundant Axle Counter Systems Highest availability of service critical railway lines

Proven and hardened solution

In service since 2005

The interface to the interlocking is evolving over time

HSL South, NL

Lötschberg, CH


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Reset Reset

Sectionstatus

ACE 2oo2ACE 2oo2

DP DP DP DP

ACE 2oo2ACE 2oo2

Sectionstatus

ACE 2oo2ACE 2oo2

DP DP DP DP

ACE 2oo2ACE 2oo2

Interlocking Interlocking

Full redundant 2 x 2oo2 configurations



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Classical Application Indoor 2oo2 ACE, Non-Redundant Outdoor

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ACESection 1

Redundancy concepts Indoor redundancy

Outdoor redundancy

Full redundancy: indoor and outdoor redundancy

InterlockingRelay or serial interface

Axle Counter – Redundancy Flexibility


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Indoor redundancy Indoor 2oo2 ACE, Non-Redundant Outdoor

Relay Output or Serial Output to Interlocking

Section evaluation in Separate Circuitry or in the Interlocking

Alternative: duplicated cable infrastructure

Interlocking

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ACE 1

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Section 1

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ACE 1

ACE 2


Section 1

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Outdoor redundancy Outdoor Redundant Concept 2 x Outdoor and 1 x Indoor


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ACE

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Interlocking




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Full Redundancy Full Redundant Concept 2 x (Indoor 2x2oo2 ACE + Outdoor).


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Section 1a

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ACE 1

ACE 2


Proven and hardened solution: In service since 2005.



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What is making Axle Counters even more effective ?

Axle Counter – Efficiency Challenges


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Text

REDUCTION of

OWNERSHIP COST

SEAMLESS INTEGRATION

intoIP NETWORKS

STANDARDIZED INTERFACE

to ELECTRONIC INTERLOCKING

NEW value adding AXLE

COUNTERAPPLICATIONS

Key features of the Thales Az LM V6-series



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Reduction of Ownership Cost: The new Rail Contact SK30K No disassembly for tamping and rail grinding

Mounting over sleeper in combination with large rail profiles (e.g. UIC60, S54, …)

Cable outlet on/beside the sleeper (protection of cables)

Electrically compatible with the Sk30H Rail Contact

Improved compatibility with track maintenance vehicles



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2-way Vehicle Zone

70mm

26...50 mm

Sk30H Sk30K

Reduction of Ownership Cost: The new Rail Contact Sk30K Improved Clearance at rail mounting



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Axle Counter EvaluatorAxle Counter Evaluator

Standardized serial IP interface to Electronic Interlocking

No Relays and Parallel I/O cards in the indoor unit required

No relay / opto coupler interfaces at the interlocking required

Available for 2oo2 and redundant 2oo3 system IP connection to

the Electronic Interlocking the Operation and Maintenance Centres

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Interlocking Interlocking

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Evaluator

IP network

InterlockingOperation & Maintenance

IP network IP network



Seamless integration into IP networks e.g. Ethernet right up to the Trackside Detection Points



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Seamless integration into IP networks ACE-ACE connection via IP network.

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IP network



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Serial Interface Reduction of Relay boards

Seamless integration into IP networks Drastic reduction in Hardware


Detection Points via IP network Reduction of Serial I/O

Boards


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Operation and Maintenance IP based diagnostic information

Remote Resetting

Axle Counter – Future Challenges

From individually maintained Stations…..

To full CTC controlled area supervision…..

Www.thalesgroup.com/germany Thales Axle Counter The Challenges for a modern Train Detection System...

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