balise lifecheck: the preventive balise maintenance tool

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06/13/2022 Company Presentation CONFIDENTIAL 1 Balise Life Check The preventive balise maintenance solution 06/13/2022 Company Presentation CONFIDENTIAL 1

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Page 1: Balise LifeCheck: the preventive balise maintenance tool

05/01/2023 Company Presentation CONFIDENTIAL 105/01/2023 Company Presentation CONFIDENTIAL 1

Balise Life CheckThe preventive balise maintenance solution

Page 2: Balise LifeCheck: the preventive balise maintenance tool

05/01/2023 2

System Description & Features

Customers

System Components

Recording Process

EuroBalise Analysis

KVB Analysis

Options & Extensions

New Markets

Agenda

ERTMS Solutions’ BaliseLifeCheck CONFIDENTIAL

Page 3: Balise LifeCheck: the preventive balise maintenance tool

05/01/2023 3

The Balise Life Check in one slide

● System for automated measuring and qualification of ERTMS Balises

● Independent of any other system (EVC)

● Works with existing inductive balise systems:– ETCS Balises– TBL1+ , SCMT Balises (ERTMS packet 44)– KER Balises (KVB, EBICAB, RSDD).

● Designed for balises maintenance.

● Subset 85 lab-on-wheels

ERTMS Solutions’ BaliseLifeCheck CONFIDENTIAL

Page 4: Balise LifeCheck: the preventive balise maintenance tool

05/01/2023 ERTMS Solutions’ BaliseLifeCheck CONFIDENTIAL 4

Balise Life Check components

● A BTM transmitting/receiving antennaTransmits energy to the balise (TELEPOWERING) and receives signal from the it (UPLINK)

● An electronics control & acquisition unitGenerates TELEPOWERING, digitizes UPLINK signal

● A software applicationControls recording process, stores full UPLINK signal, analyzes and decodes balise emission, qualifies measurements, displays results

Page 5: Balise LifeCheck: the preventive balise maintenance tool

05/01/2023 ERTMS Solutions’ BaliseLifeCheck CONFIDENTIAL 5

Balise Life Check features

● Unattended & Automatic

● Generates ERTMS Subset 36 compliant TELEPOWERING signal

(27.095 MHz)

● Digitizes and stores the balise UPLINK signal at 400 M samples/sec

● Operational from 0 km/h to 500 km/h

● Display, export results

● Optionally: send alarms

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05/01/2023 ERTMS Solutions’ BaliseLifeCheck CONFIDENTIAL 6

Balise Life Check – Reference Documents

● Frequencies, Levels, Timings● Telegram Format● Coding/Decoding

● Performances● Tolerances

● Messages● Packets● Variables● Descriptions

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Balise Life Check features : measurements

● UPLINK Amplitude Jitter: -2,0 dB to 1,5 dB

● UPLINK Instantaneous frequencies: 3.951 MHz and 4.516 MHz

● UPLINK central frequencies and deviations : +/- 7%

● UPLINK Mean Data Rate: 564,48 bits/sec

● UPLINK Mean Time Interval Error

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Balise Life Check features : bits and telegrams

● Extract bits from UPLINK signal

● Rebuild telegrams from bits

● Verify polynomial checksum bits

● Verify telegram repetitions

● Mark strange/invalid bits/telegrams

● Decode Subset26 application messages

– NID_BG, N_PIG, Packets…

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Balise Life Check Customers

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Antenna

AirGap Unit

Control and Analysis Software

Balise Life Check components

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Balise Life Check Antena

● SIEMENS ANT-5A

● Off-the-shelf, proven in use

● Single cable

● Emits TELEPOWERING

● Captures UPLINK

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Balise Life Check - AirGap Unit

● Generate TELEPOWERING● Amplify TELEPOWERING● Auto-detect balise presence● Acquire UPLINK from antenna

● Separate UPLINK/TELEPOWERING● Digitize UPLINK (400 M samples/sec)● Transmit to PC

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Balise Life Check - Software Application

● Controls Air Gap unit

● Stores RAW digitized signals

● Performs analysis / measurements / qualification

● Computes numerical properties

● Displays numerical properties

● Displays analog curves

● Displays telegram contents

● Export to Excel

● Export to Google Earth

● Export to PDF

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BLC Recorder

Balise Life Check Software

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Balise Life Check Recorder

● Controls AirGap Unit● Stores acquisitions in DB

● On-the-fly analyzis

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05/01/2023 ERTMS Solutions’ BaliseLifeCheck CONFIDENTIAL 16

EuroBalise Analysis process

KER balises process

Balise Life Check Software

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EuroBalise Process – UpLink signal

● UPLINK signal acquired at 400 M samples/sec

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EuroBalise Process– UpLink Filtering

● Digital filtering removes train (traction/braking) EM noise

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EuroBalise Process – UpLink Filtering

● Balise telegram is FSK modulated with 2 frequencies: 3,951 MHz and 4,516 MHz

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EuroBalise Process – UpLink Amplitude Jitter

● Amplitude JitterSubset 36 : $5.2.2.2.5 Amplitude Jitter -1.5 dB .. 1.5 dB

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EuroBalise Process – Instananeous FSK Frequencies

● Instananeous Frequencies EvaluationSubset 36 : §5.2.2.2.2 Centre Frequency and Frequency DeviationThe magnetic field shall produce two frequencies that shall be used for frequency shift keying (FSK) of the Uplink data. The two frequencies shall nominally be 3.951 MHz for a logical 0 (fL) and nominally be 4.516 MHz for a logical 1 (fH)

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EuroBalise Process – Central Frequency

● Center FrequencySubset 36 §5.2.2.2.2 Centre Frequency and Frequency DeviationThe centre frequency shall be (fH+fL)/2 = 4.234 MHz

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EuroBalise Process – Frequency Deviation

● Frequency DeviationSubset 36 §5.2.2.2.2 Centre Frequency and Frequency DeviationThe frequency deviation shall be (fH-fL)/2 = 282.24 kHz

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EuroBalise Process – Mean Data Rate

● Mean Data RateSubset 36 : §5.2.2.2.3 Mean Data RateThe mean data rate is defined as 1500 divided by the length of 1500 consecutive data bits.The mean data rate shall be 564.48 kbit/s, with an overall tolerance of +/- 2.5%

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EuroBalise Process – MTIE

● Maximum Time Interval ErrorSubset 36 : §5.2.2.2.4 Data Rate Variation

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EuroBalise Process – Bits extraction

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EuroBalise Process – Bits Extraction

● Bits Extraction: 10 000 to 20 000 per balise

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EuroBalise Process – Telegram Extraction

● Green : Valid telegram● Yellow : Valid partial telegramSubset 36 : §4.3 Coding Requirements

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EuroBalise Process – Telegram decoding/qualification

● Support short (341 bits) and long (1024 bits) telegrams.● Fully implement Subset36 decoding.

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EuroBalise Process – Initial Partial Telegram

● Verify that transmission head and tail are partial valid telegrams.

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EuroBalise Process – Telegram Decoding

● Subset 26 – System Requirements Specifications● Chapter 7 – ERTMS/ETCS Language

Variables/Packets name

Binary values

Human Readable

Description from Subset 26

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EuroBalise Process – Properties (Signature)

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KVB Balises Analysis

Balise Life Check Software

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KER Balises – Bits Detection

● Bits Detection

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KER Balises – Telegrams Detection

● Telegrams detection

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Optional Modules & Extensions

Balise Life Check

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Balise Life Check – Big Metal Masses (option)

Big Metallic Masses on track can potentially trigger Alarms on BTM system caused by a strong BTM antenna detuning causing BTM Telepowering failures.

These alarms can trigger strong braking situations by EVC unless properly identified.

BMM optional functionality on BLC will help to produce a full cartography of antenna tuning (impedance) characteristics all along the track. Potential “Big Metallic Masses” areas can therefore be identified.

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Balise Life Check – Balise Positioning (extension)

● Compares Observations (on the field) with customer provided Reference (implementation plans)

● Uses High Precision GPS with integrated Inertial Movement Unit (IMU)

● Precision <= 2m

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Balise Life Check – Alarms Generator (extension)

● Detections– Out of Tolerance balises– Packet 254 (issue with LEU)– Missing Balise

● Notifications– SMS Alarm through public GMS– Summary upload through 3G – Summary upload through WiFi

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• New markets

Balise Life Check

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Applicability outside of Eurobalise markethttps://en.wikipedia.org/wiki/Train_protection_system

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Applicability outside of Eurobalise markethttps://en.wikipedia.org/wiki/Track_circuit

http://www.uic.org/cdrom/2008/11_wcrr2008/pdf/I.1.1.1.4.pdf

Today: Eurotunnel – TVM430, Mesea – TVM300Tomorrow: Ocvia – ITE, Crocodiles

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Turn BaliseLifeCheck upside down: check the onboard ETCS antenna and BTM = BTMLifeCheck

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Turn BaliseLifeCheck upside down: check the onboard ETCS antenna and BTM = BTMLifeCheck

- Checks if the onboard antenna and BTM are Subset-036 compliant- Alert in case of degradation. Replace before it breaks

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Thank you for your attention!

www.ertmssolutions.com