CLC TS 50238-3-2013 Railway applications - Compatibility between rolling stock and train detection systems - Part 3 Compatibility with axle counters.pdf

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1、BSI Standards PublicationRailway applications Compatibility between rolling stock and train detection systemsPart 3: Compatibility with axle countersPD CLC/TS 50238-3:2013National forewordThis Published Document is the UK implementation of CLC/TS 50238-3:2013. It supersedes DD CLC/TS 50238-3:2010, w

2、hichwill be withdrawn on 31 December 2016.The UK participation in its preparation was entrusted by Technical Com-mittee GEL/9, Railway Electrotechnical Applications, to SubcommitteeGEL/9/1, Railway Electrotechnical Applications - Signalling and communications.A list of organizations represented on t

3、his committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2013Published by BSI Standards Limited 2013ISBN 978 0 580 76384 7ICS 2

4、9.280; 45.060.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This Published Document was published under the authority of theStandards Policy and Strategy Committee on 30 November 2013.Amendments/corrigenda issued since publicationDate Text affectedPUBLISHED DOCUME

5、NTPD CLC/TS 50238-3:2013TECHNICAL SPECIFICATION CLC/TS 50238-3 SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION October 2013 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Man

6、agement Centre: Avenue Marnix 17, B - 1000 Brussels 2013 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. CLC/TS 50238-3:2013 E ICS 29.280; 45.060.10 Supersedes CLC/TS 50238-3:2010 + corr. Sep.2010 English version Railway applications

7、 - Compatibility between rolling stock and train detection systems - Part 3: Compatibility with axle counters Applications ferroviaires - Compatibilit entre le matriel roulant et les systmes de dtection des trains - Partie 3: Compatibilit avec les compteurs dessieux Bahnanwendungen - Kompatibilitt z

8、wischen Fahrzeugen und Gleisfreimeldesysteme - Teil 3: Kompatibilitt mit Achszhler This Technical Specification was approved by CENELEC on 2013-10-14. CENELEC members are required to announce the existence of this TS in the same way as for an EN and to make the TS available promptly at national leve

9、l in an appropriate form. It is permissible to keep conflicting national standards in force. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germ

10、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CLC/TS 50238-3:2013CLC/TS 50238-3:2013 - 2 - Contents Page Foreword . 3 Introduct

11、ion . 4 1 Scope 5 2 Normative references 5 3 Terms, definitions and abbreviations 5 3.1 Terms and definitions . 5 3.2 Abbreviations . 6 4 General aspects . 6 4.1 Interference mechanism . 6 4.1.1 General . 6 4.1.2 Axle counter detector 6 4.1.3 Susceptibility of the detector on the rail . 7 4.1.4 Sour

12、ces of interference fields 7 4.2 Availability margin . 8 4.3 Specific axle counter parameters 8 5 Compatibility requirements 8 5.1 RST emission limits based on the frequency management of the TSI CCS Interfaces Document (ERA/ERTMS/033281) . 8 5.2 RST Emission limits for RST compatibility tests for i

13、ndividual axle counters on non-interoperable lines . 9 5.2.1 General . 9 5.2.2 Short duration interference limits 9 5.2.3 Mitigating arguments when limits are exceeded . 9 Annex A (normative) Rolling stock emission limits 10 A.1 Emissions limits and evaluation parameters (narrow band) 10 A.2 Weighti

14、ng of short duration interference 11 Bibliography 12 Figure Figure 1 Axle counter detector, schematic diagram 7 Tables Table A.1 Emission limits and evaluation parameters (narrow band) . 10 Table A.2 Weighting of short duration interference (Tintaccording to Table A.1) 11 PD CLC/TS 50238-3:2013- 3 -

15、 CLC/TS 50238-3:2013 Foreword This document (CLC/TS 50238-3:2013) has been prepared by CLC/SC 9XA “Communication, signalling and processing systems“, of Technical Committee CLC/TC 9X “Electrical and electronic applications for railways“. This document supersedes CLC/TS 50238-3:2010. CLC/TS 50238-3:2

16、013 includes the following significant technical changes with respect to CLC/TS 50238-3:2010: this new edition represents a major technical change from the previous edition: the entire document has been changed, from the scope to the last clause, to take into account CLC/TC 9X decision 47-13 “TC9X i

17、nstructs WGA4-2 Convenor to remove sections about the procedure of testing of rolling stock from the draft TS 50238-3 (project 23571), considering SC9XA Decision 38/2“; Annexes B to D have been deleted. This Technical Specification is Part 3 in the following series: EN 50238, Railway applications Co

18、mpatibility between rolling stock and train detection systems; CLC/TS 50238-2, Railway applications Compatibility between rolling stock and train detection systems Part 2: Compatibility with track circuits; CLC/TS 50238-3, Railway applications Compatibility between rolling stock and train detection

19、systems Part 3: Compatibility with axle counters. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. PD CLC/TS 50238-3:2013CLC/TS 50238-3

20、:2013 - 4 - Introduction This Technical Specification defines the interference limits and evaluation criteria for electromagnetic compatibility between rolling stock and axle counter detectors. The limits have been defined on the basis of a test specification described in prEN 50617-2:2013 2 (cf. CL

21、C/SC9XA/Sec0779/CD) (laboratory tests). This Technical Specification defines a set of interference limits for magnetic fields resulting from both rail current and equipment on board the vehicles, evaluation criteria to verify rolling stock emissions and demonstrate compatibility with the interferenc

22、e limits for magnetic fields, traceability of requirements (type of axle counter detectors considered for the limits). In the relevant frequency range of the axle counter detectors, the magnetic field is dominant and only this type of field is considered. Experience has shown that the effects of ele

23、ctric fields are insignificant and therefore not considered. PD CLC/TS 50238-3:2013- 5 - CLC/TS 50238-3:2013 1 Scope For the purpose of demonstrating compatibility between rolling stock and axle counter detectors, this Technical Specification defines the interference limits and evaluation methods to

24、 verify rolling stock emissions. Wheel sensors and crossing loops are not covered by this Technical Specification. This Technical Specification gives recommended individual limits to be applied to establish compatibility between RST and all selected types of axle counter detectors, including any cov

25、ered by national standards. The list of selected types of axle counters and their limits for compatibility are drawn on the basis of established performance criteria. It is expected that the trend for newly signalled interoperable lines will be fitted with types that meet the compatibility limits pu

26、blished in the TSI CCS Interfaces Document (ERA/ERTMS/033281). To ensure adequate operational availability, it is essential that the rolling stock complies with the defined limits; otherwise, the established availability of the valid output function of axle counter detectors may be compromised. NOTE

27、 The influences from metal parts or inductively coupled resonant circuits on the vehicle, eddy current brakes or magnetic brakes, are not covered by this Technical Specification but are considered on the basis of national technical specifications. 2 Normative references The following documents, in w

28、hole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50238:2003, Railway applications

29、Compatibility between rolling stock and train detection systems ERA/ERTMS/033281, Interfaces between control-command and signalling trackside and other subsystems, version 1.0, published on 2012-02-23 3 Terms, definitions and abbreviations For the purposes of this document, the terms, definitions an

30、d abbreviations given in EN 50238:2003 and the following apply. 3.1 Terms and definitions 3.1.1 axle counter detector detector consisting of the axle counter sensor and of the detection circuit, which includes in general filters and rectifiers 3.1.2 axle counter sensor sensor head mounted in the tra

31、ck 3.1.3 axle counter system whole system including axle counter sensor, axle counter detector and the evaluation unit PD CLC/TS 50238-3:2013CLC/TS 50238-3:2013 - 6 - 3.1.4 integration time time constant of an axle counter detector indicating the range of time in which the immunity of the regarded a

32、xle counter detector to sinusoidal in band disturbances rises with shorter time duration of these disturbances (short term interference) Note 1 to entry: Integration time is one parameter for evaluation of the measurement results of compatibility tests of vehicles (TSI CCS Interfaces Document (ERA/E

33、RTMS/033281). It is defined as the window size over which the root mean square (rms) of the output of the band-pass filter is calculated. 3.1.5 in band the whole frequency range (centre frequency plus or minus tolerance range) where a single axle counter works Note 1 to entry: In relation with the f

34、requency management of TSI CCS Interfaces Document (ERA/ERTMS/033281), it defines the area of the single bands (band 1, band 2, band 3). 3.2 Abbreviations CCS Control-Command and Signalling FM Frequency Management rms root mean square RST Rolling Stock TintIntegration Time TSI Technical Specificatio

35、n for Interoperability 4 General aspects 4.1 Interference mechanism 4.1.1 General Axle counter detectors can be influenced in different ways, e.g. by magnetic fields or metallic parts in the vicinity of wheels and bogies and thus close to the sensors. The influence of magnetic fields in the range of

36、 the working frequency of the individual axle counters is dominant. In addition, the duration and/or repetition rate of interference and the magnetic field strength are also relevant. 4.1.2 Axle counter detector The compatibility limits in this Technical Specification are based on the immunity of ax

37、le counter detectors and are specified only for the axle counter detector comprising the sensor on the rail and the detection circuits in the trackside equipment as shown in Figure 1. PD CLC/TS 50238-3:2013- 7 - CLC/TS 50238-3:2013 Figure 1 Axle counter detector, schematic diagram Axle counter detec

38、tors use various additional filter techniques and algorithms that reject interference pulses in order to maximise reliability while maintaining safety. EXAMPLES non-linear pulse duration filters which reject wheel pulses of a duration less than the minimum wheel pulse from a vehicle; rejection of wh

39、eel pulses in one channel if the axle counter is already in an occupied status. 4.1.3 Susceptibility of the detector on the rail The precise area of susceptibility is product specific, and defined by manufacturers of individual products. The position of the measurement antenna has been chosen to tak

40、e into account the relevant sensors. The immunity (susceptibility limit) is defined as the magnetic field that can generate interference pulses or corrupt the wheel pulses of one or more channels of the axle counter detector. The magnetic coupling between the transmission and reception units of the

41、axle counter sensor depends among other things on the rail type. Large rail profiles like UIC 60 profiles, which provide higher attenuation of the receiver voltage, are therefore more critical with respect to the susceptibility. 4.1.4 Sources of interference fields The following sources of interfere

42、nce are considered for immunity: electrical equipment on the vehicle and magnetically coupled to the axle counter sensor through the air gap (hence referred to as magnetic fields); rail currents in the susceptibility range of operation of the axle counter sensor (hence referred to as rail current fi

43、elds). The interference fields from the two above defined sources are superimposed on the axle counter sensor whereby the vector of rail current fields has a predictable direction and the vector of magnetic fields has an unpredictable direction, because it is dependent on the source on the vehicle a

44、nd on the type of rail. Sensorson rail Control circuits Linear analogue or digital filters Pulse detection circuits Transmission circuits (Modulation or coding; correction algorithms) Axle counter detector Channel 1 Channel 2 Transmission to evaluator unit Pulse or count transmission circuits Detect

45、ion circuits PD CLC/TS 50238-3:2013CLC/TS 50238-3:2013 - 8 - 4.2 Availability margin Axle counter detectors are assumed to fail right side if excessive interference leads to a malfunction. A safety margin is therefore not required, but a margin is required to meet the performance requirements with r

46、egard to reliability of counting. If the interference limit of the axle counter detector is exceeded and a resulting spurious wheel pulse is generated, this may or may not lead to a failure of the axle counter system. A margin of 9 dB accounts for the following factors: 6 dB signal to noise ratio to

47、 meet the probability requirements for miscount within the established equipment operating tolerances; 3 dB accounting for uncertainty of measuring chain, positioning of the measurement antenna, overlapping effects (analysing methods), other environmental effects affecting interference (rain, temper

48、ature, etc.). 4.3 Specific axle counter parameters The interference susceptibility of axle counter detectors depends, among other things, on the amplitude and the duration, for which the interference magnetic field is present. For continuous interference, the limits are lower than for short duration

49、 (transient) interference. 5 Compatibility requirements 5.1 RST emission limits based on the frequency management of the TSI CCS Interfaces Document (ERA/ERTMS/033281) For future developments of rolling stock and axle counter detectors with the aim to decrease the development risk and to minimise the homologation effort for both rolling stock and axle counter detectors, a mandatory European frequency management is specified in the TSI CCS Interfaces Document (ERA/ERTMS/033281). The FM also defines out-o