SIST EN 15437-1:2009
Railway applications - Axlebox condition monitoring - Interface and design requirements - Part 1: Track side equipment and rolling stock axlebox
Railway applications - Axlebox condition monitoring - Interface and design requirements - Part 1: Track side equipment and rolling stock axlebox
High speed TSI compliant trains are in certain cases fitted with on-board overheating axle bearing monitoring systems. In other cases they have to be monitored by trackside hot axle box detectors. Conventional TSI compliant trains are monitored by trackside hot axle box monitoring systems to detect abnormal axle bearing temperatures.
To ensure the compatibility of systems and the effective axle box condition monitoring of trains, this document specifies the requirements for:
a) control command;
b) operational and
c) vehicle.
And the parameters for:
d) the area of an axle box to be viewed by the trackside hot axle box detectors;
e) the type of alarms;
f) the minimum actions to be taken in the event of an alarm;
g) the essential equipment functions;
h) the limit temperature ranges for the alarms;
i) the minimum performance requirements such as accuracy of temperature measurement, periodicity of measurement, etc.;
j) the general vehicle requirements to ensure that, apart from the defined axle box area, no other part of a vehicle falsely activates the trackside HABD;
k) the general considerations for the location of trackside HABD along a route;
l) the minimum maintenance requirements for the trackside HABD such as a maintenance plan.
Bahnanwendungen - Zustandsüberwachung von Radsatzlagern - Schnittstellen und Gestaltungsanforderungen - Teil 1: Heißläuferortungsanlagen und Radsatzlagergehäusegestaltung
Dieser Teil der EN 15437 legt die Mindesteigenschaften für die Schnittstelle zwischen einer streckenseitigen Heißläuferortungsanlage und einem Schienenfahrzeug fest, welche den Europäischen Richtlinien für Interoperabilität entsprechen, um sicherzustellen, dass die funktionalen Mindestanforderungen dieser Schnitt¬stelle erreicht werden.
Die Mindestanforderungen der Schnittstelle gelten für:
a) Fahrzeuge, die der europäischen Standardspurweite 1 435 mm entsprechen;
b) Radsätze, die außengelagert sind;
ANMERKUNG Für die Konstruktion innengelagerter Radsätze sollte die Anforderungen der Anmerkung 2 in 5.2 beachtet werden.
c) Fahrzeuge mit einer Maximalgeschwindigkeit von bis zu 250 km/h einschließlich;
ANMERKUNG 1 Das heißt konventioneller Verkehr und Klasse 2 Hochgeschwindigkeitsfahrzeuge, wie in der TSI Fahrzeuge definiert.
ANMERKUNG 2 Interoperable Fahrzeuge, die für Geschwindigkeiten oberhalb 250 km/h konstruiert sind (Klasse 1 Hochgeschwindigkeitsfahrzeuge) müssen zur Überwachung der Radsatzlagerzustände, mit Onboard-Systemen ausge¬rüstet sein. Die Anforderungen für Onboard-Systeme werden im Teil 2 dieser Norm beschrieben, der sich gegenwärtig in der Entwicklung befindet.
ANMERKUNG 3 Interoperable Fahrzeuge, die für Geschwindigkeiten oberhalb 250 km/h konstruiert sind (Klasse 1 Hochgeschwindigkeitsfahrzeuge), liegen nicht im Anwendungsbereich dieses Teils der Norm. Wenn es jedoch erforderlich ist, dass Klasse 1 Hochgeschwindigkeitsfahrzeuge durch HOA überwacht werden müssen, sollte die Konstruktion den Anforderungen entsprechen, die in dieser Norm definiert sind, falls nicht bereits an anderer Stelle festgelegt.
d) streckenseitige HOA, die erforderlich sind, um konventionellen Verkehr und Klasse 2 Hochgeschwindig-keitsfahrzeuge zu überwachen.
Die Fahrzeuganforderungen für diese Schnittstelle sind im Abschnitt 5 beschrieben. Die HOA-Anforderungen für diese Schnittstelle sind im Abschnitt 6 angegeben.
(...)
Applications ferroviaires - Surveillance des boîtes d’essieux - Exigences lieés aux interfaces - Partie 1: Equipments des voies et conception des boîtes d’essieux pour materiel roulaut
Les trains a grande vitesse conformes aux STI sont dans certains cas dotés de systemes de surveillance embarqués de l’échauffement des roulements d’essieu. Dans d’autres cas cet échauffement doit etre contrôlé le long de la voie par des détecteurs de boîtes chaudes. Les trains classiques conformes aux STI sont contrôlés a partir de la voie par des détecteurs de boîtes chaudes qui surveillent les températures anormales des boîtes d’essieu.
Pour garantir la compatibilité des systemes et le contrôle efficace de l’état des boîtes d’essieu des trains, le présent document spécifie les exigences applicables :
a) au contrôle - commande ;
b) au fonctionnement et
c) au véhicule
ainsi que les parametres suivants :
d) la zone de la boîte d’essieu vue par les détecteurs de boîtes chaudes de voie ;
e) le type d’alarmes ;
f) les mesures minimales a prendre en cas d’alarme ;
g) les fonctions essentielles des équipements ;
h) les plages limites de température des alarmes ;
i) les exigences minimales de performance telles que l’exactitude des mesures de température, la périodicité des mesures, etc. ;
j) les exigences générales applicables au véhicule pour garantir qu’en dehors de la zone définie de la boîte d’essieu, aucune autre partie du véhicule n’activera a tort le DBC de voie ;
k) les considérations générales d’emplacement des DBC de voie le long d’un parcours ;
l) les exigences minimales de maintenance des DBC de voie et notamment leur plan de maintenance.
Železniške naprave - Kontrola ohišja ležajev kolesnih dvojic - Mesto meritev in zahteve pri projektiranju - 1. del: Progovna oprema in ohišja ležajev železniških vozil
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Železniške naprave - Kontrola ohišja ležajev kolesnih dvojic - Mesto meritev in zahteve pri projektiranju - 1. del: Progovna oprema in ohišja ležajev železniških vozilBahnanwendungen - Zustandsüberwachung von Radsatzlagern - Schnittstellen und Gestaltungsanforderungen - Teil 1: Heißläuferortungsanlagen und RadsatzlagergehäusegestaltungApplications ferroviaires - Surveillance des boîtes d’essieux - Exigences lieés aux interfaces - Partie 1: Equipments des voies et conception des boîtes d’essieux pour materiel roulautRailway applications - Axlebox condition monitoring - Interface and design requirements - Part 1: Track side equipment and rolling stock axlebox45.040Materiali in deli za železniško tehnikoMaterials and components for railway engineeringICS:Ta slovenski standard je istoveten z:EN 15437-1:2009SIST EN 15437-1:2009en,fr01-junij-2009SIST EN 15437-1:2009SLOVENSKI
STANDARD
SIST EN 15437-1:2009
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 15437-1March 2009ICS 45.060.01 English VersionRailway applications - Axlebox condition monitoring - Interfaceand design requirements - Part 1: Track side equipment androlling stock axleboxApplications ferroviaires - Surveillance des boîtes d'essieux- Exigences liées aux interfaces - Partie 1: Equipments desvoies et conception des boîtes d'essieux pour matérielroulantBahnanwendungen - Zustandsüberwachung vonRadsatzlagern - Schnittstellen undGestaltungsanforderungen - Teil 1:Heißläuferortungsanlagen undRadsatzlagergehäusegestaltungThis European Standard was approved by CEN on 21 February 2009.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre:
Avenue Marnix 17,
B-1000 Brussels© 2009 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15437-1:2009: ESIST EN 15437-1:2009
EN 15437-1:2009 (E) 2 Contents Page Foreword .3Introduction .41 Scope .52 Normative references .53 Terms and definitions .64 Symbols and abbreviations .95 Rolling Stock Requirements . 105.1 Target zone . 105.1.1 General . 105.1.2 Dimensions of the target area . 105.1.3 Position of the centre of the target area in the XY plane . 115.1.4 Visibility requirements for the target area . 115.2 Prohibitive zone . 115.2.1 General . 115.2.2 Dimensions of the prohibitive zone . 115.2.3 Position of the centre of the prohibitive zone in the XY plane . 125.3 Electromagnetic interference emissions . 135.4 Design drawings . 135.5 Protective finish . 136 HABD requirements for its interface with rolling stock . 136.1 General . 136.2 HABD temperature measuring zone . 136.3 HABD installation requirements . 157 HABD system requirements . 167.1 HABD functions . 167.2 HABD temperature alarms . 167.3 HABD general requirements . 17Annex A (informative) An example of an alternative HABD temperature measuring zone . 18Annex B (informative) Guidance for HABD installation . 20Annex C (informative)
Accuracy of the HABD’s calculated temperature of an axlebox . 21Annex D (informative) Examples of HABD system temperature alarm levels across Europe . 22Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EC Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the interoperability of the rail system within the Community . 23Bibliography . 25 SIST EN 15437-1:2009
EN 15437-1:2009 (E)
3 Foreword This document (EN 15437-1:2009) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EC Directive 96/48 and EC Directive 2001/16, as modified by EC Directive 2004/50. For relationship with EC Directive(s), see informative Annex ZA, which is an integral part of this document. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
SIST EN 15437-1:2009
EN 15437-1:2009 (E) 4
Introduction Failed axle bearings on rolling stock create a hazard to the safe operation of the railway. If an axle bearing fails whilst rolling stock is in-service there is the potential for a catastrophic event. A catastrophic event may result in fatalities, severe damage to rolling stock and/or the infrastructure and a risk that rolling stock may derail and/or a fire may develop. One indication that a bearing is about to fail is a rise in the heat generated by the bearing. Bearings that are about to fail may therefore be detected by monitoring their temperature to identify an unacceptable rise.
World-wide experience shows that one way of managing the risk is by installing trackside Hot AxleBox Detectors (HABDs) to monitor the in-service temperature of rolling stock axleboxes. The sensors of a trackside HABD measure the thermal radiation emitted from the axleboxes of in-service rolling stock. The level of thermal radiation is influenced by the emmissivity of the axlebox surface, which is influenced by the material, design, surface finish and operational conditions (dust, rain, etc). Even though operational conditions are continually changing the surface emmissivity of the axlebox, long term experience indicates that such changing conditions can be tolerated. This part of EN 15437 covers the monitoring of axlebox temperature by trackside HABD. It was developed by Working Group 35 "Hot Box Detection" of CEN Technical Committee 256 Railway Applications. It defines the minimum requirements for the interface between a trackside HABD and rolling stock, to ensure that the system works. It is important to note that Clause 1, Scope, sets out the minimum requirements for the interface. The requirements set out in this document are based on long term existing rules, practices and procedures developed and currently in use by European member railway undertaking’s (RUs) and infrastructure managers (IMs). The following principles have been applied: a) The railway system requires technical rules in order to ensure an acceptable interface between rolling stock and trackside HABD. b) In view of the increasing significance of international traffic, the standardisation of this interface is required.
c) It is of particular importance that the existing level of safety and reliability is not compromised. d) The Cartesian co-ordinate system is used to define dimensions and positions, that is X is longitudinal, Y is lateral and Z is vertical.
Some rolling stock, according to their performance or design, is fitted with on-board equipment to monitor axle bearings for potential overheating. However, in most cases, axle bearings continue to be monitored by trackside Hot Axle Bearing Detectors which is the subject of this standard.
Part 2 of EN 15437, which is currently being developed, covers on-board temperature monitoring of axle bearings.
Alternative technology is available, or being developed, to monitor the condition of axle bearings, using vibration sensors, thermocouples, etc. and may in the future be addressed by additional parts to this standard. SIST EN 15437-1:2009
EN 15437-1:2009 (E)
5 1 Scope This part of EN15437 defines the minimum characteristics for the interface between a trackside Hot Axlebox Detector (HABD) and Rolling Stock (RST) that comply with the European Directives for Interoperability to ensure that the minimum functional requirement of the interface is achieved.
The minimum requirements of the interface apply to: a) Rolling stock conforming to standard European railway gauge, that is 1435mm; b) Rolling stock axles fitted with outboard bearings; NOTE The design of rolling stock axles fitted with inboard bearings should respect the requirements set out in Note 2 of 5.2.
c) Rolling stock with a maximum operational speed of up to and including 250 km/h; NOTE 1 That is conventional rail and class 2 high speed rail rolling stock as defined in the rolling stock TSIs. NOTE 2 Interoperable rolling stock designed for speeds above 250km/h (class 1 high speed rolling stock) are mandated to have on-board equipment for axlebox condition monitoring. The requirements for on-board equipment are described in part 2 of this standard which is currently under development.
NOTE 3 Interoperable rolling stock designed for speeds above 250km/h (class 1 high speed rolling stock) are outside the scope of this Part of the standard. However, if class 1 high speed trains are required to be monitored by HABDs their target area should comply with the requirements specified in this standard, except where stated otherwise.
d) Trackside HABDs that are required to monitor conventional rail and class 2 high speed rail rolling stock.
The rolling stock requirements of the interface are described in Clause 5 and for the HABD requirements of the interface are described in Clause 6.
The scope of this part (part 1) of the standard does not include: Hot Wheel (Hot Disc) Detectors (HWDs). However, HWD are often installed in combination with trackside HABD to provide a dual monitoring system. This standard does not prevent the use of such a combination; how a HABD measures the temperature and identifies axle box position. This is part of an individual equipment design and not part of the functional requirements of this standard; operational requirements for acting on the information reported by the HABD system; maintenance requirements for HABD systems. 2 Normative references The following referenced documents are required for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 15273-3, Railway applications — Gauges — Part 3: Obstacles gauges EN 50121-3-1, Railway applications — Electromagnetic compatibility — Part 3-1: Rolling stock — Train and complete vehicle EN 50121-4, Railway applications — Electromagnetic compatibility — Part 4: Emission and immunity of the signalling and telecommunications apparatus SIST EN 15437-1:2009
EN 15437-1:2009 (E) 6 EN 50125-3, Railway applications — Environmental conditions for equipment — Part 3: Equipment for signalling and telecommunications EN 60950-1, Information technology equipment — Safety — Part 1: General requirements (IEC 60950- 1:2005, modified) ISO 14837-1, Mechanical vibration — Ground-borne noise and vibration arising from rail systems — Part 1: General guidance 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 axle bearing bearing or bearing assembly on a rail vehicle axle that transmits a proportion of the weight of the rail vehicle directly to the wheelset NOTE For the purpose of this definition bearings associated with the mounting of traction motors or traction drives are excluded. 3.1.1 inboard axle bearing axle bearings that are positioned on the wheelset axle between the wheels of the wheelset 3.1.2 outboard axle bearing axle bearings that are positioned on the wheelset axle ends outside of the space between the wheels of the wheelset 3.2
axlebox structure, including for example cartridge bearing adaptor, which houses, or is in contact with, the axle journal bearing and provides an interface with the bogie and/or suspension arrangement
3.3 hot axlebox detector (HABD) trackside system that includes: sensors that measure the thermal radiation emitted from a defined area on each axlebox of a passing rail vehicle; data processing that calculates a temperature for each axlebox from these measured data; data processing that identifies signs that an axlebox is (or axleboxes are) overheated; communication link to transmit and receive data 3.4 target zone defined area on the underside of an axlebox that is designed to have its temperature monitored by a HABD
3.5 target area plan view dimensions, that is in the XY plane, of the target zone 3.6 axlebox temperature temperature of the target zone as calculated by a HABD SIST EN 15437-1:2009
EN 15437-1:2009 (E)
7 3.7 differential temperature temperature difference between the two axlebox temperatures of a wheelset, or of a pair of wheels at the same position, as calculated by the HABD 3.8 temperature alarm indication that a calculated axlebox temperature has exceeded a preset temperature level 3.8.1 hot temperature alarm indication that a calculated axlebox temperature has exceeded a preset hot temperature level 3.8.2 warm temperature alarm indication that a calculated axlebox temperature has exceeded a preset warm temperature level
3.8.3 differential temperature alarm indication that a calculated differential temperature, between the left and right axleboxes of a wheelset, has exceeded a preset differential temperature level
3.8.4 train-side differential temperature alarm indication that a calculated differential temperature, between the temperature of the axlebox compared to the average temperature of all the axleboxes along its side of the train, has exceeded a preset train-side differential temperature level
3.9 prohibitive zone zone in which heat sources such as exhausts, which might influence the behaviour of a HABD, are excluded or thermally shielded 3.10 track coordinates track coordinates, Figure 1, are based on the right hand rule Cartesian coordinate system, where the positive X-axis (longitudinal) is along the track in the direction of travel, the Z-axis is vertically upwards and the origin is at the centre of the track and level with the top of the rail NOTE The Y-axis is the lateral axis. SIST EN 15437-1:2009
EN 15437-1:2009 (E) 8
Key 1 Centre of track Figure 1
Track Coordinates 3.11 rolling stock coordinates rolling stock coordinates, Figure 2, are based on the right hand rule Cartesian coordinate system, where the positive X-axis (longitudinal) is along the vehicle in the direction of travel, the Z-axis is vertically upwards and the origin is at the centre of a wheelset’s axle NOTE The Y-axis is the lateral axis.
Key 1 Centre of axle (or pair of wheels) Figure 2
Rolling Stock Coordinates SIST EN 15437-1:2009
EN 15437-1:2009 (E)
9 3.12 wheelset unit comprising: an axle, two wheels and their axle bearings, or a pair of independent wheels located at the same longitudinal position and their bearings 3.13 heat source part of the rolling stock that may have a temperature above the in-service running temperature of the underside of the axlebox, such as a hot load or an exhaust pipe 3.14 temperature measuring zone virtual cuboid shape fixed in size and space relative to the track in which an HABD system focuses to measure thermal radiation 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviated terms apply. CCS Control, Command and Signalling (as defined in the TSIs) HABD Hot AxleBox Detector HPZ vertical height in mm of the prohibitive zone HTMZ vertical height in mm of the temperature measuring zone IM Infrastructure Manager (as defined in the TSIs) LPZ longitudinal length in mm of the prohibitive zone
LTA longitudinal length in mm of the target area PZ Prohibited zone RST Rolling STock (as defined in TSI) RU Railway Undertaking (as defined in TSI) TA Target area TMZ Temperature measuring zone TSI Technical Specification for Interoperability WPZ lateral width in mm of the prohibitive zone
WTA lateral width in mm of the target area WTMZ lateral width in mm of the temperature measuring zone YPZ lateral position of the centre of the prohibitive zone YTA lateral position of the centre of the target area relative YTMZ1 lateral position of the inner side of the TMZ YTMZ2 lateral position of the outer side of the TMZ YTMZC1 lateral position of the inner side of a portion of the TMZ YTMZC2 lateral position of the outer side of a portion of the TMZ ZTMZ1 vertical position of the lower limit of the TMZ ZTMZ2 vertical position of the upper limit of the TMZ SIST EN 15437-1:2009
EN 15437-1:2009 (E) 10 5 Rolling Stock Requirements 5.1 Target zone 5.1.1 General The target zone is an area on the underside surface of an axlebox described by the intersection of the axlebox with a virtual cuboid. The horizontal cross sectional area of the virtual cuboid is congruent to the plan view area of the target zone in the XY plane, herein named the target area. The target area dimensions are LTA in the X-axis and WTA in the Y-axis using rolling stock coordinates. 5.1.2 Dimensions of the target area
The target area is set in space relative to the axle dimensions, and defines an area in which a HABD can focus to monitor the temperature of an axlebox. Figure 3 shows the position and minimum dimensions of the target area using rolling stock coordinates. Taking into account mechanical tolerances:
a) the target area shall have a lateral width, WTA, greater than or equal to 50 mm; b) the target area shall have a longitudinal length, LTA, greater than or equal to 100 mm. NOTE If class 1 high speed trains are monitored by HABDs their target area should have a lateral width, WTA, greater than or equal to 50 mm and a longitudinal length, LTA,
greater than or equal to 130 mm.
Key: 1 Centre line of vehicle 2 Centre line of target area 3 Centre line of axle Figure 3
Dimensions and position of the target area (TA) in the XY plane (viewed from below)
SIST EN 15437-1:2009
EN 15437-1:2009 (E)
11 5.1.3 Position of the centre of the target area in the XY plane a) YTA in the lateral direction (Y-axis), measured relative to the centre of the axle (or centre of a pair of wheels at the same position), where YTA shall be 1065 mm to 1095 mm; b) In the longitudinal direction (X-axis) it shall be congruent with the centre line of the axle. 5.1.4 Visibility requirements for the target area Rolling stock shall be designed with no obstruction between the target zone and the HABD that would impede or prevent the HABD from focusing within the target zone and thereby prevent a measurement of its thermal radiation.
If compliance with this requirement is not possible, rolling stock shall be fitted with an on-board axle bearing monitoring system1. NOTE The design of the rolling stock axlebox should aim to achieve a homogeneous temperature distribution within the target zone. 5.2 Prohibitive zone 5.2.1 General The prohibitive zone is defined by a rectangular area, which includes the target area, and is extended vertically to form a virtual cuboid. The dimensions of the cuboid are LPZ in the X-axis, WPZ in the Y-axis and HPZ in the Z-axis. Figure 4 shows a possible position of the target area in the XY plane of the prohibitive zone using rolling stock coordinates.
To minimize the opportunity for a HABD to calculate a temperature from a heat source that is not an axlebox, rolling stock shall be designed so that other heat sources, for example hot payload or exhaust, are not immediately adjacent to or directly above the target area position. To facilitate this no other heat source shall be located within the prohibitive zone.
NOTE 1 If it is possible/unavoidable, due to the design of the rolling stock, for a heat source other than that of an axlebox to be contained within the prohibitive zone, that heat source should be thermally shielded to prevent erroneous temperature calculations by a HABD measuring its thermal radiation. NOTE 2 The prohibitive zone should be maintained for all rolling stock, including for example rolling stock with inboard bearings. 5.2.2 Dimensions of the prohibitive zone The dimensions of the prohibitive zone’s cuboid, taking into account mechanical tolerances, shall be: a) lateral width, WPZ, greater than or equal to 100 mm; b) longitudinal length, LPZ, greater than or equal to 500 mm; c) vertical height, HPZ, shall start at a point immediately above the HABD in the XY plane and shall end at either the height of the target area, the height of a thermal shield or at a height that is level with the top of the vehicle in rolling stock coordinates.
1 See prEN15437-2 which is currently under development (April 2008)
SIST EN 15437-1:2009
EN 15437-1:2009 (E) 12 5.2.3 Position of the centre of the prohibitive zone in the XY plane a) YPZ in the lateral direction (Y-axis) measured relative to the centre of the axle (or centre of a pair of wheels at the same location), where YPZ shall be 1080 mm ± 5 mm; b) In the longitudinal direction (X-axis) it shall be congruent with the centre line of the axle ± 5 mm.
Key: 1 Centre line of vehicle 2 Centre line of target area 3 Centre line of axle 4 Target area 5 Prohibited zone for other heat sources Figure 4 Dimensions of the prohibitive zone (PZ) in the XY plane (viewed from below) showing a possible position of a target area SIST EN 15437-1:2009
EN 15437-1:2009 (E)
13 5.3 Electromagnetic interference emissions Rolling stock shall be designed to minimize electromagnetic interference emissions (EMC) in accordance with EN 50121-3-1. NOTE The EMC of the rolling stock should not affect the functional behaviour of the HABD system, for example by incorrectly triggering the HABD to indicate the presence of a wheelset when a wheelset is not present. 5.4 Design drawings The target zone shall be identified on the rolling stock axlebox design drawings. 5.5 Protective finish This standard does not specify gloss factor or colour for the protective finish of an axlebox.
NOTE 1 This standard intentionally does not specify the emmissivity requirements for the external finish of the axlebox surface or its target area. This is because the condition of the external finish of the axlebox surface is variable and uncontrollable, depending on the operational and environmental profiles. NOTE 2 This standard does not prevent the use of special paint or surface finish with high emmissivity properties. NOTE 3 This standard intentionally does not require performance testing of axleboxes in accordance with EN 12082 in order to establish any reference temperature or performance characteristics for a target area. 6 HABD requirements for its interface with rolling stock 6.1 General This chapter contains the requirements for the HABD side of the interface.
The HABD needs to take at least one discrete measurement of the thermal radiation from within the rolling stock’s minimum target area for each axlebox, as defined in Clause 5. To achieve this HABD need to take thermal measurements from within the temperature measuring zone (TMZ), as defined in this clause. 6.2 HABD temperature measuring zone The temperature measuring zone is an area fixed in space (relative to the track), in which a HABD shall focus to monitor the temperature of the axleboxes of passing rolling stock. Figure 5 shows the minimum dimensions and the position of the temperature measuring zone relative to the track coordinates in the YZ plane.
SIST EN 15437-1:2009
EN 15437-1:2009 (E) 14
Key: 1 Centre line of track 2 Top of rail Figure 5 Dimensions and position for the temperature measuring zone (TMZ)
SIST EN 15437-1:2009
EN 15437-1:2009 (E)
15 The dimensions of the temperature measuring zone taking into account mechanical tolerances shall be: a) Lateral width, WTMZ, greater than or equal to 80 mm, from YTMZ1 = 1040 mm to YTMZ2 = 1120 mm; b) Vertical height, HTMZ, shall be 240 mm, between ZTMZ1 = 260 mm and ZTMZ2 = 500 mm. The HABD shall scan within the temperature measuring zone; taking at least one discrete measurement from within the temperature measuring zone.
NOTE 1 In requiring that at least one discrete measurement within the temperature measuring zone is taken, this standard is not mandating a multi-look HABD. It does however provide the opportunity for a single sensor HABD system to monitor axlebox temperatures (see 6.2 Note 2). Until interoperability is complete across the Trans European Network (TEN) multi-look systems may enable trackside HABD to monitor the axlebox temperatures of all rolling stock including those which do not comply with this standard. NOTE 2 Under static conditions there is a central portion of the temperature measuring zone, that is from YTMZC1 = 1070 mm to YTMZC2 = 1090 mm (see shaded zone in Figure 5), which overlaps with the range of possible positions of the rolling stock’s target area (defined in Clause 5).
NOTE 3 The height of the temperature measuring zone is defined to accommodate the variation in height of the rolling stock target zone which is dependent on axlebox design and wheel diameter. NOTE 4 Interoperable rolling stock has a target area width of at least 50 mm which should lie within the temperature measuring zone. NOTE 5 Where an HABD focuses within an alternat
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