SIST EN 13848-4:2012
(Main)Railway applications - Track - Track geometry quality - Part 4: Measuring systems - Manual and lightweight devices
Railway applications - Track - Track geometry quality - Part 4: Measuring systems - Manual and lightweight devices
This part of the European Standard specifies the minimum requirements that shall be met by measuring systems fitted on track recording trolleys and manually operated devices to give an evaluation of track geometry quality when using one or more of the parameters described in EN 13848-1. It sets out the acceptable differences from EN 13848-1 when using track recording trolleys and manually operated devices to measure track geometry.
It applies to all track geometry measuring systems fitted to track recording trolleys and manually operated devices after the date of implementation of this standard.
Bahnanwendungen- Oberbau - Qualität der Gleisgeometrie - Teil 4: Messsysteme - Handgeführte und leichte Vorrichtungen
Dieser Teil der Europäischen Norm legt die Mindestanforderungen für Messsysteme, angebracht an fahrbaren
Kleinmessgeräten und Handmessgeräten, für die Bewertung der Gleisgeometriequalität nach den Parametern
nach EN 13848-1 fest. Die noch akzeptablen Unterschiede zu EN 13848-1 bei der Verwendung von fahrbaren
Kleinmessgeräten und Handmessgeräten für die Messung der Gleisgeometrie werden dargestellt.
Dieser Teil gilt für alle Gleisgeometriemesssysteme, angebracht an fahrbaren Kleinmessgeräten und
Handmessgeräten, nach der Umsetzung dieser Norm.
Applications ferroviaires - Voie - Qualité géométrique de la voie - Partie 4: Systèmes de mesure - Dispositifs manuels et de faible poids
La présente partie de la Norme européenne spécifie les exigences minimales devant être satisfaites par les systèmes de mesure de la voie installés sur des chariots d’enregistrement et des dispositifs manuels évaluant la qualité de la géométrie de la voie à partir d’un ou plusieurs des paramètres décrits dans l’EN 13848-1 :2003+A1 :2008. Elle expose les différences acceptables par rapport à l’EN 13848-1 :2003+A1 :2008 lorsque la géométrie de la voie est mesurée au moyen de chariots d’enregistrement et de dispositifs manuels. Elle s'applique à tous les systèmes de mesure de géométrie de la voie installés sur des chariots d’enregistrement et des dispositifs manuels après la date d’entrée en vigueur de la présente Norme.
Železniške naprave - Zgornji ustroj - Kakovost tirne geometrije - 4. del: Merilni sistemi - Ročne in lahke naprave
V tem delu evropskega standarda so določene minimalne zahteve za merilne sisteme, nameščene na vozičke za merjenje tirne geometrije in ročne naprave, ki se jih uporablja za vrednotenje kakovosti tirne geometrije pri merjenju enega parametra iz standarda EN 13848- 1:2003+A1:2008 ali več. Določa sprejemljive razlike iz standarda EN 13848-1:2003+A1:2008 pri merjenju tirne geometrije z vozički za merjenje tirne geometrije in ročnimi napravami. Uporablja se za vse sisteme za merjenje tirne geometrije, ki so nameščeni na vozičke za merjenje tirne geometrije in ročno vodene naprave po datumu začetka izvajanja tega standarda.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bahnanwendungen- Oberbau - Qualität der Gleisgeometrie - Teil 4: Messsysteme - Handgeführte und leichte VorrichtungenApplications ferroviaires - Voie - Qualité géométrique de la voie - Partie 4: Systèmes de mesure - Dispositifs manuels et de faible poidsRailway applications - Track - Track geometry quality - Part 4: Measuring systems - Manual and lightweight devices93.100Gradnja železnicConstruction of railways45.080Rails and railway componentsICS:Ta slovenski standard je istoveten z:EN 13848-4:2011SIST EN 13848-4:2012en,fr,de01-marec-2012SIST EN 13848-4:2012SLOVENSKI
STANDARD
SIST EN 13848-4:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 13848-4
December 2011 ICS 93.100 English Version
Railway applications - Track - Track geometry quality - Part 4: Measuring systems - Manual and lightweight devices
Applications ferroviaires - Voie - Qualité géométrique de la voie - Partie 4: Systèmes de mesure - Dispositifs manuels et de faible poids
Bahnanwendungen - Oberbau - Qualität der Gleisgeometrie - Teil 4: Messsysteme - Handgeführte und leichte Vorrichtungen This European Standard was approved by CEN on 5 November 2011.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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 STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13848-4:2011: ESIST EN 13848-4:2012
EN 13848-4:2011 (E) 2 Contents Page Foreword .41 Scope .52 Normative references .53 Terms and definitions .54 Symbols and abbreviations .75 Track geometry measuring system fitted on trolleys or on manually operated devices .85.1 Introduction .85.2 General description .85.2.1 General description: TGMT .85.2.2 General description: MOD .95.3 Environmental conditions . 105.3.1 Introduction . 105.3.2 Climatic conditions . 105.3.3 Operating conditions . 105.4 Track features input . 105.4.1 General . 105.4.2 Track features input: TGMT . 115.4.3 Track features input: MOD . 115.5 Data localisation . 115.5.1 Data localisation: TGMT . 115.5.2 Data localisation: MOD . 115.6 Measuring system/device . 125.6.1 Measuring system/device: TGMT . 125.6.2 Measuring system/device: MOD . 125.7 Data processing . 135.7.1 Data processing: TGMT . 135.7.2 Data processing: MOD . 135.8 Data output . 135.8.1 Data output: TGMT. 135.8.2 Data output: MOD . 145.9 Data storage . 145.9.1 Data storage: TGMT . 145.9.2 Data storage: MOD. 146 Testing of track geometry measuring system . 146.1 Testing: TGMT . 146.1.1 General . 146.1.2 Calibration . 156.1.3 Validation tests . 156.1.4 Routine validation . 176.2 Testing: MOD . 176.2.1 Introduction . 176.2.2 Calibration . 186.2.3 Validation tests . 186.2.4 Routine validation . 18Annex A (normative)
Parameters measured by track geometry measuring trolleys (TGMTs) and manually operated devices (MODs) . 19A.1 Introduction . 19A.2 Track gauge . 20SIST EN 13848-4:2012
EN 13848-4:2011 (E) 3 A.3 Longitudinal level . 21A.4 Cross level . 22A.5 Alignment . 23A.6 Twist . 24Annex B (informative)
Principles of measurement . 25B.1 General description . 25B.2 Longitudinal level and alignment (TGMT only) . 25B.2.1 Chord measuring system . 25B.2.2 Inertial measuring system . 25B.3 Track gauge . 26B.4 Cross level . 26B.5 Twist . 26Annex C (normative)
TGMT / Description of field tests: values to be respected . 27C.1 Repeatability – Statistical analysis of parameter data . 27C.2 Reproducibility – Statistical analysis of parameter data . 27Bibliography . 29 SIST EN 13848-4:2012
EN 13848-4:2011 (E) 4 Foreword This document (EN 13848-4:2011) 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 June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. 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 European Standard is one of the series EN 13848 “Railway applications – Track – Track geometry quality” as listed below: Part 1: Characterisation of track geometry; Part 2: Measuring systems – Track recording vehicles; Part 3: Measuring systems – Track construction and maintenance machines; Part 4: Measuring systems – Manual and lightweight devices; Part 5: Geometric quality levels – Plain line; Part 6: Characterisation of geometric quality. 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, Croatia, 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 13848-4:2012
EN 13848-4:2011 (E) 5 1 Scope This part of this European Standard specifies the minimum requirements that shall be met by measuring systems fitted on track geometry measuring trolleys and manually operated devices to give an evaluation of track geometry quality when measuring one or more of the parameters described in EN 13848-1:2003+A1:2008. It sets out the acceptable differences from EN 13848-1:2003+A1:2008 when using track geometry measuring trolleys and manually operated devices to measure track geometry. It applies to all track geometry measuring systems fitted to track geometry measuring trolleys and manually operated devices after the date of implementation of this standard. 2 Normative references The following referenced documents are indispensable 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 13848-1:2003+A1:2008, Railway applications – Track – Track geometry quality – Part 1: Characterisation of track geometry EN 13848-2:2006, Railway applications – Track – Track geometry quality – Part 2: Measuring systems – Track recording vehicles EN 13848-5:2008+A1:2010, Railway applications – Track – Track geometry quality – Part 5: Geometric quality levels – Plain line 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 track geometry measuring trolley (TGMT) trolley designed for measuring one or more track geometry parameters, having the following characteristics: self-propelled, hauled or moved by human force; portability (capability to be placed readily on or off the track manually or by other means); capability of measuring from standstill to the maximum permissible speed of the trolley; having wheels which do not load the track as defined in Clause 5 of EN 13848-1:2003+A1:2008. 3.2 manually operated device (MOD) hand tool designed for measuring track gauge and/or cross level at standstill 3.3 sensor device which detects, measures and translates characteristics of track geometry into quantities that can be used for further data processing SIST EN 13848-4:2012
EN 13848-4:2011 (E) 6 3.4 measuring direction course between two points on a track, independent of orientation of the TGMT. Between two given points A and B, there are two opposite directions: A to B and B to A 3.5 orientation physical positioning of a TGMT, with regards to which end of the TGMT is leading or trailing 3.6 repeatability degree of agreement between the values of successive measurements of the same parameter made under the same conditions, within a short period of time, where the individual measurements are carried out on the same section of track using the self-same measurement device and interpretation methods, subject to the following: similar speed; same measuring direction; same TGMT orientation; similar environmental conditions. 3.7 reproducibility degree of agreement between the values of successive measurements of the same parameter made under varying conditions, within a short period of time, where the individual measurements are carried out on the same section of track using the self-same measurement device and interpretation methods, subject to one or more of the following: variation of speed; different measuring directions; different TGMT orientations, if TGMT is designed to measure in both orientations; different environmental conditions. 3.8
validation set of tests for determining whether the TGMT or MOD complies with the requirements of this standard 3.9 calibration set of procedures for adjusting the TGMT or MOD in order to meet the requirements of this standard 3.10 event record of a track or line-side feature that can be either technical, physical or natural 3.11 localisation information required to locate events and the measured track geometry SIST EN 13848-4:2012
EN 13848-4:2011 (E) 7 3.12 reference track track with known characteristics, to allow adequate testing of the track geometry measuring and recording system 3.13 transfer function refer to Annex A of EN 13848-2:2006 3.14 resolution smallest change in the value of a quantity to be measured which produces a detectable change in the indication of the measuring instrument 3.15 uncertainty refer to ENV 13005:1999, 2.3.5 3.16 re-colouring algorithm which converts one signal into a different signal. It is used in EN 13848 series to convert a chord measurement signal into a D1, D2 or D3 measurement signal 4 Symbols and abbreviations For the purposes of this document, the following symbols and abbreviations apply. Table 1 — Symbols and abbreviations No. Symbol Designation Unit1 D1 Wavelength range 3 m < λ ≤ 25 m m 2 D2 Wavelength range 25 m < λ ≤ 70 m m 3 D3 Wavelength range 70 m < λ ≤ 150 m for longitudinal level Wavelength range 70 m < λ ≤ 200 m for alignment m 4 Lo Lower limit of wavelength range D1, D2, D3 m 5 Lu Upper limit of wavelength range D1, D2, D3 m 6 λ Wavelength m 7 l Twist base-length m 8 TGMT Track geometry measuring trolley
9 MOD Manually operated device
SIST EN 13848-4:2012
EN 13848-4:2011 (E) 8 5 Track geometry measuring system fitted on trolleys or on manually operated devices 5.1 Introduction This standard concerns only the track geometry measuring systems installed on trolleys or on manually operated devices used to measure one or more of the parameters described in EN 13848-1:2003+A1:2008. 5.2 General description 5.2.1 General description: TGMT For the purposes of this document, the track geometry measuring system fitted on TGMTs is divided into several units as represented in Figure 1 below:
Figure 1 — TGMT Track geometry measuring system The track geometry measuring system installed on a TGMT is intended to: measure track geometry parameters; measure the longitudinal distance between measuring operations; associate the precise location to the measured data; process the measured data, preferably on site, in order to analyse the track geometry parameters; record these parameters on computer readable media or on paper.
MEASURING SYSTEM / DEVICE (5.6.1) DATA OUTPUT (5.8.1) DATA STORAGE (5.9.1) TRACK FEATURES INPUT (5.4.2) DATA LOCALISATION (5.5.1) DATA PROCESSING (5.7.1) SIST EN 13848-4:2012
EN 13848-4:2011 (E) 9 The results of the above system can be used for track quality monitoring and safety assurance with respect to track geometry on track sections where maintenance works have been or will be carried out. This standard takes account of the capabilities of the TGMTs in its requirements and as a consequence some of the requirements of EN 13848-1:2003+A1:2008, e.g. loaded track, have been relaxed. There is no requirement for a TGMT to measure all parameters. The parameters to be measured and their processing shall at least meet the requirements stated in Annex A. Contrarily to the measuring systems fitted to track recording vehicles, the measuring systems fitted to TGMTs are not required to measure in both TGMT orientations. The computer system shall be suitable for outdoor use and be of a type which would be suitable for rail-bound machines. It shall represent widely- used and supported technologies. 5.2.2 General description: MOD For the purposes of this document, the track geometry measuring system fitted on MODs is divided into several units as represented in Figure 2 below:
Figure 2 — MOD Track geometry measuring system The track geometry measuring system of a MOD is intended to: measure at least one track geometry parameter; associate the precise location to the measured data, when data storage is included. The results of the above system can be used for track quality monitoring and safety assurance with respect to track geometry on track sections where maintenance works have been or will be carried out.
DATA OUTPUT (5.8.2) DATA STORAGE (5.9.2) TRACK FEATURES INPUT (5.4.3) DATA LOCALISATION (5.5.2) MEASURING SYSTEM / DEVICE (5.6.2) SIST EN 13848-4:2012
EN 13848-4:2011 (E) 10 This standard takes account of the capabilities of the MODs in its requirements and therefore some of the requirements of EN 13848-1:2003+A1:2008, e.g. loaded track, have been relaxed. There is no requirement for a MOD to measure all parameters. The parameters to be measured and their processing shall at least meet the requirements stated in Annex A. 5.3 Environmental conditions 5.3.1 Introduction All the measuring devices fitted on a TGMT or MOD shall comply with the environmental conditions specified below. 5.3.2 Climatic conditions Appropriate climatic conditions shall be taken into account in the design. These include: ambient temperature; condensation; precipitation; ambient relative humidity. 5.3.3 Operating conditions Appropriate operating conditions especially during transport, assembly and operation shall be taken into account in the design. These include: grease on the rail; reflection condition of the rail; characteristic light conditions; dust, water and snow;
safety requirements (laser beam or conductor rail, for example); user friendliness; vibrations and shocks; electromagnetic environment; compatibility with signalling and communication systems. 5.4 Track features input 5.4.1 General The track features input supports the data localisation. The requirements for TGMTs and MODs are described below. SIST EN 13848-4:2012
EN 13848-4:2011 (E) 11 5.4.2 Track features input: TGMT The track features input shall include at least: line identification; track identification; kilometreage. All of this data shall be entered manually or automatically. 5.4.3 Track features input: MOD The track features input of MODs equipped with data storage means shall include at least: line identification; track identification; kilometreage. All of this data shall be be entered manually or automatically. There are no specific requirements for MODs not equipped with data storage to support data localisation. 5.5 Data localisation 5.5.1 Data localisation: TGMT The reference point for the data localisation system may be the kilometre post or other fixed points. The data localisation system gives the TGMT’s position along the track and shall fulfil the following functions: Synchronisation of the position with the reference point by various methods, using for example the satellite based positioning system, active or passive beacons or other singular points; Measurement of the distance covered by the TGMT and is generally based on a synchronisation signal, which could be given by a wheel-mounted encoder or any other equivalent method; automatic correction or possibility of manual correction of the inaccuracies caused by: wear, sliding; difference of kilometre’s length; uncertainty of the distance run transducer. NOTE Some TGMTs include a feature to compensate for any backward movement. 5.5.2 Data localisation: MOD When data storage is included, the reference point for the localisation may be a kilometre post or other fixed point. SIST EN 13848-4:2012
EN 13848-4:2011 (E) 12 5.6 Measuring system/device 5.6.1 Measuring system/device: TGMT 5.6.1.1 General Track geometry measuring relies on sensors, signal transmission and signal processing following various measuring principles as described in Annex B. 5.6.1.2 Sensors The sensors shall measure in real time the track geometry parameters or their components. The sensors’ mechanical and electrical characteristics (frequency response, signal-to-noise ratio, gain, etc.) shall be adequate to enable the generation of track geometry parameters, independently of the environmental conditions on the railway network. 5.6.1.3 Signal processing 5.6.1.3.1 Introduction A track geometry parameter is obtained from the signals coming from one or several sensors. The signal processing can include sampling, signal filtering, amplification and calculation. 5.6.1.3.2 Sampling The sampling for track geometry signals shall be triggered by a distance-based event so that the measurements are spatially orientated at equal intervals along the length of the track. All measurements shall be sampled at constant distance based intervals not larger than 0,5 m. 5.6.1.3.3 Filtering The filter characteristics like the transition (cut-off) wavelength, type of filter and the rate of attenuation (number of poles) shall be specified. To prevent aliasing of the data, the analogue signal shall be filtered in accordance with the sampling theorem. If filters are applied to the recorded track data, they shall have the following main characteristics: lower cut-off wavelength, defined at –3 dB, Lo = lower limit of at least wavelength range D1 (for high-pass and band-pass filters);
upper cut-off wavelength, defined at –3 dB, Lu = upper limit of at least wavelength range D1 (for low-pass and band-pass filters); slope of at least 24 dB/octave. 5.6.2 Measuring system/device: MOD 5.6.2.1 General Track geometry measuring relies on sensors and signal transmission following various measuring principles as described in Annex B. SIST EN 13848-4:2012
EN 13848-4:2011 (E) 13 5.6.2.2 Sensors The sensors’ electrical and/or mechanical characteristics (frequency response, signal-to-noise ratio, gain, etc.) shall be adequate to enable the generation of track geometry parameters, independently of the environmental conditions on the railway network. 5.7 Data processing 5.7.1 Data processing: TGMT 5.7.1.1 General requirements If the data processing is done aboard the trolley, then the system hardware shall meet all the requirements stated in 5.3. The software should be flexible and modular. An increase in the number of input signals as well as of the number of calculations made should be foreseen in the system design. 5.7.1.2 Parameter generation The signals processed as described in 5.6.1.3 shall be combined in order to obtain parameters complying with requirements of Annex A. 5.7.1.3 Preparation for output interfaces The data processing system shall condition signals and associated information, and shall provide data storage. 5.7.2 Data processing: MOD There are no specific requirements for MODs whether or not they are equipped with data storage means. 5.8 Data output 5.8.1 Data output: TGMT 5.8.1.1 Visualisation The general characteristics for the user’s interface shall include: representation of the measured parameters in graphical or data (numerical) form;
the localisation information and distance run from the starting point. 5.8.1.2 Output of analysis results Outputs shall be provided in accordance with Annex A. 5.8.1.3 Data transfer The data shall be transferable using removable storage media, a network or a radio link complying with an industry standard. SIST EN 13848-4:2012
EN 13848-4:2011 (E) 14 5.8.2 Data output: MOD
For MODs equipped with data storage means, the data shall be transferable using removable storage media, a network or a radio link complying with an industry standard. 5.9 Data storage 5.9.1 Data storage: TGMT As a minimum, the following data shall be stored in a prescribed retrievable format: those parameters described in Annex A that are measured; the result of any onboard processing including settings and software version; the localisation information or distance run from the starting point; the date and time of the recording; identification of the TGMT; user remarks and actions. 5.9.2 Data storage: MOD It is recommended that the following data be transcribed to a computer file: those parameters described in Annex A that are measured; the localisation information or distance from the starting point; the date and time of the recording; the identification of the MOD and of the user. 6 Testing of track geometry measuring system 6.1 Testing: TGMT 6.1.1 General This clause covers actions and procedures, which are necessary to ensure effective operation of the measuring devices and the corresponding processing system if present. Compliance shall be demonstrated by the following procedures: Calibration This ensures an accurate setting of the devices within the track geom
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SLOVENSKI STANDARD
oSIST prEN 13848-4:2010
01-julij-2010
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Railway applications - Track - Track geometry quality - Part 4: Measuring systems -
Manual and lightweight devices
Bahnanwendungen- Oberbau - Qualität der Gleisgeometrie - Teil 4: Messsysteme -
Handgeführte und leichte Vorrichtungen
Ta slovenski standard je istoveten z: prEN 13848-4
ICS:
93.100 Gradnja železnic Construction of railways
oSIST prEN 13848-4:2010 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 13848-4:2010
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oSIST prEN 13848-4:2010
EUROPEAN STANDARD
DRAFT
prEN 13848-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2010
ICS
English Version
Railway applications - Track - Track geometry quality - Part 4:
Measuring systems - Manual and lightweight devices
Bahnanwendungen - Oberbau - Geometrische
Gleislagegüte - Teil 4: Messsysteme - Gleisbau und
Instandhaltungsmaschinen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee CEN/TC 256.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language
made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the
same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to
provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and
shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2010 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13848-4:2010: E
worldwide for CEN national Members.
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oSIST prEN 13848-4:2010
prEN 13848-4:2010 (E)
Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Symbols and abbreviations .7
5 Track geometry measuring system fitted on trolleys or on manually operated devices .7
5.1 Introduction .7
5.2 General description .7
5.2.1 General description: TGMT .7
5.2.2 General description: MOD .9
5.3 Environmental conditions .9
5.3.1 Introduction .9
5.3.2 Climatic conditions . 10
5.3.3 Operating conditions . 10
5.4 Track features input . 10
5.4.1 General . 10
5.4.2 Track features input: TGMT . 10
5.4.3 Track features input: MOD . 11
5.5 Data localisation . 11
5.5.1 Data localisation: TGMT . 11
5.5.2 Data localisation: MOD . 11
5.6 Measuring system/device . 11
5.6.1 Measuring system/device: TGMT . 11
5.6.2 Measuring system/device: MOD . 12
5.7 Data processing . 12
5.7.1 Data processing: TGMT . 12
5.7.2 Data processing: MOD . 13
5.8 Data output . 13
5.8.1 Data output: TGMT. 13
5.8.2 Data output: MOD . 13
5.9 Data storage . 13
5.9.1 Data storage: TGMT . 13
5.9.2 Data storage: MOD. 14
6 Testing of track geometry measuring system . 14
6.1 Testing: TGMT . 14
6.1.1 Introduction . 14
6.1.2 Calibration . 14
6.1.3 Validation tests . 15
6.1.4 Routine validation . 17
6.2 Testing: MOD . 17
6.2.1 Introduction . 17
6.2.2 Calibration . 17
6.2.3 Validation tests . 18
6.2.4 Routine validation . 18
Annex A (normative) Parameters measured by track geometry measuring trolleys (TGMTs) and manually
operated devices (MODs) . 19
A.1 Introduction . 19
A.2 Track gauge . 19
2
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prEN 13848-4:2010 (E)
A.3 Longitudinal level . 20
A.4 Cross level . 21
A.5 Alignment . 22
A.6 Twist . 23
Annex B (informative) Principles of measurement. 24
B.1 General description . 24
B.2 Longitudinal level and alignment (TGMT only) . 24
B.2.1 Chord measuring system . 24
B.2.2 Inertial measuring system . 24
B.3 Track gauge . 25
B.4 Cross level . 25
B.5 Twist . 25
Annex C (normative) TGMT / Description of field tests: values to be respected . 26
C.1 Repeatability – Statistical analysis of parameter data . 26
C.2 Reproducibility – Statistical analysis of parameter data . 26
3
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oSIST prEN 13848-4:2010
prEN 13848-4:2010 (E)
Foreword
This document (prEN 13848-4:2010) has been prepared by Technical Committee CEN/TC 256 “Railway applications”,
the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
In this European standard, the annexes A and C are normative and the annex B is informative.
This European Standard is one of the series EN 13848 “Railway applications – Track – Track geometry quality” as
listed below:
Part 1: Characterisation of track geometry
Part 2: Measuring systems – Track recording vehicles
Part 3: Measuring systems – Track construction and maintenance machines
Part 4: Measuring systems – Manual and lightweight devices
Part 5: Geometric quality levels
This document includes a Bibliography.
4
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oSIST prEN 13848-4:2010
prEN 13848-4:2010 (E)
1 Scope
This part of the European Standard specifies the minimum requirements that shall be met by measuring systems fitted
on track recording trolleys and manually operated devices to give an evaluation of track geometry quality when using
one or more of the parameters described in EN 13848-1. It sets out the acceptable differences from EN 13848-1 when
using track recording trolleys and manually operated devices to measure track geometry.
It applies to all track geometry measuring systems fitted to track recording trolleys and manually operated devices
after the date of implementation of this standard.
2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications. These
normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated
references, subsequent amendments or revisions of any of these publications apply to this European Standard only
when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred
to applies (including amendments).
EN 13848-1:2003+A1:2008, Railway applications – Track – Track geometry quality – Part 1: Characterisation of track
geometry
3 Terms and definitions
For the purposes of this European Standard, the following terms and definitions apply.
3.1
track geometry measuring trolley (TGMT)
trolley designed for measuring one or more track geometry parameters, having the following characteristics:
self-propelled, hauled or moved by human force;
portability (capability to be placed readily on or off the track manually or by other means);
capability of measuring from standstill to the maximum permissible speed of the trolley;
having wheels which do not load the track as defined in clause 5 of EN 13848-1:2003+A1:2008.
3.2
manually operated device (MOD)
hand tool designed for measuring track gauge and/or cross level at standstill
3.3
sensor
device which detects, measures and translates characteristics of track geometry into quantities that can be used for
further data processing
3.3
measuring direction
course between two points on a track, independent of orientation of the TGMT. Between two given points A and B,
there are two opposite directions: A to B and B to A
3.4
orientation
physical positioning of a TGMT, with regards to which end of the TGMT is leading or trailing
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3.5
repeatability
degree of agreement between the values of successive measurements of the same parameter made under same
conditions, within a short period of time, where the individual measurements are carried out on the same section of
track using the same measurement and interpretation methods, subject to the following:
similar speed;
same measuring direction;
same TGMT orientation;
similar environmental conditions.
3.6
reproducibility
degree of agreement between the values of successive measurements of the same parameter made under varying
conditions, within a short period of time, where the individual measurements are carried out on the same section of
track using the same measurement and interpretation methods, subject to one or more of the following:
variation of speed;
different measuring directions;
different TGMT orientations;
different environmental conditions.
3.7
validation
set of tests for determining if the TGMT or MOD complies with the requirements of this standard
3.8
calibration
set of procedures for adjusting the TGMT or MOD in order to meet the requirements of this standard
3.9
event
record of a track or line-side feature that can be either technical, physical or natural
3.10
localisation
information required to locate events and the measured track geometry
3.11
reference track
track with known characteristics, to allow adequate testing of the track geometry measuring and recording system
3.12
transfer function
refer to Annex A of EN 13848-2
3.13
resolution
smallest change in the value of a quantity to be measured which produces a detectable change in the indication of the
measuring instrument
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3.14
uncertainty
Refer to ENV 13005:1999, § 2.3.5
4 Symbols and abbreviations
For the purposes of this European Standard, the following symbols and abbreviations apply.
Table 1 — Symbols and abbreviations
No. Symbol Designation Unit
1 D1 m
Wavelength range 3 m < λ ≤ 25 m
2 D2 m
Wavelength range 25 m < λ ≤ 70 m
3 D3 m
Wavelength range70 m < λ ≤ 150 m for longitudinal level
Wavelength range70 m < λ ≤ 200 m for alignment
4 Lo Lower limit of wavelength range D1, D2, D3 m
5 Lu Upper limit of wavelength range D1, D2, D3 m
6 Wavelength m
λ
7 Twist base-length m
l
8 TGMT Track geometry measuring trolley
9 MOD Manually operated device
5 Track geometry measuring system fitted on trolleys or on manually operated devices
5.1 Introduction
This standard concerns only the track geometry measuring systems installed on trolleys or on manually operated
devices used to measure one or more of the parameters described in EN 13848-1.
5.2 General description
5.2.1 General description: TGMT
For the purpose of this standard, the track geometry measuring system fitted on TGMTs is divided into several units
as represented in Figure 1 below:
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MEASURING
TRACK FEATURES
SYSTEM / DEVICE
INPUT (clause 5.4.2)
(clause 5.6.1)
DATA DATA OUTPUT
PROCESSING (clause 5.8.1)
DATA
(clause 5.7.1)
DATA STORAGE
LOCALISATION
(clause 5.9.1)
(clause 5.5.1)
Figure 1 — TGMT Track geometry measuring system
The track geometry measuring system installed on a TGMT is intended to:
measure track geometry parameters;
measure the longitudinal distance between measuring operations;
associate the precise location to the measured data;
process the measured data, preferably on site, in order to analyse the track geometry parameters;
record these parameters on computer readable media or on paper.
The results of the above system can be used for track quality monitoring and safety assurance with respect to
track geometry on track sections where maintenance works have been or will be carried out.
This standard takes account of the capabilities of the TGMTs in its requirements and as a consequence some
of the requirements of EN 13848-1, e.g. loaded track, have been relaxed.
There is no requirement for a TGMT to measure all parameters. The parameters to be measured and their
processing shall at least meet the requirements stated in Annex A.
Contrarily to the measuring systems fitted to track recording vehicles, the measuring systems fitted to TGMTs
are not required to measure in both TGMT orientations.
The computer system shall be of a kind and type suitable for rail-bound vehicle applications and for outdoor
use and shall represent widely used and supported technologies.
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5.2.2 General description: MOD
For the purpose of this standard, the track geometry measuring system fitted on MODs is divided into several
units as represented in Figure 2 below:
TRACK FEATURES
INPUT (clause 5.4.3)
MEASURING
DATA OUTPUT
DATA
SYSTEM / DEVICE
(clause 5.8.2)
LOCALISATION
(clause 5.6.2)
(clause 5.5.2)
DATA STORAGE
(clause 5.9.2)
Figure 2 — MOD Track geometry measuring system
The track geometry measuring system of a MOD is intended to:
measure at least one track geometry parameter;
when data storage is included, associate the precise location to the measured data.
The results of the above system can be used for track quality monitoring and safety assurance with respect to
track geometry on track sections where maintenance works have been or will be carried out.
This standard takes account of the capabilities of the MODs in its requirements and as a consequence some
of the requirements of EN 13848-1, e.g. loaded track, have been relaxed.
There is no requirement for a MOD to measure all parameters. The parameters to be measured and their
processing shall at least meet the requirements stated in Annex A.
5.3 Environmental conditions
5.3.1 Introduction
All the measuring devices fitted on a TGMT and MOD shall comply with the environmental conditions
specified below.
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5.3.2 Climatic conditions
Appropriate climatic conditions shall be taken into account in the design. These include:
ambient temperature;
condensation;
precipitation;
ambient relative humidity.
5.3.3 Operating conditions
Appropriate operating conditions especially during transport, assembly and operation shall be taken into
account in the design. These include:
grease on the rail;
reflection condition of the rail;
characteristic light conditions;
dust, water and snow;
safety requirements (laser beam or conductor rail, for example);
user friendliness;
vibrations and shocks;
electromagnetic environment;
compatibility with signalling and communication systems.
5.4 Track features input
5.4.1 General
The track features input supports the data localisation. The requirements for TGMTs and MODs are described
below.
5.4.2 Track features input: TGMT
The track features input shall include at least:
line identification;
track identification;
kilometreage.
All these data shall be able to be entered by manual or automatic means.
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5.4.3 Track features input: MOD
The track features input of MODs equipped with data storage means shall include at least:
line identification;
track identification;
kilometreage.
All these data shall be able to be entered by manual or automatic means.
There are no specific requirements for MODs not equipped with data storage means to support data
localisation.
5.5 Data localisation
5.5.1 Data localisation: TGMT
The reference point for the data localisation system may be the kilometre post or other fixed points.
The data localisation system gives the TGMT’s position along the track and shall fulfil the following functions:
synchronises the position with the reference point by various methods, using for example the satellite
based positioning system, active or passive beacons or other singular points;
measures the distance covered by the TGMT and is generally based on a synchronisation signal, which
could be given by a wheel-mounted encoder or any other equivalent method;
automatically corrects or allows manual correction of the inaccuracies caused by:
wear, sliding;
difference of kilometre’s length;
uncertainty of the distance run transducer.
NOTE Some TGMTs include a feature to compensate for any backward movement.
5.5.2 Data localisation: MOD
When data storage is included, the reference point for the localisation may be a kilometre post or other fixed
point.
5.6 Measuring system/device
5.6.1 Measuring system/device: TGMT
5.6.1.1 General
Track geometry measuring relies on sensors, signal transmission and signal processing following various
measuring principles as described in Annex B.
5.6.1.2 Sensors
The sensors shall measure in real time the track geometry parameters or their components.
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The sensors’ mechanical and electrical characteristics (frequency response, signal-to-noise ratio, gain, etc.)
shall be adequate to enable the generation of track geometry parameters, independently of the environmental
conditions on the railway network.
5.6.1.3 Signal processing
5.6.1.3.1 Introduction
A track geometry parameter is obtained from the signals coming from one or several sensors. The signal
processing can include sampling, signal filtering, amplification and calculation.
5.6.1.3.2 Sampling
The sampling for track geometry signals shall be triggered by a distance-based event so that the
measurements are spatially orientated at equal intervals along the length of the track.
All measurements shall be sampled at constant distance based intervals not larger than 0,5 m.
5.6.1.3.3 Filtering
The filter characteristics like the transition (cut-off) wavelength, type of filter and the rate of attenuation
(number of poles) shall be specified.
To prevent aliasing of the data the analogue signal shall be filtered in accordance with the sampling theorem.
If filters are applied to the recorded track data, they shall have the following main characteristics:
lower cut-off wavelength, defined at –3 dB, Lo = lower limit of at least wavelength range D1 (for high-pass
and band-pass filters);
upper cut-off wavelength, defined at –3 dB, Lu = upper limit of at least wavelength range D1 (for low-pass
and band-pass filters);
slope of at least 24 dB/octave.
5.6.2 Measuring system/device: MOD
5.6.2.1 General
Track geometry measuring relies on sensors, signal transmission following various measuring principles as
described in Annex B.
5.6.2.2 Sensors
The sensors’ electrical and/or mechanical characteristics (frequency response, signal-to-noise ratio, gain, etc.)
shall be adequate to enable the generation of track geometry parameters, independently of the environmental
conditions on the railway network.
5.7 Data processing
5.7.1 Data processing: TGMT
5.7.1.1 General requirements
If the data processing is done aboard the trolley, then the system hardware shall meet all the requirements
stated in sub-clause 5.3.
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The software should be flexible and modular.
An increase in the number of input signals as well as of the number of calculations made should be foreseen
in the system design.
5.7.1.2 Parameter generation
The signals processed as described in 5.6.1.3 shall be calculated in order to obtain parameters complying
with requirements of Annex A.
5.7.1.3 Preparation for output interfaces
The data processing system shall condition signals and associated information, and shall provide data
storage.
5.7.2 Data processing: MOD
There are no specific requirements for MODs whether or not they are equipped with data storage means.
5.8 Data output
5.8.1 Data output: TGMT
5.8.1.1 Visualisation
The general characteristics for the user’s interface shall include:
representation of the measured parameters in graphical or data (numerical) form;
the localisation information and distance run from the starting point.
5.8.1.2 Output of analysis results
Outputs shall be provided in accordance with Annex A.
5.8.1.3 Data transfer
The data shall be transferable using removable storage media, a network or a radio link complying with an
industry standard.
5.8.2 Data output: MOD
For MODs equipped with data storage means, the data shall be transferable using removable storage media,
a network or a radio link complying with an industry standard.
5.9 Data storage
5.9.1 Data storage: TGMT
As a minimum, the following data shall be stored in a prescribed retrievable format:
those parameters described in Annex A that are measured;
the result of any onboard processing including settings and software version;
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the localisation information or distance run from the starting point;
the date and time of the recording;
identification of the TGMT;
user remarks and actions.
5.9.2 Data storage: MOD
It is recommended that the following data be transcribed to a computer file:
those parameters described in Annex A that are measured;
the localisation information or distance from the starting point;
the date and time of the recording;
the identi
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