SIST EN 17285:2020

Railway applications - Acoustics - Measuring of door audible warnings

This European standard describes the type test assessment method for acoustic signals at passenger external doors applying to rolling stock. The following applies to this standard: - this standard refers to acoustical passenger information indicating the release, opening and closing of passenger doors; - this standard is applicable to tonal signals with defined frequency components; - this standard is not applicable to spoken information.
NOTE 1   Acoustic door signals in terms of TSI compliance are defined in EN 16584-2 "Design for PRM use".
NOTE 2   Acoustic doors signals in terms of door system function are described in EN 14752.

Bahnanwendung - Akustik - Messung akustischer Türsignale von Eisenbahnfahrzeugen

Dieses Dokument beschreibt das Bewertungsverfahren für die Typprüfung akustischer Warnsignale für Fahrgast-Außentüren, das für Schienenfahrzeuge gilt. Für diese Norm gilt Folgendes:
— dieses Dokument bezieht sich auf akustische Fahrgastinformationen, die auf das Entriegeln, Öffnen und Schließen von Fahrgasttüren hinweisen;
— dieses Dokument gilt für Tonsignale mit festgelegten Frequenzkomponenten;
— dieses Dokument gilt nicht für gesprochene Informationen.
ANMERKUNG 1 Akustische Türsignale in Bezug auf die TSI-Konformität sind in EN 16584-2 „Gestaltung für die Nutzung durch PRM“ festgelegt.
ANMERKUNG 2 Akustische Türsignale in Bezug auf die Funktion des Türsystems sind in EN 14752 beschrieben.

Application ferroviaires - Acoustique - Mesurage des signaux audibles d’avertissement des portes

Le présent document décrit la méthode d'évaluation d'un essai de type pour les signaux acoustiques des portes extérieures de voitures voyageurs applicables au matériel roulant. Les éléments suivants s'appliquent à la présente norme :
- le présent document se rapporte aux informations acoustiques de voyageurs indiquant le
déverrouillage, l'ouverture et la fermeture des portes de voitures voyageurs ;
- le présent document s'applique aux signaux tonaux avec des composants de fréquence définie ;
- le présent document ne s'applique pas aux informations vocales.
NOTE 1 En ce qui concerne la conformité à la STI, les signaux acoustiques des portes sont définis dans l'EN 16584-2, « Conception destinée à l'usage par les PMR ».
NOTE 2 Les signaux acoustiques des portes du point de vue du fonctionnement du système de portes sont décrits dans l'EN 14752.

Železniške naprave - Akustika - Merjenje zvočnih opozoril pri vratih

General Information

• Status: Published
• Public Enquiry End Date: 14-Nov-2018
• Publication Date: 13-Aug-2020
• ICS: 17.140.30 - Noise emitted by means of transport
• ICS: 45.060.20 - Trailing stock
• Technical Committee: IŽNP - Reilway applications
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 13-Aug-2020
• Due Date: 18-Oct-2020
• Completion Date: 14-Aug-2020
• Directive: 2008/57/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 (Recast)
• Mandate: M/483 - Mandate for programming and standardisation addressed to the European standardisation bodies under directive 2008/57/EC in the field of the interoperability of the rail system within the European Union
• Ref Project: EN 17285:2020 - Railway applications - Acoustics - Measuring of door audible warnings

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 17285:2020
01-oktober-2020
Železniške naprave - Akustika - Merjenje zvočnih opozoril pri vratih
Railway applications - Acoustics - Measuring of door audible warnings
Bahnanwendung - Akustik - Messung akustischer Türsignale von Eisenbahnfahrzeugen

Application ferroviaires - Acoustique - Mesurage des signaux audibles d’avertissement

des portes
Ta slovenski standard je istoveten z: EN 17285:2020
ICS:
17.140.30 Emisija hrupa transportnih Noise emitted by means of
sredstev transport
45.060.20 Železniški vagoni Trailing stock
SIST EN 17285:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 17285:2020
---------------------- Page: 2 ----------------------
SIST EN 17285:2020
EN 17285
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2020
EUROPÄISCHE NORM
ICS 17.140.30; 45.060.20
English Version
Railway applications - Acoustics - Measuring of door
audible warnings

Application ferroviaires - Acoustique - Mesurage des Bahnanwendung - Akustik - Messung akustischer

signaux audibles d'avertissement des portes Türsignale von Eisenbahnfahrzeugen
This European Standard was approved by CEN on 29 June 2020.

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, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17285:2020 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

1 Scope .................................................................................................................................................................... 5

2 Normative references .................................................................................................................................... 5

3 Terms and definitions ................................................................................................................................... 5

4 Symbols and abbreviations ......................................................................................................................... 6

5 Instrumentation and calibration ............................................................................................................... 6

5.1 Instrumentation .............................................................................................................................................. 6

5.2 Calibration ......................................................................................................................................................... 6

6 Interior tests ..................................................................................................................................................... 6

6.1 Enumeration of vestibule types ................................................................................................................. 6

6.2 Environmental conditions ........................................................................................................................... 8

6.3 Vehicle conditions ........................................................................................................................................... 8

6.4 Measured quantities ...................................................................................................................................... 8

6.5 Measurement procedure .............................................................................................................................. 8

6.5.1 General ................................................................................................................................................................ 8

6.5.2 Measurement positions for measurements in the vehicle ............................................................... 8

6.5.3 Sound pressure level measurement and duration of the signal .................................................... 9

6.5.4 Pulse rate measurement ............................................................................................................................ 10

6.5.5 Frequency properties of the signal ........................................................................................................ 10

6.5.6 Tonal prominence assessment ................................................................................................................ 10

7 Exterior tests.................................................................................................................................................. 11

7.1 General ............................................................................................................................................................. 11

7.2 Environmental conditions ........................................................................................................................ 11

7.3 Vehicle conditions ........................................................................................................................................ 11

7.4 Measured quantities ................................................................................................................................... 11

7.5 Test procedure .............................................................................................................................................. 11

7.5.1 General ............................................................................................................................................................. 11

7.5.2 Measurement positions for exterior tests ........................................................................................... 11

7.5.3 Sound pressure level measurement and duration of the signal ................................................. 12

7.5.4 Pulse rate measurement ............................................................................................................................ 12

7.5.5 Frequency properties of the signal ........................................................................................................ 12

7.5.6 Tonal prominence assessment ................................................................................................................ 13

8 Test report ...................................................................................................................................................... 13

Annex A (normative) Tonal prominence assessment .................................................................................. 14

A.1 General ............................................................................................................................................................. 14

A.2 Method ............................................................................................................................................................. 14

Annex B (normative) Test for an adaptive-level door warning ................................................................ 15

B.1 General ............................................................................................................................................................. 15

B.1.1 Introduction ................................................................................................................................................... 15

B.1.2 Scope ................................................................................................................................................................. 15

---------------------- Page: 4 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)

B.1.3 Approach .......................................................................................................................................................... 15

B.2 Quantities specific to this annex ............................................................................................................. 15

B.3 Instrumentation ............................................................................................................................................ 17

B.4 Environmental and vehicle conditions ................................................................................................. 17

B.5 Measurement positions and data sampling ........................................................................................ 17

B.6 ‘Background’ noise to be generated for the test ................................................................................ 17

B.7 Procedure ........................................................................................................................................................ 18

B.8 Reporting requirements ............................................................................................................................ 20

B.9 Examples .......................................................................................................................................................... 20

B.9.1 General ............................................................................................................................................................. 20

B.9.2 Example 1 ........................................................................................................................................................ 21

B.9.2.1 Description ...................................................................................................................................................... 21

B.9.2.2 Procedure ........................................................................................................................................................ 22

B.9.3 Example 2 ........................................................................................................................................................ 25

B.9.3.1 Description ...................................................................................................................................................... 25

B.9.3.2 Procedure ........................................................................................................................................................ 26

B.9.4 Example 3 ........................................................................................................................................................ 28

B.9.4.1 Description ...................................................................................................................................................... 28

B.9.4.2 Procedure ........................................................................................................................................................ 29

Annex C (normative) Laboratory tests ............................................................................................................... 32

C.1 General ............................................................................................................................................................. 32

C.2 Mounting arrangements............................................................................................................................. 32

C.3 Modes of operation ...................................................................................................................................... 32

C.4 Instrumentation ............................................................................................................................................ 32

C.5 Background noise level .............................................................................................................................. 33

C.6 Pulse rate estimation .................................................................................................................................. 33

C.7 Frequency analysis ....................................................................................................................................... 33

C.8 Measurement of sound pressure level .................................................................................................. 33

Bibliography ................................................................................................................................................................. 36

---------------------- Page: 5 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
European foreword

This document (EN 17285:2020) 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 February 2021, and conflicting national standards shall

be withdrawn at the latest by February 2021.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

According to the CEN-CENELEC Internal Regulations, the national standards organisations 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, Republic of North

Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United

Kingdom.
---------------------- Page: 6 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
1 Scope

This document specifies procedures to assess acoustic signals at passenger external doors applying to all

kind of rolling stock. The following applies to this standard:

— this document refers to acoustical passenger information indicating the release, opening and closing

of passenger doors;

— this document is applicable to tonal signals with defined frequency components levels and pulse

sequences;

— this document is not applicable to spoken information or to signals comprising a sequence of

impulses (such as a door finding signal).
NOTE Acoustic door signals are defined in EN 16584-2 “Design for PRM use”.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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 IEC 60942, Electroacoustics — Sound calibrators

EN 61260 (series), Electroacoustics — Octave-band and fractional-octave-band filters

EN 61672-1, Electroacoustics — Sound level meters — Part 1: Specifications

EN 61672-2, Electroacoustics — Sound level meters — Part 2: Pattern evaluation tests

ISO 266, Acoustics — Preferred frequencies

ISO 1996-2:2017, Acoustics — Description, measurement and assessment of environmental noise — Part 2:

Determination of sound pressure levels
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp/ui
---------------------- Page: 7 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
4 Symbols and abbreviations
RMS sum The sum of the root mean squares of sound pressures
LL L
 
p1 p2 pi
 
10 10 10
RMS sum 10lg 10+ 10++.. 10 dB
 
 
 
Where L , L , … L are a set of sound pressure levels
p1 p2 pi
RMS average average of the root mean square of sound pressures
 
p1 Lp2 LNp
 
10 10 10
10 + 10 ++.. 10
 
RMS average = 10lg dB
 
 
 
Where LL, .. L are a set of sound pressure levels
p1 p2 pN
5 Instrumentation and calibration
5.1 Instrumentation

Each component of the instrumentation system shall meet the requirements for a class 1 instrument

specified in EN 61672-1.

The sound calibrator shall meet the requirements of class 1 according to EN IEC 60942.

Microphones with free-field characteristics shall be used. A suitable microphone windscreen may be

used.

Where one-third octave frequency band analysis is required, the filters shall meet the requirements of

class 1, according to EN 61260.

The compliance of the calibrator with the requirements of EN IEC 60942 shall be verified at least once a

year. The compliance of the instrumentation system with the requirements of EN 61672-1 and

EN 61672-2 shall be verified at least every 2 years. The date of the last verification of the compliance with

the relevant European Standards shall be recorded.
5.2 Calibration

Before and after each series of measurements a sound calibrator meeting the requirements of class 1

according to EN IEC 60942 shall be applied to the microphone(s) for verifying the calibration of the entire

measuring system at one or more frequencies over the frequency range of interest. If the difference

between the two calibrations is more than 0,5 dB all the measurement results in between shall be

rejected.
6 Interior tests
6.1 Enumeration of vestibule types

All the vestibules of a vehicle shall be classified into a number of vestibule types. The list of vestibule

types is to be determined before measurements take place. For this purpose, the wavelength of sound in

air at the lowest primary tone of the audible warning signal, λ , shall be calculated.

---------------------- Page: 8 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)

To make the list, vestibule types shall be distinguished on the basis of any one, or combination of, the

following features.

a) Vestibules with single-panel or double-panel exterior doors are different types.

b) Regarding any solid wall, panel or partition adjacent to the body-side entrance doors that form the

vestibule area, their acoustic effect as ‘barriers’ (influencing the sound propagation) shall be

considered.

— A vestibule may have barriers or partial barriers on either side. Such a barrier is only considered

if it is immediately adjacent to the body-side door(s).

— A partial barrier is distinct from a full barrier if there is an opening in it for passenger access

(aisle).

— Two panels either side of an aisle shall be considered to constitute one partial barrier.

— Any internal door shall be considered closed.

— Any panel or wall not extending further than λc from the interior side walls surface in the main

passenger accommodation area of the vehicle shall not be considered.
— Any panel or wall extending no higher than the 1,2m shall not be considered.

A vestibule type can therefore have 0, 1 or 2 barriers, each of which can be full or partial. No other

property of the barrier than ‘full’ or ‘partial’ shall be considered.

c) A difference in the mounting of the sounder to the vehicle structure will cause a change in the point

mechanical impedance of the structure. Such a difference might be between a mounting mid-panel

or close to any structural component that would act as a stiffener.
d) The sounder location changes according to the following criteria.
The height above the floor changes by more than 30 cm,

The sounder location lies within or outside a distance of λ /4 from a junction of floor, ceiling or panel

surfaces. There are two separate cases of such a junction,
— it is mounted close to two surfaces or,
— it is mounted close to three surfaces.

No other criteria shall be used as they affect the sound pressure level less significantly.

A difference between vestibules in any of these features shall cause a new vestibule type to be added to

the list of types.
---------------------- Page: 9 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
6.2 Environmental conditions

The door opening of the vehicle shall be at least 5 m away from reflecting walls or roof of any building.

There are no requirements on the external ground conditions or ground height.

Care shall be taken to ensure that noise from other sources, e.g. other vehicles or industrial plants and

due to external wind, does not influence the measurements significantly.

For fixed-level sounders, the background noise level L measured over T = 20 s of each measurement

pAeq,T

position shall be at least 10 dB below the level of the warning signal (L , L and, possibly, L ,

pAF pAFmax pAeq,T
see 6.4).

For adaptive-level sounders, the effective background noise is controlled under the measurement

procedure itself – see Annex B.
6.3 Vehicle conditions
The unit shall be at standstill.
Surfaces shall present their normal operational acoustic properties.

As long as the background noise level requirement in 6.2 is fulfilled, any operational condition of auxiliary

equipment shall be accepted.
6.4 Measured quantities

The measured acoustic quantities are L , L and, if required, L , with T as time of the sounder

pAF pAFmax pAeq,T

event duration. For the assessment of tones, narrow band frequency analysis shall be applied.

NOTE Such a requirement is generally specified by legislation or contract.
6.5 Measurement procedure
6.5.1 General

Separate procedures are defined below for measuring: the sound pressure level of the signal in the

vehicle, the duration of the signal, the pulse rate and the frequency content. The first of these procedures,

described in 6.5.3, shall be carried out in situ in the vehicle. The pulse rate (6.5.4) and frequency content

(6.5.5) may alternatively be determined from measurements made of the door sounder component

separately under prescribed laboratory conditions – see Annex C.
6.5.2 Measurement positions for measurements in the vehicle
For the interior tests two alternative microphone arrangements are allowed.

Arrangement 1 (preferred): A single microphone shall be located so as to maximize the measured sound

pressure level within the volume defined at the height of 1,5 m (±0,1 m) above the vehicle floor and

anywhere within a lateral distance of 0,25 m from a point on the mid-plane of the vestibule normal to the

centre-line of the door opening. That is, within the cylindrical volume indicated in Figure 1.

---------------------- Page: 10 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
Key
1 mid way between the doors
2 height: 1,5 m
3 lateral distance: 0,25 m
4 range: ± 0,1 m
5 door openings
Figure 1 — Arrangement 1 with one microphone

Arrangement 2: Eight microphones shall be equally distributed in a circle of radius 0,25 m about a point

1,5 m in height above the vehicle floor and opposite the centre of the door opening and in the vertical

mid-plane of the vehicle. Measurements shall be made (1) for the circle in the horizontal orientation and

(2) for the circle in any vertical orientation.
6.5.3 Sound pressure level measurement and duration of the signal

For fixed level sounders, the whole of the following procedure shall be followed. For adaptive level

sounders the procedure shall be used only to measure the timing, pulse-rates and frequencies.

In a case of an adaptive level device, a measurement shall be carried out to ensure that the sounder level

is adapted to the ambient noise level. The measuring procedure for adaptive door sound devices is

described in Annex B.

For at least one measurement position the time history of L shall be produced for the whole door

pAF

opening signal and for the whole door closing signal. This shall be used to determine the timing and

duration of this time history in relation to the time at which the door operation was initiated.

---------------------- Page: 11 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)

For all measurement positions the following shall be produced while the door is stationary (fully open,

fully closed). The noise of the operation of the door itself is thereby omitted from the following results:

a) L for the door opening signal taken from the part of the signal with the door closed;

pAFmax

b) L for the door closing signal taken from the part of the signal with the door open;

pAFmax

c) If required, the L shall also be evaluated, where T is 5 pulses of the signal taken from the part of

pAeq,T
the signal with the door closed.
NOTE Such a requirement is generally specified by legislation or contract.

For microphone arrangement 2, the results of a), b) and c) shall be the RMS average over all the

microphone positions.

The results of a), b) and c) shall be used as the result for the measurement over the total duration of the

sound event. This method excludes contamination by noise generated by the door mechanism.

The requirements can involve testing the door for each of the cases in which the door is actuated and not

actuated.
6.5.4 Pulse rate measurement

This test may be performed on sound pressure measurements made on the door sounder component in

a suitable environment other than the vehicle (see Annex C).

To count the number of pulses per second a visual representation of the pulsing of the sounder noise shall

be produced.

NOTE A time history plot of LpAeq,T where T is 10 ms will present a clear pulse up to 10 pulses per second. A

plot of LAF will not. Alternatively, a spectrogram with a sufficient time resolution can be produced by many software

packages. This has been found to provide a clear representation of pulse count.
6.5.5 Frequency properties of the signal

This test may be performed on sound pressure measurements made on the door sounder component in

a suitable environment other than the vehicle (see Annex C).

To determine the frequency of tones within the signal a narrow band power spectrum shall be produced

that has a resolution of up to 20 Hz.

NOTE The frequency can also be found in a spectrogram produced for the purpose of pulse rate estimation in

6.5.4.
6.5.6 Tonal prominence assessment

If required, an assessment of the relative audibility of different tones shall be carried out as described in

Annex A.
NOTE Such a requirement is generally specified by legislation or contract.
---------------------- Page: 12 ----------------------
SIST EN 17285:2020
EN 17285:2020 (E)
7 Exterior tests
7.1 General

The test shall be carried out at one entrance door of the unit. If required, two additional measurements

shall be carried out at other entrance door locations.
7.2 Environmental conditions

The door opening of the vehicle shall be at least 5 m away from reflecting walls or roof of any building.

There are no requirements on the external ground conditions or ground height (with or without

platform).

Care shall be taken to ensure that the noise from other sources, e.g. other vehicles or industrial plants and

due to external wind, does not influence the measurements significantly.

For fixed-level sounders, the background noise level L measured over T = 20 s of each measurement

pAeq,T

position shall be at least 10 dB below the level of the warning signal (L , L and, possibly, L ,

pAF pAFmax pAeq,T
see 7.4).

For adaptive-level sounders, the effective background noise is controlled under the measurement

procedure itself – see Annex B.
7.3 Vehicle conditions
The unit shall be at standstill.

As long as the background noise level requirement in 7.2 is fulfilled, any operational condition of auxiliary

equipment shall be accepted.

Wherever equipment of the unit under test exceeds the background noise requirement it is permissible

to switch off the noise emitting components.
7.4 Measured quantities

The measured acoustic quantities are L , L and, if required, L , with T as time of the sounder

pAF pAFmax pAeq,T

event duration. For the assessment of tones, narrow band frequency analysis shall be applied.

NOTE Such a requirement is generally specified by legislation or contract.
7.5 Test procedure
7.5.1 General

Separate procedures are defined below for measuring the sound pressure level of the signal outside the

vehicle, the duration of the signal, the pulse rate and the frequency content. The procedures described in

7.5.3 shall be carried ou
...