1、BRITISH STANDARD BS ISO 6969:2004 Road vehicles Sound signalling devices Tests after mounting on vehicle ICS 43.040.20 BS ISO 6969:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 14 July 2004 BSI 14 July 2004 ISBN 0 580 44044 3 National
2、foreword This British Standard reproduces verbatim ISO 6969:2004 and implements it as the UK national standard. The UK participation in its preparation was entrusted to Technical Committee AUE/16, Electrical and electronic equipment, which has the responsibility to: A list of organizations represent
3、ed on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using th
4、e “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from l
5、egal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK.
6、 Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and iii, a blank page, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd.
7、 No. Date Comments Reference number ISO 6969:2004(E) OSI 4002INTERNATIONAL STANDARD ISO 6969 Third edition 2004-07-01 Road vehicles Sound signalling devices Tests after mounting on vehicle Vhicules routiers Avertisseurs sonores Essais aprs montage sur le vhicule BSISO6969:2004IS:9696 O4002(E) DPlcsi
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12、y ttseuqer ehe.r ISO cirypothg fofice saCe tsopale 65 eneG 1121-HC 02 av leT. 4 + 10 947 22 1 11 xaF0 947 22 14 + 9 74 E-mail coirypthgiso.o gr We bwww.is.o gro Published in Switzerland ii ISO 4002 Allr ithgsr esedevrBSISO6969:2004IS:9696 O4002(E) I SO 4002 All irthgs ersedevr iiiForeword ISO (the I
13、nternational Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee
14、has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnica
15、l standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bod
16、ies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any
17、 or all such patent rights. ISO 6969 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment. This third edition cancels and replaces the second edition (ISO 6969:1999), which has been technically revised. BSISO6969:2004INTENRATIONAL TSAND
18、ADR IS:9696 O4002(E)I SO 4002 All irthgs ersedevr 1Road vehicles Sound signalling devices Tests after mounting on vehicle 1 Scope This International Standard specifies the testing of sound signalling devices in accordance with ISO 512, to be carried out after mounting on the vehicle. 2 Normative ref
19、erences 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. ISO 512:1979, Road vehicles Sound signall
20、ing devices Technical specifications IEC 61672 (all parts), Electroacoustics Sound level meters 1)3 Measuring apparatus The measurement of sound pressure levels shall be made using a sound level meter in accordance with IEC 61672. When a device for protection of the sound level meter against wind is
21、 used, its effect on the measuring accuracy shall be taken into account according to the indications of the manufacturer. The electrical measurements shall be made using instruments of the class 0,5 as specified in IEC 61672. The measurements of lengths shall be made with a tolerance of 0,05 m. 4 Ex
22、pression of results The results of the measurements of the sound pressure levels shall be in relation to 2 10 5Pa (N/m 2 ), weighted in accordance with curve A as specified in IEC 61672, with the A-weighted results expressed in decibels. 1) Replaces IEC 60651. BSISO6969:2004IS:9696 O4002(E) 2 I SO 4
23、002 All irthgs ersedevr5 Test conditions 5.1 Test site The vehicle shall be placed on an open site, such as an open space of at least 50 m radius, the central part of which, intended for the execution of the measurements, shall be practically horizontal over at least 20 m radius, covered with concre
24、te, asphalt or any similar material, and free from long grass, loose soil or ashes. No person other than the observer taking the readings on the sound level meter shall be in the vicinity of the sound signalling device or of the microphone (the presence of bystanders could have an appreciable influe
25、nce on the meter readings). 5.2 Ambient conditions Measurements shall not be affected by weather conditions (wind, rain, humidity, etc.). No measurements shall be carried out when the wind speed is greater than 5 m/s. The ambient temperature during the measurements shall be within the temperature ra
26、nge specified for the measuring equipment. The ambient noise level within the entire range covered by frequencies of the sound components emitted by the sound signalling device shall be at least 10 dB lower than the sound level of each of the components. However, this requirement is not applicable t
27、o components with a measured sound pressure level lower than 70 dB (A-weighted). 5.3 Time constant Measurements shall be carried out with the fast time constant of the sound measuring device. 5.4 Positioning of the microphone 5.4.1 Direction The axis of maximum sensitivity of the microphone shall be
28、 horizontal and parallel to the vertical longitudinal zero plane of the vehicle and directed towards the front of the vehicle. 5.4.2 Position The microphone shall be placed (7 0,1) m from the foremost point of the vehicle within a circle of 0,5 m radius, whose plane is vertical and perpendicular to
29、the longitudinal zero plane of the vehicle and whose centre is 1,0 m above the ground, (see Figure 1). 5.5 Supply conditions 5.5.1 Supply with alternating current For sound signalling devices supplied by alternating current, the measurements shall be made with the engine running at three speeds corr
30、esponding to 50 %, 75 % and 100 % of the maximum engine speed specified by the manufacturer. When the measurements are being made there shall be no other electrical load supplied by the generator. 5.5.2 Supply with direct current The sound signalling devices shall be operated at the applicable test
31、voltage specified in Table 1 for the different nominal on-board supply voltages. Measure the voltage during the operation of the sound signalling device at the terminals of the energy source. BSISO6969:2004IS:9696 O4002(E) I SO 4002 All irthgs ersedevr 3Table 1 Nominal supply voltage and test voltag
32、e Nominal supply voltage, U NV 6 12 24 Test voltage, U TV 6,5 13 26 If a rectified a.c. supply is used for the test, the alternating voltage components measured peak-to-peak at the terminals of the energy source during the operation of the sound signalling device shall not exceed 0,1 V. For electro-
33、pneumatic sound signalling devices, the connections between the sound source and the compressor shall be made according to the instructions of the manufacturer. Dimensions in metres Key 1 zero X plane (vertical transverse zero plane) 2 zero Y plane (vertical longitudinal zero plane) 3 ground 4 zero
34、Z plane (horizontal zero plane) Figure 1 Positioning of the microphone BSISO6969:2004IS:9696 O4002(E) 4 I SO 4002 All irthgs ersedevr5.5.3 Supply with compressed air Pneumatic sound signalling devices shall be supplied in accordance with the indications of the manufacturer. 5.6 Measurements Select a
35、ppropriate positions for the microphone within the test circle specified in 5.4.2 and measure the sound pressure level at each of these positions. Continue until the position of the maximum sound pressure level is found. The time of operation of the device under test shall be as short as possible. I
36、n no case shall the test time exceed 30 consecutive seconds, after which it is necessary to allow the sound signalling device under test to cool down for at least 20 min. In the case where a vehicle is equipped with several sound signalling devices which operate simultaneously, the measurements shal
37、l be made with all the devices operating at the same time. Any peaks in the readings which are apparently unrelated to the characteristics of the general sound level shall not be taken into account. 6 Requirements In accordance with ISO 512, sound signalling devices shall emit a continuous uniform s
38、ound; their acoustic spectra shall not vary significantly during operation. For sound signalling devices operated by an a.c. supply, the requirements apply only at a constant engine speed as specified in 5.5.1. Measured under the conditions specified in Clause 5, the value of the sound pressure leve
39、l of the device under test shall be not greater than 112 dB (A-weighted) 2) , but shall be at least a) 70 dB (A-weighted) 3)for sound signalling devices installed on mopeds with a maximum speed of 30 km/h, b) 73 dB (A-weighted) 3)for sound signalling devices installed on mopeds with a maximum speed
40、greater than 30 km/h, c) 83 dB (A-weighted)4)for sound signalling devices installed on motorcycles of up to and including 7 kW power output of the engine, and d) 93 dB (A-weighted) 4) for sound signalling devices installed on vehicles having at least four wheels and for motorcycles with power output
41、 of the engine exceeding 7 kW. NOTE The values given here could differ from legal requirements (e.g. 93/30/EEC) in some countries. 2) Value taken from ECE Regulation 28, Part II, and 93/30/EEC. 3) Value based on ECERegulation63, Annex 4. 4) Value taken from ECERegulation28, Part II. BSISO6969:2004IS
42、:9696 O4002(E) I SO 4002 All irthgs ersedevr 5Bibliography 1 ECE-R 28, Uniform provisions concerning the approval of audible warning devices and of motor vehicles with regard to their audible signals 2 ECE-R 63, Uniform provisions concerning the approval of mopeds with regard to noise 3 93/30/EEC, C
43、ouncil Directive of 14 June 1993 on sound signalling devices for two- or three-wheeled power driven vehicles 4 IEC 60051 (all parts), Direct acting indicating analogue electrical measuring instruments and their accessories 5 IEC 61260:1995, Electroacoustics Octave-band and fractional-octave-band fil
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