1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 13207-1:2012Road vehicles LED lampcharacteristics for bulbcompatible failure detectionPart 1: LED lamps used as directionindicatorsBS ISO 13207-1:2012 BRITISH STANDARDNati
2、onal forewordThis British Standard is the UK implementation of ISO 13207-1:2012. The UK participation in its preparation was entrusted to TechnicalCommittee AUE/16, Electrical and electronic equipment.A list of organizations represented on this committee can be obtained on request to its secretary.T
3、his publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012. Published by BSI Standards Limited 2012ISBN 978 0 580 67541 6 ICS 43.040.20; 43.040.30 Compliance with a British Standard
4、 cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 March 2012.Amendments issued since publicationDate T e x t a f f e c t e dBS ISO 13207-1:2012 ISO 2012Road vehicles LED lamp characteristics for
5、 bulb compatible failure detection Part 1: LED lamps used as direction indicatorsVhicules routiers Caractristiques des lampes LED pour dtection de dfaut compatible avec lampoule Partie 1: Lampes LED utilises comme feux indicateurs de directionINTERNATIONAL STANDARDISO13207-1First edition2012-02-15Re
6、ference numberISO 13207-1:2012(E)BS ISO 13207-1:2012ISO 13207-1:2012(E)ii ISO 2012 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2012All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical,
7、 including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester.ISO copyright officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail copyrightiso.orgWeb www.iso.orgPublishe
8、d in SwitzerlandBS ISO 13207-1:2012ISO 13207-1:2012(E)ForewordISO (the International 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. E
9、ach member body interested in a subject for which a technical committee 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 Internati
10、onal Electrotechnical Commission (IEC) on all matters of electrotechnical 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 Standard
11、s adopted by the technical committees are circulated to the member bodies 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
12、 patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 13207-1 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3, Electrical and electronic equipment.ISO 13207 consists of the following parts, under the general title Road veh
13、icles LED lamp characteristics for bulb compatible failure detection: Part 1: LED lamps used as direction indicators ISO 2012 All rights reserved iiiBS ISO 13207-1:2012BS ISO 13207-1:2012Road vehicles LED lamp characteristics for bulb compatible failure detection Part 1: LED lamps used as direction
14、indicators1 ScopeThis part of ISO 13207 specifies the characteristics of LED (Light Emitting Diode) lamps used as direction indicators when optionally monitored. It applies primarily to those lamps which are installed on 24V truck/trailer combinations. It will enable lamp-failure detection of LED la
15、mps on the drawn vehicle to be compatible with that for bulbs when analysed by the towing unit.2 TerminalsThe connection between the towing vehicle and the towed vehicle should be either as described in ISO 1185 and ISO 3731 or as described in ISO 12098. Towing vehicles should be equipped with elect
16、ronic control units (ECUs), which drive the trailer direction indicator lamps as described in ISO 4082.3 Functional description3.1 PrincipleLamp-failure monitoring electronics are required for mandatory mounted direction-indicator functions. For this purpose, the LED direction-indicator function gen
17、erates a current impulse at a certain time; this current impulse corresponds in terms of amount with the current of a conventional bulb lamp. If the LED direction indicator fails (in relation to the legal requirement of the photometric output), this pulse is not generated. An ECU or intelligent flas
18、her interprets whether the LED direction indicator fails on the basis of this pulse. The result should be used to inform the driver accordingly.INTERNATIONAL STANDARD ISO 13207-1:2012(E) ISO 2012 All rights reserved 1BS ISO 13207-1:2012ISO 13207-1:2012(E)Key1 first process2 second process3 non-failu
19、re4 failure5 voltage: power supply of direction indicator during two flashing processes6 current of LED direction indicator during two flashing processes, the first with, and second without, current control pulse addedI currentI2nominal LED lamp currentI1I2+ control pulse currentT timeT1starting poi
20、nt of the designated pulse time frameT2end of the designated pulse time frameT3earliest start point for the control pulseT4latest end point for the control pulseT5time frame within which the designated control pulse should be detected by the monitoring circuit of the control unitU voltageUBoperation
21、al voltageY voltage, U, in volts; current, I, in amperesFigure 1 Profile diagram 1The functional description of the profiles is shown in Figure 1. If a current as described in Figure 3 is detected in time frame T5 in the first process, the condition of the lamp is recognized as a “non-failure”.3.2 P
22、arallel operation of LED and bulb lampsThe number of functioning direction indicators can be determined on the basis of the amplitude of the pulse when switching on several direction indicators in parallel. In the case of a lamp with mixed LED/21 W bulb light sources, the amplitude of the pulse also
23、 provides information about the number of functioning direction indicators connected.2 ISO 2012 All rights reservedBS ISO 13207-1:2012ISO 13207-1:2012(E)Key1 total current pass2 current pass in the individual units3 control unit4, 5 direction indicator with pulse generationFigure 2 Bulb lampsFigure
24、2 shows 2 21 W bulb lamps and 2 LEDs in a direction indicator, all other combinations are possible. For reasons of clarity, only one side of the vehicle direction indicators is illustrated.4 Dimensions4.1 Pulse currentThe pulse current is directly related to the voltage supply as shown in Figure 3,
25、here for the 24 V/21 W system.Figure 3 Relation between pulse current (I) and voltage supply (U) ISO 2012 All rights reserved 3BS ISO 13207-1:2012ISO 13207-1:2012(E)The circuit-load characteristic of the pulse shall be equivalent to that of a 21 W filament lamp, including tolerances DIN 72601 (all p
26、arts) and ECE-R37.4.2 Pulse timingThe pulse timing dimensions are given in Table 1.Table 1 Pulse timingDescription Condition Value UnitT5= T2 T1Designated time frame for the pulse for the non-failure condition 20 msT1Designated switch-on point for the non-failure pulse through the lamp100 msT2Design
27、ated switch-off point for the non-failure pulse through the lamp120 msT3Earliest switch-on point for the non-failure pulse through the lamp 95 msT4Latest switch-off point for the non-failure pulse through the lamp 125 ms5 Other dimensionsThe lamp current I2should be below 30 mA for the failure condi
28、tion and above 60 mA (at 24 V) for the non-failure condition to enable usage of plain constant-measurement circuits with two levels (below 30 mA means non-functional LED-lamp). Other details, not specified, are left to the manufacturers choice.6 Further detailsIt is not possible to check whether the
29、 system is functioning before the first flashing process. The system should function under the environmental and test conditions specified in ISO 16750 (all parts). The total number of LED direction indicators and conventional lamps in one measuring circuit is limited to 4. The operating voltage ran
30、ge for the pulse control shall between 18 V up to 32 V.7 Trailer detection7.1 GeneralTo facilitate uniform trailer detection by the towing unit, a resistance load of 820 for standardization of the detection function for direction indicators is specified.7.2 Method for powerless trailer detectionIn t
31、he input circuit of a LED lamp, a resistor R = 820 is connected to ground via an electronic power switch (S1); see Figure 4. The power switch is closed when the input voltage (U1) is between 0 and 10 V. When the voltage increases to values 10 V, the power switch is turned to open and disconnects the
32、 resistor from the input circuit. The advantage of this method is that the power consumption of the resistor can be determined at 250 mW.For a powerless trailer detection, an ECU connects a voltage U, e.g. over a pull-up resistor, to the LED lamp. If a trailer is present, the voltage is low; if a tr
33、ailer is not present, the voltage is high.4 ISO 2012 All rights reservedBS ISO 13207-1:2012ISO 13207-1:2012(E)Key1 ECU2 LED-LampR resistor S1electronic power switch U1input voltageaS1is closed when U1is between 0 and 10 V; S1is open when U1 10 V.Figure 4 Connection scheme ISO 2012 All rights reserve
34、d 5BS ISO 13207-1:2012ISO 13207-1:2012(E)Bibliography1 ISO 4082, Road vehicles Motor vehicles Flasher units2 ISO 1185, Road vehicles Connectors for the electrical connection of towing and towed vehicles 7-pole connector type 24 N (normal) for vehicles with 24 V nominal supply voltage3 ISO 3731, Road
35、 vehicles Connectors for the electrical connection of towing and towed vehicles 7-pole connector type 24 S (supplementary) for vehicles with 24 V nominal supply voltage4 ISO 12098, Road vehicles Connectors for the electrical connection of towing and towed vehicles 15-pole connector for vehicles with
36、 24 V nominal supply voltage5 ISO 16750 (all parts), Road vehicles Environmental conditions and testing for electrical and electronic equipment6 DIN 72601 (all parts), Lamps for road vehicles7 ECE-R37, Filament lamps of power-driven vehicles and their trailers 6 ISO 2012 All rights reservedBS ISO 13
37、207-1:2012BS ISO 13207-1:2012ISO 13207-1:2012(E) ISO 2012 All rights reservedICS 43.040.20; 43.040;30Price based on 6 pagesThis page deliberately left blankBSI is the independent national body responsible for preparing British Standards and other standards-related publications, information and servi
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