ISO 13207-1:2012
(Main)Road vehicles — LED lamp characteristics for bulb compatible failure detection — Part 1: LED lamps used as direction indicators
Road vehicles — LED lamp characteristics for bulb compatible failure detection — Part 1: LED lamps used as direction indicators
This 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 lamps on the drawn vehicle to be compatible with that for bulbs when analysed by the towing unit.
Véhicules routiers — Caractéristiques des lampes LED pour détection de défaut compatible avec l'ampoule — Partie 1: Lampes LED utilisées comme feux indicateurs de direction
General Information
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 13207-1
First edition
2012-02-15
Road vehicles — LED lamp characteristics
for bulb compatible failure detection —
Part 1:
LED lamps used as direction indicators
Véhicules routiers — Caractéristiques des lampes LED pour détection
de défaut compatible avec l’ampoule —
Partie 1: Lampes LED utilisées comme feux indicateurs de direction
Reference number
ISO 13207-1:2012(E)
©
ISO 2012
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ISO 13207-1:2012(E)
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ISO 13207-1:2012(E)
Foreword
ISO (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
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established has the right to be represented on that committee. International organizations, governmental and
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Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
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The main task of technical committees is to prepare International Standards. Draft International Standards
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 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 vehicles — LED lamp characteristics for
bulb compatible failure detection:
— Part 1: LED lamps used as direction indicators
© ISO 2012 – All rights reserved iii
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INTERNATIONAL STANDARD ISO 13207-1:2012(E)
Road vehicles — LED lamp characteristics for bulb compatible
failure detection —
Part 1:
LED lamps used as direction indicators
1 Scope
This 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 lamps on the drawn vehicle to be compatible with
that for bulbs when analysed by the towing unit.
2 Terminals
The 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 electronic control units
(ECUs), which drive the trailer direction indicator lamps as described in ISO 4082.
3 Functional description
3.1 Principle
Lamp-failure monitoring electronics are required for mandatory mounted direction-indicator functions. For this
purpose, the LED direction-indicator function generates 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
flasher interprets whether the LED direction indicator fails on the basis of this pulse. The result should be used
to inform the driver accordingly.
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ISO 13207-1:2012(E)
Key
1 first process
2 second process
3 non-failure
4 failure
5 voltage: power supply of direction indicator during two flashing processes
6 current of LED direction indicator during two flashing processes, the first with, and second without, current control
pulse added
I current
I nominal LED lamp current
2
I I + control pulse current
1 2
T time
T starting point of the designated pulse time frame
1
T end of the designated pulse time frame
2
T earliest start point for the control pulse
3
T latest end point for the control pulse
4
T time f
...
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