Road vehicles -- End-of-life activation of on-board pyrotechnic devices

ISO 26021-3:2009 specifies the technical requirements to realize tool requirements for end-of-life activation of on-board pyrotechnic devices. It defines a test tool for ISO 26021 disposal functionality as well as the requirement for the final pyrotechnical device deployment tool (PDT). The focus is the definition of the human interface and the interfaces to the vehicle. It also defines general requirements for tests to validate the disposal functionality of the pyrotechnic control unit (PCU). It specifies two tool use-cases. Tool use-case 1 – deployment test tool (DTT): a development tool used to test and validate the PCU; the target users of this tool are the engineers of the PCU suppliers and the original equipment manufacturers (OEMs); the use case defines the human interface, the interfaces to the vehicle (CAN & ACL) and concrete test sequences. Tool use-case 2 – pyrotechnic device deployment tool (PDT): the final tool that is used to dispose pyrotechnical devices in vehicles; the target users of this tool are dismantlers; the use case defines the human interface, the interfaces to the vehicle (CAN & ACL), the environmental conditions and the deployment sequences.

Véhicules routiers -- Activation de fin de vie des dispositifs pyrotechniques embarqués

General Information

Status
Published
Publication Date
07-May-2009
Current Stage
9092 - International Standard to be revised
Start Date
30-Jun-2020
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ISO 26021-3:2009 - Road vehicles -- End-of-life activation of on-board pyrotechnic devices
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INTERNATIONAL ISO
STANDARD 26021-3
First edition
2009-05-15
Road vehicles — End-of-life activation of
on-board pyrotechnic devices —
Part 3:
Tool requirements
Véhicules routiers — Activation de fin de vie des dispositifs
pyrotechniques embarqués —
Partie 3: Exigences de l'outil
Reference number
ISO 26021-3:2009(E)
ISO 2009
---------------------- Page: 1 ----------------------
ISO 26021-3:2009(E)
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ii © ISO 2009 – All rights reserved
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ISO 26021-3:2009(E)
Contents Page

Foreword............................................................................................................................................................ iv

Introduction ........................................................................................................................................................ v

1 Scope ..................................................................................................................................................... 1

2 Normative references ........................................................................................................................... 1

3 Terms and definitions........................................................................................................................... 2

4 Symbols and abbreviated terms ......................................................................................................... 3

5 Conventions .......................................................................................................................................... 3

6 General requirements and assumptions............................................................................................4

7 Description of tool use case 1 – deployment test tool (DTT)........................................................... 4

7.1 General................................................................................................................................................... 4

7.2 Hardware requirements for deployment test tool (DTT)................................................................... 5

7.3 General requirements for tests performed with deployment test tool (DTT) ................................. 7

8 Description of tool use case 2 – pyrotechnic device deployment tool (PDT) ................................ 9

8.1 User interface example of a PDT......................................................................................................... 9

8.2 Basic design requirements for the PDT ...........................................................................................10

8.3 Example sequence for deployment method version 1 ................................................................... 11

Bibliography ..................................................................................................................................................... 13

© ISO 2009 – All rights reserved iii
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ISO 26021-3:2009(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

technical committees. Each 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

International 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 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 26021-3 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 3,

Electrical and electronic equipment.

ISO 26021 consists of the following parts, under the general title Road vehicles — End-of-life activation of

on-board pyrotechnic devices:
⎯ Part 1: General information and use case definitions
⎯ Part 2: Communication requirements
⎯ Part 3: Tool requirements
⎯ Part 4: Additional communication line with bidirectional communication
⎯ Part 5: Additional communication line with pulse width modulated signal
iv © ISO 2009 – All rights reserved
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ISO 26021-3:2009(E)
Introduction

Worldwide, nearly all new vehicles are equipped with one or more safety systems. This can include advanced

protection systems based on pyrotechnic actuators. All components which contain pyrotechnic substances

can be handled in the same way.

Recycling these vehicles demands a new process to ensure that the deactivation of airbags is safe and

cost-efficient. Due to the harmonization of the on-board diagnostic (OBD) interface, there is a possibility of

using it for on-board deployment, which is based on the same tools and processes.

Representatives of the global automobile industry agreed that automobile manufacturers

⎯ do not support reuse as an appropriate treatment method for pyrotechnic devices,

⎯ believe treatment of pyrotechnic devices is required before shredding, and
⎯ support in-vehicle deployment as the preferred method.

Based on this agreement, the four big associations of automobile manufacturers (ACEA, Alliance, JAMA and

KAMA) started to develop a method for the “in-vehicle deployment of pyrotechnic components in cars with the

pyrotechnic device deployment tool (PDT)”. The objective is that in the future a dismantler will use only one

tool without any accessories to deploy all pyrotechnic devices inside an end-of-life vehicle (ELV) by using an

existing interface to the car.

It is necessary to test and to validate the development of the disposal functionality inside the pyrotechnical

control unit (PCU).
© ISO 2009 – All rights reserved v
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INTERNATIONAL STANDARD ISO 26021-3:2009(E)
Road vehicles — End-of-life activation of on-board pyrotechnic
devices —
Part 3:
Tool requirements
1 Scope

This part of ISO 26021 specifies the technical requirements to realize tool requirements for end-of-life

activation of on-board pyrotechnic devices. It defines a test tool for ISO 26021 disposal functionality as well as

the requirement for the final pyrotechnical device deployment tool (PDT). The focus is the definition of the

human interface and the interfaces to the vehicle. It also defines general requirements for tests to validate the

disposal functionality of the PCU. It specifies two tool use cases.
⎯ Tool use case 1 – deployment test tool (DTT):
⎯ a development tool used to test and validate the PCU;

⎯ the target users of this tool are the engineers of the PCU suppliers and the OEMs;

⎯ the use case defines the human interface, the interfaces to the vehicle (CAN & ACL) and concrete

test sequences.
⎯ Tool use case 2 – pyrotechnic device deployment tool (PDT):
⎯ the final tool that is used to dispose of pyrotechnical devices in vehicles;
⎯ the target users of this tool are dismantlers;

⎯ the use case defines the human interface, the interfaces to the vehicle (CAN & ACL), the

environmental conditions and the deployment sequences.
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.

ISO 14229-1, Road vehicles — Unified diagnostic services (UDS) — Part 1: Specification and requirements

ISO 15031-3, Road vehicles — Communication between vehicle and external equipment for emissions-related

diagnostics — Part 3: Diagnostic connector and related electrical circuits, specification and use

ISO 15031-4, Road vehicles — Communication between vehicle and external equipment for emissions-related

diagnostics — Part 4: External test equipment

ISO 26021-1, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 1: General

information and use case definitions
© ISO 2009 – All rights reserved 1
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ISO 26021-3:2009(E)

ISO 26021-2:2008, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 2:

Communication requirements

ISO 26021-4:2008, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 4:

Additional communication line with bidirectional communication

ISO 26021-5:2008, Road vehicles — End-of-life activation of on-board pyrotechnic devices — Part 5:

Additional communication line with pulse width modulated signal
3 Terms and definitions

For the purposes of this document, the definitions given in ISO 14229-1 and the following apply.

3.1
key

data value sent from the external test equipment to the on-board controller in response to the seed for gaining

access to the locked services
3.2
pyrotechnic device deployment tool

tool to be plugged into the diagnostic connector in order to communicate via the in-vehicle network with all

control units which are able to activate pyrotechnic devices, implementing the communication sequence as

defined in ISO 26021-1, ISO 26021-2, ISO 26021-4 and ISO 26021-5, to trigger the PCUs to perform the

required deployment sequence
3.3
pyrotechnic control unit

electronic control unit on the vehicle network, which controls the activation of pyrotechnic devices

3.4
safing unit

part of the PCU, for example an electromechanical switch or separate processor, that allows the deployment

microprocessor (µP) to deploy the pyrotechnic devices via the driver stage
3.5
safing

mechanism of which the primary purpose is to prevent an unintended functioning of the PCU processor prior

to detection of a crash situation
3.6
ScrappingProgramModule

program module responsible for firing the selected pyrotechnic device loops one by one

3.7
ScrappingProgramModuleLoader

program module loader responsible for converting the scrapping program module to an executable format

3.8
seed

data value sent from the on-board controller to the external test equipment, which is processed by the security

algorithm, to produce the key
2 © ISO 2009 – All rights reserved
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ISO 26021-3:2009(E)
4 Symbols and abbreviated terms
ACL additional communication line
AB airbag
CAN controller area network
DTT deployment test tool
DTT-LB deployment test tool load box
ELV end-of-life vehicle
GND ground
ID identification
IDIS international dismantling information system
I/O input/output
LSB least significant bit
MSB most significant bit
OBD on-board diagnostic
OEM original equipment manufacturer
PC personal computer
PCU pyrotechnic control unit
PDT pyrotechnic device deployment tool
PWM pulse width modulated
RAM random access memory
SRS supplementary restraint system
TTL transistor–transistor logic
µP microprocessor
U battery voltage
BATT
5 Conventions

ISO 26021 is based on the conventions discussed in the OSI. Service Conventions (ISO/IEC 10731:1994) as

they apply for diagnostic services.

1) To create IDIS, most of the OEMs worldwide provide all legally necessary information to the dismantlers (for further

information, see Reference [5]).
© ISO 2009 – All rights reserved 3
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ISO 26021-3:2009(E)
6 General requirements and assumptions
CAN communication: see ISO 26021-2 for detailed information.
ACL line with PWM: see ISO 26021-5 for detailed information.

ACL line with bidirectional communication: see ISO 26021-4 for detailed information.

The PCU is not powered by the DTT. A standard diagnostic connector (male) in accordance with ISO 15031-3

is used to connect the DTT/PDT.
7 Description of tool use case 1 – deployment test tool (DTT)
7.1 General
Figure 1 shows an example of a possible setup.
Key
1 standard PC 7 diag out
2 CAN interface 8 ISO 15031-3 type B male connector
3 I/O interface 9 ISO 15031-3 female connector
4 input for CAN interface 10 OEM-specific interface
5 input for IO interface 11 PCU with OEM-specific connector
6 deployment test tool load box

NOTE The OEM-specific interface is used to connect the female ISO 15031-3 connector with the OEM-specific PCU

connector.
Figure 1 — Deployment test tool system overview
4 © ISO 2009 – All rights reserved
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ISO 26021-3:2009(E)
7.2 Hardware requirements for deployment test tool (DTT)
7.2.1 Simulation of CAN messages

To simulate all required CAN messages in accordance with ISO 26021-2 a CAN interface is required.

7.2.2 Simulation of ACL with PWM

The DTT shall be able to generate a PWM signal in accordance with ISO 26021-5 and to modify the timing in

accordance with Table
...

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