1、BRITISH STANDARDBS ISO 26021-1:2008Road vehicles End-of-life activation of on-board pyrotechnic devices Part 1: General information and use case definitionsICS 43.040.80g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40
2、g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS ISO 26021-1:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2008 BSI 2008ISBN 978 0 580 56887 9National forewordThis British Standard is the UK implementation
3、 of ISO 26021-1:2008.The UK participation in its preparation was entrusted to Technical Committee AUE/16, Electrical and electronic equipment.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessa
4、ry provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate CommentsReference numberISO 26021-1:2008(E)INTERNATIONAL STANDARD ISO26021-1First edition
5、2008-05-15Road vehicles End-of-life activation of on-board pyrotechnic devices Part 1: General information and use case definitions Vhicules routiers Activation de fin de vie des dispositifs pyrotechniques embarqus Partie 1: Informations gnrales et dfinitions de cas dusage BS ISO 26021-1:2008ii iiiC
6、ontents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Symbols and abbreviated terms . 2 5 Conventions 3 6 Document overview 3 7 Use case descriptions 3 7.1 Overview 3 7.2 End-of-life activation of on-board pyrotechnic devices Use cases 4 7.2.1 Us
7、e case summary . 4 7.2.2 Use case 1: Information about standard communication 4 7.2.3 Use case 2: Information about use of the ACL as a data communication line 5 7.2.4 Use case 3: Information about use of the ACL as a signal wire 5 8 Airbag deployment via on-board diagnostic architecture 5 8.1 Confi
8、guration 5 8.2 Example of a basic configuration . 6 8.3 Additional communication line . 7 8.3.1 Example of a hardware configuration with an ACL. 7 8.3.2 Use of the ACL as a bidirectional communication line. 7 8.3.3 Use of the ACL for pulse width modulated signals. 7 Bibliography . 8 BS ISO 26021-1:2
9、008iv 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 whi
10、ch 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 m
11、atters 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 cir
12、culated 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 respon
13、sible for identifying any or all such patent rights. ISO 26021-1 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 p
14、yrotechnic 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 NOTE Additional parts w
15、ill be introduced as necessary to take into account requirements not yet covered by the standard. BS ISO 26021-1:2008vIntroduction ISO 26021 describes a method for the in-vehicle deployment of pyrotechnically activated components (also referred to as pyrotechnic components or pyrotechnic devices) in
16、 cars. Worldwide, nearly all new vehicles are equipped with one or more safety systems. Advanced protection systems using pyrotechnic actuators are becoming more common. All components which contain pyrotechnic substances should be handled in the same way. Recycling of these vehicles requires a new
17、process which ensures that the deployment of all the pyrotechnic components will be safe and cost-efficient. Based on the harmonization of the on-board diagnostics (OBD) interface, there is an opportunity to use this interface for on-board deployment, utilizing the same tools and processes. The repr
18、esentatives of the global automobile industry have decided the following: automobile manufacturers do not support reuse as an appropriate treatment method for pyrotechnic devices; automobile manufacturers believe treatment of pyrotechnic devices is required before shredding; automobile manufacturers
19、 support in-vehicle deployment as the preferred method. Based on this decision, the four major automobile manufacturer associations (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
20、(PDT). The vision is that, one day, a dismantler will need only one tool without any accessories in order to deploy all the pyrotechnic devices inside an end-of-life vehicle (ELV). The target is to use an existing interface to the car. This International Standard has been developed in order to defin
21、e common requirements for communication between the tool and the pyrotechnic control unit (PCU) when deploying pyrotechnic devices. This communication should use earlier standardized hardware and software. Based on emissions-related diagnostics (see ISO 15031-3), the physical layer specified for leg
22、islated OBD and the diagnostic connector was defined. The software used is an implementation of diagnostic services and transaction protocols on CAN. Because of the automobile manufacturers specific requirements and safety concepts, an additional communication line (ACL) may be used beside the basic
23、 CAN communication method. This line is usable in two different ways: as an additional communication line with bidirectional communication for additional communication functions; as an additional communication line with a pulse width modulated signal for hardware safing. Although primarily intended
24、for airbag deployment systems, ISO 26021 has also been developed to meet requirements for other pyrotechnically activated systems. BS ISO 26021-1:2008vi To achieve this, this International Standard makes use of on-board diagnostics and is based on the open systems interconnection (OSI) basic referen
25、ce model in accordance with ISO/IEC 7498-1 and ISO/IEC 10731 which structures communication systems into seven layers. When mapped on this model, the services used by a diagnostic tester (client) and an electronic control unit (ECU) (server) are broken down in accordance with Table 1, as follows: a
26、pyrotechnic devices deployment application using application services, specified in this International Standard; application services (layer 7), specified in ISO 14229-1; communication services (layers 1 to 6). Table 1 Deployment of pyrotechnic devices Specifications applicable to the OSI layers App
27、licability OSI layer Airbag deployment application User application ISO 26021-1 Application (layer 7) ISO 14229-1/ISO 15765-3 Presentation (layer 6) Session (layer 5) ISO 14229-1 Transport (layer 4) ISO 15765-2 Network (layer 3) ISO 15765-2 Data link (layer 2) ISO 11898/ISO 26021-4 and ISO 26021-5 S
28、even layers in accordance with ISO/IEC 10731 Physical (layer 1) ISO 11898/ISO 26021-4 and ISO 26021-5 For the deployment of pyrotechnic devices via on-board diagnostics by a dismantler, it is required that future modifications to this International Standard provide long-term backwards compatibility.
29、 BS ISO 26021-1:20081Road vehicles End-of-life activation of on-board pyrotechnic devices Part 1: General information and use case definitions 1 Scope This part of ISO 26021 gives an overview of the structure of ISO 26021 and the way it has been divided into parts, as well as showing the relationshi
30、p between the parts. In addition, it outlines the use case scenarios in which the ISO 26021 document set will be used. It also defines terminology that is used throughout the ISO 26021 document set. 2 Normative references The following referenced documents are indispensable for the application of th
31、is document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO/IEC 7498-1, Information technology Open Systems Interconnection Basic Reference Model: The Basic Model ISO/IEC 10731, Infor
32、mation technology Open Systems Interconnection Basic Reference Model Conventions for the definition of OSI services 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
33、emissions-related diagnostics Part 3: Diagnostic connector and related electrical circuits, specification and use ISO 15765-2, Road vehicles Diagnostics on Controller Area Networks (CAN) Part 2: Network layer services ISO 15765-3, Road vehicles Diagnostics on Controller Area Networks (CAN) Part 3: I
34、mplementation of unified diagnostic services (UDS on CAN) ISO 15765-4, Road vehicles Diagnostics on Controller Area Networks (CAN) Part 4: Requirements for emissions-related systems ISO 26021-2, Road vehicles End-of-life activation of on-board pyrotechnic devices Part 2: Communication requirements I
35、SO 26021-4, Road vehicles End-of-life activation of on-board pyrotechnic devices Part 4: Additional communication line with bidirectional communication ISO 26021-5, Road vehicles End-of-life activation of on-board pyrotechnic devices Part 5: Additional communication line with pulse width modulated s
36、ignal BS ISO 26021-1:20082 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 14229-1 and the following apply. 3.1 activation/deployment of pyrotechnic devices burning off all pyrotechnic substances inside an end-of-life vehicle to activate/deploy the d
37、evices concerned, the aim being to avoid any device containing such substances coming into the shredding process 3.2 emissions-related diagnostic specific element of the on-board diagnosis in accordance with ISO 14229-1 and ISO 15031-3 3.3 end-of-life vehicle ELV vehicle prepared to be scrapped e.g.
38、 as defined in Article 1(a) of Directive 75/442/EEC, but containing all essential components necessary for normal usage NOTE This means that the communication network and the power supply to the pyrotechnic devices in the vehicle are functioning. 3.4 pyrotechnic control unit PCU electronic control u
39、nit in the vehicle network which controls the activation of pyrotechnic devices 3.5 pyrotechnic device deployment tool tool designed to be plugged into the OBD interface in order to communicate via the internal computer network in an end-of-life vehicle with all control units which are able to activ
40、ate pyrotechnic devices NOTE This tool will comprise e.g. a computer, a connection between the computer and the diagnostic connector, and some software. 3.6 safing mechanism whose primary purpose is to prevent an unintended functioning of the PCU processor prior to detection of a crash situation 3.7
41、 safing unit part of the PCU (e.g. an electromechanically operated switch or a separate processor) that allows the pyrotechnic component deployment microprocessor (P) to deploy the pyrotechnic devices via the driver stage 4 Symbols and abbreviated terms ACL additional communication line CAN controll
42、er area network ELV end-of-life vehicle OBD on-board diagnostics PCU pyrotechnic control unit BS ISO 26021-1:20083PDT pyrotechnic device deployment tool RAM random access memory SRS supplementary restraint system P microprocessor 5 Conventions ISO 26021 is based on the conventions for the definition
43、 of OSI services (see ISO/IEC 10731) as they apply to diagnostic services. 6 Document overview The ISO 26021 document set provides an implementer with all documents and references required to support the end-of-life activation of on-board pyrotechnic devices in accordance with the requirements of re
44、levant national legislation for the handling and storage of pyrotechnic devices in vehicles. ISO 26021-1 (this part) gives general information and use case definitions. It provides an overview of the document set along with use case definitions and a common set of resources (definitions, references)
45、 for use with all subsequent parts. ISO 26021-2 gives a description of the general communication requirements when no additional communication line (ACL) is used. The general purpose is communication between tool and control unit by standard diagnostic services. ISO 26021-3 specifies the requirement
46、s for the PDT, based on the functionality of the PCU and the communication network. In addition, it defines the functionality test method (hardware/software). ISO 26021-4 specifies an additional communication line with bidirectional communication and describes the specific requirements for this comm
47、unication method which uses a direct HW connection between tool and PCUs. ISO 26021-5 specifies an additional communication line with a pulse width modulated signal. It uses the direct HW connection described in ISO 26021-4 for systems with a specific safing concept. 7 Use case descriptions 7.1 Over
48、view The end-of-life activation of on-board pyrotechnic devices is, apart from actual removal, the only method of making sure that no pyrotechnical substances are left in an ELV. On-board activation is deemed to be the most effective and the safest method. To avoid a dismantler needing different too
49、ls, or at least different adapters, for different vehicles, the diagnostic connector was selected as the hardware connector to the vehicle. To have visual and audible verification that activation has been carried out successfully, it is necessary to deploy the pyrotechnic devices one by one. In the case of dual-stage devices, it may nevertheless not be possible after activation to detect whether both stages have been deployed. BS ISO 26021-1:20084 To make sure that this sequential
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