ChinaAutoRegs｜GB/T 43253.4-2023英文版翻译 道路车辆 功能安全审核及评估方法 第4部分：硬件层面

Road Vehicles—Functional Safety Audit and Assessment Method—Part 4: Hardware Level

CONTENTS

Foreword

Introduction

1 Scope

2 Normative References

3 Terms and Definitions

4 General Requirements

5 Hardware Safety Requirements

5.1 Objectives

5.2 Inputs to audit and assessment

5.3 Requirements for audit and assessment

6 Hardware Design

6.1 Objectives

6.2 Inputs to audit and assessment

6.3 Requirements for audit and assessment

7 Evaluation of the Hardware Architectural Metrics

7.1 Objectives

7.2 Inputs to audit and assessment

7.3 Requirements for audit and assessment

8 Evaluation of Safety Goal Violations due to Random Hardware Failures

8.1 Objectives

8.2 Inputs to audit and assessment

8.3 Requirements for audit and assessment

9 Hardware Integration and Verification

9.1 Objectives

9.2 Inputs to audit and assessment

9.3 Requirements for audit and assessment

10 Evaluation of Hardware Elements

10.1 Objectives

10.2 Inputs to audit and assessment

10.3 Requirements for audit and assessment

Annex A (Informative) Hardware Safety Requirements

Annex B (Informative) Hardware Design

Annex C (Informative) Evaluation of the Hardware Architectural Metrics

Annex D (Informative) Evaluation of Safety Goal Violations due to Random Hardware Failures

Annex E (Informative) Hardware Integration and Verification

Annex F (Informative) Evaluation of Hardware Elements

1 SCOPE

This document specifies the functional safety related activities and work products for the safety-related electrical and/or electronic (E/E) systems at the hardware level, and the requirements for and methods of making functional safety audit and assessment, so as to check and verify the compliance of the development process and work products with the functional safety.

This document is applicable to the safety-related systems that include one or more E/E systems and that are installed in series production road vehicles, excluding mopeds.

This document is not applicable to the specific E/E systems in special purpose vehicles such as E/E system designed for drivers with disabilities.

2 NORMATIVE REFERENCES

The following normative documents contain provisions which, through normative reference in this text, constitute essential provision of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendment) applies.

GB/T 34590.1~ GB/T 34590.12-2022 Road vehicles – Functional safety

GB/T 43253.1-2023 Road vehicles—Functional safety audit and assessment method—Part 1: General requirements

3 TERMS AND DEFINITIONS

For the purpose of this document, the terms and definitions given in GB/T 34590.1-2022 apply.

4 GENERAL REQUIREMENTS

For the purpose of this document, the audit and assessment requirements specified in GB/T 43253.1-2023 apply.

The functional safety audit and assessment at the hardware level mainly involve the following information:

 Specification of hardware safety requirements;

 Hardware design;

 Evaluation of the hardware architectural metrics;

 Evaluation of safety goal violations due to random hardware failures;

 Hardware integration and verification;

 Evaluation of hardware elements.

Through audit and assessment, check the functional safety development at the hardware level based on evidences to confirm that:

 The hardware safety requirements are appropriate and complete;

 Ensure the hardware can fulfill the hardware functional safety requirements and meet the hardware-software interface (HSI) specification, through design and verification;

 Provide evidence based on the hardware architectural metrics for the suitability of the hardware architectural design of the item with respect to detection and control of safety-related random hardware failures;

 Ensure the hardware developed meets the hardware safety requirements;

 Ensure the functional behavior of hardware elements is adequate to meet the allocated safety requirements.

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