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GB/T 43253.4-2023: Road vehicles - Functional safety audit and assessment method - Part 4: Hardware level Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 43253.4-2023: Road vehicles - Functional safety audit and assessment method - Part 4: Hardware level---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT43253.4-2023 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 43.040 CCS T 35 Road vehicles - Functional safety audit and assessment method - Part 4.Hardware level Issued on. NOVEMBER 27, 2023 Implemented on. NOVEMBER 27, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the People’s Republic of China. Table of ContentsForeword... 4 Introduction... 5 1 Scope... 7 2 Normative references... 7 3 Terms and definitions... 7 4 General requirements... 7 5 Hardware safety requirements... 8 5.1 Objective... 8 5.2 Inputs to audit and assessment... 9 5.3 Requirements for audit and assessment... 9 6 Hardware design... 11 6.1 Objective... 11 6.2 Inputs to audit and assessment... 11 6.3 Requirements for audit and assessment... 12 7 Assessment of hardware architecture metrics... 15 7.1 Objective... 15 7.2 Inputs to audit and assessment... 15 7.3 Requirements for audit and assessment... 16 8 Assessment of random hardware failures leading to safety goal violation... 17 8.1 Objective... 17 8.2 Inputs to audit and assessment... 17 8.3 Requirements for audit and assessment... 17 9 Hardware integration and verification... 19 9.1 Objective... 19 9.2 Inputs to audit and assessment... 19 9.3 Requirements for audit and assessment... 19 10 Hardware elements assessment... 21 10.1 Objective... 21 10.2 Inputs to audit and assessment... 21 10.3 Requirements for audit and assessment... 22 Appendix A (Informative) Hardware safety requirements... 25 Appendix B (Informative) Hardware design... 31 Appendix C (Informative) Assessment of hardware architecture metrics... 40 Appendix D (Informative) Assessment of random hardware failure leading to safety goal violation... 43 Appendix E (Informative) Hardware integration and verification... 47 Appendix F (Informative) Hardware element assessment... 51ForewordThis document was drafted in accordance with the rules provided in GB/T 1.1-2020 Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents. This document is Part 4 of GB/T 43253 Road vehicles - Functional safety audit and assessment method. The following parts have been issued for GB/T 43253. -- Part 1.General requirements; -- Part 2.Concept phase and system level; -- Part 3.Software level; -- Part 4.Hardware level. Please note that some of the contents of this document may involve patents. The issuing organization of this document is not responsible for identifying patents. This document was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This document shall be under the jurisdiction of National Technical Committee of Auto Standardization (SAC/TC 114). Drafting organizations of this document. China Automotive Technology and Research Center Co., Ltd., Imotion Automotive Technology (Suzhou) Co. Ltd., Beijing Horizon Robotics Technology R&D Co., Ltd., Nanjing SemiDrive Technology Ltd., Infineon Technologies Center of Competence (Shanghai) Co., Ltd., China FAW Group Corporation, China Changan Automobile Group Co., Ltd., Neusoft Ruichi Automotive Technology (Shanghai) Co., Ltd., Shanghai Motor Vehicle Inspection Certification & Tech Innovation Center Co., Ltd., Shanghai Hesai Technology Co., Ltd., Shenzhen DJI Zhuojian Technology Co., Ltd., Schaeffler (China) Co., Ltd., Beijing Changan Automobile Engineering Technology Research Co., Ltd., Beijing National New Energy Vehicle Technology Innovation Center Co., Ltd. Main drafters of this document. Song Weijin, Cai Xiang, Wei Bin, Tang Shanan, Fu Yue, Shang Shiliang, Li Bo, Shao Haihe, Wen Jiwei, Wang Xiaoyi, Wang Yu, Sun Yuyang, Zhao Xin, Liu Hui, Zhang Xiaoliang, Zha Xiaodong, Li Zhaolin.1 ScopeThis document specifies the requirements and methods for carrying out functional safety audit and assessment of functional safety-related activities and work results at the hardware level of safety-related electrical/electronic (E/E) systems, to check and judge the compliance of the development process and work results with functional safety. This document applies to safety-related systems containing one or more electrical/electronic (E/E) systems installed on production road vehicles other than mopeds. This document does not apply to specific electrical/electronic (E/E) systems in special purpose vehicles, for example, vehicle systems designed for disabled drivers.2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the version corresponding to that date is applicable to this document; for undated references, the latest version (including all amendments) is applicable to this document. GB/T 34590.1~34590.12-2022, Road vehicles - Functional safety GB/T 43253.1-2023, Road vehicles - Functional safety audit and assessment method - Part 1.General requirements3 Terms and definitionsFor the purposes of this document, the terms and definitions given in GB/T 34590.1- 2022 apply.4 General requirementsThe audit and assessment requirements defined in GB/T 43253.1-2023 apply to this document. Functional safety audit and assessment at the hardware level mainly involves the following contents. -- definition of hardware safety requirements; -- hardware design; -- assessment of hardware architecture metrics; -- assessment of random hardware failures leading to violations of safety goals; -- hardware integration and verification; -- hardware element assessment. Through audit and assessment, the functional safety development at the hardware level is judged based on evidence to meet.5 Hardware safety requirements5.1 Objective The objective of this chapter is to audit and assess the definition document as a safety requirement for functional safety hardware to check whether its definition meets the needs of functional safety development and provide evidence to prove. 5.2 Inputs to audit and assessment In order to carry out the review and assessment process specified in this chapter, the following inputs shall be available. 5.3 Requirements for audit and assessment The audit and assessment of hardware safety requirements shall cover the check items in Table 1, Table 2, and Table 3.6 Hardware design6.1 Objective The objective of this chapter is to audit and assess the hardware design to check whether it meets the needs of functional safety hardware design and provide evidence to prove. a) Created a hardware design. Support safety-oriented analysis, consider the results 6.2 Inputs to audit and assessment In order to carry out the review and assessment process specified in this chapter, the following inputs shall be available. 6.3 Requirements for audit and assessment For the audit and assessment of hardware design, the check items in Table 4, Table 5, Table 6, and Table 7 shall be covered.7 Assessment of hardware architecture metrics7.1 Objective The objective of this chapter is to assess the effectiveness of the related item architecture or hardware component architecture in dealing with random hardware failures by assessing whether the hardware architecture metrics (including single-point failure metric SPFM and latent failure metric LFM) reach the target value. 7.2 Inputs to audit and assessment In order to carry out the review and assessment process specified in this chapter, the following inputs shall be available. 7.3 Requirements for audit and assessment The audit and assessment of the assessment of hardware architecture metrics shall cover the check items in Table 8.8 Assessment of random hardware failures leading to safety goal violation8.1 Objective The objective of this chapter is to assess whether the residual risk is low enough by assessing random hardware failures that lead to safety goal violation. 8.2 Inputs to audit and assessment In order to carry out the review and assessment process specified in this chapter, the following inputs shall be available. 8.3 Requirements for audit and assessment The audit and assessment for the assessment of random hardware failures that result in safety goal violation shall cover the check items in Table 9.9 Hardware integration and verification9.1 Objective The objective of this chapter is to audit and assess the activities and results related to hardware integration and verification to check whether the hardware design meets the hardware functional safety requirements and the corresponding ASIL level. 9.2 Inputs to audit and assessment In order to carry out the review and assessment process specified in this chapter, the following inputs shall be available. 9.3 Requirements for audit and assessment The audit and assessment of hardware integration and verification shall cover the check items in Table 10, Table 11, and Table 12.10 Hardware elements assessment10.1 Objective The objective of this chapter is to audit and assess related work results such as the hardware element assessment plan, hardware element test plan, and hardware element assessment report, to provide evidence that the functional performance of the hardware elements is sufficient to meet the assigned safety requirements, thereby ensuring that the risk of safety goal violation or safety requirements resulting from systemic failure of hardware elements is sufficiently low. 10.2 Inputs to audit and assessment In order to carry out the review and assessment process specified in this chapter, the following inputs shall be available. 10.3 Requirements for audit and assessment The audit and assessment of hardware element assessment shall cover the check items in Table 13, Table 14, and Table 15. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. 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