Q1: Does functional safety start with design?
A1: To be precise, if it is necessary to comply with ISO 26262 products, relevant safety activities should be planned at the beginning of the project, a safety plan should be formulated, and the implementation of safety activities within the plan should be continuously promoted based on quality management until all design, development and verification activities are completed and a safety file is formed. During the period of accreditation review, functional safety audit to ensure the correctness of key work products and process compliance, and ultimately need to prove the degree of product compliance with ISO 26262 through functional safety assessment. Therefore, ISO 26262 covers the full life cycle safety activities of safety-related electronic/electrical products.
Q2: What is the functional safety certification process for chips?
A2: According to ISO 26262-10 9.2.3, we can know that the chip functions as a security element out of context (SEooC), and its development process usually involves parts 2,4(parts)5,8,9, if software development and manufacturing are not considered.
When it comes to the certification process, it needs to be determined according to the certification implementation rules of each certification body. Generally, in the entire chip development process, there will be 2 to 3 audit nodes, such as the audit of the planning stage, the audit of the design and development stage, and the audit of the test and verification stage.
Q3: What class does the smart cabin belong to?
A3: Generally, the safety-related electronic/electrical system around the intelligent cabin is ASIL B or below, which needs to be analyzed according to the actual use of the actual product, and the accurate ASIL level can be obtained through HARA, or the ASIL level of the product can be determined through the demand allocation of FSR.
Q4: For ISO 26262, what is the minimum unit that needs to be tested? For example, if we are a power device, do we also need to carry out ISO 26262 testing and verification when making vehicle gage levels?
A4: ISO 26262-8:2018 13.4.1.1 (Hardware elements assessment chapter) will divide the hardware into three types of elements, the first type of hardware elements are mainly discrete components, passive components, etc. Do not need to consider ISO 26262, only need to comply with vehicle regulations (such as AEC-Q). In the case of the second type of elements (temperature sensors, simple ADCs, etc.), it is necessary to look at the existence of internal safety mechanisms related to the safety concept to determine whether it needs to be considered for compliance with ISO 26262; If it is a Category 3 element (MCU, SOC, ASIC, etc.), it is required to comply with ISO 26262.
GRGTEST function safety service capability
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we have a technologically advanced functional safety team, focusing on functional safety (including industrial, rail, automotive, integrated circuit and other fields), information security and expected functional safety experts, with rich experience in the implementation of integrated circuit, component and overall functional safety. We can provide one-stop services for training, testing, auditing and certification for customers in different industries according to the safety standards of the corresponding industry.
Post time: Apr-15-2024
