Automotive Software Functional Safety - ISO 26262

Define functional safety and the safe product via ISO 26262 for electrical and electronic vehicle systems. Explore hazards from malfunctioning behavior and liability considerations within safety processes.

Identify hazards and perform hazard analysis and risk assessment (HARA) to set safety goals and ASILs, then derive functional safety requirements across hardware and software, with testing and audits.

Learn how the hazard analysis and risk assessment builds the chain of implications to derive ASIL, from item definitions to severity, exposure, and controllability, with examples.

Explore hazard analysis and risk assessment (HARA) through torque command scenarios, derive ASIL ratings from severity, probability, and controllability, and formulate safety goals to prevent undemanded or zero torque.

Derive functional safety requirements from the safety goal and ASIL, outlining fault detection, fault reaction, safe state, degradation concept for sensor, processor, and actuator faults with FTTI, FDTI, and FRTI.

Derive technical safety requirements from functional safety requirements, specifying fault detection, safe state transitions, and redundancy for accelerator pedal and vehicle speed data over CAN or Ethernet.

Derive software safety requirements via ASIL decomposition and error detection in a layered architecture, applying range and plausibility checks, diverse redundancy, and MISRA and Autosar guidelines.

Explore verification and validation of software, integration, and vehicle testing through static analysis, model-based checks, and test cases across unit to vehicle levels within the V-model framework.

Explore how traceability links safety requirements from goals to hardware and software, including test case connections. Learn change management with change requests, impact analysis, approvals, and software release documentation.

Assess tool impact and error detection to qualify software tools, determine TCL levels, and apply validation and evaluation measures aligned with ASIL requirements.