V-model and automotive validation
V-model and automotive validation: Functional safety evaluates hazards at system level rather than labeling one isolated component simply safe/unsafe. The page also includes a worked example and measurement sequence.
Technical frame
V-model and automotive validation: Functional safety evaluates hazards at system level rather than labeling one isolated component simply safe/unsafe. The page also includes a worked example and measurement sequence.
The technical values here expose the standard, protocol or physical relationship directly; model-specific service values are linked through the matching model/variant dossier.
The goal is not only to define the term but to let the reader calculate and interpret what the data means in a scan, scope or physical test.
Concrete technical facts
- Functional safety evaluates hazards at system level rather than labeling one isolated component simply safe/unsafe.
- In ISO 26262 context, ASIL risk classification is derived using Severity, Exposure and Controllability.
- The V-model pairs requirements/design/implementation levels with corresponding verification and validation levels.
- Traceability follows change impact from requirement through implementation to test evidence.
- Fault injection and safety-mechanism testing provide different evidence from nominal functional testing.
- Automotive SPICE process capability evaluates development-process maturity rather than proving a product has no defects.
Worked example
- Traceability example: Safety requirement SR-042 → software requirement SWR-118 → implementation module → unit test UT-118 → integration test IT-042 remains linked end-to-end.
Measurement and verification sequence
- Check traceability from requirement ID to test case.
- Record safety-mechanism activation/fault-injection results.
- Link coverage and failed tests back to requirements.
- Lock software/hardware version to the test evidence.
Fault-separation logic
- Is a valid command present and are power/ground/network healthy?
- Does feedback follow the command?
- Does an independent physical measurement confirm the output?
- Is the fault limited to a specific temperature/load/speed condition?
- Does the result remain stable when the original condition is repeated after repair?
Technical sources
Continue investigating
Model-specific real technical data · Measurement references · Technical diagnostic atlas