Dynamically re-configurable in-field self-test capability for automotive systems
AssigneeQUALCOMM Incorporated
InventorsKiran Kumar Malipeddi, Rahul Gulati
Life of this patent
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Abstract
Various embodiments include components (e.g., a processor in a vehicle advanced driver assistance system) configured to identify subsystems that require testing in order to verify their compliance with a safety requirement. The components may determine whether verification of compliance requires that the subsystems be tested at PON, at POFF, during runtime or a combination thereof, dynamically determine the achievable parallelism for testing the identified subsystems, dynamically determine coverage level requirements for performing or executing built in self tests (BISTs) on each identified subsystem, and perform or execute the BISTs on the subsystems at the determined level of parallel and at the determined coverage level.
Claims8
A method of in-field testing electronic components included in a vehicle, comprising:
- receiving, in a dedicated local supervisor safety manager component of a primary boot processor, a list of subsystems that are associated with a safety critical automotive application of the vehicle;
- determining, by the dedicated local supervisor safety manager component for each subsystem in the list of subsystems, whether verification of compliance with a safety requirement requires that the subsystem be tested at power-on (PON), at power-off (POFF), or during runtime;
- dynamically determining, by the dedicated local supervisor safety manager component for each subsystem in the list of subsystems, a coverage level required for performing a built in self test (BIST) on that subsystem;
- and
- performing BISTs on the subsystems at the determined coverage level;
- and
- transmitting, by the dedicated local supervisor safety manager component for each subsystem in the list of subsystems, a safety indication output to a global supervisor safety manager component based on the BISTs performed on the subsystems at the determined coverage level, wherein the safety indication output includes an error output, a fault output, an interrupt output, or any combination thereof.
Dependencies are inferred from the claim text.