Fault detection in an onboard computing system

Abstract

A computer implemented method of detecting a fault in an onboard computing system (200) comprising: recording a log of messages transmitted on a databus (101) of the onboard computing system for a rolling timespan (116) according to a rule (124) stored in a memory system of the onboard computing system; detecting a target message-transmission event associated with the rule; 2024/236267 retrieving, in response to detecting the target event, the log of messages; determining whether the log complies with a valid digital chain associated with the rule, the valid digital chain comprising a group of messages associated with the target message-transmission event; and in response to the log failing to comply with the valid digital chain of the rule; storing or maintaining the log in a log database.

Dependencies are inferred from the claim text.