Vehicle Diagnostics Architecture for Centralized Fault Triaging
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Solution Overview
Problem
The migration of vehicle application functions from dedicated ECUs to a central compute platform complicates fault identification, triaging, and recording, as the application functions and RIOs lack access to comprehensive fault data needed for effective fault classification.
Innovation Solution
A distributed diagnostics architecture featuring a central compute platform hosting application functions, remote input/output concentrator modules, and a vehicle diagnostics manager that aggregates and triages fault data from both strategic and physical monitors, enabling efficient detection and recording of faults across the vehicle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If application functions are moved from dedicated ECUs to a central compute platform, then the number of ECUs and wiring harness complexity is reduced, but fault identification and triaging capability deteriorates
Solution Approach 1:
The patent introduces a Vehicle Diagnostics Manager (VDM) as an intermediary component that collects fault data from both the central compute platform and RIOs, performs centralized fault triaging, and determines cause-consequence relationships. This mediator enables effective fault identification despite the functional partitioning that reduces wiring complexity.
2Adaptability or versatility
If application functions are separated from I/O drivers, then functional flexibility is improved, but access to comprehensive fault data is lost
Solution Approach 1:
The patent merges fault data collection and processing capabilities into a centralized VDM that aggregates data from both the central compute platform (hosting application functions) and RIOs (hosting I/O drivers). This combining ensures that functional flexibility is maintained while comprehensive fault data access is preserved through centralized aggregation.
3Loss of time
If fault triaging is performed locally at ECUs, then response time is reduced, but system complexity increases
Solution Approach 1:
The patent extracts the complex fault triaging logic from individual ECUs and relocates it to a centralized VDM. This extraction reduces ECU complexity while maintaining efficient fault response through centralized processing. The VDM performs rapid fault analysis by aggregating data from multiple sources simultaneously.
Data Source
AI summary
The present disclosure relates to a distributed diagnostics architecture for a vehicle. The diagnostics architecture comprises a plurality of application functions hosted on a central compute platform (CCP) of the vehicle, a plurality of remote input/output concentrator modules (RIOs) provided at different locations within the vehicle, and a vehicle diagnostics manager (VDM). The application functions are configured to control vehicle functions. The application functions are further configured to run diagnostic fault monitors pertaining to strategic or system-level faults for their associated vehicle functions, and to transmit strategic fault data related to their associated vehicle functions to the VDM. The RIO are connected to I/O devices of the vehicle. The RIOs are configured to run diagnostic fault monitors pertaining to physical or component-level faults for their associated I/O devices, and to transmit physical fault data related to their associated I/O devices to the VDM. The VDM is configured to aggregate the received strategic and physical fault data, and to maintain a central fault record of strategic and physical faults.