Motor Vehicle Electronic Control Unit Safe Mode via Centralized Malfunction Detection
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Solution Overview
Problem
Existing methods for operating motor vehicles do not effectively proactively address malfunctions in electronic control units, leading to potential safety issues and inefficiencies, especially when erroneous information is shared among interconnected units.
Innovation Solution
A method involving a central point that determines systematic malfunctions and establishes a communication link to put affected electronic control units into a safe operating mode, disconnecting impaired units and preventing further errors through subnetwork operation or partial functionality limitation, thereby ensuring operational safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic control units are interconnected to provide improved functions, then functionality and cooperation between units is enhanced, but the risk of error propagation and systematic malfections increases
Solution Approach 1:
The communication network is segmented into subnetworks, allowing isolation of defective electronic control units from the rest of the system. This prevents error propagation while maintaining functionality of non-defective units, resolving the contradiction between interconnected operation and reliability.
2Reliability
If electronic control units operate in safe operating modes with limited functionality, then operational safety is improved, but the utility and performance of the system deteriorates
Solution Approach 1:
The system dynamically adjusts the operating mode of electronic control units based on their functional status. Non-defective units operate at full capability while defective units are isolated, allowing the system to maintain optimal performance where possible while ensuring safety, thus resolving the contradiction between safety and productivity.
3Reliability
If the communication network is subdivided into subnetworks to isolate defective units, then error propagation is prevented, but the complexity of network management increases
Solution Approach 1:
Electronic control units automatically determine their own functional status and initiate isolation procedures when defects are detected, without requiring complex central coordination. This self-service approach maintains reliability through automatic error isolation while minimizing the complexity of network management.
4Reliability
If systematic malfections are addressed proactively through central point determination, then operational safety is enhanced, but the need for continuous communication and monitoring increases system complexity
Solution Approach 1:
A central point acts as an intermediary to coordinate communication between electronic control units and the external service system. This intermediary manages the complexity of proactive malfunction detection and communication link establishment, enabling enhanced operational safety while containing system complexity through centralized coordination.
Data Source
AI summary
A method for operating a motor vehicle from a plurality of motor vehicles includes the steps of determining, by a central point, that a systematic malfunction is present in a plurality of motor vehicles; providing a communication link between the central point and the motor vehicle; and putting at least one electronic control unit of the motor vehicle into a safe operating mode to ensure the operational safety of the motor vehicle.