In-Vehicle Ring Network Redundancy for Heterogeneous Link Recovery
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Solution Overview
Problem
Existing in-vehicle communication systems struggle to balance communication reliability and protocol compatibility in heterogeneous networks, leading to inefficiencies and delays in identifying and addressing link abnormalities.
Innovation Solution
A redundancy control method for in-vehicle ring networks that involves regular message exchange between adjacent units to determine link status, trigger a unified redundancy protocol, and adjust port blocking states to restore communication using a vehicle-wide communication topology rule, ensuring rapid response and compatibility across different protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant communication is implemented to ensure communication reliability, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent divides the vehicle communication network into multiple ring networks, with each ring network having independent redundancy control. This segmentation allows redundancy to be implemented locally within each ring rather than globally across the entire system, reducing overall system complexity while maintaining communication reliability.
Solution Approach 2:
The patent pre-establishes redundancy relationships between adjacent in-vehicle unit systems before faults occur. Detection messages are regularly exchanged between adjacent units to proactively identify link abnormalities, and redundancy control rules are pre-configured based on vehicle-wide communication topology, enabling rapid response without complex real-time decision-making.
2Reliability
If redundant communication is implemented to ensure communication reliability, then communication reliability is improved, but protocol compatibility becomes more difficult to maintain
Solution Approach 1:
The patent creates a unified redundancy control protocol that can be universally applied across different in-vehicle unit systems regardless of their specific communication protocols. The protocol is designed to work with multiple communication standards (CAN, LIN, Ethernet, FlexRay) by implementing a layering approach where redundancy control operates at a higher level independent of underlying protocol differences.
Solution Approach 2:
The patent introduces a redundancy control protocol as an intermediary layer between different communication protocols. This intermediary handles redundancy control functions uniformly while allowing various underlying protocols to operate independently, thus maintaining protocol compatibility while ensuring communication reliability through standardized redundancy mechanisms.
3Reliability
If traditional redundancy control methods are used, then communication reliability is improved, but response time to identify and address link abnormalities increases
Solution Approach 1:
The patent implements periodic exchange of detection messages between adjacent in-vehicle unit systems to regularly monitor communication link status. This periodic action enables timely detection of link abnormalities without requiring continuous monitoring, thus reducing response time while maintaining communication reliability.
Solution Approach 2:
The patent enables adjacent in-vehicle unit systems to autonomously detect link abnormalities through self-exchanged detection messages and automatically execute redundancy control rules without external intervention. This self-service mechanism reduces response time by eliminating manual or centralized control delays.
Data Source
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AI summary
This application relates to a redundancy control method and system for an in-vehicle ring network heterogeneous system, and a storage medium, and relates to the technical field of in-vehicle unit systems. The method includes in each ring network, any two adjacent in-vehicle unit systems regularly exchange detection messages , and determining a communication link status corresponding to the two in-vehicle unit systems based on a message exchange result; when the communication link status is abnormal, triggering a communication redundancy control protocol; in response to the communication redundancy control protocol, determining position information of the two in-vehicle unit systems with an abnormal communication link in a vehicle-wide communication topology, and generating, based on the position information, a redundancy control rule for restoring communication between the two current in-vehicle unit systems; executing the redundancy control rule to restore communication between the two current in-vehicle unit systems by adjusting communication port blocking states of relevant in-vehicle unit systems on the redundancy link of the two current in-vehicle unit systems; where the relevant in-vehicle unit systems are in or not in a same ring network. The solution of the present application achieves protocol compatibility while ensuring the reliability of the in-vehicle ring network heterogeneous system.