In-Vehicle Switch Device Proxy Relay for Processing Unit Failure
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In-vehicle networks face instability in data transmission due to failures in switch devices that relay data between functional units, with existing redundancy techniques not adequately addressing this issue.
Innovation Solution
An in-vehicle communication system with first and second switch devices, where the switch unit transmits target data to the second switch device instead of the processing unit when an abnormality is detected, enabling the second switch device to perform a proxy relay process, thereby ensuring stable data transmission even in the event of processing unit failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a switch device uses a processing unit to perform relay process via a switch unit, then data transmission can be controlled and managed, but the system becomes vulnerable to failures in the processing unit that can stall data transmission
Solution Approach 1:
The patent introduces a second switch device as an intermediary to perform proxy relay process when the first switch device's processing unit fails. The second switch device acts as a mediator that takes over the relay function, preventing data from being stuck in the network. This resolves the contradiction by adding a backup mechanism that maintains reliability without fundamentally changing the primary switch device's structure.
Solution Approach 2:
The patent implements preliminary detection of processing unit abnormalities and pre-configures a proxy relay mechanism. When an abnormality is detected, the switch unit automatically transmits target data to the second switch device for proxy processing. This preliminary preparation ensures that data transmission continuity is maintained without requiring complex structural changes to the primary switch device.
2Reliability
If the switch unit continuously monitors for processing unit abnormalities, then system reliability improves, but the complexity of detecting and measuring system state increases
Solution Approach 1:
The processing unit performs self-diagnosis to detect its own abnormalities. The switch unit monitors the processing unit's operational state through built-in status indicators or heartbeat signals. This self-service approach improves reliability through continuous monitoring without requiring external complex detection systems, as the system monitors itself using existing components.
3Reliability
If the switch unit automatically transmits data to another switch device upon detecting processing unit failure, then data transmission stability is maintained, but the extent of automation increases system complexity
Solution Approach 1:
The system implements feedback through status monitoring between the switch unit and processing unit. When the switch unit detects that the processing unit cannot perform the relay process, it automatically transmits the target data to the second switch device. This feedback mechanism maintains data transmission continuity through automation without requiring complex decision-making systems, as the switching logic is based on clear operational states.
Data Source
AI summary
An in-vehicle communication system includes first and second switch devices that perform a relay process of relaying data in an in-vehicle network, the first switch device includes a switch unit and a processing unit that performs the relay process via the switch unit, the switch unit transmits target data to the second switch device instead of outputting the target data to the processing unit when an abnormality in the processing unit is detected, the target data being data which is received from a device other than the second switch device and is to undergo the relay process performed by the processing unit, and the second switch device performs a proxy process of relaying the target data received from the switch unit instead of the processing unit.