In-Vehicle Gateway Device Dynamic Bus Switching
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Solution Overview
Problem
Existing in-vehicle gateway devices require a redundant configuration to maintain communication in case of failures, making them expensive and less efficient.
Innovation Solution
A gateway device with multiple transceivers connected to various communication buses and switch elements that allow communication between buses with different priorities, enabling continued operation without a redundant system configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a redundant configuration is used to maintain communication during failures, then reliability is improved, but device cost and complexity increase
Solution Approach 1:
The gateway device dynamically switches between different communication buses based on their operational status. Instead of maintaining a static redundant configuration, the system adapts its communication path in real-time, allowing a single transceiver to serve multiple buses as needed. This dynamic adaptation provides reliability without requiring permanent redundant hardware.
Solution Approach 2:
Each transceiver is designed to be universal, capable of connecting to and communicating on multiple different communication buses (CAN, LIN, Ethernet, etc.). This multi-functionality allows a single transceiver to replace what would traditionally require multiple dedicated transceivers, eliminating the need for redundant configuration while maintaining communication capability across all buses.
2Reliability
If multiple transceivers are connected to multiple communication buses, then communication reliability is improved, but the device becomes more expensive
Solution Approach 1:
The patent employs universal transceivers that can interface with multiple types of communication buses (CAN, LIN, Ethernet, FlexRay, etc.). A single transceiver unit is designed to handle different bus protocols and physical layers, replacing the need for multiple dedicated transceivers. This multi-functionality reduces component count and device cost while maintaining the ability to communicate reliably across all bus types.
Solution Approach 2:
The transceiver's operational parameters (communication protocol, baud rate, physical interface) are dynamically changed based on which bus it is currently serving. Instead of requiring hardware-specific transceivers for each bus type, the system changes the transceiver's parameters to match the required bus specification, reducing component costs while maintaining compatibility with all bus types.
Data Source
AI summary
To provide a gateway device capable of continuing communication in the event of an abnormality without a redundant configuration as a system. A gateway device 100 includes a plurality of transceivers 110, 112, and 114 connected to a plurality of communication buses 1, 2, and 3 in a one-to-one manner, and a switch element 50 that connects the two communication buses 1 and 2 having different priorities among the plurality of communication buses.