Vehicle Ethernet Diagnostics via SOME/IP Gateway and Switch
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Solution Overview
Problem
The increasing complexity of electronic control devices and multimedia systems in vehicles leads to a significant weight and manufacturing cost burden due to numerous cables and connectors, along with diagnostic challenges from changing diagnostic specifications for controllers and diagnostic devices.
Innovation Solution
A diagnostic system utilizing scalable service-oriented middleware on Ethernet/Internet Protocol (SOME/IP) service discovery (SD) and Internet Group Management Protocol (IGMP) for easier diagnosis between client and server, including an Ethernet controller, diagnostic device, and switch to manage communication paths and diagnose failures within the vehicle's network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electronic control devices and multimedia devices are diversified to enhance vehicle functionality, then user convenience and vehicle capabilities are improved, but the number of cables and connectors increases significantly, leading to increased weight, manufacturing cost, and reduced reliability
Solution Approach 1:
The patent implements a universal Ethernet-based communication network that replaces multiple dedicated communication lines with a single standardized protocol. The Ethernet controller and switch enable diverse electronic control devices and multimedia devices to communicate through a common infrastructure, eliminating the need for separate cables and connectors for each device type.
Solution Approach 2:
The patent substitutes physical mechanical connections (cables and connectors) with wireless or integrated electronic communication pathways. By using Ethernet communication protocols and standardized interfaces, the system reduces reliance on extensive physical wiring harnesses, thereby reducing weight and connector complexity.
2Reliability
If traditional diagnostic methods are used with diversified electronic control devices, then device-specific diagnosis is possible, but diagnostic specifications must be changed frequently and multiple diagnostic devices are required, increasing complexity and cost
Solution Approach 1:
The patent employs a universal diagnostic device that can diagnose multiple types of electronic control devices through a standardized Ethernet interface. The diagnostic device communicates with various controllers (audio, video, navigation, air-conditioning, seat heating) using a common protocol, eliminating the need for multiple specialized diagnostic tools.
Solution Approach 2:
The Ethernet switch acts as an intermediary that facilitates communication between the single diagnostic device and multiple electronic control devices. It manages data packets and routing, enabling one diagnostic device to access and diagnose various controllers without requiring direct specialized connections to each device.
3Adaptability or versatility
If extensive cables and connectors are used to interconnect separation devices, then device connectivity is achieved, but overall vehicle weight and manufacturing cost increase significantly
Solution Approach 1:
The patent implements a universal Ethernet communication backbone that allows multiple devices to share common communication pathways. Instead of dedicated cables for each device pair, a single Ethernet network infrastructure supports all device connections, significantly reducing the total amount of cabling required in the vehicle.
4Ease of operation
If more electronic control devices are added to provide additional functions, then user convenience is improved, but the number of cables and connectors increases, leading to reduced reliability and increased quality issues
Solution Approach 1:
The patent creates a reliable universal communication platform using Ethernet protocols that can handle diverse device types. The standardized interface and protocol reduce connection points (connectors), thereby reducing potential failure points and improving overall system reliability while supporting expanded functionality.
Data Source
AI summary
A vehicle is provided that includes Ethernet controllers that operate first electronic devices and perform communication using scalable service-oriented middleware on Ethernet/internet protocol (SOME/IP). An Ethernet switch generates a communication path between the Ethernet controllers and executes communication between the Ethernet controllers based on the generated path. A plurality of CAN controllers operate second electronic devices and perform CAN communication. A gateway then executes the CAN communication with the CAN controllers, executes communication with the Ethernet switch, and transmits CAN diagnostic information of the CAN controller to the Ethernet switch.