In-Vehicle Ethernet Switch Timing for Stable Network Setting Changes

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Solution Overview

Problem

Existing vehicle-mounted network settings changes can disrupt communication, particularly due to environmental and operational factors like travel state and power supply conditions, making it challenging to maintain stable communication during dynamic network adjustments.

Innovation Solution

A vehicle-mounted control device and Ethernet switch that acquire and calculate optimal setting change timing based on factors such as system topology, service type, travel state, and power supply state, allowing for coordinated and non-disruptive network adjustments by determining when functions can be stopped or unaffected, and ensuring sufficient bandwidth.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If setting change is performed dynamically in vehicle-mounted network, then network adaptability and service update capability are improved, but communication stability and reliability deteriorate due to environmental factors and operational conditions

Engineering Contradiction:

Improvenetwork adaptabilityVSAvoidcommunication stability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary assessment of setting change timing by evaluating multiple conditions (travel state, power supply state, band state, function stoppability) before executing the setting change. This preliminary action ensures that changes are made only when conditions are favorable, thus maintaining communication stability while enabling network adaptability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system dynamically changes network parameters (setting timing, bandwidth allocation, power supply state) based on evaluated conditions. By adjusting these parameters according to the vehicle's operational state, the system achieves both network adaptability and communication stability.

Inventive Principle:

Principle #35Parameter changes

2Speed

If setting change is executed immediately without condition evaluation, then response speed and service update frequency are improved, but communication disruption and system reliability worsen

Engineering Contradiction:

Improvesetting change response speedVSAvoidcommunication reliability

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The system performs preliminary evaluation of multiple conditions (travel state, power supply state, band state) before executing setting changes. This preliminary assessment ensures that changes are made at appropriate times, balancing response speed with communication reliability.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system continuously monitors vehicle operational conditions (travel state, power supply state, band state) and uses this feedback to determine optimal setting change timing. This feedback mechanism ensures that setting changes are made at appropriate moments, maintaining both response speed and communication reliability.

Inventive Principle:

Principle #23Feedback

3Reliability

If setting change is delayed to ensure stability, then communication reliability is improved, but service update efficiency and network adaptability worsen

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidservice update efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The system dynamically adjusts setting change timing based on evaluated parameters (travel state, power supply state, band state). By changing these parameters adaptively, the system achieves both communication reliability and service update efficiency without unnecessary delays.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system dynamically determines setting change timing based on real-time vehicle conditions rather than using fixed delays. This dynamic approach allows setting changes to be executed promptly when conditions are favorable, maintaining both reliability and update efficiency.

Inventive Principle:

Principle #15Dynamics

4Measurement precision

If multiple condition factors are evaluated for setting change timing, then setting change precision and communication stability are improved, but calculation complexity and processing time worsen

Engineering Contradiction:

Improvesetting change timing precisionVSAvoidcalculation complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system segments the evaluation process into distinct condition checks (travel state, power supply state, band state, function stoppability). This segmentation allows each condition to be evaluated independently and systematically, improving timing precision while managing calculation complexity through structured processing.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20240250845A1Vehicle-mounted control device, ethernet switch and device setting method

Publication Date: 2024.07.25 AUTONETWORKS TECH LTD

AI summary

A vehicle-mounted control device to be mounted in a vehicle, includes: an acquisition unit configured to acquire calculation information to be used to calculate a setting change timing of a vehicle-mounted network from an electronic device in the vehicle-mounted network; a calculation unit configured to calculate the setting change timing based on the calculation information acquired by the acquisition unit; and a control unit configured to perform processing for executing a setting change of the vehicle-mounted network at the setting change timing calculated by the calculation unit, wherein the calculation information includes at least one of a topology of the vehicle-mounted network, a service of a system to which the electronic device belongs, a travel state of the vehicle, and a power supply state of the vehicle.