Aircraft Switch Local Observation Reduces Network Complexity

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Solution Overview

Problem

Aircraft communication networks have a complex architecture due to numerous connections to central computers, making them heavy and inefficient for data exchange and monitoring.

Innovation Solution

The implementation of local observation means within switches and associated processing members allows for local monitoring and control of logical channels, reducing the number of connections and computers required, enabling efficient data exchange and minimal disruption during operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a central computer is connected to various switches via dedicated ports to monitor data frames, then monitoring capability is improved, but device complexity increases due to heavy architecture with high number of connections

Engineering Contradiction:
Improvemonitoring capabilityVSAvoidarchitecture complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent divides the centralized monitoring function into distributed local observation units, each switch having its own local observation capability. This segmentation eliminates the need for a central computer connected to all switches, reducing architecture complexity while maintaining monitoring capability through distributed observation points

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent introduces configuration tables as intermediary structures that enable switches to autonomously monitor and distribute data frames based on pre-configured rules. These tables act as local mediators that eliminate the need for direct central computer connections to each switch, reducing the number of dedicated ports and connections required

Inventive Principle:
Principle #24Intermediary (Mediator)

2Device complexity

If local observation means are implemented in switches, then device complexity is reduced, but measurement precision may be affected

Engineering Contradiction:
Improvearchitecture complexityVSAvoidmonitoring accuracy
Core Design Contradiction:
Device complexityVSMeasurement precision

Solution Approach 1:

The patent enables switches to perform self-monitoring through local observation units that autonomously track data frames using configuration tables. Each switch independently monitors its own logical channels without external assistance, maintaining measurement precision while eliminating dependencies on central computer infrastructure

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements feedback mechanisms where local observation units continuously monitor data frame characteristics and provide information to processing members. This closed-loop feedback ensures monitoring accuracy is maintained through real-time local observation, compensating for the absence of centralized monitoring

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS11664885B2Communications network
Publication Date: 2023.05.30 SAFRAN ELECTRONICS & DEFENSE (FR)
  • US11664885B2 patent drawing
  • US11664885B2 patent drawing

AI summary

The invention relates to a communication network for an aircraft comprising at least one processing member and a first switch which is connected to the first processing member in order to provide data exchange within the first processing member and/or between the first processing member and at least one user terminal remote from the first processing member and connected to the first switch. According to the invention, the first switch comprises local means for observing logical communication channels of the first switch, and the first processing member includes means for controlling said observation means.