Single-Pair Ethernet Coupler for Fieldbus Cable Reuse

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Solution Overview

Problem

Existing industrial and building automation systems using twisted pair fieldbus cable systems face challenges in converting screw terminal connections to LC style connectors to facilitate the reuse of existing cables with single pair Ethernet-based equipment, which offers higher port densities and cost savings.

Innovation Solution

A migration coupler that connects existing fieldbus cables via screw terminals to a single pair Ethernet LC jack interface, allowing for the conversion of legacy fieldbus cables to single pair Ethernet networks while maintaining existing cable infrastructure.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If screw terminal connections are used for existing fieldbus cables, then cable compatibility is maintained, but port density and data transmission capability are limited

Engineering Contradiction:

Improvecable compatibilityVSAvoidport density

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent employs a migration coupler as an intermediary device that bridges the existing screw terminal connection system and the new single-pair Ethernet LC connector system. The coupler contains both screw terminals for connecting legacy fieldbus cables and an LC jack interface for single-pair Ethernet switches, enabling gradual system transition without requiring complete cable replacement while achieving high port density

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If screw terminal connections are used for existing fieldbus cables, then cable compatibility is maintained, but installation time and cost increase

Engineering Contradiction:

Improvecable compatibilityVSAvoidinstallation time

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The migration coupler is pre-configured with both screw terminal blocks and LC jack interfaces during manufacturing. This preliminary preparation allows installers to simply connect existing fieldbus cables to the screw terminals and patch cables to the LC interface without performing complex conversion work on-site, significantly reducing installation time while maintaining compatibility with legacy cables

Inventive Principle:

Principle #10Preliminary action

3Productivity

If LC style connectors with dedicated single pair cable are used, then high port density is achieved, but existing fieldbus cable infrastructure cannot be reused

Engineering Contradiction:

Improveport densityVSAvoidcable reuse capability

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The migration coupler serves multiple functions: it accepts both existing fieldbus cables with screw terminals and provides LC jack interfaces for single-pair Ethernet connections. This multi-functionality enables the system to maintain compatibility with legacy cable infrastructure while simultaneously supporting high-density single-pair Ethernet deployments, allowing existing cables to be reused throughout the building

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS11888255B2Single pair ethernet connector

Publication Date: 2024.01.30 PANDUIT CORP

AI summary

A communications connector has a main housing with a front opening and first, second, and third rear openings. The connector also has first, second, and third contacts, the first contact extends from the first rear opening of the main housing to the front opening of the main housing. The second contact extends from the second rear opening of the main housing to the front opening of the main housing. The third contact extends from the third rear opening of the main housing to a shield surrounding a front portion of the main housing.