Fusion Splicing Control for Timely Discharge Test Adjustment

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Solution Overview

Problem

Conventional fusion splicing devices struggle to perform discharge tests at appropriate timings, leading to inconsistent splicing quality due to varying fusion splicing conditions, which are influenced by factors like electrode wear, environmental changes, and user-determined test schedules.

Innovation Solution

A fusion splicing device equipped with a fusion splicing control unit that automatically triggers a discharge test when predetermined conditions are met, such as first use after shipment, electrode replacement, or environmental changes, using an imaging unit to assess splicing quality and adjust conditions accordingly.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If discharge tests are performed according to user-determined schedules, then operational flexibility is maintained, but splicing quality consistency deteriorates due to varying fusion splicing conditions

Engineering Contradiction:
Improvesplicing quality consistencyVSAvoidoperational flexibility
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system automatically triggers discharge tests based on real-time detection of electrode wear degree and environmental conditions. The control unit receives feedback from sensors monitoring electrode state and environmental parameters, then autonomously determines when discharge tests are necessary, eliminating the need for user judgment while maintaining consistent splicing quality.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The fusion splicing device performs self-diagnosis and self-adjustment by automatically initiating discharge tests when electrode wear or environmental changes are detected. The system serves itself by monitoring its own state and triggering appropriate maintenance operations without external intervention, ensuring optimal performance while reducing operational burden.

Inventive Principle:
Principle #25Self-service

2Reliability

If discharge tests are performed frequently to maintain splicing quality, then splicing quality consistency is improved, but productivity deteriorates due to unnecessary operations

Engineering Contradiction:
Improvesplicing quality consistencyVSAvoidsplicing efficiency
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The system performs preliminary detection of electrode wear degree and environmental conditions before splicing operations. By anticipating when discharge tests will be needed based on pre-monitored electrode state and environmental parameters, the system triggers tests only when necessary, avoiding both premature and delayed testing that would respectively reduce productivity or compromise quality.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The system dynamically adjusts the discharge test triggering threshold based on detected electrode wear degree and environmental conditions. As electrodes wear, the system adapts the criteria for triggering discharge tests, ensuring tests are performed at optimal intervals rather than fixed schedules, thereby maintaining quality while maximizing productivity.

Inventive Principle:
Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Ensures discharge tests are performed at optimal times, maintaining splicing quality by reducing splicing losses and inefficiencies associated with inappropriate testing or unnecessary operations.

Implementation Method 1

a fusion splicing unit (3) that fusion-splices optical fibers by discharge between a pair of electrode rods (3b)

Methodology Applied
Scientific EffectElectrical discharge: Electric Arc

Data Source

PatentEP4024102B1Fusion splicing device and method for operating fusion splicing device
Publication Date: 2026.04.15 SUMITOMO ELECTRIC OPTIFRONTIER CO LTD
  • EP4024102B1 patent drawingFigure 1
  • EP4024102B1 patent drawingFigure 2
  • EP4024102B1 patent drawingFigure 3

AI summary

A fusion splicing device includes a fusion splicing unit, a fusion splicing control unit, an imaging unit, and a notification unit. The fusion splicing unit fusion-splices optical fibers by discharge between a pair of electrode rods. The fusion splicing control unit controls an operation of the fusion splicing unit and has an operation mode for performing a discharge test. The imaging unit generates image data of a fusion spliced portion of the optical fibers. The notification unit notifies various kinds of information. The discharge test is to fusion-splice the optical fibers, to check a fusion-spliced state of the optical fibers on the basis of the image data, and to adjust a fusion splicing condition to be close to an optimum condition. When a predetermined start condition is satisfied, the fusion splicing control unit causes the notification unit to notify information for requesting execution of the discharge test.