Traceable Fiber Optic Jumper Using Electromagnetic Tone Detection

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Solution Overview

Problem

Current methods for tracing fiber optic jumpers in central offices are inefficient, as they require visual or physical tracing, which can disrupt other jumpers and are difficult in large facilities, failing to accurately follow the path of the jumper through crowded areas.

Innovation Solution

A system that impresses a locating tone on an electrical conductor along the fiber optic jumper, creating an electromagnetic field, allowing a handheld detector to trace the jumper without physical contact by detecting the field and emitting a presence-indicating signal.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If visual or physical tracing methods are used to locate fiber optic jumpers, then the technician can identify the jumper path, but the process disrupts other jumpers and is difficult in crowded facilities

Engineering Contradiction:
Improvejumper tracing processVSAvoiddisruption to other jumpers
Core Design Contradiction:
Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical/physical tracing method with an electromagnetic field-based detection system. A tone generator attached to the jumper creates an electromagnetic field that can be detected by a handheld detector, eliminating the need for physical contact or visual tracking through crowded areas, thus avoiding disruption to other jumpers while enabling easy identification of the jumper path

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces an electromagnetic field as an intermediary between the jumper and the detector. The tone generator creates this field around the jumper, and the handheld detector senses it, allowing indirect detection of the jumper's location without physical contact, thereby solving both the ease of operation and harm prevention requirements

Inventive Principle:
Principle #24Intermediary (Mediator)

2Measurement precision

If technicians physically trace jumpers through crowded fiber management areas, then they can follow the jumper path, but it becomes difficult to locate particular jumpers among thousands

Engineering Contradiction:
Improvejumper location accuracyVSAvoidtime to locate jumper
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent employs feedback through the handheld detector that provides real-time signals to the technician. When the detector is near the target jumper, it emits audible or visual feedback indicating proximity, allowing the technician to quickly and accurately locate the jumper without searching through crowded areas, thus improving both precision and reducing time loss

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

The patent replaces manual visual searching and physical tracing with electromagnetic field detection. The system uses a tone generator to create an electromagnetic signature around the jumper and a handheld detector to sense it, enabling rapid and precise location of jumpers even among thousands, significantly reducing search time while maintaining high accuracy

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

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

Enables accurate tracing of fiber optic jumpers without physically touching or moving them, reducing the risk of disrupting other fibers and improving location efficiency in crowded facilities.

Implementation Method 1

impressing a jumper-locating tone on an electrical conductor extending along the jumper so that the jumper radiates an electromagnetic field surrounding the jumper along its length

Methodology Applied
Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS7948226B2Traceable fiber optic jumpers
Publication Date: 2011.05.24 AT&T INTELLECTUAL PROPERTY I L P
  • US7948226B2 patent drawing
  • US7948226B2 patent drawing
  • US7948226B2 patent drawing

AI summary

An optical fiber jumper cable includes a single tracing conductor for tracing the jumper cable through a fiber cross-connect facility such as a central office. An electrical locating tone is impressed on the conductor so that the conductor radiates an electromagnetic field along the length of the fiber jumper cable. A locating tone detector is used to trace the fiber jumper cable along its length by monitoring a presence-indicating signal emitted by the locating tone detector.