3D Cable Loop Characterization for Accurate Bend Measurement

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Solution Overview

Problem

Existing methods for assessing and documenting cable loop dimensions are inaccurate and time-consuming, particularly in three dimensions, leading to potential cable damage and performance degradation due to overbending.

Innovation Solution

A method using a 3D capturing device to create a 3D image of a cable loop, analyze center points along the axis, and generate a three-dimensional trace to accurately determine the cable's curvature, bending radius, and diameter variations, integrated with a computing device for precise characterization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If manual measurement tools and methods are used to assess cable loop dimensions, then the assessment process can be performed with simple equipment, but the measurement accuracy and reliability are insufficient and the process is time-consuming

Engineering Contradiction:

Improvecable loop dimension measurement accuracyVSAvoidtime for assessment and documentation

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent replaces manual mechanical measurement tools with a 3D scanning system that uses optical fields (laser or structured light) to capture cable loop dimensions. The scanning device automatically records spatial coordinates and calculates dimensions through software processing, eliminating manual measurement operations and significantly improving both accuracy and efficiency.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent creates a digital 3D copy of the cable loop by scanning its geometry and storing it as coordinate data in a database. This digital model serves as an accurate replica that can be measured and analyzed repeatedly without physical contact, enabling precise dimension assessment and permanent documentation.

Inventive Principle:

Principle #26Copying

2Extent of automation

If 3D scanning is used to capture cable loop dimensions, then measurement accuracy and automation are improved, but device complexity increases

Engineering Contradiction:

Improveautomation of cable loop assessmentVSAvoidcomplexity of scanning and processing system

Core Design Contradiction:

Extent of automationVSDevice complexity

Solution Approach 1:

The patent designs the scanning device to perform multiple functions: capturing 3D geometry, identifying cable centers, calculating dimensions, and storing data in a database. By integrating these functions into a single system, the patent reduces the need for multiple separate devices and manual operations, making the automation more efficient despite the increased complexity of individual components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent implements automated image processing algorithms that automatically identify cable centers, calculate dimensions, and generate reports without human intervention. The system processes the scanned data through predefined computational steps, enabling self-service operation that reduces the need for skilled operators and simplifies the user interface.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If manual interpretation of lidar images is used to assess loop dimensions, then device complexity can be reduced, but measurement accuracy and reliability deteriorate due to manual interpretation errors

Engineering Contradiction:

Improveloop dimension measurement accuracyVSAvoidcomplexity of image processing system

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent replaces manual visual interpretation of lidar images with automated computer-based image processing algorithms. These algorithms systematically analyze the 3D point cloud data to identify cable centers and calculate dimensions, eliminating human subjectivity and error while maintaining high measurement precision.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements a feedback mechanism where the processed measurement results are stored in a database and can be compared against previous measurements or design specifications. This feedback loop enables quality control and verification, ensuring measurement accuracy while documenting the assessment for future reference.

Inventive Principle:

Principle #23Feedback

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 rapid and accurate assessment of cable loop dimensions, identifying potential installation errors and ensuring optimal installation, thereby preventing cable damage and enhancing reliability.

Implementation Method 1

Lidar scanning has been used to map cable loops

Methodology Applied

Scientific EffectLIDAR: LIDAR

Data Source

PatentUS20250322538A1Method for characterizing a curved length of cable

Publication Date: 2025.10.16 NEXANS SA

AI summary

A method for characterizing a curved length of an installed cable, such as a cable loop or a section of a cable loop comprises includes providing a 3D image (402) of the curved length of the installed cable (26, 30, 31) by using a 3D capturing device (401); and analyzing the 3D image to identify multiple center points (35, 36) along the center axis of the curved length of the installed cable (26, 30, 31) and map the multiple center points (35, 36) in a three-dimensional coordinate system. A three-dimensional trace is created representing the center axis of the curved length of the installed cable (26, 30, 31) based on the identified multiple center points (35, 36).