Cable Break Detection Using Floating Potential Monitoring

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Solution Overview

Problem

Existing anti-theft devices for electrical cables require the cables to be live and are limited to specific types, failing to detect breaks in non-operational cables effectively.

Innovation Solution

A device that detects cable breaks by monitoring for a change from a predetermined potential to a floating potential, using a processing unit with inputs for each cable, and includes a radio frequency signal emission and energy storage for self-sufficiency, allowing alerts to be sent via wireless networks.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional monitoring systems with multiple sensors and communication modules are deployed, then monitoring capability is improved, but device complexity and cost increase

Engineering Contradiction:

Improvecable integrity monitoring capabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent extracts the monitoring function from complex external systems and integrates it directly into the power supply unit. The processing unit within the power supply unit analyzes cable integrity by detecting electrical parameters, eliminating the need for separate sensor systems, communication modules, and external processing equipment.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The power supply unit is designed to perform multiple functions: it provides power to the cable through the injection unit and simultaneously monitors cable integrity through the processing unit. This multi-functionality consolidates what would traditionally require separate monitoring equipment into a single integrated device.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If traditional monitoring systems with multiple sensors and communication modules are deployed, then monitoring capability is improved, but implementation cost increases

Engineering Contradiction:

Improvecable integrity monitoring capabilityVSAvoidimplementation cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the power supply function and monitoring function into a single integrated unit. The processing unit, injection unit, and power supply unit work together as one system, eliminating the need for separate sensors, communication modules, and external processing equipment, thereby reducing overall implementation cost.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The power supply unit monitors its own operational status and cable integrity using its existing electrical connection. The processing unit analyzes electrical parameters from the cable during normal power delivery, allowing the system to self-diagnose cable breaks without requiring external monitoring equipment.

Inventive Principle:

Principle #25Self-service

3Measurement precision

If active monitoring signals are transmitted through the cable, then detection precision is improved, but energy consumption increases

Engineering Contradiction:

Improvebreak detection precisionVSAvoidenergy consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The system continuously monitors cable integrity during normal power delivery without requiring separate testing phases. The processing unit continuously analyzes electrical parameters (current, voltage, impedance) while the injection unit delivers power, enabling real-time detection of cable breaks without interrupting or adding to the normal energy flow.

Inventive Principle:

Principle #20Continuity of useful action

Solution Approach 2:

The cable itself serves as both the power transmission medium and the monitoring subject. The processing unit uses the electrical parameters inherent in normal power delivery to detect cable breaks, eliminating the need for separate active testing signals that would consume additional energy.

Inventive Principle:

Principle #25Self-service

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 early detection of cable breaks in non-operational cables, reducing repair delays and production stoppages, with low energy consumption and cost-effective operation.

Implementation Method 1

at least one power supply unit (18) including a means (20) for applying a predetermined potential to at least one electrical cable (12)

Methodology Applied

Scientific EffectElectrical potential: Electric Field

Implementation Method 2

adapted to detect, on at least one of the at least one input (16), either the predetermined potential, indicating the integrity of at least one electrical cable (12), or a floating potential, indicating a break in at least one electrical cable (12)

Methodology Applied

Scientific EffectElectrical conduction: Conduction (electrical)

Data Source

PatentEP4012676B1Anti-theft device for electric cable and associated operating method

Publication Date: 2026.05.06 NEXANS SA

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AI summary

This device (10) for detecting a break in at least one electrical cable (12) comprises at least one electrical cable (12), at least one processing unit (14) having at least one input (16) connected to at least one electrical cable (12), and at least one power supply unit (18) supplying power to at least one processing unit (14). The at least one power supply unit (18) includes a means (20) for applying a predetermined potential to at least one electrical cable (12) and is adapted to detect, on at least one of the at least one input (16), either the predetermined potential, indicating the integrity of at least one electrical cable (12), or a floating potential, indicating a break in at least one electrical cable (12).