Metallic Conduit Wireless Detection for Ground Discontinuities

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Solution Overview

Problem

Existing conduit systems face challenges in detecting electrical discontinuities caused by corrosion, rust, or other environmental factors, which can lead to ground connection failures and safety hazards.

Innovation Solution

A wireless electrical discontinuity detection system that uses a DC pulse circuit to generate electrical signals, which are transmitted through the conduit's conductive outer layer and detected by a wireless device. This system identifies electrical connections and ground discontinuities by analyzing the detected signals and communicates the results wirelessly to a control station.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual inspection methods are used to detect electrical discontinuities, then detection capability is provided, but labor intensity is high and detection efficiency is low

Engineering Contradiction:

Improvedetection efficiencyVSAvoidlabor intensity

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The system enables automatic detection of electrical discontinuities through the conduit system itself. The conduit acts as both the protective enclosure and the detection medium, eliminating the need for separate inspection equipment or manual testing procedures. The embedded sensor continuously monitors electrical continuity, allowing the system to self-diagnose grounding issues without human intervention.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent replaces manual mechanical inspection methods with an electrical field-based detection system. Instead of physically testing continuity with multimeters or visual inspections, the system uses electrical signals transmitted through the conduit to automatically detect discontinuities, substituting mechanical human labor with automated electrical measurement.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If continuous monitoring of conduit grounding integrity is implemented, then safety is improved, but system complexity increases

Engineering Contradiction:

Improvegrounding integrityVSAvoidmonitoring system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The conduit system serves multiple functions simultaneously: it provides mechanical protection for electrical conductors, establishes electrical grounding, and acts as the detection medium for monitoring grounding integrity. This multi-functionality eliminates the need for separate monitoring hardware, reducing overall system complexity while maintaining continuous safety monitoring.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent merges the grounding function and the monitoring function into a single integrated system. The same electrical path used for grounding is also used for detection, combining what would traditionally be separate systems into one unified approach that reduces complexity while improving reliability.

Inventive Principle:

Principle #5Merging (Combining)

3Adaptability or versatility

If corrosion and rust are allowed to affect the conduit, then environmental adaptability is maintained, but electrical conductivity deteriorates

Engineering Contradiction:

Improveenvironmental resistanceVSAvoidelectrical conductivity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The system performs preliminary detection of conductivity changes before they result in complete grounding failure. By continuously monitoring electrical continuity and detecting early signs of corrosion-induced resistance changes, the system can alert operators to potential issues before they compromise safety, allowing preventive maintenance action.

Inventive Principle:

Principle #10Preliminary action

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

The system provides an automatic, wireless method for detecting ground discontinuities, reducing the need for manual inspections and minimizing downtime in complex electrical networks. It allows for prompt identification of faults, enhancing safety and reducing maintenance costs.

Implementation Method 1

an electrical signal generator electrically coupled to the at least one conduit, the electrical signal generator being configured to deliver electrical signals to the outer layer of the at least one conduit

Methodology Applied

Scientific EffectElectrical Conduction: Conduction (electrical)

Data Source

PatentUS12345777B2Metallic conduit electrical discontinuity wireless detection system and method

Publication Date: 2025.07.01 EATON INTELLIGENT POWER LTD

AI summary

The present disclosure relates to wireless electrical discontinuity detection methods and systems, the systems including at least one conduit having an outer layer including an electrically conductive material, an electrical signal generator electrically coupled to the at least one conduit, the electrical signal generator being configured to deliver electrical signals to the outer layer of the at least one conduit, and a detector device in electrical communication with the electrical signal generator and configured to detect an electrical signal from the electrically conductive outer layer, the detector device being configured to identify at least one of electrical connection and ground discontinuity in the at least one conduit based on the detected electrical signal, wherein the detector device is in wireless communication with a control station.