Leakage Current Metal Detection Circuit for Cable Integrity
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Solution Overview
Problem
Existing cable technologies struggle to detect internal damage, such as wire breakage, due to external protective insulation layers, leading to delayed repairs and potential electrical hazards.
Innovation Solution
A leakage current metal detection circuit device is introduced, featuring a metal detection wire and an additional signal wire connected to sensing ends S1 and S2. When the metal detection wire breaks, the connection between S1 and S2 is interrupted, allowing for timely detection of leakage current risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a protective insulation layer is added to cables, then the durability and safety of the cable are improved, but the ability to detect internal wire breakage is worsened
Solution Approach 1:
The patent embeds a metal detection wire and signal wire inside the cable structure, nested within the insulation layer. The detection wire is positioned inside the insulation layer alongside the signal wire, creating a nested configuration where the insulation layer remains intact for protection while the internal detection system monitors wire integrity. When the core wire breaks, the detection wire breaks simultaneously, interrupting the electrical connection between sensing ends S1 and S2, enabling detection despite the protective insulation layer.
2Duration of action of stationary object
If the cable structure is strengthened with braided wires, then the service life is extended, but the risk of undetected wire breakage persists
Solution Approach 1:
The patent implements preliminary action by installing the detection wire and signal wire system before the cable reaches the end of its service life. The detection system is pre-configured within the cable structure during manufacturing, allowing continuous monitoring of wire integrity throughout the cable's operational life. This enables early detection of wire breakage or insulation damage, prompting timely repairs before hazardous leakage currents can develop, thus maintaining reliability throughout the extended service life.
Data Source
AI summary
The present invention relates to a leakage current metal detection circuit device including a detection wire and a detection device. The detection wire has a metal detection wire, an additional signal wire, a metal outer layer, a protective insulation layer, and multiple core wires. The additional signal wire, the metal detection wire, and the core wires are all wrapped by the metal outer layer and further enveloped by the protective insulation layer.