Wire Breakage Detection Using Dual-Coil Orientation
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Solution Overview
Problem
Existing methods for detecting wire breakage in civil and hydraulic engineering structures, such as prestressed concrete cylinder pipes, suffer from low accuracy, especially for large-area wire breakage and distinguishing between inner and outer layer breakages in multi-layered steel wire pipelines.
Innovation Solution
A wire breakage detection device comprising an excitation coil and a detection coil, with the excitation coil generating an alternating magnetic field and the detection coil receiving a signal to increase signal intensity, allowing for accurate identification of wire breakage status through comparison with a standard signal, and optionally including an electromagnetic signal generator and shield to enhance detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electromagnetic induction method is used to detect wire breakage, then detection can be performed, but detection accuracy is low for large-area wire breakage
Solution Approach 1:
The detection system divides the pipeline into multiple detection sections by moving the coil assembly axially. The excitation coil and detection coil are segmented into separate components that can be independently positioned and optimized, allowing systematic scanning of the entire pipeline to detect distributed wire breakages across different sections.
Solution Approach 2:
The patent transitions from a single-coil configuration to a dual-coil arrangement where the excitation coil axis is parallel to the pipeline axis and the detection coil axis is perpendicular to the pipeline axis. This dimensional change in coil orientation creates a three-dimensional electromagnetic field interaction that significantly improves detection sensitivity for large-area wire breakages.
2Loss of information
If conventional electromagnetic induction method is used, then wire breakage detection is possible, but inability to distinguish between inner and outer layer breakages in multi-layered pipelines
Solution Approach 1:
The patent applies different coil orientations and positions tailored to detect specific layer characteristics. The excitation coil generates alternating magnetic fields that penetrate different layers, while the perpendicular detection coil configuration optimizes signal reception from specific wire layers, enabling local quality differentiation between inner and outer layer breakages.
Solution Approach 2:
The system uses feedback from the detection coil signal to the processing unit, which analyzes signal characteristics to determine both the presence and location of wire breakages. The feedback mechanism allows the system to distinguish between inner and outer layer breakages by interpreting variations in the electromagnetic response signals from different layers.
3Measurement precision
If single coil configuration is used, then device simplicity is maintained, but signal intensity is insufficient for accurate detection
Solution Approach 1:
The patent merges the functions of excitation and detection into a unified dual-coil system. The excitation coil and detection coil work together in close proximity, with the excitation coil generating the alternating magnetic field and the detection coil simultaneously receiving the induced signals. This merging of functions creates a synergistic effect that significantly amplifies the detection signal while maintaining a relatively simple overall device structure.
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 device significantly improves the accuracy of wire breakage detection, enabling precise identification of multiple breakage regions and distinguishing between inner and outer layer breakages in multi-layered pipelines, thereby ensuring timely safety assessments and reinforcements.
Implementation Method 1
the excitation coil is configured to generate an alternating magnetic field according to an alternating electromagnetic signal, wherein an induced current and an electromagnetic field of the induced current are generated by the to-be-detected pipeline located in the alternating magnetic field
Implementation Method 2
the detection coil is configured to generate a detection signal according to the alternating magnetic field and the electromagnetic field
Data Source
AI summary
A device and method for detecting wire breakage are provided. The wire breakage detection device includes an excitation coil, a detection coil, and a processor. The detection signal input end of the processor is connected to the detection coil. The excitation coil and the detection coil are located on two sides of a longitudinal section of an inner wall of a to-be-detected pipeline respectively, wherein a conductive closed structure is formed continuously and annularly in the to-be-detected pipeline, the axis of the excitation coil is parallel to the axis of the to-be-detected pipeline, and the axis of the detection coil is perpendicular to the axis of the to-be-detected pipeline. The excitation coil is configured to generate an alternating magnetic field according to an alternating electromagnetic signal, wherein an induced current and an electromagnetic field of the induced current are generated by the to-be-detected pipeline located in the alternating magnetic field.