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Method and apparatus for eddy-based electronically-controlled scanning and monitoring

A monitoring device and eddy current detection technology, which is applied in measurement devices, material analysis by electromagnetic means, instruments, etc., can solve the problems of high difficulty and high cost of automatic detection technology, low detection efficiency, manual detection, etc., and achieve device detection efficiency and The effect of high detection accuracy, lower detection cost, and elimination of detection blind spots

Active Publication Date: 2013-06-12
EDDYSUN (XIAMEN) ELECTRONICS CO LTD
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  • Claims
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Problems solved by technology

At present, non-destructive testing methods such as magnetic particle and penetration are mostly used. Most of these testing methods require manual testing, the testing efficiency is low, and they cause environmental pollution. Although ultrasonic testing can realize automatic testing, it is limited by the coupling problem of ultrasonic probes. Difficulty and high cost

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  • Method and apparatus for eddy-based electronically-controlled scanning and monitoring
  • Method and apparatus for eddy-based electronically-controlled scanning and monitoring
  • Method and apparatus for eddy-based electronically-controlled scanning and monitoring

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Embodiment Construction

[0029] figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Image 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 In the shown embodiment, an eddy current electronically controlled scanning and monitoring device for rails in use includes a plurality of probe support inclined blocks 1, a plurality of single-coil eddy current detection probes 2, an array electronic switching on switch 3, a programmable logic The controller 4, the eddy current detector 5, the standard test piece 6, and the signal cable 7 are characterized in that: the end faces 11 of the plurality of probe support slant blocks 1 are arranged in a line and fixed closely; the plurality of single-coil eddy current detection probes 2 is fixed on the inclined plane 10 of a plurality of probe supporting inclined blocks 1 arranged in a line, and there are overlapping parts between the plurality of single-coil eddy current detection probes 2, that is, the edge part of one single-coil eddy current detecti...

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Abstract

The invention discloses a method and apparatus for eddy-based electronically-controlled scanning and monitoring. The apparatus comprises a plurality of probe support slant blocks, a plurality of single coil eddy detection probes, an array electronic switching conduction switch, a programmable logic controller, an eddy detection instrument, a standard detection piece, and a signal cable. On the basis of an electromagnet nondestructive detection principle, the plurality of single coil eddy detection probes are arranged in a line in a pushed domino arrangement mode and are fixed on a detection surface of a detected steel rail. Because of the utilization of an array electronic switching conduction switch technology, only the single-channel eddy detection instrument is needed to receive an eddy signal without the need of an expensive array eddy detection instrument, thereby substantially reducing the detection cost. Meanwhile, eddy detection coils employ a circular-bead square winding mode and the detection covering surfaces of the multiple eddy detection coils are intersected and superposed with each other, thereby eliminating the detection blind area. Therefore, the provided apparatus is suitable for in-use real-time monitoring work of steel rails like a railway rail and a sliding rail of a port crane and the like in the industries of railway, port, bridge, and building and the like.

Description

Technical field [0001] The invention relates to a non-destructive testing method and device, in particular to a method and device for eddy current electronically controlled scanning and monitoring of rails in use. Background technique [0002] Steel rail is the infrastructure of rail transit, and its pressure-bearing parts are prone to fatigue cracks during use. Regular non-destructive testing should be carried out to detect fatigue cracks in time to avoid major safety accidents that cause rail fracture due to crack expansion. Taking the detection of railway turnout rails as an example, the characteristics of turnout rails are that the cross-section width gradually narrows, and the pressure is uneven. The narrower the cross-section width, the greater the pressure. If it is not discovered in time, when the cross-section cracks further expand upwards and exceed the tread surface, a major safety accident such as rail fracture and train derailment will occur. At present, non-de...

Claims

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Application Information

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IPC IPC(8): G01N27/90G01N27/904G01N27/9093
Inventor 林俊明
Owner EDDYSUN (XIAMEN) ELECTRONICS CO LTD
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