High-inductive-reactance flexible magnetic paste type eddy current array sensor device and monitoring method thereof
An array sensor and sensor device technology, applied in the direction of material magnetic variables, etc., can solve problems such as being unsuitable for long-term online monitoring applications
Active Publication Date: 2021-05-25
EDDYSUN (XIAMEN) ELECTRONICS CO LTD
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Problems solved by technology
[0002] As an important tool of modern traffic and transportation, railway rail transit is very important for safety monitoring. However, at present, methods such as ultrasonic guided wave and acoustic emission detection and monitoring widely used in the railway industry are not suitable for long-term online monitoring because of their fundamentals. For monitoring applications, there is an urgent need for long-term monitoring sensor devices that are suitable for in-service railway tracks, such as eddy current electromagnetic detection
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[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0034] like Figure 1 to Figure 9 As shown, a high-inductance flexible magnet-attached eddy current array sensor device is used for long-term non-destructive monitoring and detection of in-service rails, especially switch 1. The permanent magnet is magnetically pasted on the surface of the detection object, and the wireless signal The remote transmission is connected to the center of the detection instrument 2. It is characterized in that the eddy current sensor device 3 includes a liner 31, an eddy current detection coil 32, and a permanent magnet 33. It is characterized in that the lower surface of the liner 31 is provided with an eddy current detection coil. Several coil grooves 311 of 32, and several grooves 312 for installing permanent magnets 33 are also provided on the upper surface of back 313 of liner 31;
[0035] Wherein, the lining ...
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The invention relates to a high-inductive-reactance flexible magnetic paste type eddy current array sensor device and a monitoring method thereof which are used for in-service long-term nondestructive monitoring and detection of in-service steel rails, especially turnout junctions (1). The sensor device is adhered to the surface of a detected object in a magnetic attraction manner by permanent magnets and connected to the center of a detection instrument (2) through wireless signal remote transmission. The eddy current sensor device is characterized in that the eddy current sensor device (3) comprises a lining body (31), eddy current detection coils (32) and permanent magnets (33); the lower surface of the lining body (31) is provided with a plurality of coil grooves (311) used for placing the eddy current detection coils (32); the upper surface of the back part (313) of the lining body (31) is also provided with a plurality of grooves (312) used for installing the permanent magnets (33); wherein the lining body (31) is of a strip-shaped structure made of a soft magnet material with flexibility and elasticity. The array type eddy current detection sensor device can be attached to detection objects with different curved surfaces.
Description
technical field [0001] The invention relates to the technical field of non-destructive testing, in particular to an eddy current detection sensor technology for on-line monitoring of discontinuity of railway turnouts, and in particular to a high-inductance flexible magnetic paste type eddy current array sensor device and a monitoring method thereof. Background technique [0002] As an important tool of modern traffic and transportation, railway rail transit is very important for safety monitoring. However, at present, methods such as ultrasonic guided wave and acoustic emission detection and monitoring widely used in the railway industry are not suitable for long-term online monitoring because of their fundamentals. For monitoring applications, there is an urgent need for long-term monitoring sensor devices that are suitable for in-service railway tracks, such as eddy current electromagnetic detection. [0003] With the rapid development of modern wireless network technology...
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IPC IPC(8): G01N27/90
CPCG01N27/90Y02E30/30
Inventor 林俊明卢聪赟穆根生
Owner EDDYSUN (XIAMEN) ELECTRONICS CO LTD