Mining steel wire rope online detection device and method based on giant magnetoresistance sensor array

Abstract

The invention discloses a mining steel wire rope online detection device and a mining steel wire rope online detection method based on a giant magnetoresistance sensor array. The device comprises a probe, a signal conditioning module, a data acquisition card, a computer and a positioning module. The method comprises the following steps: magnetizing the steel wire rope by using an excitation device in the probe, and detecting a leakage magnetic field generated by damage by using a giant magnetoresistance sensor in the probe; processing an output signal of the probe by using the signal conditioning module, and inputting the processed output signal into the computer together with a signal of the positioning module through the data acquisition card; displaying the probe signal in real time on the computer, and comparing the probe signal with a preset threshold value to determine whether damage exists on the steel wire rope to be detected; if the probe signal is higher than the preset threshold value, indicating that damage exists on the steel wire rope to be detected, further determining the type and size of the damage, and determining a damage position according to the signal of the positioning module. The detection device and the detection method have the outstanding characteristics that by adopting the probe consisting of the giant magnetoresistance sensor array, the sensitivity of the detection device can be increased remarkably. The device and the method have good application prospects in damage detection of the mining steel wire rope.

Description

technical field [0001] The invention relates to an online detection device and method for a mine steel wire rope based on a giant magnetoresistance sensor array, belonging to the field of mining machinery equipment. Background technique [0002] As a key component of the system, steel wire rope is widely used in mining machinery and equipment. It has the advantages of good bending performance, high strength, good elasticity, strong impact resistance, light weight, and stable operation. However, as the service time of the wire rope increases, various damages such as fatigue, corrosion, and broken wires will occur. There are various forms of damage to the wire rope, and the occurrence and development of the damage are interrelated and affected. For example, the corrosion of the wire rope will aggravate the wear and damage, and the wear will lead to broken wires, and sometimes rust can also directly lead to broken wires. If the damage degree of the steel wire rope cannot be ob...

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Problems solved by technology

[0006] The purpose of the present invention is to provide an online detection device and method for mine steel wire ropes based on giant magnetoresistance sensor arrays, so as to solve the problems of low sensitivity of the detection device and difficulty in realizing online damage detection.

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