Metal wire rope on-line monitoring method and device

Abstract

The invention provides a metal wire rope on-line monitoring method and device. The monitoring device comprises an in-situ monitoring terminal comprising a communication module, a monitoring signal generation module, an electromagnetic push-pull dipole type signal emission probe, a magnetosensitive signal reception probe, a received signal preprocessing module, a motion scanning module, a controller, a memory and a power supply, and a remote monitoring terminal comprising a communication module, a flaw analysis module, an imaging display module, a man-machine interaction module, a processor, a memory and a power supply. The method utilizes a magnetic signal as an information carrier, actively emits a wideband alternating magnetic field excitation signal, utilizes an array magnetosensitive element to acquire two dimensional and three dimensional induced magnetic fields and a spatial distribution case of a metal wire rope under magnetic field signal excitation, can reversely deduce the physical characteristic parameter spatial distribution case of the metal wire rope and realizes a nondestructive test and damage localization of the metal wire rope under the condition of non-contact. The method and device have the advantages of high precision, high reliability, networking and intelligentization.

Description

technical field [0001] The invention relates to the detection technology of metal wire ropes, in particular to an online monitoring method and device for metal wire ropes. Background technique [0002] Metal wire ropes are widely used in all aspects of national life. For example: steel wire ropes are the main components of the load and traction of various cranes, cableways, and elevators. Once broken, it will lead to catastrophic accidents for equipment and people; An important part, once broken, it will lead to power failure, fire and other safety accidents. Fatigue, rust, wear and even breakage will inevitably occur in the use of metal wire ropes. In order to prevent the gradual progress, many countries and regions have formulated relevant testing standards and mandatory testing of them. It is necessary to ensure its safe use and not Waste due to premature scrapping. At present, our country generally adopts the method of manual inspection and regular mandatory replacem...

AI Technical Summary

Problems solved by technology

Due to the limitation of the working environment of the wire rope, the imaging effect is generally not ideal, and it is suitable for the alarm of major damage, and the effect is not ideal for small damage such as tiny cracks and metal fatigue.

[0005] 2) X-ray detection adopts X-ray imaging, and then performs image processing on X-ray pictures to realize metal wire rope detection. It has the characteristics of high precision and can detect damage such as tiny cracks, but requires high cost and X-rays exist Radioactive, harmful to human body and environment, requires strict monitoring, not suitable for large-scale use

Magnetic flux leakage detection needs to be magnetized during detection, so the detection effect on ferromagnetic materials is better, it is not suitable for non-ferromagnetic materials such as copper, aluminum, gold, silver, stainless steel, and in the following situations: internal defects, small defects , coating, etc., the detection effect is not ideal

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