Steel wire rope surface damage detection method based on image matching

Abstract

The invention provides a steel wire rope surface damage detection method based on image matching and belongs to the field of image processing and nondestructive inspection. A mode that a camera is fixed is adopted and the movement of a steel wire rope in the process of operation is used, so that the real-time detection of the whole section of the steel wire rope is achieved. In consideration of application fields with different terminal properties, an image of the steel wire rope can be obtained through two modes which are video shooting and picture taking and a work mode matched with terminal capacity is flexibly selected. In the mode of video shooting, only video key frames are extracted for matching, work load is greatly reduced under the premise that steel wire rope damaged portion shots are extracted, the key frame extracting mode of an unfixed number is used, the number of the key frames is flexibly adjusted according to different shot contents, and therefore the expense of a system is further reduced. Image matching based on features is used for steel wire rope surface damage detection, a damage degree is reflected by a matching degree and the judgment of the damage degree is simple and accurate.

Description

Technical field [0001] The invention relates to a wire rope damage detection method, in particular to a wire rope surface damage detection method based on image matching. Background technique [0002] With the progress of modern industrialization, steel wire ropes are widely used in major industries of the national economy such as mining, transportation, and construction. Due to the harsh application environment of steel wire ropes, wire breakage, corrosion, and even breakage are likely to occur during use, which directly affects personal safety and production efficiency. Therefore, the fault detection method of the wire rope is particularly important. [0003] Traditional steel wire rope damage detection includes two categories: manual visual inspection and non-destructive testing equipment. Manual visual inspection refers to the provision of specialized staff to observe whether the wire rope is damaged regularly with the naked eye. This method is simple and easy to implement, ...

AI Technical Summary

Problems solved by technology

However, the disadvantage of this method is that the detection time is long, the labor intensity is high, the detection personnel are prone to fatigue, and the efficiency is low; the second is that it relies heavily on the professional quality and work attitude of the staff, and the subjectivity leads to a high missed detection

However, this method has complex equipment and high cost. The shaking, irregular torsion and stretching degree of the steel wire rope during detection, the depth, width and shape of the damage, environmental temperature changes and external electromagnetic interference will cause greater interference to the detection signal.

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