Enameled wire pinhole defect detection method

Abstract

The invention relates to an enameled wire pinhole defect detection method. The method comprises the following steps: acquiring a detection data set with a preset detection length, wherein the detection data set comprises detection current data groups of N unit detection lengths, n is a positive integer, and the detection current data set comprises M detection current values; carrying out pinhole identification on each detection current value of the N unit detection lengths, and obtaining existence conditions of the K pinhole size types in the N unit detection lengths, wherein the existence condition comprises a pinhole count value; and according to the existence condition, determining a pinhole frequency count value P corresponding to the K pinhole size types in the preset detection length, wherein the pinhole frequency count value is the number of unit detection lengths with the current pinhole size type in the preset detection length. According to the scheme provided by the invention, the information dimension in the detection of the pinhole defect of the enameled wire can be increased, so that the accuracy and reliability of the detection of the pinhole defect of the enameled wire are improved.

Description

technical field [0001] The present application relates to the technical field of enameled wire production, in particular to a detection method for pinhole defects in enameled wires. Background technique [0002] Enameled wire is the wire used in the motor winding. When the enameled wire is wound on the frame of the motor stator, multiple enameled wires will contact each other. In order to achieve mutual insulation between multiple enameled wires, it is necessary to wrap a layer of insulating varnish on the outside of the copper wire. [0003] However, when the enameled wire coating equipment is coated with insulating varnish, it is difficult to ensure that the surface of the insulating varnish is smooth and flat. The formation of pinholes on the surface of a paint. Since these defects on the surface of the enameled wire will affect the insulation performance or electrical performance of the enameled wire, it is necessary to detect the defects on the surface of the enameled ...

AI Technical Summary

Problems solved by technology

[0007] Although the above scheme distinguishes and counts different defect sizes, and sets different judgment thresholds for enameled wire defect detection according to different defect sizes, it only incorporates the information of one dimension of defect quantity into the detection basis for defect detection The data dimension of judgment is small, and the ability to improve the accuracy and reliability of enameled wire defect detection is limited

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