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Optical detection-based E type magnet sorting method

A technology of optical detection and magnetic materials, which is applied in sorting and other directions, can solve the problems of low detection efficiency and poor detection accuracy, and achieve the effects of strong real-time detection, high detection accuracy and high detection efficiency

Inactive Publication Date: 2011-06-22
HARBIN INST OF TECH
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Problems solved by technology

[0003] The present invention aims to solve the problems of low detection efficiency and poor detection accuracy of the existing E-type magnetic material detection method, thereby providing an E-type magnetic material sorting method based on optical detection

Method used

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  • Optical detection-based E type magnet sorting method
  • Optical detection-based E type magnet sorting method
  • Optical detection-based E type magnet sorting method

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specific Embodiment approach 1

[0038] Specific implementation mode 1. Combination figure 1Illustrate this specific embodiment, based on the E-type magnetic material sorting method of optical detection, it is realized by the following steps:

[0039] Step 1, make the optical axis of the camera perpendicular to the E-shaped surface of the E-shaped magnetic material to be tested, then use the camera to take pictures of the E-shaped surface of the E-shaped magnetic material to be tested, and obtain the E-shaped surface of the E-shaped magnetic material to be tested Image; the pixel of the image is 1280×1024;

[0040] Step 2, matching the image of the E-type material to be tested obtained in step 1 with the standard template image to obtain the measurement area of ​​the E-type material image to be tested;

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Abstract

The invention provides an optical detection-based E type magnet sorting method, and relates to an optical detection-based magnet sorting method. The problem that the existing E type magnet detection method is low in detection efficiency and bad in detection precision is solved. The method comprises the steps of: photographing an E type magnet to be detected to obtain an image of the E type magnet, extracting and fitting the magnet edge of the image, detecting the length of the magnet edge of the image to obtain the length information of the E type magnet to be detected, and sorting. In order to improve the detection precision, a step of denoising the image is added in the method and comprises the Hough conversion denoising and the least squares fitting denoising; and in order to improve the quality of a fitting straight, the method can be used for obtaining the edge of the E type magnet to be detected by a subpixel solving technology and the fitting straight. The method is suitable for sorting the E type magnet.

Description

technical field [0001] The invention relates to a magnetic material sorting method based on optical detection. Background technique [0002] E-type magnetic materials are widely used in transformers, which are composed of two E-type magnetic materials symmetrically combined into one piece. Therefore, the size of the two E-type magnetic materials must be the same, otherwise there will be magnetic flux leakage when combined. Phenomenon, which seriously affects the life of the transformer and causes a large loss of energy. Therefore, the size detection of E-type magnetic materials is an important part in the industrial production of E-type magnetic materials. At present, the size detection of E-type magnetic materials in industrial production is still in the state of sorting by production personnel with naked eyes. This detection method has low detection efficiency and poor accuracy. Contents of the invention [0003] The purpose of the present invention is to solve the pro...

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Application Information

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IPC IPC(8): B07C5/10
Inventor 高会军李志成宋春卫吴立刚
Owner HARBIN INST OF TECH
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