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A method for patching UHV transformer cores based on visual inspection

A technology for transformer core and visual inspection, applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve the problems of workers' personal safety hazards, unsatisfactory sticking effect, time-consuming and labor-consuming, etc. requirements, reduce calibration and calculation time, and enhance the effect of accuracy

Inactive Publication Date: 2018-10-16
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, domestic talc sheets are almost always pasted manually, which is time-consuming and labor-intensive, and the paste effect cannot meet the requirements. The thin and sharp silicon steel sheets also pose a potential safety hazard to workers.

Method used

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  • A method for patching UHV transformer cores based on visual inspection
  • A method for patching UHV transformer cores based on visual inspection
  • A method for patching UHV transformer cores based on visual inspection

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Embodiment 1

[0044] In this embodiment, the UHV transformer core patching device based on visual detection (referred to as the device, see figure 1 ), the experimental silicon steel sheet layout such as Figure 4 , the angle between the hypotenuse and the horizontal is 45°.

[0045] The first step is to calibrate the industrial camera, that is, to determine the pixel coordinates of the center position where the talc sheet is pasted in the field of view of the industrial camera. Before the patch starts, adjust the vacuum absorber 4 to a suitable sticking position, that is, the position to be patched, and manually stick a piece of talc in advance. When the main pulley mechanism 7 and the auxiliary pulley mechanism 3 are not moving, the camera collects a limited number of 8 frames of images in time series, and the image coordinates of the center of the steatite slice in each frame of the image plane are (303,300), (302,300), (303,300) , (303,300), (303,300), (303,300), (303,300), (303,300)....

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Abstract

The invention discloses an extra-high voltage transformer core sheet pasting method based on visual inspection. The method comprises the specific steps that (1) a camera of an industrial camera is used for obtaining silicon steel sheet surface area images; (2) an image processor in the industrial camera is used for processing the obtained silicon steel sheet images so as to determine the silicon steel sheet edge and corner point positions; (3) the industrial camera sends the edge and corner point positions to a control system, and the control system determines the pasting point positions of each talcum sheet according to the pasting sequence and space requirements of different talcum sheets and the information of the silicon steel sheet edge and corner point positions; at the same time, the control system controls a sheet pasting device to perform sheet pasting operation according to the set pasting sequence of the talcum sheets. According to the method, the three-dimensional silicon steel sheet surface feature information is obtained by single frame images, so that the relative deviation value of the sheet pasting device in a two-dimensional plane can be calculated, and further accurate positioning of the target pasting points in the three-dimensional space can be realized.

Description

technical field [0001] The invention relates to the visual detection of silicon steel sheets of ultra-high voltage transformers and the automatic sticking of talc sheets according to requirements, in particular to a method for pasting iron cores of ultra-high voltage transformers based on visual detection. Background technique [0002] The electric power industry is an important basic industry related to the overall situation of the national economy and the basic guarantee for thousands of households to live and work in peace and contentment. The development of the electric power industry is closely related to the overall development of the national economy. Since UHV power transmission has the characteristics of ultra-long distance, ultra-large capacity, and low loss, the construction of UHV power grids can promote the construction of large-scale coal power, large-scale hydropower, large-scale nuclear power, and large-scale renewable energy, which can promote the intensive d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02
CPCH01F41/0233
Inventor 陈海永任亚非李泽楠
Owner HEBEI UNIV OF TECH
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