Air condition compressor slip sheet counting method based on machine vision

The technology of an air-conditioning compressor and a counting method is applied in the field of counting in the production process of the air-conditioning compressor sliding vane, which can solve the problems of large workload and error-prone, and achieve the effect of accurate counting.

Active Publication Date: 2018-07-20
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0004] Aiming at many problems such as heavy workload and error-prone in the traditional manual counting method, the present invention proposes a machine vision-based air-conditioning compressor sliding vane counting method

Method used

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  • Air condition compressor slip sheet counting method based on machine vision
  • Air condition compressor slip sheet counting method based on machine vision
  • Air condition compressor slip sheet counting method based on machine vision

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Embodiment 1

[0023] Example 1: figure 1 It is the overall flow chart of the present invention. First, the image to be counted is collected, and the preprocessing of the image includes converting the color image into a grayscale image, and binarizing the grayscale image to calculate an adaptive threshold to obtain a binarized image. Gaussian blur the image and then perform binarization to remove the noise in the image, dilate to combine the separated slide images, and then corrode to get a white block with a slightly larger slide area, and find the contour function findContours provided by OpenCV To find the largest contour on the binary image, that is, the area where the slide is located, and this area is intercepted from the grayscale image, which is the area where the slide is located, such as image 3 As shown; divide the image horizontally into several pictures according to the preset number of slide lines, so that each picture has only one line of slides; count these pictures; add up ...

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Abstract

The invention provides an air condition compressor slip sheet counting method based on machine vision. The method includes collecting slip sheet end face images, performing image preprocessing, transversely averagely segmenting grayscale images, separately counting each row of images, and finally, accumulating the number of slip sheets of each row to be output. The image preprocessing includes image grayscale processing, smoothing, self-adaptive threshold binarization, morphological operation and search for maximum external contours of images, and an area where slip sheets are is obtained through the external contours in a grayscale map. The counting method is as follows: self-adaptive threshold binarization is performed on a picture, then a plurality of rows of pixels are randomly selected t be traversed, the number of slip sheets is obtained from variation information of pixel values of all the rows, and when results of all the rows are consistent, the number is considered as correct. The method provided by the invention is based on a machine vision technology, automatic counting of the slip sheets of the air condition compressor is realized, the problem that slip sheets have oilfouling and thus images are incomplete and counting errors occur is solved, and the method is fast in speed, small in error and easy to maintain, thereby greatly reducing labor cost of an enterprisein a production process.

Description

technical field [0001] The invention relates to the field of counting in the production process of air-conditioning compressor sliding vanes, in particular to a method for counting air-conditioning compressor sliding vanes based on machine vision. Background technique [0002] Air conditioners have become an indispensable electrical appliance in people's lives, and their demand and output are huge, and each compressor needs to be equipped with multiple slide vanes, so the output of slide vanes is even more astonishing. It is necessary to count the number of slides during the production process of slides and before off-line packaging, that is, to count the slides in the turnover box. On the one hand, it provides traceable data for the necessary production links to meet the needs of the production process, and on the other hand On the one hand, it provides an objective basis for the work quality evaluation indicators in the enterprise management system. [0003] At present, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06M11/00
CPCG06M11/00
Inventor 王宣王一赵英娜李铁帅
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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