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Board position detection method and device

A detection method and board card technology, which are applied in measurement devices, optical devices, image enhancement, etc., can solve the problems of high complexity and high cost of board position system, and achieve the effect of reducing cost and precise positioning.

Active Publication Date: 2019-05-07
GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide a board position detection method and device for the AOI system to detect the complexity and high cost of the board position system

Method used

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  • Board position detection method and device
  • Board position detection method and device
  • Board position detection method and device

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Experimental program
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Embodiment 1

[0075] Aiming at the technical problem of judging the position of the board by the AOI system, the present invention also provides a device for detecting the position of the board; Image 6 It is a structural schematic diagram of Embodiment 1 of the board position detection device of the present invention, as Image 6 Shown: The board position detection device includes:

[0076] The image acquisition module 610 is used to take an image of the position to be detected, and obtain a grayscale image of the image; in a specific embodiment, obtain the grayscale image of the image captured by the AOI system assembly line camera;

[0077]The image processing module 620 is used to perform edge detection processing on the grayscale image to obtain an edge image of the grayscale image; and obtain a morphological image of the edge image that includes several connected regions; and calculate the area of ​​each connected region in the morphological image ; In a specific embodiment, promptl...

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Abstract

The invention relates to a board card position detection method and device. Among them, the board position detection method includes the following steps: taking an image of the position to be detected and obtaining a grayscale image of the image; performing edge detection processing on the grayscale image to obtain an edge map of the grayscale image, and obtaining an edge map containing several connected The morphological image of the region, and calculate the area of ​​each connected region in the morphological image; obtain the maximum value in the area, and determine whether the maximum value is greater than or equal to the preset area threshold; if the judgment result is yes, obtain the maximum value corresponding to The center point coordinates of the connected area are used as the center point coordinates of the board. Through the board card position detection method and device of the present invention, the AOI system can determine the board card position through software methods, realize the entry detection of the board card on the assembly line, achieve accurate positioning of the board card, and reduce costs.

Description

technical field [0001] The invention relates to the field of automatic optical detection, in particular to a board position detection method and device. Background technique [0002] AOI (Automatic Optic Inspection) equipment is based on optical principles to detect common defects encountered in welding production. When automatic detection, the machine automatically scans the PCB (Printed circuit board, printed circuit board) through the camera, collects images, compares the tested solder joints with the qualified parameters in the database, and checks out the defects on the PCB after image processing. And the defects are displayed / marked through the display or automatic signs for repairing by maintenance personnel. [0003] Specifically, the AOI system moves the PCB board to the shooting range of the camera through the assembly line conveyor belt. The light from the light source shines on the PCB board and is reflected into the camera. The camera obtains an image reflectin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/00
CPCG01B11/00G06T7/13G06T7/136G06T2207/30141G06T7/73G06T2207/20164G06T7/155
Inventor 罗汉杰杨铭
Owner GUANGZHOU SHIYUAN ELECTRONICS CO LTD
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