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Positioning system and method for electronic component processing
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A technology of electronic components and positioning systems, applied in image data processing, instruments, calculations, etc., can solve the problems of drilling positioning deviation, small drilling aperture, error, etc., and achieve the effect of realizing accurate positioning and reducing deviation
Inactive Publication Date: 2020-11-13
道真自治县金泰电器元件有限公司
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Problems solved by technology
[0005] The present invention provides a positioning system and method for processing electronic components, which solves the problem that due to the relatively small size of the PCB, the hole diameter to be punched is also very small, and even a small error will cause the positioning of the punched holes to deviate. As a result, the calculation of the actual hole position coordinates through the image coordinates will cause errors in the technical problem
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Embodiment 1
[0058] The embodiment of the positioning system for processing electronic components of the present invention is basically as attached figure 1 shown, including:
[0059] The acquisition module is used to acquire the image of the PCB board, and the four corners of the PCB board are preset with marking holes;
[0060] The contour module is used to perform edge detection on the collected image to obtain a contour image, and mark the intersections of four boundaries of the contour edge of the contour image to obtain four marker points;
[0061] The coordinate module is used for detection in an area including four marked points, detects four marked holes and obtains their respective center positions, and takes the center position of one of the four marked holes as the origin, and simultaneously establishes the first a coordinate system and a second coordinate system;
[0062] The extraction module is used to extract the coordinates of the center points of the four marked holes i...
Embodiment 2
[0086] The only difference from Embodiment 1 is that before the edge detection is performed on the collected image to obtain the outline image, the collected image is processed so that the image can clearly show the outline of the PCB board. Specifically, the image processing tool of MATLABsoftware is called, and the collected image is processed by using image grayscale, image binarization, image segmentation, and image extraction functions, so that the image can clearly show the PCB board. The purpose of the outline.
Embodiment 3
[0088] The only difference from Embodiment 2 is that the PCB board is placed on the work station by the staff, and the work station is a rectangular wire frame drawn on the work table, and the PCB is placed in the rectangular wire frame. Perform edge detection on the collected image to obtain a contour image, and mark the intersection of the four boundaries of the contour edge of the contour image to obtain four marker points A, B, C, D, where A, C are relative, B, D is opposite, connect A and C to get straight line AC, connect B and D to get straight line BD, straight line AC and straight line BD intersect at point O. Then judge whether ∠AOB is equal to 127 degrees, that is, 2×arctan2. If ∠AOB is equal to 127 degrees, it means that the PCB board is not wrong, and then determine the offset angle of the PCB board according to the preset line. The preset line can be any side of the rectangular frame. Move the PCB board and adjust the offset angle so that Each side of the PCB bo...
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Abstract
The invention relates to the technical field of electronic componentprocessing, in particular to a positioning system for electronic componentprocessing. The system comprises an acquisition module for acquiring an image of a PCB; a contour module used for marking the intersection of the four boundaries of the contour edge of the contour image; a coordinate module used for establishing a first coordinate system and a second coordinate system; an extraction module used for respectively calculating a first coordinate value of the punching point in the first coordinate system and a second coordinate value of the punching point in the second coordinate system; a conversion module used for converting the first coordinate value and the second coordinate value according to a coordinate conversion formula; a coordination module used for determining a positioning coordinate value for positioning the punching point according to the priorities of the first coordinate value and the second coordinate value when the conversion results are different; an output module used for outputting the positioning coordinate values of the punching points. According to the method, two sets of coordinate systems are established, and compared with the mode that a punching point is directly positioned through a single coordinate system, the deviation of the position of the punching point can be effectivelyreduced.
Description
technical field [0001] The invention relates to the technical field of electronic componentprocessing, in particular to a positioning system and method for electronic component processing. Background technique [0002] An electronic component is a basic element in an electronic circuit, usually individually packaged and has two or more leads or metal contacts. Printed circuit board, referred to as PCB (Printed Circuit Board), is an important electronic component, which is not only the support of electronic components, but also the carrier of connection. Due to the small size of the PCB itself, and consumers' pursuit of "smaller, lighter, and thinner" electronic products, this poses new challenges to the processing technology of the PCB board, especially the need for precise positioning when punching holes . [0003] For example, document CN108876850A discloses a method for punching and locating PCB boards, including: photographing the PCB board to be processed, and collec...
Claims
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Application Information
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