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Visual detection method and system for pasting quality of FPC reinforcing pieces

A technology of visual inspection and reinforcing sheet, which is applied in the direction of measuring device, image enhancement, image data processing, etc., can solve the problems of low detection accuracy and low FPC detection efficiency.

Active Publication Date: 2016-02-17
HUBEI UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a visual detection method and detection system for the quality of FPC reinforcing sheet patch, which solves the problems of low detection efficiency and low detection accuracy of the current soft board type FPC

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  • Visual detection method and system for pasting quality of FPC reinforcing pieces
  • Visual detection method and system for pasting quality of FPC reinforcing pieces
  • Visual detection method and system for pasting quality of FPC reinforcing pieces

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Embodiment Construction

[0041] The present invention will be described in detail below in combination with specific embodiments.

[0042] FPC reinforcing sheet patch quality visual detection system of the present invention such as figure 1 and figure 2 As shown, it includes the control cabinet 1, the control cabinet 1 is equipped with a display screen 2, an image acquisition device 3, and a precision cross table 4, and the cross table 4 is provided with a tray 5 for clamping the FPC soft board, wherein:

[0043] Image acquisition device 3 comprises camera 6, lens 7, arc frame 8 and laser emitter 9, lens 7 is installed on camera 6, and lens 7 and laser emitter 9 arrange alignment along the normal direction of arc frame 8 The tray 5, the camera 6 and the laser emitter 9 can move along the rails on the arc frame 8, and by manually adjusting the positions of the camera 6, the lens 7 and the laser emitter 9 on the arc frame 8 to meet the requirements of the lens imaging and Scheimpflug condition detect...

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Abstract

The invention discloses a visual detection method and system for the pasting quality of FPC reinforcing pieces. The visual detection system comprises a control cabinet, a display screen, an image collection device, a cross-shaped precision worktable and a tray. The image collection device comprises a camera, a lens, an arc-shaped rack and a laser transmitter. According to the visual detection method and system, the arc-shaped rack is adopted for simplifying the calibration process and reducing the influences of hardware equipment on image collection, Guass-Laplacian operators are utilized on the basis of a laser triangulation method, limit type threshold segmentation is introduced, and meanwhile morphological close operation is adopted for separating out the optical center areas of laser spots; the invariance of moment is utilized for performing ellipse fitting, variation of the center position of an ellipse is converted into variation of the thickness of the reinforcing pieces, and therefore observation is easier. By means of the visual detection method and system, the pasting quality of the reinforcing pieces is automatically detected, detection precision is high, detection efficiency is improved, working intensity is relieved, manual operation can be completely replaced, and the arc-shaped rack can also be applied to stereoscopic visional detection.

Description

technical field [0001] The invention belongs to the technical field of quality inspection equipment for flexible printed circuit boards, and relates to a visual inspection method and a detection system for the quality of FPC reinforcing sheets. Background technique [0002] Flexible printed circuit board (FlexiblePrintedCircuit, FPC) is a highly reliable printed circuit made of polyimide or polyester film, widely used in aerospace, military, mobile phones, digital cameras and other fields . Due to its soft material, FPC needs to be pasted with reinforcement sheets on certain designated parts to strengthen its hardness, and placement errors are one of the important reasons for product defects in the entire assembly process, so its placement performance is good or bad. Quality control of the production process is very important. Affected by the placement machine, adhesive glue, and reinforcing sheet material, there will often be situations such as wrong, missing, and over-at...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/956G06T7/00
CPCG01N21/956G01N2021/95638G06T7/001G06T2207/30141
Inventor 孙国栋赵大兴张杨王璜艾成汉梅术正林松杨林杰王博
Owner HUBEI UNIV OF TECH
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