Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Device and method for dynamic detection of mirror surface scratches

A dynamic detection and mirror technology, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems that manual detection methods cannot meet the high-quality and high-efficiency production needs, light reflection interference on the mirror surface, and irregular shape of scratches, etc. , to achieve the effects of easy implementation, easy popularization and application, and efficient collection

Active Publication Date: 2021-03-23
SHANGHAI UNIV OF ENG SCI
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional mirror quality inspection methods are all manual inspection methods, but with the high quality requirements of users and the intensification of market competition, the requirements for mirror quality are getting higher and higher. For example, automobile rearview mirrors require that there should be no deformation, blur, or streaks on the mirror surface. , Bubbles, scars, cracks, inclusions and other defects, and there are strict requirements on the flatness of the mirror surface, and even some curvature radii on the edge of the mirror. At this time, the traditional manual inspection method cannot meet the high-quality and high-efficiency production needs.
[0004] Nowadays, in the process of industrialized production of mirrors, surface defects such as scratches are often encountered, and these problems are extremely challenging for manual inspection and machine vision inspection
The difficulty of detecting scratches on the surface of the mirror lies in: irregular shape of scratches, low contrast between depth and light, reflection of light on the surface of the mirror interferes with the detection process and results

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for dynamic detection of mirror surface scratches
  • Device and method for dynamic detection of mirror surface scratches

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0037] like figure 1 and figure 2 The mirror surface scratch dynamic detection platform shown includes a dark box 1, a first conveyor belt 2 and a second conveyor belt 3 for transmitting the lens 9 to be inspected, and a lifting rod 4 is arranged between the first conveyor belt 2 and the second conveyor belt 3 , the camera obscura 1 is also provided with a first camera fixing rod 5, a second camera fixing rod 6, a scanning lamp dynamic slide rail 7 and a scanning lamp tube 8, and the first camera fixing rod 5 and the second camera fixing rod 6 are arranged on the bracket Above the lifting bar 4, a first CCD camera 51 is fixed on the first camera fixing bar 5, a second CCD camera 61 is fixed on the second camera fixing bar 6, and the first CCD camera 51 and the second CCD camera 61 are also positioned at the lifting position. above the rod 4...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention belongs to the technical field of machine vision defect detection, and more specifically relates to a mirror surface scratch dynamic detection device, and a method. The mirror surface scratch dynamic detection device is an intelligent automatic detection platform which is provided with a camera obscura, a mobile scanning light source, and symmetrically arranged high speed array CCD cameras, is capable of realizing multiple working station switching of lens to be detected, and collecting gray level images of lens to be detected at different positions, different reflective angles,and different high light zone situations rapidly, accurately, and repeatedly. Gassian low-pass filtering algorithm, laplace operator, binaryzation, and Hough transforming image vision algorithm are adopted successively, so that rapid, accurate, and stable extraction of scratches of lens to be detected is realized. The mirror surface scratch dynamic detection device is especially suitable to be used for extraction of mirror surface extremely weak scratches, increasing detection efficiency and detection quality greatly, and reducing cost. The mirror surface scratch dynamic detection device and the method are simple, are capable of satisfying on-line detection production mode, is stable and reliable, and is convenient for popularization and applications.

Description

technical field [0001] The invention belongs to the technical field of machine vision defect detection, and in particular relates to a dynamic detection device and method for mirror surface scratches. Background technique [0002] With the continuous development of the glass industry and the increasing demand, the quality requirements for glass products are also getting higher and higher. Due to the influence of manufacturing process, human factors and other factors, the original glass plate may have defects at any stage of the production process. At this time, glass quality inspection plays a very important role. According to the current standard of glass, the common defects of glass mainly include: air bubbles, tin sticking, scratches, inclusions, etc. [0003] The traditional mirror quality inspection methods are all manual inspection methods, but with the high quality requirements of users and the intensification of market competition, the requirements for mirror qualit...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/892G01N21/896
CPCG01N21/892G01N21/896
Inventor 张伟伟糜泽阳
Owner SHANGHAI UNIV OF ENG SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products