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

On-line detection method and detection device of yarn quality based on ccd

A detection method and yarn quality technology are applied in the field of CCD-based yarn quality online detection method and detection device, which can solve the problems of low detection efficiency, poor detection accuracy, difficult yarn image collection, etc. The effect of increased processing speed and improved image capture quality

Active Publication Date: 2020-06-12
DONGHUA UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problems of yarn image acquisition difficulty, poor detection accuracy and low detection efficiency in the above-mentioned prior art, and to provide a yarn image acquisition method with good detection accuracy and high detection efficiency. On-line detection method of yarn quality

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
  • On-line detection method and detection device of yarn quality based on ccd
  • On-line detection method and detection device of yarn quality based on ccd
  • On-line detection method and detection device of yarn quality based on ccd

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] A kind of detecting device based on the yarn quality of CCD, such as figure 1 As shown, it includes an image collector (CCD charge-coupled device 1 and an object-space telecentric lens 2 installed on the CCD charge-coupled device), a light source 5, a signal processor 11, a driving device 10, a yarn instantaneous stabilizing device (long rod 6), A / D converter 9, computer 14, display elements (display 13 and printer 12, there may be only printer or only display).

[0050] The image collector (that is, the CCD charge-coupled device 1 and the object-space telecentric lens 2 installed on the CCD charge-coupled device) and the light source 5 are distributed on both sides of the yarn 7. The light emitted by the light source 5 is parallel light, and the yarn is instantaneously stable. The device is that two mutually parallel long rods 6 are positioned at the side of the yarn 7, and it can also be positioned at the top or the bottom of the yarn 7. Algorithm microprocessor chip...

Embodiment 2

[0061] A kind of detection device and online detection method thereof based on the yarn quality of CCD, such as image 3 As shown, it is basically the same as Example 1, the difference is that the instant yarn stabilizing device used is two circular wheels 8, and the circumferential surface of the circular wheels 8 is provided with a right-angle groove, and the shape of the groove can also be V Type or U-shaped, the inner surface of the groove is smooth, the maximum distance between the broken line running path and the straight running path of the yarn is 1mm; the number of broken points of the broken line is 2, and the distance between two broken points is 200mm The minimum distance between the point and the front roller jaw is 20mm.

Embodiment 3

[0063] A kind of detection device and online detection method thereof based on the yarn quality of CCD, such as Figure 4As shown, it is basically the same as Example 1, the difference is that the instant yarn stabilizing device used is a long rod 6, the number of breakpoints of the folded line running path of the yarn is 1, and the distance between the breakpoint and the front roller nip is 1. The distance between them is 200mm; when collecting the image of the yarn, the image of the yarn in the instantaneous stable state, that is, the yarn in the spinning section between the folding point and the nip of the front roller, is collected.

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 relates to a CCD-based yarn quality on-line detection method and a detection device. The CCD-based yarn quality on-line detection method comprises the steps that images of yarn in a momentary stable state are collected on line and treated, and thus quality information of the yarn is obtained; the momentary stable state refers to that components of the vibration frequency of the yarnwithin the time t in the horizontal and vertical directions are less than or equal to 10 Hz, meanwhile, components of the vibration amplitude in the horizontal and vertical directions are less than orequal to 0.1 mm, and t is the time used by collecting the 10 to 100 images. The detection device comprises a light source, an analog-to-digital converter, an image processor, a display element, an image collector, a signal processor, a driving device and a yarn momentary stabilization device, wherein the image collector, the signal processor, the driving device and the yarn momentary stabilization device are sequentially connected; and the image collector, the analog-to-digital converter, the image processor and the display element are sequentially connected, and the yarn momentary stabilization device has a hook face used for making contact with the yarn to enable the yarn to be in the momentary stable state. The CCD-based yarn quality on-line detection method is high in accuracy and detection efficiency; and the detection device is simple in structure and good in application prospect.

Description

technical field [0001] The invention belongs to the field of spinning quality detection, and relates to a CCD-based online yarn quality detection method and a detection device. Background technique [0002] Patent CN 1299959A discloses a spinning dynamic tension, twist non-contact measuring device and its measuring method. The device uses a CCD image sensor to capture the shape of the yarn balloon in the ring spinning process, and obtains the maximum diameter of the balloon through the image and height, calculate the spinning tension, and combine the front roller speed and spindle speed to calculate the yarn twist. Although this method can realize non-contact measurement, the limitation of this method is relatively large. During the entire spinning process, the rotation frequency of the balloon will change to a certain extent in the actual spinning process. To obtain clear and usable air For the image of the ring shape, the matching line frequency of the CCD must change rap...

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): G01N21/84
Inventor 邵瑞琪程隆棣崔月敏张瑞云全晶薛文良代堃刘蕴莹吕金丹俞建勇王克毅
Owner DONGHUA UNIV
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com