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

Automatic pipeline roundness value detection method

A technology for automatic detection and roundness value, which is applied to measuring devices, instruments, and optical devices, etc. It can solve the problems of accidental errors in measurement accuracy and large random errors, and achieve the effect of accurate judgment, reducing interference and improving accuracy.

Active Publication Date: 2016-11-23
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
View PDF5 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The visual inspection method obviously has a lot of randomness and large errors. When the manual measurement method is used, the measurement accuracy will cause large accidental errors due to the differences in the quality and responsibility of the operators. The requirements for the roundness of the pipeline Higher occasions are not suitable
At the same time, it is not suitable for industrial automatic production process

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
  • Automatic pipeline roundness value detection method
  • Automatic pipeline roundness value detection method
  • Automatic pipeline roundness value detection method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0039] like figure 1 , figure 2 and image 3 As shown, the automatic detection method of pipe roundness value, the specific method is:

[0040] Adjust the horizontal distance between the image acquisition device (such as a camera or camera) and the end face of the pipe, so that the outer edge of the collected pipe end face in the diameter direction is the minimum distance from the image frame collected, which is less than or equal to the side length of the image frame parallel to the distance direction 5%; after adjusting the horizontal distance, image acquisition is performed on the end face of the pipeline, and the collected image is sent to the image processing system; the image processing system performs image processing on the collected end face image to extract the edge of the end face, and obtains the roundness value of each end face .

[0041] The image acquisition device collects the image of the end face of the pipeline. Before the image acquisition, the horizont...

specific Embodiment 2

[0043] On the basis of the specific embodiment 1, the method further includes using a laser ranging module to detect the horizontal distance between the image acquisition device and the end face of the pipeline. By detecting the horizontal distance between the image acquisition device and the end face of the pipeline, the specific position of the image acquisition focus of the image acquisition device is determined.

specific Embodiment 3

[0044] On the basis of the specific embodiment 1 or 2, the method further includes, using the image acquisition device to align with the center of the end surface of the pipeline to acquire images of the two end surfaces.

[0045] In addition to adjusting the horizontal distance between the image acquisition device and the end face of the pipeline, it also includes adjusting the position of the image acquisition device so that the image acquisition focus of the image acquisition device is aligned with the center of the end face of the pipeline for image acquisition, and then the end face of the pipeline is adjusted. Image Acquisition. Use an image acquisition device (such as a camera or camera) to align the center of the circle for image acquisition. Before image acquisition, adjust the position of the image acquisition device so that the focus of image acquisition is aligned with the center of the pipe end face, and the line connecting the focus of image acquisition and the c...

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 provides an automatic pipeline roundness value detection method. According to the detection method, a horizontal distance between an image acquisition device and a pipeline end surface is adjusted to make a smallest distance from an acquired outer edge in a pipeline end surface diameter direction to an acquired image frame be smaller than or equal to 5% of length of the image frame parallel with the distance direction; after the horizontal distance is adjusted, images of the pipeline end surface are acquired, and the acquired images are sent to an image processing system; the acquired pipeline end surface images are processed through the image processing system to extract end surface edges, and roundness of each end surface is acquired. According to a method in the prior art, gray processing on shot images is carried out to extract end surface edges, a horizontal diameter and a vertical diameter of a pipeline are calculated according to pixels, and the detection method is different from the manual measurement method in the prior art; according to the detection method provided by the invention, an optimal horizontal acquisition distance of the image acquisition device and the acquired pipeline end surface is determined, the images of the pipeline end surface are acquired at the optimal acquisition distance, and reduction of interference and improvement of accuracy can be realized.

Description

technical field [0001] The invention relates to an automatic detection method for the roundness value of a pipeline, in particular to an automatic detection method suitable for the detection of the roundness value of a boiler piping pipeline. Background technique [0002] Before the pipeline is processed, the roundness value of the pipeline needs to be tested to determine whether the pipeline meets the processing requirements. The current practice is: the operator uses the visual method to judge, or uses a tape measure, steel ruler or caliper to measure and calculate the pipeline. roundness value. The visual inspection method obviously has a lot of randomness and large errors. When the manual measurement method is used, the measurement accuracy will cause large accidental errors due to the differences in the quality and responsibility of the operators. The requirements for the roundness of the pipeline Higher occasions are not suitable. It is not suitable for industrialize...

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
IPC IPC(8): G01B11/24
CPCG01B11/2408
Inventor 江华周波付学刚王帅梁银波邓如彬
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
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