A pressure vessel airtightness detection method based on background modeling and centroid clustering

A technology for air tightness detection and pressure vessels, which is applied to the liquid tightness measurement using liquid/vacuum degree, and detects the appearance of fluid at the leak point, the direction of the instrument, etc., and can solve the problem that the detection algorithm cannot be applied to the actual scene.

Active Publication Date: 2020-01-07
ZHEJIANG UNIV OF TECH
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the detection algorithm of shooting bubbles from the side cannot be applied to the actual scene

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
  • A pressure vessel airtightness detection method based on background modeling and centroid clustering
  • A pressure vessel airtightness detection method based on background modeling and centroid clustering
  • A pressure vessel airtightness detection method based on background modeling and centroid clustering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The specific implementation of the pressure vessel air tightness detection method based on background modeling and centroid clustering of the present invention will be described in detail below with reference to embodiments.

[0031] The pressure vessel air tightness detection method based on background modeling and centroid clustering of the present invention specifically includes the following steps:

[0032] Step 1: Set the original pressure value of the pressure vessel to P 0 , The pressure value after T time is P 1 , When P 1 -P 0 When ≤Δ, Δ is the pressure difference threshold, which means that there is no pressure; when P 1 -P 0 >Δ, it means it is pressurizing and the air tightness test starts;

[0033] Step 2: Take n frames of video after the airtightness test starts, n=t*f, where t is the duration of the test and f is the video frame rate; mark n frames as I 1 ,I 2 ,...,I n For I i , I=1,2,...,n is grayed out to get the corresponding grayscale image G i ; In this embod...

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 discloses a pressure vessel airtightness detection method based on background modeling and centroid clustering, comprising the following steps: Step 1: Set the original pressure value of the pressure vessel as P 0 , the pressure value after T time is P 1 , when P 1 -P 0 ≤Δ, Δ is the pressure difference threshold, it means no pressurization; when P 1 -P 0 When >Δ, it means that it is pressurizing and the airtightness test starts; Step 2: Take n frames of video after the airtightness test starts, n=t*f, where t is the test duration, and f is the video frame rate ; Record n ​​frames of images as I 1 ,I 2 ,...,I n , to I i , i=1,2,...,n is grayscaled, and the corresponding grayscale image G is obtained i The beneficial effects of the present invention are: the present invention is based on background modeling and centroid clustering, combined with bubble size, quantity, and dynamic characteristics, can accurately determine the airtightness of the pressure vessel and accurately locate the air leakage area at the same time.

Description

Technical field [0001] The invention belongs to the field of special equipment safety supervision and inspection, and specifically is a method for detecting the air tightness of a pressure vessel in a water immersion method based on a background modeling and a centroid clustering algorithm. Background technique [0002] Pressure vessel is a common equipment for storing gas or liquid and belongs to the category of special equipment. A pressure vessel with hidden quality hazards will not only affect the function of the product itself, but also cause dangerous events such as fires and explosions in severe cases. Therefore, the air tightness test of the pressure vessel during the production process is an important part of ensuring quality. [0003] Most domestic pressure vessel manufacturers use the water immersion method for air tightness testing. The traditional method uses manual observation of bubbles in the water to determine the air tightness of the pressure vessel, but long-term...

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): G01M3/10G06K9/62G06T7/00
CPCG06T7/0004G01M3/10G06T2207/20036G06T2207/10016G06F18/23
Inventor 高飞尤黄宇王孖豪卢书芳张元鸣陆佳炜张永良肖刚
Owner ZHEJIANG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap