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

Three dimensional reconstruction-based insulator creepage distance measurement system and method

A technology of creepage distance and three-dimensional reconstruction, applied in 3D modeling, details related to processing steps, image data processing, etc., can solve problems such as large measurement deviation

Active Publication Date: 2017-06-30
HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD +1
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a measurement system and method for insulator creepage distance based on three-dimensional reconstruction in order to solve the problem of relatively large measurement deviation caused by manual measurement of insulator creepage distance. v2. The measurement system composed of notebook computers improves the work efficiency of power companies in measuring the creepage distance of insulators

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
  • Three dimensional reconstruction-based insulator creepage distance measurement system and method
  • Three dimensional reconstruction-based insulator creepage distance measurement system and method
  • Three dimensional reconstruction-based insulator creepage distance measurement system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] see Figure 2 ~ Figure 4 , the insulator creepage distance measurement system based on three-dimensional reconstruction, including a horizontal electric turntable (1), a depth sensor Kinect v2 (2), and an ASUS notebook computer (3), is characterized in that: the insulator to be tested faces downward according to the umbrella handle Put the umbrella skirt upwards on the horizontal electric turntable (1) rotating at a constant speed, and place a depth sensor Kinect v2 (2) on the support at a distance of 0.4-4m from the horizontal electric turntable to scan the insulator (4) 360°. Obtain the depth image and color image of the insulator, connect the output of Kinect v2 (2) to the laptop (3), use the KinectFusion algorithm in the laptop (3) to perform 3D reconstruction based on voxel data, and then rely on the voxel grid Data type, select the appropriate cutting surface for cutting, intercept the correct two-dimensional section, and traverse according to the effective contou...

Embodiment 2

[0050] This method for measuring the creepage distance of insulators based on three-dimensional reconstruction uses the above-mentioned system for operation, and is characterized in that the specific operation steps are as follows:

[0051] ① Depth image acquisition: use Kinect v2 (2) to scan the insulator (4) 360°, and collect its depth image;

[0052] ② Reconstruction of 3D model: the collected images are fused into a complete 3D model with voxel grid form through the KinectFusion algorithm;

[0053] ③Find the cutting surface: The key to cutting the voxel grid is to find the correct cutting surface. Due to the complexity of the structure of the insulator (4), it cannot be cut simply and directly. It needs to be cut into 2D section;

[0054] ④ Mesh voxel cutting: Aiming at the structure of the insulator itself, cut along the plane passing through the diameter of the shed of the insulator in the obtained 3D model, divide the insulator into two symmetrical parts, and obtain a ...

Embodiment 3

[0057] This embodiment is basically the same as Embodiment 2, and the special features are as follows:

[0058] 1. the described insulator creepage distance measurement method based on three-dimensional reconstruction, use the KinectFusion algorithm framework to carry out three-dimensional reconstruction in step (2) and obtain the voxel grid with directed distance function;

[0059] 2. In the method for measuring creepage distance of insulators based on three-dimensional reconstruction, before using the KinectFusion algorithm in step (2), first use OPENNI SDK2 to automatically align the coordinate system of the depth camera and the color camera, and take the coordinate system of the depth camera as the global coordinate system to create a voxel grid.

[0060] 3. The insulator creepage distance measurement method based on three-dimensional reconstruction, in step (2), in order to cut the model voxel grid in the follow-up, the image of the insulator (4) facing the depth camera 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 relates to a three dimensional reconstruction-based insulator creepage distance measurement system and method. The system comprises a horizontal electric rotary table, a Kinect v2 and a notebook computer. The method comprises the following operation steps: (1) depth images are collected, (2) a three dimensional model is reconstructed, (3) a cutting plane is searched, (4) grid voxel cutting operation is conducted and (5) creepage distance is calculated. According to the system and method disclosed in the invention, an object with an irregular shape is transformed into voxels for calculation via construction of the three dimensional model for an insulator. The method is simple in operation and accurate in calculation results; a problem that large measurement deviation can be caused when an artificial hand-operated rope is used for measuring the insulator creepage distance can be well solved; time can be saved for manufacture workers and measurement workers, repeated measurement due to inaccurate results can be prevented, and great convenience is provided for an insulator manufacture department and an insulator usage department.

Description

technical field [0001] The present invention relates to a system and method for measuring creepage distance of insulators, in particular to a system and method for measuring creepage distance of insulators based on three-dimensional reconstruction. The insulator is scanned by Kinect and a three-dimensional model in the form of a voxel grid is established, and then Cut the voxel grid, intercept the correct two-dimensional section, and calculate the creepage distance on the two-dimensional image to realize the measurement of the creepage distance. A complete system consisting of electric horizontal turntable, depth sensor Kinect v2 and ASUS laptop is built to realize the measurement of creepage distance of insulators based on 3D reconstruction. Background technique [0002] An insulator is a special insulation control that can play an important role in overhead transmission lines. It is used to increase the creepage distance and is usually made of glass or ceramics. Insulator...

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 Applications(China)
IPC IPC(8): G06T7/00G06T7/13G06T7/60G06T17/20G06T19/20
CPCG06T7/0004G06T7/60G06T17/20G06T19/20G06T2200/08G06T2207/10028
Inventor 彭刚李贤靓钟振鑫黄晓波马志学曾力张云巫小彬钟继萌
Owner HUIZHOU POWER SUPPLY BUREAU OF GUANGDONG POWER GRID CO LTD
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