A method and system for calculating a glass ribbon edge position and a draw edge wheel press edge parameter

By defining the mapping relationship between the image and camera coordinate systems and the world coordinate system, extracting key feature points and performing coordinate transformation, and combining Kalman filter calibration, the problem of insufficient accuracy in calculating the position of the edge puller and the edge of the glass strip and the edge pressing parameters in the existing technology is solved, and high-precision float glass production is realized.

CN122156516APending Publication Date: 2026-06-05BENGBU TRIUMPH ENG TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BENGBU TRIUMPH ENG TECH CO LTD
Filing Date
2026-01-07
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

In existing technologies, image processing techniques suffer from poor image quality, low feature extraction accuracy, large coordinate transformation errors, severe model simplification, and poor dynamic adaptability. These issues result in insufficient accuracy in calculating the position of the edge puller and the edge of the glass strip, as well as the edge pressing parameters, thus affecting the production quality of float glass.

Method used

By defining the mapping relationship between the image coordinate system, camera coordinate system and world coordinate system, camera calibration is performed, key feature points are extracted and coordinate transformation is performed based on the camera projection model, and dynamic calibration is combined with Kalman filtering to optimize the calculation of edge compression parameters.

Benefits of technology

The calculation accuracy of the edge position of the edge-pulling wheel and the edge of the glass strip as well as the edge-pressing parameters has been improved, and the error caused by camera dynamic drift has been reduced, thus realizing high-quality float glass production.

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    Figure CN122156516A_ABST
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Abstract

The application discloses a kind of glass ribbon plate edge position and the calculation method and system of edge roller edge parameter, belong to float glass production technical field, solve how to improve the problem of glass ribbon plate edge position and the calculation precision of edge roller edge parameter;First, define the mapping relationship of image coordinate system, camera coordinate system and world coordinate system, especially with glass production line as benchmark, define glass surface as plane;Second, the key features of edge roller and glass ribbon are extracted by image preprocessing and feature extraction technology;Then, the pixel coordinates of key features are converted into world coordinates based on camera projection model and the spatial constraint that glass surface is plane in world coordinate system;Finally, the edge parameter is solved according to the world coordinates of key features and geometric relationship, the application is simplified by glass surface Zw=0 constraint Coordinate conversion, combined with the physical parameters of edge roller Optimize geometric model, effectively reduce the calculation error of edge parameter, improve the calculation precision of edge parameter.
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