Four Linear Cameras for Glass Gob Free-Fall Measurement
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Solution Overview
Problem
Existing methods for measuring the kinematic characteristics of a glass gob in a glass article molding installation face challenges in industrial environments due to interference from numerous components, requiring high-performance cameras for complete gob vision which is often not feasible, leading to inaccurate measurements, especially near the shear where visibility is obstructed.
Innovation Solution
A device and method using four distinct linear cameras with linear photoelectric sensors and lenses, capturing four series of linear digital images from different angles to measure kinematic characteristics like horizontal translation, rotation, and deformation of the glass gob, allowing accurate measurement even in obstructed environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high-performance matrix cameras are used to acquire complete views of the gob, then measurement precision is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent divides the measurement system into multiple linear cameras (at least two, preferably three or four) positioned at different locations, each capturing a portion of the gob. These segmented views are then computationally reconstructed to form a complete three-dimensional representation, achieving measurement precision comparable to matrix cameras while using simpler, more economical linear camera components.
Solution Approach 2:
The patent transitions from two-dimensional matrix camera images to three-dimensional reconstruction through computational methods. By capturing images from multiple linear cameras positioned at different spatial locations and angles, the system reconstructs the gob's three-dimensional geometry and kinematic characteristics, achieving complete gob vision without requiring expensive high-performance matrix cameras.
2Measurement precision
If complete vision of the gob is required, then measurement precision is improved, but the installation becomes more complex and harder to implement in industrial environments
Solution Approach 1:
The patent segments the vision system into multiple linear cameras positioned at different locations around the gob path. Each camera captures a specific view, and the computational reconstruction method integrates these segmented views into a complete three-dimensional representation, achieving complete gob vision without requiring a single complex high-performance camera system.
Solution Approach 2:
The patent introduces computational reconstruction algorithms as an intermediary process between the linear camera captures and the final measurement results. This computational mediator synthesizes the partial views from multiple simple linear cameras into a complete three-dimensional model, enabling complete gob vision while maintaining simple camera hardware and installation.
3Device complexity
If linear cameras are used instead of matrix cameras, then device complexity is reduced, but the ability to determine kinematic characteristics is worsened
Solution Approach 1:
The patent uses multiple linear cameras positioned at different locations to segment the capture of the gob's motion. By coordinating these segmented captures and applying computational reconstruction, the system determines complete kinematic characteristics including position, velocity, acceleration, and orientation, overcoming the limitations of individual linear cameras while maintaining device simplicity.
Solution Approach 2:
The patent elevates the measurement capability from two-dimensional linear camera images to three-dimensional kinematic analysis through computational reconstruction. The system processes images from multiple linear cameras positioned at different spatial locations and angles, reconstructing the gob's three-dimensional motion characteristics, thereby achieving full kinematic determination with simple linear camera hardware.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables precise determination of kinematic characteristics, such as horizontal translation and rotation, facilitating controlled operation of the glass article molding installation by adjusting parameters like shear position and speed, improving accuracy and efficiency.
Implementation Method 1
A device and method using four distinct linear cameras with linear photoelectric sensors and lenses, capturing four series of linear digital images
Implementation Method 2
four distinct linear cameras with linear photoelectric sensors and lenses, capturing four series of linear digital images
Implementation Method 3
measuring the kinematic characteristics of the free fall of a glass gob in a glass article molding installation
Data Source
AI summary
The invention relates to a device and a method for measuring the kinematic characteristics of free fall of a glass gob with four distinct linear cameras each having an observed linear field intercepting the theoretical free fall path, respectively at a first high point of interception and at a first low point of interception, offset from each other according to the theoretical free fall path, and respectively at a second high point of interception and at a second low point of interception, offset from each other along the direction of the theoretical free fall path, the high respectively low optical axes being distinct from each other in projection on a plane perpendicular to the direction of the theoretical free fall path. The invention also comprises a method for controlling a glass article molding installation.