Radial Camera Array Inspection for Freefalling Components
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Solution Overview
Problem
Current inspection systems for manufactured components lack efficient methods to detect defects and sort products based on tolerable ranges during the production process, leading to potential defects being overlooked or misclassified.
Innovation Solution
An inspection system comprising a framework with multiple cameras arranged radially about an axis, an inlet conveyance system, and an outlet conveyance system controlled by a controller, which directs components to either a passing or rejected path based on defect detection, ensuring accurate sorting and classification of manufactured components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple cameras are arranged radially to capture images from various angles, then measurement precision and defect detection capability are improved, but device complexity increases
Solution Approach 1:
The inspection system divides the inspection task into multiple viewing angles by segmenting the camera array into multiple positions arranged radially around the component path. Each camera captures images from a specific angle, and the controller synthesizes these multiple views to achieve comprehensive defect detection with high measurement precision.
Solution Approach 2:
The system transitions from single-plane camera arrangement to three-dimensional radial arrangement around the component inspection path. This spatial dimensionality change allows cameras to capture defects from multiple perspectives simultaneously, significantly improving detection accuracy while maintaining a compact inspection station structure.
2Productivity
If components are directed through freefall for inspection, then productivity increases, but measurement precision may deteriorate due to motion blur
Solution Approach 1:
The system employs periodic strobe illumination synchronized with the component freefall motion. The strobe light freezes the motion at specific intervals, capturing sharp images of moving components without motion blur, thereby maintaining measurement precision while allowing high-speed continuous inspection.
Solution Approach 2:
The system replaces mechanical stopping or slow-moving inspection mechanisms with optical freezing using strobe illumination. This substitution allows components to continue moving at high speed through freefall while the optical system captures clear images, maintaining both productivity and measurement precision.
3Measurement precision
If a radial camera array is used to inspect free-falling components, then measurement precision is improved, but device complexity increases
Solution Approach 1:
The system merges multiple camera functions into a unified radial array configuration around the component inspection path. All cameras are synchronized and controlled by a single controller that coordinates image capture timing and synthesizes data from all angles, reducing operational complexity despite the increased number of sensors.
Solution Approach 2:
The radial camera array serves multiple inspection functions simultaneously - detecting defects from various angles, measuring dimensional features, and inspecting surface characteristics. This multi-functionality consolidates what would otherwise require separate inspection systems into a single versatile inspection station.
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
The system effectively detects defects and sorts components into tolerable and non-tolerable ranges, enhancing the efficiency and accuracy of the inspection process by utilizing a radial camera array and conveyance system to direct components accordingly.
Implementation Method 1
Each sensor is focused toward a center region of the inspection station to capture images of manufactured components free falling through the inspection station
Data Source
AI summary
An inspection station for manufactured components includes a framework and a plurality of cameras. The framework has of a plurality of vertically stacked and spaced apart plates. Each plate defines a central orifice. The central orifices of each plate are aligned along an axis. The manufactured components are configured to freefall through the central orifices defined by the plates. The plurality of cameras is secured to the framework. Each camera is focused toward a region within the framework to capture images of the manufactured components. The plurality of cameras is arranged in an array that extends radially about the axis. At least one of the cameras is positioned at an angle above a horizontal plane that is perpendicular to the axis and intersects the region within the framework. At least one of the cameras is positioned at an angle below the horizontal plane.