Code Reader Camera Layout for Stable Logistics Code Reading
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Solution Overview
Problem
Existing code reader systems struggle to maintain reading stability in logistics sites where workpiece sizes, distances, and code positions vary, leading to potential reading errors.
Innovation Solution
A code reader system that includes cameras to capture images of workpieces, a controller to analyze coordinate transformations, and a simulation device to evaluate reading stability, allowing for adjustments in camera mounting and installation angles to prevent errors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a code reader system is used in logistics sites with varying workpiece sizes and code positions, then the system must handle diverse workpiece variations, but reading stability deteriorates due to misalignment and positioning variability
Solution Approach 1:
The system dynamically adjusts imaging parameters based on real-time workpiece detection. The controller modifies capture regions, exposure settings, and focal points according to the detected workpiece size, code position, and surface orientation, enabling the system to adapt to varying logistics conditions while maintaining reading stability
Solution Approach 2:
The system changes multiple imaging parameters simultaneously including capture region size, camera angle, focal length, and exposure time based on detected workpiece characteristics. This multi-parameter adjustment allows the system to handle diverse workpiece variations while maintaining consistent code reading quality
2Ease of operation
If the camera mounting position and installation angle are fixed, then the system structure is simple, but reading errors occur when workpieces are misaligned or positioned differently
Solution Approach 1:
The system performs preliminary detection of workpiece position, size, and code location before code reading. This preliminary action allows the controller to pre-adjust imaging parameters and capture regions, ensuring accurate code reading even when workpieces are misaligned or positioned differently from standard configurations
Solution Approach 2:
The system automatically detects workpiece characteristics and self-adjusts imaging parameters without requiring manual intervention. The controller autonomously modifies capture regions, camera angles, and exposure settings based on real-time detection, eliminating the need for complex manual mounting adjustments while maintaining reading accuracy
3Area of stationary object
If multiple surfaces of workpieces are imaged to improve code detection, then the area captured increases, but the complexity of image processing and analysis increases
Solution Approach 1:
The controller segments the imaged region into multiple candidate regions corresponding to different workpiece surfaces. By dividing the large imaged area into smaller, manageable segments, the system can efficiently process and analyze each surface separately, reducing overall processing complexity while maintaining comprehensive code detection coverage
Solution Approach 2:
The system applies different processing strategies to different imaged surfaces based on their specific characteristics. Each surface region is analyzed with appropriate parameters and algorithms tailored to its orientation, lighting conditions, and code likelihood, optimizing processing efficiency while maintaining detection accuracy
Data Source
AI summary
To prevent reading errors of codes attached to workpieces being transported in logistics. A code reader system comprises: one or more sensors that detect a workpiece and measure dimensions of the workpiece; one or more cameras that capture at least one image of the workpiece; a decoding unit that performs decoding processing on at least one image; an output unit that outputs information indicating the reading stability for each surface of the workpiece using one or more cameras, based on installation information of the one or more sensors, installation information of the one or more cameras, conveying speed, and the workpiece dimensions; and a screen generation unit that generates a screen to display on a display device the results of the decoding processing of the code attached to the workpiece and information indicating the reading stability for each surface of the workpiece.