Multi-Surface Workpiece Detection With Rotary Camera Offsets
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Solution Overview
Problem
Existing workpiece detection devices can only detect one surface at a time, leading to low efficiency and require large space due to the need for cameras to be positioned at a long distance from the rotary table, which is not conducive to space-saving designs.
Innovation Solution
A detection device with a rotary table and multiple photographing devices positioned around it, each with an image capture device that captures images of different surfaces at defined offset angles, allowing for simultaneous detection of multiple surfaces during a single rotation cycle, reducing the overall size and avoiding lighting interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple photographing devices are arranged around the rotary table to detect multiple surfaces simultaneously, then detection efficiency is improved, but device complexity increases
Solution Approach 1:
The detection system is segmented into multiple independent photographing devices, each responsible for capturing images of specific surfaces. The rotary table is divided into multiple positioning angles, with each angle corresponding to a specific surface orientation. This segmentation allows simultaneous detection of multiple surfaces while maintaining manageable system complexity through modular architecture.
Solution Approach 2:
The system transitions from single-surface detection to multi-surface detection by adding spatial dimensions. Multiple photographing devices are arranged at different angular positions around the rotary table, utilizing the rotational dimension to enable simultaneous detection of multiple surfaces without significantly increasing linear space requirements.
2Measurement precision
If cameras are positioned at a long distance from the rotary table to meet focal distance requirements, then image quality is maintained, but the overall device size increases
Solution Approach 1:
The system employs a rotary table that dynamically adjusts the position of workpiece surfaces relative to fixed photographing devices. By rotating the table to precise angles, surfaces are brought into optimal positioning for image capture, eliminating the need for cameras to be positioned at long distances. This dynamic positioning maintains image quality while compacting the overall device footprint.
Solution Approach 2:
The rotary table pre-positions surfaces at specific angles before image capture occurs. By rotating the table to predetermined angular positions, the system ensures that each surface is optimally oriented for detection by the corresponding photographing device, maintaining focal distance requirements without requiring large camera-to-table distances.
3Device complexity
If a single camera detects one surface at a time, then device complexity is reduced, but detection time increases
Solution Approach 1:
The rotary table enables continuous detection by maintaining constant rotation while multiple photographing devices simultaneously capture images at different angular positions. This continuous rotational motion allows the system to detect multiple surfaces in a single rotation cycle, eliminating the need for sequential detection and significantly reducing total detection time while keeping the camera system relatively simple.
Data Source
AI summary
A detection device for detecting a workpiece with multiple surfaces includes a rotary table carrying the workpiece and moving the workpiece by rotation and a plurality of photographing devices arranged at a plurality of different positions around the rotary table. Each photographing device has an image capture device capturing an image of a corresponding surface of the workpiece that is moved to the image capture device. An orientation of the image capture device is defined by a first offset angle and a second offset angle when the image capture device captures the image of the corresponding surface of the workpiece.