Image Measuring System Strobe Synchronization
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Solution Overview
Problem
In non-stop image measurement modes, wider strobe illumination pulse widths or longer exposure times lead to increased movement of the measurement stage, compromising measurement accuracy, while ensuring sufficient lighting is necessary for accurate image capture.
Innovation Solution
An image measuring system and method that allows users to select between measurement accuracy prioritized and measurement speed prioritized modes, adjusting strobe pulse width and stage movement speed to balance image quality and efficiency, using a computer-controlled system with processors for stage movement, illumination adjustment, and image processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the strobe illumination pulse width is widened or exposure time is increased to ensure sufficient lighting for accurate image capture, then the quantity of illuminating light increases, but the amount of movement of the measurement stage during image acquisition increases, worsening measurement accuracy
Solution Approach 1:
The system dynamically adjusts the strobe illumination pulse width and stage movement speed based on real-time conditions. The control unit varies the illumination duration and stage velocity to optimize both image quality and measurement accuracy for different measurement scenarios, rather than using fixed parameters
Solution Approach 2:
The system changes physical parameters (strobe pulse width, exposure time, stage speed) to resolve the contradiction. By adjusting these parameters dynamically, the system can provide sufficient illumination while minimizing stage movement during capture, thus maintaining measurement accuracy
2Duration of action of moving object
If the duration of capturing image information is increased to ensure sufficient exposure for measurement, then the quantity of illuminating light increases, but the amount of movement of the stage increases, compromising measurement accuracy
Solution Approach 1:
The system dynamically adjusts the exposure time and stage movement speed based on real-time conditions. The control unit varies these parameters to optimize both image quality and measurement accuracy for different measurement scenarios
Solution Approach 2:
The system changes physical parameters (exposure time, stage speed) to resolve the contradiction. By adjusting these parameters dynamically, the system can provide sufficient exposure while minimizing stage movement during capture, thus maintaining measurement accuracy
3Productivity
If the measurement stage moves continuously without stopping at measurement positions to improve throughput, then productivity increases, but the amount of movement during image acquisition increases, worsening measurement accuracy
Solution Approach 1:
The system uses periodic strobe illumination synchronized with the continuous stage movement. The strobe light captures images at specific intervals during the continuous motion, allowing throughput improvement while maintaining measurement accuracy through precise timing
Solution Approach 2:
The measurement stage moves continuously without stopping at measurement positions, maintaining constant productive action. The strobe illumination and shutter mechanism enable image capture during this continuous motion, eliminating idle time while preserving measurement quality
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 efficient image measurements by optimizing stage movement speed and illumination parameters, maintaining high accuracy and throughput by allowing users to prioritize either measurement accuracy or speed based on specific requirements.
Implementation Method 1
This image measuring machine irradiates the measuring object with strobe illumination
Implementation Method 2
captures instantaneous image information at designated measurement positions
Data Source
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Figure 2
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AI summary
Within a prioritized mode selection dialog, either a measurement accuracy prioritized mode or a measurement speed prioritized mode is selected. If the measurement accuracy prioritized mode is selected, then processing for entering a tolerable amount of movement is executed. Then, a relative movement speed of a CCD camera to a measurement stage is calculated from the entered amount of movement. Finally, image information is captured at a lower speed than the calculated relative movement speed to execute image measurement. If the measurement speed prioritized mode is selected, then processing for entering a relative movement speed is executed, and image information is captured at the entered relative movement speed to execute image measurement.