Image Measuring System Nonstop Path Planning
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Solution Overview
Problem
Conventional image measuring machines experience accuracy deterioration and mechanical overload when measuring at non-linearly arranged locations due to increased acceleration requirements, leading to vibrations and image quality issues.
Innovation Solution
An image measuring system that calculates a synthesized movement direction and sets a measurement path with way points to smoothly connect measurement points, allowing the imaging device to move without stopping, thus maintaining constant speed and avoiding mechanical overload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the measurement stage moves at constant speed between non-linearly arranged measurement locations, then the measurement throughput is improved, but the acceleration requirement increases causing mechanical overload and vibrations
Solution Approach 1:
The system pre-calculates an optimal measurement path that anticipates directional changes before they occur. By computing the path in advance based on the spatial arrangement of measurement points, the system prepares the movement trajectory to minimize sudden acceleration demands, thus preventing mechanical overload while maintaining high throughput.
Solution Approach 2:
The system introduces curved transition paths between measurement locations instead of straight linear movements. When measurement points are non-linearly arranged, the system generates smooth curved trajectories that gradually change direction, avoiding sharp angular turns that would require high acceleration forces and cause vibrations.
2Measurement precision
If the measurement stage stops at each measurement location to capture images, then the image quality is maintained, but the measurement time increases reducing throughput
Solution Approach 1:
The system enables continuous movement of the measurement stage between measurement locations without stopping. By capturing images at multiple locations during continuous motion, the system eliminates idle time between measurements, significantly reducing total measurement time while maintaining image quality through controlled exposure and illumination.
Solution Approach 2:
The system uses periodic strobe illumination synchronized with the moving measurement stage. The illumination is activated in periodic pulses that correspond to the timing of image capture, allowing clear images to be captured during motion without requiring the stage to stop, thus maintaining both image quality and throughput.
3Device complexity
If the measurement path follows straight lines between measurement points, then the path is simple, but the directional variation angle increases causing vibrations and image shakes
Solution Approach 1:
The system replaces straight-line paths with curved trajectories when measurement points are non-linearly arranged. By generating smooth curved paths that gradually transition between directions, the system minimizes sharp angular changes that would cause mechanical vibrations and image shaking, thus improving image stability without significantly complicating the path.
Solution Approach 2:
The system dynamically adjusts the measurement path based on the spatial relationships between measurement points. When directional changes are detected, the system adapts the path geometry to optimize smoothness, creating a flexible measurement trajectory that responds to the specific arrangement of points while maintaining vibration-free operation.
Data Source
AI summary
An image measuring system comprises a measurement point acquire, a measurement direction calculator, a synthesized direction calculator operative to calculate a synthesized direction resulted from synthesis of movement directions before and after the measurement point, a fore/aft-running point calculator operative to calculate a forerunning point at a position spaced a certain distance backward in the synthesized direction from the measurement point and to calculate an aft-running point at a position spaced a certain distance forward in the synthesized direction from the measurement point, a way point calculator operative to calculate a plurality of way points arranged on a path smoothly connecting the aft-running point to the forerunning point, and a measurement path setter operative to set a measurement path following the synthesized directions and passing through the calculated way points and the measurement points.