Optical Measuring Device with Movable Camera Platform
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current optical measuring methods lack a calibration method that accounts for environmental and operational factors, leading to inaccuracies in measuring displacements and deformations, especially in real-life setups where ideal laboratory conditions are not replicated.
Innovation Solution
Incorporating a displacement device with precision slide guides and calibrated measuring systems on a tripod-mounted camera platform, allowing for independent linear movement and precise adjustment of camera positions, enabling calibration using images of the object and accounting for environmental and operational influences.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If calibration is performed in ideal laboratory conditions using standard calibration objects, then calibration accuracy is improved, but the calibration results do not account for real-life environmental and operational factors
Solution Approach 1:
The patent introduces a calibration object with known three-dimensional coordinates that serves as an intermediary between the ideal calibration standards and the real-life measurement conditions. This calibration object is measured both in the laboratory setting and in the actual measurement environment, allowing the system to determine correction factors that bridge the gap between ideal calibration and real-world application
Solution Approach 2:
The patent changes the parameters of the calibration process by performing measurements under different environmental conditions (temperature, humidity, lighting) and operational states. By measuring the calibration object in various conditions and comparing results to the known reference coordinates, the system derives condition-specific correction factors that adapt the calibration to real-life variations
2Measurement precision
If a static calibration setup is used in the laboratory, then calibration precision is improved, but the entire measuring volume cannot be covered and operational variations are not accounted for
Solution Approach 1:
The patent transitions from a static calibration approach to a dynamic one by moving the camera platform through multiple positions and orientations within the measuring volume. At each position, images of the calibration object are captured, allowing the system to determine calibration parameters that are valid across the entire three-dimensional measurement space rather than just at a single fixed point
3Reliability
If multiple cameras are positioned at fixed locations, then measurement reliability is improved, but the system cannot adapt to different measurement scenarios and environmental conditions
Solution Approach 1:
The patent makes the camera system dynamic by mounting cameras on a movable platform that can be repositioned to different locations and orientations. This allows the same camera system to reliably measure objects in various configurations and environmental conditions, combining the reliability of fixed-position photogrammetry with the adaptability of a movable platform
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
This solution allows for traceable calibration and accurate determination of measuring uncertainty at each point, ensuring reliable measurements across the entire deformation state of the object, even under varying conditions, enhancing the precision and validity of optical measuring results.
Implementation Method 1
photogrammetry is a method for measuring objects according to their position and shape. In this method measuring does not take place directly on the object to be measured, but instead indirectly on previously taken measuring images of the object to be measured
Data Source
AI summary
An optical measuring device for measuring a surface contour of an object, includes a tripod on which a camera platform is mounted, wherein on the camera platform at least two photo cameras are arranged for imaging the object comprising marking elements, and the at least two photo cameras are arranged on the camera platform in such a manner that imaging the object can be carried out from two different perspectives, wherein between the camera platform and the tripod a displacement device for the linear displacement of the camera platform in three directions that are independent of each other is arranged.