Robot Vision Sensor Calibration Visualization
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Solution Overview
Problem
Conventional techniques face difficulties in identifying and correcting errors in calibration data for vision sensors in robot systems, leading to inaccurate calibration and potential operational issues.
Innovation Solution
A robot system display device that acquires and displays calibration data, shape information, and arrangement information of components, including vision sensors and target jigs, to visually represent the relationship between the robot and vision sensor coordinate systems, allowing for the identification of errors in calibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If calibration data is obtained using conventional techniques, then the robot system can perform operation control, but errors in calibration data cannot be identified
Solution Approach 1:
The patent creates a visual copy representation of the robot system with the vision sensor and target jig displayed in a graphical user interface. This visual copy allows operators to see the spatial relationship between components based on calibration data, making it possible to detect errors by comparing the displayed positions with expected physical arrangements.
Solution Approach 2:
The patent introduces a visual display interface as an intermediary between the calibration data and the operator. This intermediary translates abstract calibration parameters into visual representations, enabling error detection without requiring operators to directly analyze complex calibration calculations.
2Loss of information
If the vision sensor position is displayed based on calibration data, then the arrangement relationship can be visualized, but incorrect calibration data leads to incorrect display positions
Solution Approach 1:
The patent provides visual feedback to operators showing where the vision sensor and target jig are positioned according to calibration data. This feedback mechanism allows operators to immediately see if the calibration positions make sense physically, enabling them to detect and correct errors in the calibration process.
Solution Approach 2:
The patent displays the calculated positions before final calibration is completed, allowing operators to check for obvious errors in advance. This preliminary visual check prevents incorrect calibration data from being used without detection.
3Ease of manufacture
If conventional calibration techniques are used, then the calibration process can be completed, but the complexity of the system increases without error checking capability
Solution Approach 1:
The patent adds a visual display layer that copies the calibration data into a graphical representation. This adds complexity only in the form of visualization, not in the calibration process itself, making the system more complex only where needed for error detection.
Data Source
AI summary
A robot system display device is provided for graphically displaying components of a robot system which carries out a desirable process by measuring a position of a target object with a vision sensor. The robot system display device acquires an arrangement of the vision sensor relative to other components of the robot system based on calibration data for the vision sensor and pre-stored shape information of the vision sensor. The robot system display device graphically displays the vision sensor in a virtual space based on the relative arrangement.