Quick Camera Replacement
In actual production, collisions between the camera and other objects can easily alter its extrinsic parameters. When this occurs, the camera typically needs to be replaced, followed by re-calibration. Alternatively, if replacing the camera is not an option, you can manually set the pick points by jogging the robot. However, both approaches increase workload and downtime.
To resolve this issue, the Quick camera replacement feature is integrated into the “Auto-correct accuracy drift in ETH vision system” tool. The operation workflow is shown below.
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Migrate configuration parameter group: Mount the new camera and quickly import the configuration parameter group of the old camera into the new one to save time on parameter adjustment.
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Update camera configuration: After replacing the camera and updating the configuration parameter group, update the configurations related to the camera in the project.
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Validate image-capturing points: Re-validate the image-capturing points to ensure accurate and reliable drift correction data can be obtained.
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Check program running result: Check whether valid drift correction data is generated after the robot program runs.
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Only cameras of the same model can be quickly replaced. If a different camera model needs to be replaced, please contact technical support for evaluation. |
Migrate Configuration Parameter Group
Before replacing the camera, please migrate the configuration parameter group as required, ensuring the configuration parameter group of the old camera is quickly imported to the new camera, thereby reducing the subsequent camera adjustment time.
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Export the configuration parameter group of the old camera using Mech-Eye Viewer.
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Disconnect the power and remove the old camera.
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Install the new camera, connect the cables, and turn on the power. Ensure that all indicator lights show normal status, then connect to the new camera in Mech-Eye Viewer.
When mounting the new camera, make sure that the mounting height and position of the new camera is the same as that of the old camera.
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Import the configuration parameter group of the old camera using Mech-Eye Viewer.
After completing the above steps, click Next to proceed with updating the camera configuration.
Update Camera Configuration
After migrating the configuration parameter group, please update the configurations related to the camera in the project.
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Connect to a new camera. Click Select camera to select and connect to the new camera.
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Select the serial number of the old camera. Select the serial number of the old camera in the drop-down list.
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Click the Update configuration button to update the camera configuration.
Validate Image-capturing Points
After replacing the camera, the image-capturing points where the calibration sphere images are captured should be re-validated to obtain accurate and reliable drift correction data.
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Since the new camera is in a cold-start state, its intrinsic parameter accuracy may change due to temperature increases during image acquisition. Therefore, the camera should be warmed up in advance. Please refer to Warm Up for detailed instructions. |
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Move the robot to the flange pose corresponding to the image-capturing point.
Please ensure that no collisions occur during the robot’s movement to this pose. It is recommended to jog the robot to the target pose at a low speed and observe whether there will be any collisions.
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Click the Adjust ROI button to adjust the ROI of the calibration sphere.
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Click the Capture image to validate button to calculate the repeatability of the calibration sphere poses at the image-capturing point.
Repeat the above steps until all image-capturing points are validated, and click Save.
Check Program Running Result
After validating the image-capturing points, you should check the program running result, ensuring valid drift correction data is generated after the robot program runs.
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Run the Master-Control program, as shown below.
Run the auto-correction program to collect the calibration sphere poses, facilitating subsequent correction of the accuracy drift in the vision system.
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Check the program running result.
After running the robot program, click the Start check button to check the running result of the robot program.
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If the check passes, it indicates that valid drift correction data has been generated after running the auto-correction program. Then you can click the Finish button to proceed with the quick camera replacement.
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If the check fails, it indicates that the robot auto-correction program did not generate valid drift correction data. In this case, it is recommended to rerun the robot auto-correction program to capture the calibration sphere poses.
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