Combine Calibrated Groups
Navigate to the toolbar of Mech-MSR’s home interface, click the Multiple Laser Profiler Calibration button and then click the Preparations completed button in the pop-up window. Then, select the Combine calibrated groups option and click the Start calibration button to enter the window of Combine calibrated groups of laser profilers.
| Before combination, ensure that multiple valid calibrated groups are available. |
Combination Workflow
Follow the steps below:
-
Select calibrated groups according to the actual needs (3 groups at most) from the list of Calibrated groups.
-
Ensure that at least one laser profiler is shared across different groups, with the shared laser profiler maintaining the same direction and parameters in all relevant groups.
-
Ensure that the trigger settings, resolution settings, and the Region of Interest (ROI) setting are identical for all laser profilers.
-
-
Select the primary laser profiler in the drop-down list in the lower-right corner.
-
Click the Save button to set the name and storage path in the pop-up window and finish the combination.
Combination Examples
| Multiple choices are often available in combining calibrated groups. The following only presents the combination approach. |
Scenario 1: Four Side-by-Side Laser Profilers
In scenario 1, four laser profilers are arranged side by side for a wider FOV.
As illustrated in the figure below, the four laser profilers are marked as A, B, C, and D. The following methods can be used for calibration:
-
Calibrate a single group: The side-by-side layout supports the calibration of four laser profilers. For calibration, you need to prepare a calibration target that includes four parallel frustums.
-
Combine calibrated groups: Divides the four laser profilers into different groups for calibration and then combines the calibrated groups. For calibration, you need to prepare a calibration target that includes at least two parallel frustums.
If you already have a calibration target that includes two instead of four parallel frustums, you can combine single groups so that you do not have to prepare a new calibration target.
Possible methods for combining single groups include AB + BC + CD, AC + BD + BC, AD + BC + AB, and AD + BC + CD. Of all the methods, AB + BC + CD is the optimal choice since it requires only one calibration target that includes two parallel frustums.
- Tips for combination
-
-
Select a combination method according to available calibration targets and the machining complexity of the calibration target, so as to minimize the workload involved in designing and machining calibration targets.
-
The combination of AB + CD alone is insufficient to determine the positional relationship between A, B, C, and D. It is essential to ensure that the selected calibrated groups can connect A, B, C, and D into a whole. Therefore, each group should share at least one laser profiler with another group.
-
Scenario 2: Two Groups of Laser Profilers in an Opposite Layout
In scenario 2, two groups of laser profilers are placed in an opposite layout for thickness measurement.
As illustrated in the figure below, the four laser profilers are marked as A, B, C, and D. You can use the following methods for combination:
-
2 side-by-side groups + 1 opposite group: AB + CD + AC/BD
-
2 opposite groups + 1 side-by-side group: AC + BD + AB/CD
Both methods have the same requirements for the calibration target, and either can be used for calibration. However, due to the overlapping FOVs of laser profilers in the side-by-side layout, the AB + CD + AC/BD combination is recommended for more accurate calibration results.
- Tips for combination
-
Laser profilers with overlapping FOVs should be given priority when forming groups for calibration.