Working with 3DInspect
Page 14
3.4.2
Make Reference Measurements (reflectCONTROL)
In order to perform high precision measurements with the reflectCONTROL sensor, it is possible to ini-
tially make reference measurements using special target objects. By means of the reference measure-
ments it is possible to compensate systematic measurement variations for subsequent measurements as
far as possible. Proceed as follows in order to setup the sensor for performing high precision measure-
ments:
-
Start the referencing mode
-
Position the target object
-
Make a reference measurement
-
Stop the referencing mode
The individual steps are described in detail below:
-
Start the referencing mode:
Use the “Start referencing mode” button (see Fig. 3.4). The “Referencing settings” dialog appears
(see Fig. 3.5).
Fig. 3.5: Dialog „Einstellungen Referenzierung“
You enter the following settings:
Referencing mode: Two modes are available for referencing. The mode depends on the
target object which is used for the reference measurement:
Planar: An optically flat mirror with negligible flatness deviations is used as target ob-
ject
Nonplanar: A mirror with well-known deviations in the µm range is used as target ob-
ject. When using a nonplanar object, it is necessary to specify a description file of the
object (see below).
Referencing target file: When using a nonplanar object, use this field in order to specify the
corresponding description file. If you have already specified the file earlier and if you didn’t
change the referencing object, this step is not necessary. The last loaded file is displayed
below (“Current referencing target”).
If you only want to load the referencing target file without starting the referencing mode, you may
use the “Load target file only” button in order to load the file and close the dialog.
Press the “Start referencing mode” or, respectively, the “Load file and start referencing mode”
button in order to close the dialog.
The referencing mode is active now. The state “Referencing mode active” is displayed in the “Sen-
sor settings”. The “Start referencing mode” button is replaced by the “Stop referencing mode” but-
ton. The “Start measurement” button is replaced by the “Start reference measurement” button.
-
Position the target object:
Open the “Display image data” view (see Chapter
In case of using a planar referencing target you have to position the target so that it is completely
inside the camera images.
The nonplanar target has to be positioned correctly with respect to the sensor. For this, you acti-
vate the “Show measuring field” option. With this, a contour is displayed in the camera images.
You have to position the target so that it is aligned properly to the desired contour (see Fig. 3.7).
Содержание reflectCONTROL RCS
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