noise in the range image, while a low threshold value makes it possible to detect
weak laser peaks.
5.
Select laser line acquisition criteria in the
Laser peak
list:
°
Strongest
locates the point with the highest intensity.
°
Top Most
and
Bottom Most
locate the highest or lowest point with an intensity
higher than the value set by the
Laser threshold
parameter. See
.
Figure 22: Laser line acquisition criteria.
6.
Repeat the procedure if necessary.
7.5.3.1
Laser line exposure time
The optimal exposure time yields a gray line in the 2D sensor image representation. A
slightly brighter line is preferable to a slightly darker line. A solid white laser line indi‐
cates a too long exposure time and will result in an overexposed image. See the images
below for examples of 2D sensor images and Live 3D images depicting short exposure
time, normal exposure time, and long exposure time (from left to right).
View
Short exposure time
Normal exposure time Long exposure time
Sensor view
Live 3D view
7.5.4
Configuring the trigger settings
The
Image Trigger
section is used to determine when image acquisition starts.
b
Set the
Image trigger
parameter to
None (Continuous)
to acquire images continuously.
b
Select
Object trigger
to define a plane on a certain height. The image acquisition
starts when an object is above the specified plane.
b
Select
Command Channel
to trigger the image acquisition from the command chan‐
nel.
b
Set the parameter to
Trigger on I/O 3
to trigger the TriSpector1000 by digital I/O via
a photoelectric switch or a PLC. The image acquisition can be delayed by time (ms)
or distance (mm) from the signal input.
The TriSpector1000 triggers on a rising edge. The trigger pulse must be at least 50
μs. The TriSpector1000 ignores succeeding pulses during image acquisition.
b
Click the
Force trigger
button above the image area to start an image acquisition. If
an acquisition is already ongoing, it will be interrupted and re-started.
OPERATION
7
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O P E R A T I N G I N S T R U C T I O N S | TriSpector1000
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Subject to change without notice
