Gocator Line Profile Sensors: User Manual
Gocator Web Interface • 105
Setting Description
Spot Threshold
The minimum increase in intensity level between neighbouring pixels for a pixel to be
considered the start of a potential spot.
This setting is important for filtering false profile spots generated by sunlight reflection.
Spot Width Max
The maximum number of pixels a spot is allowed to span.
This setting can be used to filter out data caused by background light if the unwanted
light is wider than the laser and does not merge into the laser itself. A lower Spot
Width Max setting reduces the chance of false detection, but limits the ability to detect
features/surfaces that elongate the spot.
Spot Selection
Determines the spot selection method.
Best selects the strongest spot in a given column on the imager.
Top selects the topmost spot or the one farthest to the left on the imager, and Bottom
selects the bottommost spot or the one farthest to the right on the imager. These
options can be useful in applications where there are reflections, flying sparks or
smoke that are always on one side of the laser.
None performs no spot filtering. If multiple spots are detected in an imager column,
they are left as is. This option is only available if Uniform Spacing is disabled in the
Scan Mode panel on the Scan page; for more information on uniform spacing, see
Uniform Spacing (Data Resampling) on page 53.
Analog
Analog camera gain can be used when the application is severely exposure limited, yet
dynamic range is not a critical factor.
Digital
Digital camera gain can be used when the application is severely exposure limited, yet
dynamic range is not a critical factor.
Sensitivity
Controls the exposure that dynamic exposure converges to. The lower the value, the
lower the exposure Gocator will settle on.
The trade-off is between the number of exposure spots and the possibility of over-
exposing.
Threshold
The minimum number of spots for dynamic exposure to consider the spot valid. If the
number of spots is below this threshold, the algorithm will walk over the allowed
exposure range slowly to find the correct exposure.
To configure material:
1. Go to the Scan page.
2. Expand the Sensor panel by clicking on the panel header or the button.
3. Click the button corresponding to the sensor you want to configure.
The button is labeled Top, Bottom, Top-Left, or Top-Right, depending on the system.
Materials can be configured separately for each sensor.
4. Click on the Materials tab.
5. Choose a material in the Materials drop-down or choose Custom to manually configure settings.
See the table above for the customizable settings.
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