Technical Documentation
opti-check
v2.8.2-K11
13/332
ipf electronic GmbH
Lüdenscheid, Germany
5 Mode of operation
In contrast with conventional photoelectric sensors, this sensor operates with digital images and is capable of
conducting several feature checks with parameters set by the software.
The strength of the device lies in the detection of contours. With the procedure, differences in brightness can
be optimally tolerated, as contours are usually independent of the absolute brightness (e.g. variations in
illumination).
Because a test object can normally be definitively described by its relevant contours, the device provides
powerful tools to check their presence, position, completeness or colour. The high quality of the method
ensures that a reliable result is always achieved even with a rapid sequence of objects.
The diagram shows the schematic mode of operation with the corresponding parts of the sensor.
Here, each inspection task ("
job
") is divided into several
feature checks
. Each feature check executes one
task and returns an associated pass/fail result or the associated measured values. For this purpose, a field of
view must be defined that is either circular, an arc, rectangular or polygonal. The contours can be given via
search arrows for geometrical feature checks.
Then you can link the results from the feature checks into one result and output it via a digital interface. With
the device, the stored jobs can be selected via external switching inputs.
