ifm Vision Assistant O3M
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10.6 Soiling detection
The "Soiling detection" recognises soiling of the device's front screen . A soiled front screen leads to
incorrect measuring results . A dedicated LED regularly checks the permeability of the front screen and
detects soiling .
Typical types of soiling are:
●
Ice
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Dust
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Humidity/fog/water
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Oil/grease
Soiling of the front screen of the illumination unit is not recognised .
The current degree of soiling is indicated as a percentage value in the status bar in the bottom left corner .
In the status bar, "Function available" is displayed if no soiling is detected:
The degree of soiling (warning value) is provided as a percentage value via CAN and can be evaluated in
applications .
Test the ideal filter setting under difficult conditions:
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strong sunlight
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wet surfaces
10.6.1 Setting the sensitivity
Depending on the setting, the filter works with low, medium or high sensitivity .
The following table shows the sensitivity with which soiling is recognised most reliably .
Dirt
Low sensitivity
Medium sensitivity
High sensitivity
Ice
recognised
recognised
recognised
Dead leaves
recognised
recognised
recognised
Dust
partially recognised
recognised
recognised
Humidity/fog/water
not recognised
partially recognised
recognised
Dirt
not recognised
not recognised
recognised
The setting "high sensitivity" detects smallest degrees of soiling and may lead to false alerts .
Highly reflective objects close to the device (< 0 .5 m) are detected as soiling .
