Leading Edge Detection for Wooden Boards Via Reflex Sensors with Background Suppression

In the wood industry, boards must be transported between the process steps on feeders. In order to reliably detect the leading edges of the wooden boards along the entire width, several reflex sensors with background suppression are installed along the transport line. Dark boards or boards with knotholes are reliably detected. The sensors also detect increasing contamination from dust or sawdust. Thanks to the contamination output, cleaning of the lenses can be triggered via an early warning signal without stopping production.