Package Detection in Beverage Return Machines with Retro-Reflex Sensor for Transparent Objects
Automatic return machines have a central, circular opening for receiving containers. In order to link with subsequent processes (e.g. belt start-up, deposit logo check), a multi-beam retro-reflex sensor for transparent objects is located directly behind the drop-in. This ensures that beverage packaging made of PET, glass, aluminum or sheet metal is reliably detected. Thanks to the four red light beams, even small containers without blind spots are detected. The dynamic readjustment of the switching threshold enables reliable switching, even with increasing contamination of the sensor or reflector.
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