Patent ID: 8324557

Claim:
An optoelectronic sensor for the detection of pallets ( 32 ) having a transmitter ( 12 ) and an optical transmission system ( 24 ) for the transmission of transmitted light ( 22 ), a receiver ( 14 ) for the reception of the transmitted light ( 28 ) and for the provision of an electronic received signal (I), an evaluation unit ( 16 ) for the recording of the received signal (I) and for the outputting of a detection signal when an opaque object ( 36 ) to be detected in the form of a pallet base ( 34 ) enters into the transmitted light beam ( 22 ), whereby the optical transmission system ( 24 ) is constructed so that the transmitted light profile ( 22 ) has the form of a line and defines a plane detection zone between the transmitter and the receiver or reflector ( 26 ) across the pallet base ( 34 ) and is detected, with a free beam path, via a reflector ( 26 ) or directly by the receiver ( 14 ); and whereby the evaluation unit ( 16 ) has means for the determination and adjustment of a recognition threshold value (S); and whereby the detection signal can be output when the received signal (I) is below the detection threshold value (S) if the pallet base ( 34 ) intercepts only a part of the transmitted light ( 22 ) having the line form.