Patent ID: 8730457

Claim:
A sensor arrangement ( 100 , 200 , 300 ) for object recognition in a monitored zone ( 104 , 204 ), the sensor arrangement including a first distance-measuring optoelectronic sensor ( 100 ) having a field of view ( 104 ), a second distance-measuring optoelectronic sensor ( 200 ) having a field of view ( 204 ), the fields of view ( 104 , 204 ) of the first and second sensors ( 100 , 200 ) having a common overlap region, and the sensor arrangement also including a common control unit ( 300 ) which is formed for determining a position ( 408 ) of a calibration target ( 400 ) in the overlap region with respect to the first sensor ( 100 ) and to the second sensor ( 200 ) to determine a transformation instruction between a first coordinate system of the first sensor ( 100 ) and a second coordinate system of the second sensor ( 200 ) in a registration mode, so that measured points ( 402 ) of the sensors ( 100 , 200 ) can be combined in a common global coordinate system, wherein the common control unit ( 300 ) is designed to determine in the registration mode a first position ( 408 a 1 , 408 b 1 ) of the calibration target ( 400 ) and a second position ( 408 a 2 , 408 b 2 ) of the calibration target ( 400 ) different from the first position ( 408 a 1 , 408 b 1 ) in the overlap region with respect to the first sensor ( 100 ) and with respect to the second sensor ( 200 ) and to determine the transformation instruction as that transformation instruction which causes a connection line ( 410 a ) from the first position ( 408 a 1 ) to the second position ( 408 a 2 ) with respect to the first coordinate system to cover a connection line ( 410 b ) from the first position ( 408 b 1 ) to the second position ( 408 b 2 ) with respect to the second coordinate system, and wherein the common control unit ( 300 ) is designed to determine the position ( 408 ) of the calibration target ( 400 ) from a bundle ( 406 ) of a plurality of lines ( 404 ) which are determined in respective different poses of the calibration target ( 400 ).