Optoelectronic sensor for detecting object edges

摘要

#CMT# #/CMT# The sensor has a light transmission device comprising light transmitters (23) for generating a collimated or focused transmission light beam (31). Light receivers (25) receive a light spot generated by the transmission light beam on an object (11), and are arranged on opposite sides of the light transmission device. A control- and evaluation device (39) compares two receiving intensities of two images of the light spot with each other, evaluates a result of the comparison and detects an edge (41) of the object. #CMT# : #/CMT# An independent claim is also included for a method for detecting edges of moving objects. #CMT#USE : #/CMT# Optoelectronic sensor for detecting edges of moving objects e.g. packages such as beverage cartons, that are transported along a conveyor belt for further processing i.e. application of straw. #CMT#ADVANTAGE : #/CMT# The control- and evaluation device compares the two receiving intensities of the two images of the light spots with each other, evaluates the result of the comparison and detects the edge of the object, thus enabling edge detection of the moving objects in a robust, space-saving and cost-effective manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a top view of an optoelectronic sensor. 11 : Object 23 : Light transmitters 25 : Light receivers 31 : Transmission light beam 39 : Control- and evaluation device 41 : Edge of object.