Patent ID: 6265725
Filing Date: 2001-07-24
Classification: F16P,G01S

Abstract:
An optoelectronic device for detecting objects in a monitoring range with a distance sensor, comprising:a transmitter for transmitting light rays;a deflection unit on which the transmitted light rays are reflected for periodically sweeping the transmitted rays over the monitoring range;a receiver for receiving light rays;an evaluation unit for evaluating the signals received at the receiver, the evaluation unit including means for storing dimensions of different monitoring ranges and several inputs each of which is operatively associated with a respective one of the stored dimensions of the different monitoring ranges, the evaluation unit further including a test output for emitting a test signal having a predetermined signal value;several feed lines each of which is connected to a respective one of the several inputs; andseveral switches each of which is connected via a respective one of the feed lines to a respective one of the inputs of the evaluation unit, wherein upon activation of one of the switches a predetermined signal value is transmitted to the respective input for activating the input thereby activating the respective stored monitoring range so that objects in the activated monitoring range are detected; andwherein the test output of the evaluation unit is coupled to each of the feed lines and for test purposes, the test signal is transmitted via the test output to each of the feed lines, whereby an error-free operation is signified if the predetermined signal value of the test signal is present at the respective inputs of the evaluation unit.