公开(公告)号：US20160299072A1

公开(公告)日：2016-10-13

申请号：US15092991

申请日：2016-04-07

Applicant: SICK AG

Inventor： Joachim KRAMER ,  Michael ENGLER ,  Markus HAMMES ,  Christoph J MEYER

IPC: G01N21/59 ,  G01D5/30 ,  G01M11/00

CPC classification number: G01N21/59 ,  G01D5/30 ,  G01M11/00 ,  G01N2201/06113 ,  G01N2201/1053 ,  G01S7/4817 ,  G01S7/497 ,  G01S17/42 ,  G01S2007/4975

Abstract: An optoelectronic sensor (10) for detecting objects in a monitored zone (20) is provided which has the following: a front screen (38); a light transmitter (12) for transmitting a light beam (16); a movable deflection unit (18) for the periodic sampling of the monitored zone (20) by the light beam (16); a light receiver (26) for generating a received signal from the light beam (22) remitted by the objects; at least one test light transmitter (42); at least one test light transmitter (42), at least one test light receiver (44) and at least one test light reflector (48) which span a test light path (46a-b) through the front screen (38); and an evaluation unit (32) which is configured to acquire pieces of information on the objects in the monitored zone (20) from the received signal and to recognize an impaired light permeability of the front screen (38) from a test light signal which the test light receiver (44) generates from test light which is transmitted from the test light transmitter (42) and which is reflected at the test light reflector (48). In this respect, the test light reflector (48) is arranged such that it moves along with the deflection unit (18).

Abstract translation: 提供了一种用于检测被监视区域（20）中的物体的光电传感器（10），其具有以下内容：前屏幕（38）; 用于发射光束（16）的光发射器（12）; 用于通过所述光束（16）周期性地对所监视的区域（20）采样的可移动偏转单元（18）; 光接收器（26），用于从由所述物体导出的所述光束（22）产生接收信号; 至少一个测试光发射器（42）; 至少一个测试光发射器（42），至少一个测试光接收器（44）和穿过前屏幕（38）跨越测试光路径（46a-b）的至少一个测试光反射器（48）; 以及评估单元（32），被配置为从接收到的信号中获取所监视的区域（20）中的对象的信息，并且从测试光信号中识别出前屏幕（38）的受损透光度， 测试光接收器（44）从测试光发射器（42）发射并从测试光反射器（48）反射的测试光产生。 在这方面，测试光反射器（48）被布置成使其与偏转单元（18）一起移动。