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公开(公告)号：US09810626B2
公开(公告)日：2017-11-07
申请号：US15092991
申请日：2016-04-07
Applicant: SICK AG
Inventor： Joachim Kramer , Michael Engler , Markus Hammes , Christof J. Meyer
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).
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公开(公告)号：US09476828B2
公开(公告)日：2016-10-25
申请号：US13847833
申请日：2013-03-20
Applicant: SICK AG
Inventor： Joachim Kramer
CPC classification number: G01N21/59 , G01S7/4817 , G01S7/497 , G01S17/42 , G01S2007/4975 , G02B26/10
Abstract: An optoelectronic sensor (10) has a circumferential front screen (42) comprising a curvature both in a circumferential direction and in a transverse height, thus focusing light reflected at the inside of the front screen (42). Test light passes from a test light transmitter (50a-f) through the front screen (42) to a reflector (52a-f) and subsequently onto a test light receiver (56a-b). A decreasing light transmissivity of the front screen (42) is detected based on a decrease of a signal generated by the test light in the test light receiver (56a-b). The test light receiver (56a-b) is arranged on a same side of the front screen (42) as the reflector (52a-f) such that the test light path (54a-f) leads from the reflector (52a-f) via reflection on the inside of the front screen (42) to the test light receiver (56a-b).
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公开(公告)号：US09477007B2
公开(公告)日：2016-10-25
申请号：US14055924
申请日：2013-10-17
Applicant: SICK AG
Inventor： Magnus Albert , Michael Engler , Joachim Kramer
Abstract: A laser scanner, in particular a safety laser scanner, in accordance with the operating principle of the time of flight process, comprising a light transmission unit having at least one light transmitter for transmitting a polarized transmitted light beam into a monitored zone; a light reception unit having at least one light receiver for detecting the polarization component of the light reflected in the monitored zone being orthogonal to the polarization direction of the transmitted light beam, and/or the polarization component of the light reflected in the monitored zone being parallel to the polarization direction of the transmitted light beam, and for generating a received signal corresponding to the detected orthogonal polarization component and/or the detected parallel polarization component; and an evaluation unit configured to evaluate the time development of the detected orthogonal polarization component and/or of the detected parallel polarization component.
Abstract translation: 根据飞行过程的操作原理的激光扫描器，特别是安全激光扫描仪，包括具有至少一个光发射器的光传输单元，所述光发射器用于将偏振的透射光束传输到被监测的区域; 光接收单元，具有至少一个光接收器，用于检测在所监视的区域中反射的光的偏振分量正交于透射光束的偏振方向，和/或在监视区域中反射的光的偏振分量为 平行于透射光束的偏振方向，并且用于产生对应于检测到的正交偏振分量和/或检测到的平行偏振分量的接收信号; 以及评估单元，被配置为评估检测到的正交偏振分量和/或检测到的平行偏振分量的时间变化。
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