Optics: measuring and testing – Velocity or velocity/height measuring
Reexamination Certificate
2011-08-09
2011-08-09
Nguyen, Sang (Department: 2886)
Optics: measuring and testing
Velocity or velocity/height measuring
C356S028000, C340S679000, C340S693500
Reexamination Certificate
active
07995192
ABSTRACT:
An optoelectronic safety sensor (10) is set forth for the contactless measurement of paths and/or speeds of the safety sensor (10) or of a first object connected in a fixed position to the safety sensor (10) with respect to a second object (12) moved relatively to the first object, which form a potential source of danger, wherein the safety sensor (10) has a light source (20), a light receiver (16) with a plurality of light reception elements and has an evaluation unit (22), with the evaluation unit (22) being configured to determine by means of an optical correlation process and/or by evaluation of the optical flow the path and/or the speed from at least two images of a surface structure (18, 18a, 18b) of the second object (12) taken sequentially by the light receiver (22). In this respect, the evaluation unit (22) is further configured to evaluate the quality of the determined path and/or of the determined speed, and a safety output (24) is provided via which the evaluation signal (22) can output a shutdown signal or brake signal to secure the danger source when a required quality is not reached.
REFERENCES:
patent: 3885873 (1975-05-01), Andermo
patent: 4495589 (1985-01-01), Hirzel
patent: 5568406 (1996-10-01), Gerber
patent: 6023335 (2000-02-01), Wustefeld
patent: 6297844 (2001-10-01), Schatz et al.
patent: 6452535 (2002-09-01), Rao et al.
patent: 6778092 (2004-08-01), Braune
patent: 6844537 (2005-01-01), Wilson et al.
patent: 6859145 (2005-02-01), Wilker et al.
patent: 6860350 (2005-03-01), Beuhler et al.
patent: 7116799 (2006-10-01), Wustefeld et al.
patent: 7242462 (2007-07-01), Huang
patent: 2004/0114381 (2004-06-01), Salmeen et al.
patent: 102 26 950 (2003-04-01), None
patent: 102 45 720 (2004-04-01), None
patent: 1 837 586 (2007-09-01), None
Burns Robert T.
Nguyen Sang
Richmond Derek
Sick AG
The Nath Law Group
LandOfFree
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