Method for detecting objects and light barrier grid

Details Method for detecting objects and light barrier grid Method for detecting objects and light barrier grid

2005-10-25

2005-10-25

Rosenberger, Richard A. (Department: 2877)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C356S627000, C356S634000, C209S586000

Reexamination Certificate

active

06958465

ABSTRACT:
A method for monitoring two or more movable objects in a monitoring region. A substantially horizontal light barrier grid having a plurality of parallel light barriers monitors the region. To permit a plurality of objects to simultaneously move in the monitored region without deactivating the monitoring function of the system, the system controls an entry area for the objects, the size of the objects as well as the distance between the objects to ascertain that predetermined criteria therefor are met. If one or more of these criteria is not met, a control signal is generated which can be used, for example, to deactivate the machinery and/or prevent access to the monitored region.

REFERENCES:
patent: 3327850 (1967-06-01), Simmons
patent: 4384201 (1983-05-01), Carroll et al.
patent: 5281809 (1994-01-01), Anderson et al.
patent: 5768327 (1998-06-01), Pinto et al.
patent: 6737970 (2004-05-01), Wuestefeld et al.
patent: 2002/0047633 (2002-04-01), Jurs et al.
patent: 91 14 867 (1992-03-01), None
patent: 42 01 116 (1993-07-01), None
patent: 44 22 497 (1996-01-01), None
patent: 44 22 497 (1996-01-01), None
patent: 44 24 537 (1996-01-01), None
patent: 196 04 900 (1997-08-01), None
patent: 201 03 828 (2001-07-01), None
patent: 100 33 077 (2002-01-01), None
patent: 1 089 030 (2001-04-01), None

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