Machine safety system with mutual exclusion zone
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United States of America Patent
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-
Aug 3, 2010
Grant Date -
Dec 12, 2002
app pub date -
Jun 8, 2001
filing date -
Jun 8, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
A safety system receives access monitoring information from sensors to detect intrusion into a mutual exclusion zone by either an operator or mechanical equipment. The border of the mutual exclusion zone is segmented into portals that allow both the operator and equipment to access a common work area such as for loading material. When intrusion into one of the portals is detected, intrusion into any other selected portals triggers a safety violation. Access to the mutual exclusion zone via the other portals is prohibited until the interior of the zone is determined to be empty again.
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