Back to results
US 9,978,233 B2Granted
Restricted area automated security system and method
AssigneeComtrol Corporation
InventorsNolan Kariniemi, Mark Pikkarainen
Life of this patent
Estimating the term…
Abstract
A security system includes a plurality of laser scanners to establish light shields in an area to be monitored, with each of the light shields including at least one detection zone, and a controller to detect unauthorized entry to the area to be monitored based on a position and timing of breaks in the detection zones of the light shields.
Claims32
A security system, comprising:
- a plurality of laser scanners to establish light shields in an area to be monitored, each of the light shields including at least one detection zone;
- and
- a controller to detect unauthorized entry to the area to be monitored based on a position and timing of breaks in the detection zones of the light shields,
- the controller to determine a sequence in which breaks in the detection zones of the light shields occur in a reverse direction to a direction of movement that is allowed,
- the controller to trigger a security action if the sequence in which breaks in the detection zones of the light shields occur in the reverse direction is in sync with a sequence in which breaks in the detection zones of the light shields occur in a direction of movement that is allowed.
2 more elements
A security system, comprising:
- a plurality of laser scanners to establish light shields in an area to be monitored, each of the light shields including at least one detection zone;
- and
- a controller to detect unauthorized entry to the area to be monitored based on a position and timing of breaks in the detection zones of the light shields,
- with movement of an entity in a disallowed direction during movement of another entity in an allowed direction, the controller to trigger a security action if movement does not occur within a common zone of the light shields in which movement began and in which final movement occurs.
1 more element
A security method, comprising:
- establishing light shields with a plurality of laser scanners in an area to be monitored, each of the light shields including at least one detection zone;
- and
- detecting unauthorized entry to the area to be monitored based on a position and timing of breaks in the detection zones of the light shields,
- determining a sequence in which breaks in the detection zones of the light shields occur in a reverse direction to a direction of movement that is allowed, and
- triggering a security action if the sequence in which breaks in the detection zones of the light shields occur in the reverse direction is in sync with a sequence in which breaks in the detection zones of the light shields occur in a direction of movement that is allowed.
2 more elements
A security method, comprising:
- establishing light shields with a plurality of laser scanners in an area to be monitored, each of the light shields including at least one detection zone;
- and
- detecting unauthorized entry to the area to be monitored based on a position and timing of breaks in the detection zones of the light shields,
- with movement of an entity in a disallowed direction during movement of another entity in an allowed direction, triggering a security action if movement does not occur within a common zone of the light shields in which movement began and in which final movement occurs.
1 more element
Dependencies are inferred from the claim text.