Restricted area automated security system and method
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.
1. 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 direction of movement of an entity within the area to be monitored based on a sequence in which breaks in the detection zones of the light shields occur,
the controller to trigger a security action if the direction of movement is disallowed,
the controller not to trigger a security action if a direction of secondary movement of the entity is opposite a direction of primary movement of the entity that is allowed.
2. The security system of claim 1 , the plurality of laser scanners to establish planar light shields each including at least one planar detection zone.
3. The security system of claim 1 , the plurality of laser scanners to create a three dimensional matrix of two dimensional detection zones.
4. The security system of claim 1 , the plurality of laser scanners to be mounted above the area to be monitored.
5. The security system of claim 1 , the area to be monitored comprising an egress area from a secured area to an unsecured area.
6. The security system of claim 1 , the light shield of at least one of the plurality of laser scanners to be oriented at a non-orthogonal angle to the area to be monitored.
7. The security system of claim 1 , the light shields of a number of the plurality of laser sensors to be oriented substantially parallel with each other.
8. The security system of claim 1 , the light shields of a first number of the plurality of laser scanners to be oriented substantially parallel with each other at a first non-orthogonal angle and the light shields of a second number of the plurality of laser scanners to be oriented substantially parallel with each other at a second non-orthogonal angle.
9. The security system of claim 1 , the plurality of laser scanners to establish light shields each including a plurality of detection zones.
10. 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 direction of movement of an entity within the area to be monitored based on a sequence in which breaks in the detection zones of the light shields occur,
triggering a security action if the direction of movement is disallowed,
not triggering a security action if a direction of secondary movement of the entity is opposite a direction of primary movement of the entity that is allowed.
11. The security method of claim 10 , creating a three dimensional matrix of two dimensional detection zones with the plurality of laser scanners.
12. The security method of claim 10 , orienting the light shields of a number of the plurality of laser sensors substantially parallel with each other.
13. The security method of claim 10 , orienting the light shields of a first number of the plurality of laser scanners substantially parallel with each other at a first non-orthogonal angle and orienting the light shields of a second number of the plurality of laser scanners substantially parallel with each other at a second non-orthogonal angle.