Method and system for guarding a person in a building
First Claim
1. A method for guarding one or more persons inside a building, the method comprisingdirecting, by means of at least two motion detectors fastened to the building, into a room being monitored at least two non-superimposed beams, at least one of which extends in a width of at most dozens of centimeters across the room being monitored;
- detecting the movement of each person at least at two separate locations defined by the beams;
observing the movement of each person by means of the detections in a predefined time without raising an alarm, if the detected locations of the person form a line of predefined consecutive locations from a predefined initial location to a predefined destination location;
raising an alarm if this is not the case; and
raising an alarm if the person being monitored is not detected twice successively at the destination location.
1 Assignment
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Accused Products
Abstract
The movement of persons is indicated at least at two predefined locations in a building with motion detectors intended for monitoring each location and fastened to the building. By means of the detections, the movement of each person is detected from a predefined initial location to a predefined destination location in a predefined time without raising an alarm if the detected locations of the person form a line of predefined consecutive locations. Otherwise, an alarm is raised.
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Citations
10 Claims
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1. A method for guarding one or more persons inside a building, the method comprising
directing, by means of at least two motion detectors fastened to the building, into a room being monitored at least two non-superimposed beams, at least one of which extends in a width of at most dozens of centimeters across the room being monitored; -
detecting the movement of each person at least at two separate locations defined by the beams; observing the movement of each person by means of the detections in a predefined time without raising an alarm, if the detected locations of the person form a line of predefined consecutive locations from a predefined initial location to a predefined destination location; raising an alarm if this is not the case; and raising an alarm if the person being monitored is not detected twice successively at the destination location. - View Dependent Claims (2, 3, 4, 5)
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6. A system for guarding one or more persons inside a building, wherein the system comprising
at least two motion detectors and a control centre; -
each motion detector being fastened to the building and configured to direct into a room being monitored at least two non-superimposed beams in such a manner that at least one of the motion detectors is configured to extend its beam in a width of at most dozens of centimeters across the room being monitored; each motion detector being configured to indicate the movement of each person at least at two separate locations defined by the beams; and the control centre being configured to observe the movement of each person by means of the detections in a predefined time without raising an alarm, if the detected locations of the person form a line of predefined consecutive locations from a predefined initial location to a predefined destination location, the control centre being configured to raise an alarm if this is not the case, and the control centre being configured to raise an alarm if the person being monitored is not detected twice successively at the destination location. - View Dependent Claims (7, 8, 9, 10)
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Specification