Patent US5980123A successfully refreshed from Google Patents.
US5980123A
Expired / Lapsed
US
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System and method for detecting an intruder
Assignee: Rafael Advanced Defense Systems Ltd
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Filing: 1997-01-08
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Granted: 1999-11-09
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Expires: 2017-01-08
Abstract
Abstract A system and method for detecting an intruder into an area to be guarded is provided. The system includes a plurality of detection units, each of the plurality of detection units having at least one infrared sensor and having a first field of view external to and directed generally along the perimeter, and located within the area to be guarded. The infrared sensor may be a passive sensor. The detection units include a camera for recording intrusion within a second field of view and a controller. The controller is responsive to output of the infrared sensor, for determining when an intruder has entered the first field of view, whereupon an operator activates the camera.
Inventors
- 👤 Nahy Heifler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:15
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/18; G08B13/189; G08B13/194; G08B13/196; G08B13/19695; G08B13/19602; G08B13/19608; G08B13/19639; G08B13/19641; G08B13/19652
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
125 words
A system for detecting at least one intruder proximate to an area to be guarded, said area having a perimeter, the system comprising: a. a plurality of detection units, each of which includes at least one passive infra-red sensor having a first field of view external to and directed generally along said perimeter, said plurality of detection units, being positioned within the area to be guarded, creating a pre-emptive detection zone external to said perimeter for detecting said at least one intruder before said at least one intruder reaches said perimeter; and b. at least one camera for viewing and recording said at least one intruder within a second field of view, said second field of view being wider than said first field of view.
Claim 2
Independent Claim
125 words
A system for detecting at least one intruder proximate to an area to be guarded, said area having a perimeter, the system comprising: a. a plurality of detection units, each of which includes at least one passive infra-red sensor having a first field of view external to and directed generally along said perimeter, said plurality of detection units, being positioned within the area to be guarded, creating a pre-emptive detection zone external to said perimeter for detecting said at least one intruder before said at least one intruder reaches said perimeter; and b. at least one camera for viewing and recording said at least one intruder within a second field of view, said second field of view being wider than said first field of view.
Claim 3
Dependent Claim
55 words
A system according to claim 1 and further comprising: a. a controller, responsive to output of said at least one passive infra-red sensor, for communicating with a central control and command unit when said at least one intruder has entered said first field of view; and b. an operator activating said at least one camera.
Claim 4
Dependent Claim
32 words
A system according to claim 1, and wherein each of said plurality of detection units additionally comprises a spotlight for illuminating movement within said second field of view during poor light conditions.
Claim 5
Dependent Claim
44 words
A system according to claim 2 wherein each of said plurality of detection units additionally comprises a spotlight, for illuminating movement within said second field of view during poor light conditions, said spotlight is responsive to the activation of said at least one camera.
Claim 6
Dependent Claim
18 words
A system according to claim 1 wherein said first field of view is within a range of 10°±3°.
Claim 7
Dependent Claim
28 words
A system according to claim 1 wherein said second field of view is wider than said first field of view by an angle within a range of 2°-22°.
Claim 8
Dependent Claim
49 words
A system according to claim 1 and wherein said first field of view of a first one of said plurality of detection units overlaps said first field of view of a second one of said plurality of detection units, said first and second detection units being adjacent detection units.
Claim 9
Dependent Claim
24 words
A system according to claim 2 and wherein each of said at least one cameras is activated by said central control and command unit.
Claim 10
Dependent Claim
108 words
A system according to claim 8 and wherein said central control and command unit comprises: a. a control and command system coupled to a plurality of said at least one camera; b. a digital communication channel coupled to said control and command system, for controlling the plurality of said cameras; c. a plurality of video recorders, each of which is coupled to said control and command system, each video recorder recording the output from one of the respective cameras; and d. a plurality of video monitors, each of which is coupled to said control and command system, each monitor displaying the output from one of the respective cameras.
Claim 11
Dependent Claim
28 words
A system according to claim 9 and wherein said central control and command unit further comprises a video motion detection unit coupled to said control and command system.
Claim 12
Dependent Claim
32 words
A system according to claim 10 and wherein said video motion unit comprises a plurality of channels, each channel is coupled to a corresponding video output from one of the respective cameras.
Claim 13
Independent Claim
141 words
A method for detecting at least one intruder before said at least one intruder reaches the perimeter of an area to be guarded, the method comprising of: a. placing a plurality of detection units within said area to be guarded, each of said plurality of detection units including at least one passive infra-red sensor having a first field of view external to and directed generally along said perimeter at a pre-determined distance apart, the plurality of detection units thereby creating a pre-emptive detection zone external to said perimeter for detecting said at least one intruder; b. communicating an intrusion to a central control and command unit; and c. activating a camera for viewing and recording said at least one intruder, said camera having a second field of view; said second field of view being wider than said first field of view.
Claim 14
Independent Claim
141 words
A method for detecting at least one intruder before said at least one intruder reaches the perimeter of an area to be guarded, the method comprising of: a. placing a plurality of detection units within said area to be guarded, each of said plurality of detection units including at least one passive infra-red sensor having a first field of view external to and directed generally along said perimeter at a pre-determined distance apart, the plurality of detection units thereby creating a pre-emptive detection zone external to said perimeter for detecting said at least one intruder; b. communicating an intrusion to a central control and command unit; and c. activating a camera for viewing and recording said at least one intruder, said camera having a second field of view; said second field of view being wider than said first field of view.
Claim 15
Dependent Claim
20 words
A method according to claim 12 wherein said activating said camera is controlled by said central control and command unit.
Claim 16
Dependent Claim
21 words
A method according to claim 12 and further comprising illuminating movement within said second field of view during poor light conditions.
Claim 17
Dependent Claim
17 words
A method according to claim 14 wherein said illuminating is responsive to said activating of said camera.
Claim 18
Dependent Claim
32 words
A method according to claim 12 and wherein said activating said camera when an intruder has entered said first field of view, activates a camera of at least one other detection unit.
Claim 19
Dependent Claim
30 words
A method according to claim 13 further comprising: a. transmitting an identifier for said camera to a central control unit; and b. transmitting said recording to said central control unit.
Claim 20
Dependent Claim
13 words
A method according to claim 12 and further comprising displaying said recording images.
Claim 21
Dependent Claim
13 words
A method according to claim 12 and further comprising recognizing said activated camera.
Claim 22
Dependent Claim
13 words
A method according to claim 12 and further comprising tracking said detected intruder.
Claim 23
Dependent Claim
14 words
A method according to claim 12 and further comprising tracking a plurality of intrusions.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-11-08 | 2003-05-10 | 2003-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-11-08 | 2007-05-10 | 2007-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-11-08 | 2011-05-10 | 2011-11-09 | $7700.00 | Window Closed / Lapsed |