System and method for intruder detection
First Claim
1. A system for detecting intruders, comprising:
- a transmitter configured to produce an energy beam;
a first receiver configured to detect energy from said beam; and
a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to receive backscattered energy from said beam when said beam illuminates an intruder.
7 Assignments
0 Petitions
Accused Products
Abstract
Systems and methods for detecting presence and movement of intruders. Various embodiments of an intruder detection system can be based on, for example, a beam-interrupt detector or a thermal imaging device. The beam-interrupt detection based system can provide functionalities such as counting of intruders crossing a given beam. A plurality of such beams at different heights can also allow distinguishing different-sized intruders. The thermal imaging based detection system can provide functionalities such as tracking movement of intruders. A recording can be triggered by detection of intruder movement, thereby improving the efficiency of recording and reviewing information indicative of presence and movement of intruders in a monitored area. In one embodiment, non-intruders can be distinguished from intruders by querying an RFID tag carried by non-intruders. In one embodiment, non-intruders can be distinguished from intruders by facial recognition.
48 Citations
44 Claims
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1. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to receive backscattered energy from said beam when said beam illuminates an intruder.
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2. A system for detecting intruders, comprising:
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a first transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to receive bistatic backscattered energy from said beam when said beam illuminates an intruder. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, further comprising a light sensor, and wherein said system is configured to produce said energy beam during periods of relative darkness.
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13. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said system is configured to produce said energy beam during one or more specified time periods.
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14. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, further comprising a motion detector configured to detect motion from humans, and wherein said system is configured to produce said energy beam during periods when motion is not detected by the motion detector.
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15. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said system is configured to turn off said energy beam when a room light turns on.
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16. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said system is configured to turn off said energy beam when motion is detected by a motion detector.
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17. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to send data to said processor at regular intervals.
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18. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to send data to said processor when a specified intruder detection count is exceeded. - View Dependent Claims (19)
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20. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to send data to said processor when a backscatter from said beam changes.
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21. A system for detecting intruders, comprising:
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a transmitter configured to produce an energy beam; a first receiver configured to detect energy from said beam; and a processor provided to said first receiver, said processor configured to detect a presence of an intruder by determining when said energy beam is at least partially interrupted, said processor further configured to distinguish between intruders and non-intruders by communicating with an RFID tag carried by non-intruders, wherein said first receiver is configured to send data to said processor when interrogated by said processor.
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22. A system for detecting intruders, comprising:
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a camera configured to produce first and second digital images; an RFID reader configured to read RFID tags within a field of view of said camera; and a processor provided to said camera, said processor configured to examine said first and second digital images to detect a movement of one or more intruders by determining movement of an intruder-sized object in said first and second images, said processor further configured to distinguish between intruders and non-intruders by using said RFID reader to read an RFID tag carried by non-intruders. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44)
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Specification