Chemical, biological, radiological, and nuclear weapon detection system comprising array of spatially-disparate sensors
First Claim
1. A system comprising:
- K spatially-disparate hazardous material detection stations, wherein each of said K hazardous material detection stations issues a first alarm when the amount of a first hazardous material reaches a first threshold; and
a first system-wide alarm that is triggered when N of M of said neighboring hazardous material detection stations issues said first alarm;
wherein N, M, and K are positive integers and 1<
N≦
M≦
K.
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Accused Products
Abstract
A chemical, biological, radiological, and nuclear weapons detection system is disclosed that comprises an array of spatially-disparate hazardous material sensors that all feed into a centralized system control center. This enables the embodiment to receive and coordinate in one place all of the hazardous material sensors spread over a wide area, and, therefore, enables an alarm to be quickly issued in the event of a real attack. The illustrative embodiment also incorporates a mechanism to reduce the probability that a false alarm will be issued. In particular, the illustrative embodiment requires that at least 2 stations report an alarm for the same hazardous material within an interval of time. This prevents a false alarm from one hazardous material detection station from issuing a false system-wide alarm. This is based on the assumption that a real attack is more likely to be detected by stations that are near each other than by stations that have no proximity.
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Citations
18 Claims
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1. A system comprising:
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K spatially-disparate hazardous material detection stations, wherein each of said K hazardous material detection stations issues a first alarm when the amount of a first hazardous material reaches a first threshold; and a first system-wide alarm that is triggered when N of M of said neighboring hazardous material detection stations issues said first alarm; wherein N, M, and K are positive integers and 1<
N≦
M≦
K. - View Dependent Claims (2, 3)
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4. A method comprising:
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receiving a first alarm status from K spatially-disparate hazardous material detection stations; and triggering a first system-wide alarm when N of M of said neighboring hazardous material detection stations issues said first alarm; wherein N, M, and K are positive integers and 1<
N≦
M≦
K. - View Dependent Claims (5, 6)
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7. A system comprising:
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K spatially-disparate hazardous material detection stations, wherein each of said K hazardous material detection stations issues a first alarm when the amount of a first hazardous material reaches a first threshold; and a first system-wide alarm that is triggered when A % neighboring hazardous material detection stations within B meters issues said first alarm; wherein K is a positive integer, wherein A and B are positive real numbers, wherein 0%≦
A %≦
100%, and wherein at least one of A and B change based on an environmental factor. - View Dependent Claims (8, 9)
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10. A method comprising:
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receiving a first alarm status from K spatially-disparate hazardous material detection stations; and triggering a first system-wide alarm when A % of said neighboring hazardous material detection stations within B meters issues said first alarm; wherein K is a positive integer, B is a positive real number, and A is a positive real number, and 0%<
A %≦
100%. - View Dependent Claims (11, 12)
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13. A system comprising:
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K spatially-disparate hazardous material detection stations, wherein each of said K hazardous material detection stations issues a first alarm when the amount of a first hazardous material reaches a first threshold; a wind direction sensor for measuring the direction of wind in the vicinity of said K spatially-disparate hazardous material detection stations; and a first system-wide alarm that is triggered when N of said neighboring hazardous material detection stations issues said first alarm in the same order as the direction of said wind; wherein N and K are positive integers and 1<
N≦
K. - View Dependent Claims (14, 15)
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16. A method comprising:
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receiving a first alarm status from K spatially-disparate hazardous material detection stations; measuring the direction of wind in the vicinity of said K spatially-disparate hazardous material detection stations; and triggering a first system-wide alarm when N of M of said neighboring hazardous material detection stations issues said first alarm; wherein N, M, and K are positive integers and 1<
N≦
M≦
K. - View Dependent Claims (17, 18)
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Specification