Tamper detection system having plurality of inflatable liner panels with optical couplers
First Claim
1. A tamper detection system for a multisided container, comprising:
- a plurality of inflatable liner panels, each sized to line an interior wall of a respective side of the container;
each of the inflatable liner panels having an optical fiber therein and extending in a path across substantially the entire area of the panel, the optical fiber having a first end and a second end; and
each of the inflatable liner panels having a first coupler connected to the first end of the optical fiber and a second coupler connected to the second end of the optical fiber;
wherein at least one of the couplers of each panel is operative to interconnect to at least one of the couplers of another panel to provide a continuous path through the interconnected optical fibers of the interconnected panels.
4 Assignments
0 Petitions
Accused Products
Abstract
An inflatable sheet includes an optical fiber extending across at least a portion of its surface to detect a breach or nuclear radiation. The sheet can line at least a portion of a container or several such sheets can line several walls of the container. A breach of the sheet or radiation within or near the sheet reduces optical transmissibility of the fiber. The fiber integrates the radiation over time and/or over the length and volumetric mass of the fiber, making the fiber sensitive to even low-level radiation. The optical fiber is monitored for a change in its transmissibility. A reduction in the transmissibility, such as to below a threshold, can trigger an alarm, such as an annunciator, a self-destruct circuit or send a message that includes information about the time or the container'"'"'s contents or location when the breach or radiation is detected to a central location, such as a ship'"'"'s control room or port notification system.
75 Citations
23 Claims
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1. A tamper detection system for a multisided container, comprising:
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a plurality of inflatable liner panels, each sized to line an interior wall of a respective side of the container; each of the inflatable liner panels having an optical fiber therein and extending in a path across substantially the entire area of the panel, the optical fiber having a first end and a second end; and each of the inflatable liner panels having a first coupler connected to the first end of the optical fiber and a second coupler connected to the second end of the optical fiber; wherein at least one of the couplers of each panel is operative to interconnect to at least one of the couplers of another panel to provide a continuous path through the interconnected optical fibers of the interconnected panels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21)
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20. A detection system for a multisided container, comprising;
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a plurality of inflatable liner panels each sized to line an interior wall of a respective side of the container; each of the inflatable liner panels having an annealing-resistant optical fiber embedded therein and extending in a path across substantially the entire area of the panel, the annealing-resistant optical fiber having a first end and a second end; the annealing-resistant optical fiber being reactive to nuclear radiation impinging on the panel to cause a decrease in light-carrying capacity of the annealing-resistant optical fiber; the ends of the annealing-resistant optical fiber of the plurality of inflatable liner panels being interconnected to provide a continuous optical path through the plurality of inflatable liner panels; a light source optically coupled to one end of the annealing-resistant optical fiber path of the interconnected inflatable liner panels for introducing light; a light detector optically coupled to the other end of the optical path of the interconnected inflatable liner panels for receiving light from the optical path; and a circuit connected to the light detector and operative to detect the decrease in light-carrying capacity of the annealing-resistant optical fiber and to provide an indication thereof. - View Dependent Claims (22, 23)
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Specification