Self-Operated Perimeter Intrusion Detection System
First Claim
15. A method for operating an assembly of an anti-intruder system which sets up an alarm when being breached comprising the steps of:
- (a) providing at least a first and a second array having each a multiplicity of infra-red optical transceivers, each transceiver includes a light source and a light detector, the arrays are mounted oppositely and facing, each other in a master/slave configuration, wherein the light detector of each transceiver of said at least first and second arrays is illuminated by more than a single light source of said transceiver of said opposite array,(b) adjusting intensity of the light emitted by said light source of said transceiver of said master array in response to a level of illumination received by said light detector of said transceiver of said slave array and(c) identifying an origin light source among said light sources of said master array s and a destination light detector among said light detectors of said slave array of a light beam which was blocked by an intruding object.
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Accused Products
Abstract
An anti-intruder system which sets up an alarm when being breached, the system comprises of plurality of posts deployed apart forming a peripheral fence, each post carries at least a master optical array and a slave optical array, each optical array has a multiplicity of infra-red transceivers, each transceiver includes a light source and a light detector, the master array is mounted oppositely to and facing the slave array of an adjacent post, wherein the light detector of each transceiver of each optical array is illuminated by more than a single light source of the transceivers of the opposite optical array and the intensity of illumination of the light sources of the transceivers of the master optical array are automatically adjusted according to the light intensity arriving to the light detectors of the transceivers of the slave optical array. The system identifies an intrusion event by recognizing the origin light source and the destination light detector of a light beam which is obstructed by an intruding object.
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Citations
30 Claims
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15. A method for operating an assembly of an anti-intruder system which sets up an alarm when being breached comprising the steps of:
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(a) providing at least a first and a second array having each a multiplicity of infra-red optical transceivers, each transceiver includes a light source and a light detector, the arrays are mounted oppositely and facing, each other in a master/slave configuration, wherein the light detector of each transceiver of said at least first and second arrays is illuminated by more than a single light source of said transceiver of said opposite array, (b) adjusting intensity of the light emitted by said light source of said transceiver of said master array in response to a level of illumination received by said light detector of said transceiver of said slave array and (c) identifying an origin light source among said light sources of said master array s and a destination light detector among said light detectors of said slave array of a light beam which was blocked by an intruding object. - View Dependent Claims (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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19-1. The method as in claim 17 wherein said light emits a wavelength of between about 750 nm and about 1600 nm.
- 26. An anti-intruder system, which sets up an alarm when being breached, the system comprises of plurality of posts deployed apart forming, a peripheral fence, each post carries at least a first master optical array and at least a second slave optical array, each optical array has a multiplicity of infra-red transceivers, each transceiver includes a light source and a light detector, the master array is mounted oppositely to and facing the slave array of an adjacent post, wherein the light detector of each transceiver of either optical array is illuminated by more than a single light source of the transceiver of the opposite optical array and the intensity of illumination of each light source of the transceiver of the master optical array is automatically adjusted according to the light intensity arriving to the light detector of the transceiver of the slave optical array, the system identifies an intrusion event by recognizing an origin light source and a destination light detector of a light beam which is blocked by an intruding object.
Specification