Optical fiber cable based intrusion detection system
US6980108B1 · kind B1 · utility
31Cited by
16References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Apr 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/186
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
There is provided an electronic security system for a perimeter structure that incorporates a fiber optic cable secured to the perimeter structure. Typically the perimeter structure is a fence. A light pulse is transmitted down the fiber optic cable. Mechanical attenuation devices disposed at various locations along the fiber optic cable are responsive to intrusion attempts. The mechanical attenuation devices produce measurable attenuations to the light pulse. Using backscattering light detection technology an intrusion attempt and the location of an intrusion is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.