Apparatus and method for a computerized fiber optic security system
US7800047B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2005 |
| Grant date | Sep 21, 2010 |
| Priority date | — |
| Expiry date | Mar 17, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B13/186
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A computerized apparatus and method for detecting unauthorized activity in a protected area in real-time using a fiber optic cable having an optical sensor line, a fiber scanning unit, and a computer. Detecting unauthorized activity is done by scanning the sensor line using the scanning unit to obtain repetitive scan signals representing the state of the sensor line, receiving scan signals at the computer, processing the scan signals to determine an initial baseline representing the normal state of the sensor line, storing the baseline, continuously monitoring the sensor line using the scan signals received in real-time by the computer, comparing the scan signal to the baseline, determining if a fault has occurred based on an predetermined attenuation change in one or more of the scan signals as compared to the baseline, generating a fault signal, and providing a warning of a fault in response to the fault signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.