FIBER OPTIC SECURITY SYSTEM FOR SENSING THE INTRUSION OF SECURED LOCATIONS

Title:

FIBER OPTIC SECURITY SYSTEM FOR SENSING THE INTRUSION OF SECURED LOCATIONS

Document Type and Number:

WIPO Patent Application WO2004100095

Kind Code:

A3

Abstract:

A sensor for a security system is disclosed to detect intrusions at one or more predetermined locations wherein each location includes a moveable member 16 which must be moved in order to intrude the location. The system includes a fiber network 14 routed in close proximity to one or more locations. The sensor 24 comprises a sensor housing for being disposed at a location to detect a predetermined movement of the moveable member from a secure position to an unsecured position, and means for mounting the sensor housing in a stationary position at the location without a physical connection to the moveable member 16. The sensor housing includes a fiber inlet and a fiber outlet, and a fiber chamber for receiving a predetermined sensor fiber of the fiber network being routed through the sensor housing. The sensor has a sensor actuator for engaging the sensor fiber to generate an intrusion signal upon detecting predetermined movement of the moveable member causing the intrusion signal to be transmitted along the sensor fiber to a processor whereby the intrusion and location of the intrusion may be determined by the processor. Preferably, the sensor includes a magnetic actuator having a magnetic attraction to the moveable members whose interruption causes activation of the sensor and generation of the intrusion signal, and a signal shaping device acts to produce a signal having a prescribed minimum pulse width to assure detection no matter how quickly the senor actuator returns to a deactivated position.

Inventors:

BROWNING THOMAS E JR (US)
PHILLIPS MARK C (US)
WOOTEN RANDALL E (US)

Application Number:

PCT/US2004/013494

Publication Date:

September 15, 2005

Filing Date:

May 03, 2004

Export Citation:

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Assignee:

WOVEN ELECTRONICS CORP A SOUTH (US)
BROWNING THOMAS E JR (US)
PHILLIPS MARK C (US)
WOOTEN RANDALL E (US)

International Classes:

G02B6/44; G08B13/08; (IPC1-7): G08B13/00

Foreign References:

US5049855A	1991-09-17
US4777476A	1988-10-11
US4829286A	1989-05-09
US5592149A	1997-01-07

Other References: