Title:
INTRUSION DETECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO2005065376
Kind Code:
A3
Abstract:
An intrusion detection system contains a pair of optical lenses (100) arranged a predetermined distance apart and having overlapping fields of view within an area to be monitored to form a common field of view; at least one light-sensitive device (104) responsive to light from each of the optical lenses; a range detector responsive to signals from the light-sensitive device and operable to determine a range to an object within the common field of view; and a range discriminator for setting at least one range gate to sense objects within the common field of view at predetermined ranges and for ignoring objects outside of the predetermined ranges.
Inventors:
HARDIN LARRY C (US)
Application Number:
PCT/US2004/043941
Publication Date:
December 08, 2005
Filing Date:
December 28, 2004
Export Citation:
Assignee:
HARDIN LARRY C (US)
International Classes:
G01P3/38; G01P3/68; G01S11/12; G08B13/00; G08B13/194; H01J40/14; H04N13/239; (IPC1-7): H01J40/14; G08B13/00
Foreign References:
| US3811010A | 1974-05-14 | |||
| US5500525A | 1996-03-19 | |||
| US5045702A | 1991-09-03 | |||
| US5586063A | 1996-12-17 | |||
| US5602944A | 1997-02-11 |
Other References:
See also references of EP 1709664A4
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