Intrusion detecting apparatus

Details Intrusion detecting apparatus Intrusion detecting apparatus

1992-08-19

1995-07-18

Swann, Glen

Communications: electrical

Condition responsive indicating system

Specific condition

340556, 340666, 340668, G08B 1310

Patent

active

054345570

ABSTRACT:
In an intrusion detection system, at least one optical cable is provided, through which light enters at one of its ends and exits at the other end, at which other end a device for detecting changes in the light intensity passing through the cable is also provided. The system is usually part of a fence, but it can be used in structures such as roofs, windows, etc. When an intruder exerts force on the optical cable, its movement actuates a mechanical device so that a member thereof exerts pressure at a certain place on the cable, deforming the optical cable and causing light attenuation which is detected and actuates an alarm. When used as part of a fence, such mechanical sensing devices are provided at certain intervals from each other. Optical cables can be provided at different heights of such a fence, with light intensity attenuation means as described above.

REFERENCES:
patent: 4521767 (1985-06-01), Bridge
patent: 4533906 (1985-08-01), Amir
patent: 4829286 (1989-05-01), Zui
patent: 5055827 (1991-10-01), Philipp

Affiliated with

Also associated with

Rating

Intrusion detecting apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intrusion detecting apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intrusion detecting apparatus will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2420305