Security system

Details Security system Security system

1986-04-08

1987-11-10

Levy, Stewart J.

Communications: electrical

Condition responsive indicating system

Specific condition

340565, 340566, G08B 1300

Patent

active

047060697

ABSTRACT:
A security system is disclosed which senses a variety of activities which affect a secured area and/or the boundary which defines it and identifies particular activities rather than merely indicating that some activity is present. A transducer comprising an electroded ferroelectric film of polyvinylidene fluoride (PVDF) serves as a transducer which provides different output signals in response to different stimuli and responds simultaneously to thermal and mechanical activity. A signal processor separately recognizes the signals produced in response to different activities and identifies the activities detected. An alarm processor controls the system and generates alarm signals in response to the detection of specific activities.

REFERENCES:
patent: 3005191 (1961-10-01), Schmidt
patent: 3409886 (1968-11-01), Davis et al.
patent: 3518654 (1970-06-01), Vassil
patent: 3633194 (1972-01-01), Kothe
patent: 3912830 (1975-10-01), Murayama et al.
patent: 3925763 (1975-12-01), Wadhwani et al.
patent: 4052716 (1977-10-01), Mortensen
patent: 4385287 (1983-05-01), Eatwell
patent: 4419599 (1983-12-01), Micheron
patent: 4490639 (1984-12-01), Echols et al.
RCA Features, vol. 3, No. 1, RCA Aerospace and Defense, Cherry Hill, N.J. 03858, Jan./Feb. 1986, p. 2.
Model SYS300 Data Sheet, Interstate Electronics Corporation, 1982.

Affiliated with

Also associated with

Rating

Security system does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1070775