Multi-zone intrusion detection system

Details Multi-zone intrusion detection system Multi-zone intrusion detection system

1975-01-21

1976-10-12

Swann, III, Glen R.

Communications: electrical

Systems

Call station

340 15, 343 77, G08B 1316

Patent

active

039861821

ABSTRACT:
An ultrasonic intrusion detection system having means for transmitting and receiving ultrasonic energy within a protected zone and generating an alarm when a moving object is present in the protected zone is supplemented to provide multiple independent response zones utilizing the same transmitter for all zones but individual receiver modules which can be added to the existing transmitter-receiver system to provide protection for additional independent zones with associated indicators for selectively indicating those zones which have been triggered by the presence of an intruder or other moving object.

REFERENCES:
patent: 2649538 (1953-08-01), Marlowe et al.
patent: 3680074 (1972-07-01), Lieser
patent: 3691558 (1972-09-01), Hoard et al.
patent: 3736584 (1973-05-01), Hackett et al.
patent: 3781859 (1973-12-01), Hermans
patent: 3803539 (1974-04-01), McMaster
patent: 3938118 (1976-02-01), Galvin et al.

Affiliated with

Also associated with

Rating

Multi-zone intrusion detection 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 Multi-zone intrusion detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-zone intrusion detection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-946944