Intrusion detection system

Details Intrusion detection system Intrusion detection system

1989-11-30

1991-02-05

Tarcza, Thomas H.

Communications, electrical: acoustic wave systems and devices

Echo systems

Returned signal used for control

367909, G01S 1500

Patent

active

049911465

ABSTRACT:
A microprocessor-based ultrasonic intrusion detection system includes an initialization mode wherein a plurality of echoes are cumulatively processed to produce a reference or signature data set representing the area to be monitored without intruding objects. Later received echoes are compared to this signature so that an intruding object will cause generation of an alarm signal. Time varying thresholds are utilized to compensate for attenuation caused by increased distance.

REFERENCES:
patent: 4197528 (1980-04-01), Gibson
patent: 4229811 (1980-10-01), Salem
patent: 4290126 (1981-09-01), McFadyen
patent: 4382291 (1983-05-01), Nakauchi
patent: 4499564 (1985-02-01), Sirai
patent: 4512000 (1985-04-01), Masuko
patent: 4542489 (1985-09-01), Naruse
patent: 4608674 (1986-08-01), Guscott
patent: 4628496 (1986-12-01), Lee
patent: 4639902 (1987-01-01), Leverance et al.
patent: 4779240 (1988-10-01), Dorr
patent: 4800540 (1989-01-01), Annala
Opcon Inc., "UC60--LN1A Ultrasonic Sensor--Installation Instructions", pp. 1-11, 1988.
International Automotive Products, "The Ultrasonic Tattletail", 4 pages.
Massa Products Corporation, "Model E--200 Ultrasonic Ranging Module", 7 pages, 1988.
BATS Inc., "Blindspot Warning System Model BS1000", 2 pages.
Opcon, Inc., "Sonic Sensors--Price List 600", 4 pages, 1988.
Weigand, "Montageanlleitung Range Master . . . ", 7 pages, 1988.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-17198