Method of intrusion detection

Details Method of intrusion detection Method of intrusion detection

1988-05-18

1990-08-14

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340541, G08B 1318

Patent

active

049490745

ABSTRACT:
A method of intrusion detection which comprises the steps of: projecting a beam of infrared radiation toward a field of view from a detection device and receiving the radiation of the beam reflected from the field of view, determining the distance from the device at which the beam is reflected by the field of view, generating a signal indicative of the distance from the device at which the beam has been reflected by the field of view during a selected time period, storing a reference signal which is indicative of the distance of reflection of the beam from the field of view during a reference time period, comparing a signal from a selected time period with the reference signal, and generating an output signal if the signal differs from the reference signal in a preselected manner.

REFERENCES:
patent: 4512000 (1985-04-01), Masuko
patent: 4522492 (1985-06-01), Masunaga
patent: 4582424 (1986-04-01), Kawabata

Affiliated with

Also associated with

Rating

Method of intrusion detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-465315