Communications: electrical – Condition responsive indicating system – With particular coupling link
Patent
1993-05-19
1996-09-24
Hofsass, Jeffery
Communications: electrical
Condition responsive indicating system
With particular coupling link
340525, 340541, 340557, 340565, 2503381, 250 DIG1, 348143, 348155, 348164, G08B 108, H04Q 700
Patent
active
055594964
ABSTRACT:
A system for detecting the presence and passage of vehicle, pedestrian, or other intrusion and/or traffic within one or more monitored areas. The system detects intrusions of nontransparent objects which interrupt energy projections, records and stores data on certain characteristics of the intrusion(s), and transmits such data to a base station through a communication link. System estimates approximate size, speed and directional characteristics of intruding object(s) with an "expert system". Selected environmental data may be detected and transmitted along with intrusion data. Provision for photographing intruding objects is included. The base station provides user interfaces, processes intrusion data, reports activity, summarizes traffic data, prints reports and stores such data for future retrival. The intrusion detection system is based on energy projection, and does not require a physical presence such as air hoses, switches or inductive devices across the immediate span being monitored. Devices may be portable, easy to set up and useful for concealed monitoring applications.
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Hofsass Jeffery
Wu Daniel J.
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