System for effective control of urban environment security

Details System for effective control of urban environment security System for effective control of urban environment security

1994-05-27

1996-04-02

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

367129, 367906, G01S 380

Patent

active

055047173

ABSTRACT:
A security system for detecting and reporting gunshot events for control of urban environment security which includes a communication link coupled to a plurality of pole units arranged in a dense grid. Each of the plurality of pole units includes a microphone, a data acquisition unit coupled to said microphone, a signal processor for discriminating gunshot events, and a communication interface apparatus coupled at an input to the signal processor. The communication interface also has an output coupled to the communication link, where the communication interface transmits and receives data on the communication link. A central processor is coupled to the communication link so as to receive data from and transmit data to the plurality of pole units. The central processor and the plurality of pole units operate so as to detect and locate gunshot events sensed by one or more of the plurality of pole units.

REFERENCES:
patent: 3341810 (1967-09-01), Wallen, Jr.
patent: 4091366 (1978-05-01), Lavallee
patent: 4279027 (1981-07-01), Van Sloun
G.R.A.I.D..TM. System By 3-I Inc., "Gunshot Reporting and Identification System", 3 pages, 3-I Inc., 5536-A Independence C, Punta Gorda, FL 33982.
"Gunfire Locater system South: Redwood City Residents Ask Police To Use SRI System", San Jose Mercury News-Local, Wednesday, Jan. 12, 1994.
Lahr, J. C. and F. G. Fischer, "Location of Acoustic Sources Using Seismological Techniques and Software", U.S. Department of the Interior, U.S. Geological Survey, Open-File Report 93-221.

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