Tornado warning system

Details Tornado warning system Tornado warning system

1987-02-10

1989-03-14

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

73170R, G08B 2100

Patent

active

048128252

ABSTRACT:
A tornado warning system uses a superhetrodyne receiver to detect electromagnetic energy produced by a tornado. The automatic gain control signal of the receiver is used to generate an intermediate signal having a time duration corresponding to the time when the automatic gain control is at or above a predetermined level. The intermediate signal is of constant amplitude and is integrated. Upon the integration reaching a predetermined level, an alarm initiate signal is produced which turns on an alarm drive and, in turn, sounds an alarm.

REFERENCES:
patent: 3646540 (1972-02-01), Cooper
patent: 3717861 (1973-02-01), Wright, Jr.
patent: 3753117 (1973-08-01), Downing
patent: 3790884 (1974-02-01), Kohl
patent: 3810137 (1974-05-01), Bacon, Jr. et al.
patent: 4115732 (1978-09-01), Krider
patent: 4175254 (1979-11-01), Manfreda
patent: 4219804 (1980-08-01), Weischedel
"The Picnicker's Friend" J. E. Shepler; Popular Electronics, Jul. 1969.

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