Threat sector indicating warner

Details Threat sector indicating warner Threat sector indicating warner

1992-12-21

1994-09-20

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

340540, 340567, 342 20, G08B 2100

Patent

active

053493338

ABSTRACT:
A warning apparatus for monitoring a plurality of threat sectors includes a receiving antenna for each threat sector for receiving electromagnetic radiation, an alarm channel for each respective threat sector and an amplifier interconnected between an output of the antenna on an input of the alarm channel. The alarm channel includes a high pass filter, a rectifier, an integrator and a comparator connected in series, an input of the filter constituting the input of the alarm channel, an output of the comparator constituting an output of the alarm channel. A threat sector activator is connected to an output of the comparator and activated by an output signal from the comparator in response to an input signal applied to the comparator from the integrator which exceeds a reference level, the activated threat sector indicator of the respective alarm channel indicating the threatened sector.

REFERENCES:
patent: 2862204 (1958-11-01), Henrichi et al.
patent: 3465253 (1969-09-01), Rittenbach
patent: 4375034 (1983-02-01), Guscott
patent: 5243179 (1993-09-01), Bjorkman

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