Nuclear explosion detector with false alarm prevention

Details Nuclear explosion detector with false alarm prevention Nuclear explosion detector with false alarm prevention

1973-11-14

1977-08-23

Smith, Alfred E.

Radiant energy

Invisible radiant energy responsive electric signalling

324 72, G01J 100, G01T 100

Patent

active

040442586

ABSTRACT:
An antenna receives electromagnetic radiation and furnishes a corresponding signal which after differentiation sets a first monostable multivibrator whose output lasts for several microseconds. A photodiode receives light signals. If the light signals are received within the time that the first monostable multivibrator is set, the generation of an alarm is inhibited, since substantially simultaneous reception of electromagnetic and light signals indicates either atmospheric disturbance or conventional weapons. In the absence of an inhibit signal, a second multivibrator is set for several milliseconds at the end of the setting of the first multivibrator. Any light received while the second multivibrator is set results in the furnishing of an alarm.

REFERENCES:
patent: 3254219 (1966-05-01), Finlay et al.
patent: 3467826 (1969-09-01), Cotterman
patent: 3524984 (1970-08-01), Fothergill et al.

Affiliated with

Also associated with

Rating

Nuclear explosion detector with false alarm prevention does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Nuclear explosion detector with false alarm prevention, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear explosion detector with false alarm prevention will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2317464