Electrical pulse counters – pulse dividers – or shift registers: c – Applications – Counting animate or inanimate entities
Patent
1988-09-28
1991-02-12
Heyman, John S.
Electrical pulse counters, pulse dividers, or shift registers: c
Applications
Counting animate or inanimate entities
340567, 2503381, 250342, G07C 900, G08B 1318
Patent
active
049930494
ABSTRACT:
An infrared sensitive system which maintains an inventory of the number of occupants within a monitored room for controlling certain electronic equipment in response to the presence of occupants within the monitored room. The monitoring system activates the electronic equipment when it senses a person entering the unoccupied room, and it deactivates the electronic equipment when the last person exits the room. Switch members provide for manually resetting and overriding the control portion of the system.
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Heyman John S.
Stearns Arlyce R.
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