Low voltage motion sensor for activating a high voltage load

Details Low voltage motion sensor for activating a high voltage load Low voltage motion sensor for activating a high voltage load

1988-06-03

1989-04-11

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

307116, 307140, 361179, 340552, 340554, G08B 1316

Patent

active

048209384

ABSTRACT:
The present invention utilizes a latching relay having on and off inputs for controlling power to a load. The on and off inputs of the relay are controlled by pulse generators which are in turn controlled by an occupancy sensor circuit. These pulse generators provide pulses when movement is initially detected in a room and when no movement has been detected for a predetermined time, respectively. The outputs of the pulse generators are coupled to an isolation circuit which isolates the power supply for the occupancy sensor from the pulses during each pulse to prevent damage to the power supply.

REFERENCES:
patent: 4166273 (1979-08-01), Riley, Jr. et al.
patent: 4661720 (1987-04-01), Cameron, Jr. et al.
patent: 4719405 (1988-01-01), Boucher

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