Data processing: generic control systems or specific application – Specific application – apparatus or process – Robot control
Reexamination Certificate
2006-12-26
2006-12-26
Knight, Anthony (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Robot control
C307S117000, C340S545300
Reexamination Certificate
active
07155317
ABSTRACT:
A provided smart switch called Occupant Counter Control Switch, or OCCS, basically comprises of a motion sensor PIR, a photo sensor, an amplifier with band-pass filter, a microprocessor, a digital display, and a relay or triac to drive electrical appliances such as lights. The PIR sensor detects heat from a human body moving across it and generates a distinctive signal that is, unique to each of the two directions, further processed by the microprocessor for counting and thereby controlling the relay. Installed at the entrance of a room replacing the regular switch (see FIG.1), the OCCS counts up, displaying a digit great than zero, upon detecting a person entering the room and turns on the lights if sensing insufficient ambient light. OCCS constantly energizes the lights during the room is occupied and immediately switches them off upon counting down to zero when detecting the last person exiting the room.
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