Patent ID: 7155317
Filing Date: 2006-12-26
Classification: H05B,Y02B

Abstract:
1. A smart switch system called Occupant Counter Control Switch, or OCCS, automatically turning on and off electrical appliances by intelligently keeping track of and displaying the number of occupants in a room via the process of counting up or counting down when detecting a person entering or leaving the room respectively (see FIG. 1 ), the said OCCS comprises of: a Vision-Restricted PIR Motion Detector for generating two distinctive signals that correspond to the two different directions of a person entering or exiting the room (see a removable dome shape clear plastic or Fresnel lens for covering and protecting the said Vision-Restricted PIR Motion Detector from accidentally getting contacted and changed its pre-aimed direction (see a photo sensor for detecting ambient light (see a digital display controlled by a program that sequentially and rapidly flashes each segment at a time for displaying the figure of the count value that indicating number of occupants in the room, or displaying a scale value of tuning processes, or displaying a letter “L” indicating the system is in sleep mode, or a letter “A” indicating the system is in adjusting mode (see two soft touch push buttons for manually controlling a relay, driving the electrical load, and for serving other functions (see an amplifier circuit with band-pass filter for filtering 60 to 120 Hz noises and amplifying the signal of the said PIR sensor (see a delicate and complicated program embedded in a microprocessor IC chip as a central processing of all inputs and outputs of the said smart switch.