×

BATTERY-POWERED OCCUPANCY SENSOR

  • US 20100052894A1
  • Filed: 09/03/2008
  • Published: 03/04/2010
  • Est. Priority Date: 09/03/2008
  • Status: Active Grant
First Claim
Patent Images

1. A battery-powered occupancy/vacancy sensor for control of a lighting load in a room, said occupancy sensor comprising:

  • a top plate containing a lens;

    a bottom plate disposed in a plane parallel to the plane of said top plate, said bottom plate having fastening means for fastening said sensor to a surface of said room;

    a generally peripheral wall connecting the peripheries of said top plate and said bottom plate and defining a generally flat, shallow disk-shaped volume;

    a PIR detector circuit housed within the interior of said volume, said PIR detector circuit having a PIR detector aligned with said lens, said PIR detector operable to detect an occupancy or vacancy condition in said room;

    an RF transmission circuit housed within the interior of said volume and responsive to said PIR detector for transmitting an RF signal to designate the need for a change in the lighting in said room;

    a first battery housed within the interior of said volume for powering only said PIR detector circuit; and

    a second battery housed within the interior of said volume for powering said RF transmission circuit.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×