US 12,461,229 B2
Occupant detection device
Rhodes B. Baker, Allentown, PA (US); Craig Alan Casey, Coopersburg, PA (US); Shilpa Sarode, Allentown, PA (US); and James P. Steiner, Royersford, PA (US)
Assigned to Lutron Technology Company LLC, Coopersburg, PA (US)
Filed by Lutron Technology Company LLC, Coopersburg, PA (US)
Filed on Oct. 22, 2022, as Appl. No. 17/971,575.
Claims priority of provisional application 63/262,891, filed on Oct. 22, 2021.
Prior Publication US 2023/0126895 A1, Apr. 27, 2023
Int. Cl. G01S 13/89 (2006.01)
CPC G01S 13/89 (2013.01) 20 Claims
OG exemplary drawing
 
1. An occupant detection device configured to detect an occupant in a space where the occupant detection device is installed, the occupant detection device comprising:
an occupant detection circuit configured to determine locations of one or more occupants in the space;
a low-power detection circuit that is configured to indicate an occupancy or vacancy condition in the space; and
a control circuit configured to:
determine that the low-power detection circuit indicates that there are no occupants within the space;
in response to the determination by the low-power detection circuit that there are no occupants within the space, determine that there is movement in an occupant map or a region of interest (ROI) as indicated by the locations of the one or more occupants as determined by the occupant detection circuit, and configure masked regions around the locations of the movement; and
store the masked regions in memory, wherein movement detected within the masked regions is ignored when determining an occupant count for the space.