SYSTEM AND METHOD FOR OCCUPANCY DETECTION
First Claim
1. A detection system, comprising:
- a plurality of sensors, comprising;
an entry sensor having a field of view oriented to detect object entry with respect to an entry portion of an occupancy volume; and
an exit sensor having a field of view oriented to detect object exit with respect to an exit portion of the occupancy volume, the exit portion different than the entry portion;
at least one approach sensor having a field of view oriented to detect object approach relative to the entry portion of the occupancy volume; and
at least one retreat sensor having a field of view oriented to detect object retreat relative to the exit portion of the occupancy volume.
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Accused Products
Abstract
A detection system includes a plurality of sensors including an entry sensor having a field of view oriented to detect object entry with respect to an entry portion of an occupancy volume, and an exit sensor having a field of view oriented to detect object exit with respect to an exit portion of the occupancy volume, the exit portion different than the entry portion. The detection system further includes at least one approach sensor having a field of view oriented to detect object approach relative to the entry portion of the occupancy volume, and at least one retreat sensor having a field of view oriented to detect object retreat relative to the exit portion of the occupancy volume.
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Citations
31 Claims
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1. A detection system, comprising:
a plurality of sensors, comprising; an entry sensor having a field of view oriented to detect object entry with respect to an entry portion of an occupancy volume; and an exit sensor having a field of view oriented to detect object exit with respect to an exit portion of the occupancy volume, the exit portion different than the entry portion; at least one approach sensor having a field of view oriented to detect object approach relative to the entry portion of the occupancy volume; and at least one retreat sensor having a field of view oriented to detect object retreat relative to the exit portion of the occupancy volume. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A detection system, comprising:
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a first sensor having a first field of view oriented to detect object entry with respect to an occupancy volume; a second sensor having a second field of view oriented to detect object exit with respect to the occupancy volume; a third sensor having a third field of view oriented to detect object approach relative to the occupancy volume; a fourth sensor having a fourth field of view oriented to detect object retreat relative to the occupancy volume. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A detection system, comprising:
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a first sensor having a first field of view oriented to detect object entry into a portal zone from a lane entry zone adjacent to the portal zone at an entry portion of the portal zone; a second sensor having a second field of view oriented to detect object exit from the portal zone into a lane exit zone adjacent to the portal zone at an exit portion of the portal zone opposing the entry portion of the portal zone; a third sensor having a third field of view oriented to detect object approach toward the portal zone within the lane entry zone; and a forth sensor having a forth field of view oriented to detect object retreat from the portal zone within the lane exit zone. - View Dependent Claims (16, 17, 18, 19)
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20. A method of occupancy detection, comprising:
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calibrating a first sensor to provide background detections of a first state of an occupancy volume absent an object of interest and having at least one background object; and detecting a second state of the occupancy volume having the object of interest by identifying background detections weaker than background detections of the first state. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification