People and object counting system

Details People and object counting system People and object counting system

1979-10-16

1981-12-01

Thesz, Joseph M.

Registers

Platform operated

Platform actuated traffic counters

235 92PC, 235 92EV, 235 92V, G06M 314, G07C 900

Patent

active

043038514

ABSTRACT:
The perimeter of an area is scanned along two adjacent paths which define spacially resolved gates through which objects and people must pass to enter and leave the area. As the gates are scanned, the presence of objects and people are detected. A complete scan produces a gate signature which includes information indicative of the presence and location of objects and people in each gate during the scan. Successive signatures are compared in sequence as scans are made in order to determine changes caused by movement of objects and people in or out of the area. From this comparison an up/down counter is controlled to maintain a dynamic count of the number of objects or people in the area following each scan of the gates. The counter counts up as objects and people enter the area and counts down as they leave.

REFERENCES:
patent: 2965294 (1960-12-01), Urry
patent: 3692980 (1972-09-01), Getker et al.
patent: 3727034 (1973-04-01), Pope
patent: 4000400 (1976-12-01), Elder
patent: 4009389 (1977-02-01), Lindholm
patent: 4070560 (1978-01-01), Blanyer
patent: 4127766 (1978-11-01), Thayer

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