Microwave sensor

Details Microwave sensor Microwave sensor

2006-07-18

2006-07-18

Hofsass, Jeffery (Department: 2612)

Communications: electrical

Condition responsive indicating system

Specific condition

C342S027000, C342S104000, C342S111000, C342S114000

Reexamination Certificate

active

07079030

ABSTRACT:
A microwave sensor transmits a plurality of microwaves having different frequencies to a detection area and performs an object detecting operation based on reflected waves of the microwaves of an object present in the detection area. The microwave sensor includes object determining means that determines whether or not the object present in the detection area is an object to be detected, based on a moving direction of the object in the detection area.

REFERENCES:
patent: 3832709 (1974-08-01), Klein et al.
patent: 3845461 (1974-10-01), Foreman
patent: 4065768 (1977-12-01), Kondoh et al.
patent: 4195289 (1980-03-01), Cole
patent: 4286260 (1981-08-01), Gershberg et al.
patent: 6380882 (2002-04-01), Hegnauer
patent: 6677887 (2004-01-01), Harman
patent: 2002/0060639 (2002-05-01), Harman

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