Multiple zone object detection system

Details Multiple zone object detection system Multiple zone object detection system

1981-12-28

1984-07-10

Farley, Richard A.

Communications, electrical: acoustic wave systems and devices

Echo systems

Distance or direction finding

367 93, 367112, 367 96, G01S 1506

Patent

active

044596898

ABSTRACT:
Apparatus utilizing a combination energy transmitting and energy receiving transducer or a transducer set consisting of separate energy transmitting and energy receiving transducers, are employed to detect and subsequently indicate the presence of an object(s) within one or more of a plurality of spaced-apart spacial zones.

REFERENCES:
patent: 3321737 (1967-05-01), Russell
patent: 3522764 (1970-08-01), Biber et al.
patent: 3757285 (1973-09-01), Ferre
patent: 4186371 (1980-01-01), Toubkin et al.
patent: 4199246 (1980-04-01), Muggli
patent: 4280204 (1981-07-01), Elchinger

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