Communications – electrical: acoustic wave systems and devices – Echo systems – Distance or direction finding
Patent
1997-08-28
1999-08-24
Pihulic, Daniel T.
Communications, electrical: acoustic wave systems and devices
Echo systems
Distance or direction finding
367 96, 280735, G01S 1506, G01S 1588, B60R 2132
Patent
active
059432950
ABSTRACT:
A method for determining the location of an object in a passenger compartment of a vehicle in which ultrasonic waves are transmitted from a first transducer into the passenger compartment, waves reflected off an object in the passenger compartment are received by the first transducer and a first distance from the first transducer to the object is calculated based on the time difference between the transmitted waves and reflected waves when received by the first transducer. Further, different ultrasonic waves are transmitted from a second transducer into the passenger compartment which then receives reflected waves off the object and a second distance from the second transducer to the object is calculated based on the time difference between the transmitted waves and reflected waves when received by the second transducer. The approximate location of the object in the passenger compartment is determined based on the first distance and the second distance.
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Breed David S.
DuVall Wilbur E.
Varga Andrew J.
Automotive Technologies International Inc.
Pihulic Daniel T.
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