Ultrasonic non-contact motion monitoring system

Details Ultrasonic non-contact motion monitoring system Ultrasonic non-contact motion monitoring system

1992-03-05

1993-06-22

Howell, Kyle L.

Surgery

Truss

Pad

12866107, 128721, 367 94, 367 95, B61B 812

Patent

active

052209229

ABSTRACT:
An ultrasonic non-contact motion monitoring system, useful for monitoring motional activities and such activities as respiration rate and heart beat rate. Using dual ultrasonic transducers, coherent sound waves are directed toward a moving subject. The phase frequency relationship of the reflected waves are compared to the transmitted sound waves in-phase and in phase-quadrature. The derived information, containing movement activity, is either displayed locally or sent to remote station(s) for display, processing and storage.

REFERENCES:
patent: 3803539 (1974-04-01), MacMaster
patent: 4122427 (1978-10-01), Karsh
patent: 4197856 (1980-07-01), Northrop
patent: 4657025 (1987-07-01), Orlando
patent: 4967751 (1990-11-01), Sterzer
patent: 5086775 (1992-02-01), Parker et al.

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