Acoustic system for measuring the speed of currents in a body of

Details Acoustic system for measuring the speed of currents in a body of Acoustic system for measuring the speed of currents in a body of

1977-05-06

1978-06-13

Ruehl, Charles A.

Measuring and testing

Meteorology

Electric disturbance

73194A, G01P 500, G01F 166

Patent

active

040941930

ABSTRACT:
An acoustic system for measuring the speed of flow or current speed of a body of water employing a measuring path through the water which extends from one shore to the other in a direction oblique to the direction of flow of the water. A triggerably measuring sound generator positioned on one shore transmits a pulse over the measuring path to a receiver on the other shore. The receiver produces an output which triggers the measuring sound generator to emit a subsequent pulse. A measuring circuit evaluates the resulting pulse repetition frequency of pulses emitted by the sound generator and produces an output proportional to the flow speed of the water.

REFERENCES:
patent: 3555899 (1971-01-01), Yamamoto et al.
patent: 3949605 (1976-04-01), Stallworth et al.

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