Speed measurement device

Details Speed measurement device Speed measurement device

1991-04-22

1992-12-08

Woodiel, Donald O.

Measuring and testing

Volume or rate of flow

By measuring vibrations or acoustic energy

731182, G01F 166

Patent

active

051687623

ABSTRACT:
A fluid speed measurement device includes a pair of ultrasonic transducers (T1, T2) spaced in a measuring chamber. A transmitter and receiver system is controlled by a microprocessor (100) which generates pulses which periodically invert and these are switched by switches (140, 150) to allow alternate direction of transmission. Reception and detection of signals is effected by blocks (152-168). Time calculation is determined by counter (109) and results are used to calculate flow speed or volume using the microprocessor. A speed increase in the measurement region is effected using a venturi device.

REFERENCES:
patent: 3788140 (1974-01-01), Turtle
patent: 3964309 (1976-06-01), Husse et al.
patent: 4104915 (1978-08-01), Husse
patent: 4140012 (1979-02-01), Hendriks
patent: 4325262 (1982-04-01), Meisser et al.
patent: 4480486 (1984-11-01), Meisser et al.
patent: 4630482 (1986-12-01), Traina
patent: 4787252 (1988-11-01), Jacobson et al.

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