Correlators

Details Correlators Correlators

1975-03-04

1977-04-19

Smith, Jerry

Registers

Transfer mechanism

Traveling pawl

73194E, 23515134, G06F 1534

Patent

active

040190382

ABSTRACT:
The speed of flow of a fluid is measured by transmitting across the flowing fluid upstream and downstream ultrasonic energy beams, transmitted beams, deriving electrical outputs therefrom, detecting the outputs to provide upstream and downstream detected signals representing noise imparted to the transmitted radiant energy beams by the flowing fluid, digitizing the detected signals, and imposing a time delay or delays on the upstream signal corresponding to the time delay between the upstream and downstream signals due to the spacing of the receiver means. A shift register imposes the time delay or delays and the transmission time of the shift register is controlled in response to the product of the signals.

REFERENCES:
patent: 3480956 (1969-11-01), Sanderson
patent: 3660647 (1972-05-01), Pryor, Jr.
patent: 3689157 (1972-09-01), Andermo
patent: 3777133 (1973-12-01), Beck et al.
patent: 3789663 (1974-02-01), Gold
patent: 3812493 (1974-05-01), Afendykiw et al.
patent: 3819919 (1974-06-01), McGunigle
patent: 3824015 (1974-07-01), Petit et al.
Hayes et al., Correlator Design for Flow-Measurement Radio and Electronic Eng., vol. 43, No. 6, pp. 363-368, June 1973, effective date 11/1971.

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