Data processing: measuring – calibrating – or testing – Measurement system in a specific environment – Mechanical measurement system
Reexamination Certificate
2008-12-19
2010-11-09
Bui, Bryan (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system in a specific environment
Mechanical measurement system
C073S861270
Reexamination Certificate
active
07831398
ABSTRACT:
According to the present invention, a method is provided for sensing a fluid flow within a pipe having a lengthwise axis to determine a parameter of the fluid flow. The method includes the following steps: a) providing an array of more than two ultrasonic sensors, each sensor having a transmitter and a receiver; b) disposing the transmitter and receiver of each sensor orthogonally relative to the lengthwise axis of the pipe; c) receiving ultrasonic signals using the receivers, which received signals result from initial signals transmitted from the transmitters of the ultrasonic sensors; d) processing the received signals from each sensor by projecting the received signals against a sine function and a cosine function, high pass filtering the projected signals, and using the high pass filtered projections to create an arrival vector within a complex plane, wherein the high pass filtered arrival vector is a rectified frequency doubled signal; and e) determining the parameter of the fluid flow using the arrival vector.
REFERENCES:
patent: 5228347 (1993-07-01), Lowell et al.
patent: 6354147 (2002-03-01), Gysling et al.
patent: 6481288 (2002-11-01), Humphrey et al.
patent: 6550345 (2003-04-01), Letton
patent: 6634239 (2003-10-01), Gomm et al.
patent: 6889562 (2005-05-01), Gysling et al.
patent: 7096719 (2006-08-01), Gysling
patent: 7261002 (2007-08-01), Gysling et al.
patent: 7295933 (2007-11-01), Gysling et al.
patent: 7322245 (2008-01-01), Gysling et al.
patent: 7331233 (2008-02-01), Scott
patent: 7343818 (2008-03-01), Gysling
patent: 7389187 (2008-06-01), Kersey et al.
patent: 7400985 (2008-07-01), Fernald et al.
patent: 7418877 (2008-09-01), Gysling
patent: 2008/0098818 (2008-05-01), Fernald et al.
patent: 2008/0098824 (2008-05-01), Bailey et al.
patent: 2008/0173100 (2008-07-01), Davis
patent: 4306119 (1994-09-01), None
patent: 2210169 (1989-06-01), None
patent: 9314382 (1993-07-01), None
Jacobson et al., “A New Method for the Demodulation of Ultrasonic Signals for Cross-Correlation Flowmeters,” Ultrasonics, May 1985, pp. 128-132.
Gysling Daniel L.
Winston Charles
Bui Bryan
Expro Meters Inc.
O'Shea Getz P.C.
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