Measuring and testing – Volume or rate of flow – By measuring vibrations or acoustic energy
Patent
1996-06-12
1998-07-07
Dougherty, Elizabeth L.
Measuring and testing
Volume or rate of flow
By measuring vibrations or acoustic energy
G01L 302
Patent
active
057772380
ABSTRACT:
An ultrasonic flowmeter for measuring the rate of flow of a fluid by means of bursts of ultrasonic drive pulses that are alternately transmitted and received by first and second ultrasonic transducers. A driver circuit is suitably coupled to the first and second transducers to cause the latter to alternately transmit ultrasonic signals in first and second directions through the fluid to be measured. A receiver circuit is coupled to the first and second transducers to cause the latter to alternately receive ultrasonic signals in first and second directions through the fluid to be measured. First and second driver switching means, preferably including tri-state buffers, allow the same driver circuit to drive both transducers. The driver and receiver circuits are directly coupled to the transducers and share a common ground.
REFERENCES:
patent: 4183244 (1980-01-01), Kohno et al.
patent: 4232548 (1980-11-01), Baumoel
patent: 4367654 (1983-01-01), Ymker et al.
patent: 4384491 (1983-05-01), Brown et al.
patent: 4397193 (1983-08-01), Ryan et al.
patent: 4425805 (1984-01-01), Ogura et al.
patent: 4454767 (1984-06-01), Shinkai et al.
patent: 4483202 (1984-11-01), Ogura et al.
patent: 4509373 (1985-04-01), Brown
patent: 4527433 (1985-07-01), Gutterman
patent: 4557148 (1985-12-01), Akiyama
patent: 4616510 (1986-10-01), Moore
patent: 4633719 (1987-01-01), Vander Heyden
patent: 4748857 (1988-06-01), Nakagawa
patent: 4787252 (1988-11-01), Jacobson et al.
patent: 4930358 (1990-06-01), Motegi et al.
patent: 5035147 (1991-07-01), Woodward
patent: 5052230 (1991-10-01), Lang et al.
patent: 5117698 (1992-06-01), Baumoel
patent: 5168762 (1992-12-01), Gill
patent: 5178018 (1993-01-01), Gill
patent: 5329821 (1994-07-01), Brinbaum et al.
patent: 5461931 (1995-10-01), Gill
patent: 5553505 (1996-09-01), Bignell et al.
patent: 5639971 (1997-06-01), Brown
Ultrasonic Measurement of Respiratory Flow, D. Plaut and J. Webster, IEEE Transactions on Biomedical Engin., vol. BME-27, No. 10, Oct. 1980, pp. 549-558.
A Pulsed Phase Measurement Ultrasonic Flowmeter For Medical Gases, A. Kou et al, Annals of Biomedical Engin., vol. 12, 1984, pp. 263-279.
Design and Construction of an Ultrasonic Pneumotachometer, D. Plaut and J. Webster, IEEE Transactions on Biomedical Engin., vol. BME-27, No. 10, Oct. 1980, pp. 590-597.
Dougherty Elizabeth L.
Welch Allyn Inc.
LandOfFree
Driver-receiver apparatus for use with ultrasonic flowmeters does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Driver-receiver apparatus for use with ultrasonic flowmeters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Driver-receiver apparatus for use with ultrasonic flowmeters will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1208231