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1. (WO2019043388) ULTRASONIC FLOW RATE METERING
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Pub. No.: WO/2019/043388 International Application No.: PCT/GB2018/052447
Publication Date: 07.03.2019 International Filing Date: 30.08.2018
IPC:
G01F 1/66 (2006.01) ,A61B 8/00 (2006.01) ,B06B 1/00 (2006.01) ,G01S 15/00 (2006.01)
G PHYSICS
01
MEASURING; TESTING
F
MEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
1
Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
66
by measuring frequency, phase shift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
8
Diagnosis using ultrasonic, sonic or infrasonic waves
B PERFORMING OPERATIONS; TRANSPORTING
06
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
B
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
1
Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
15
Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
Applicants:
SENTEC LTD [GB/GB]; 5 The Westbrook Centre Milton Road Cambridge Cambridgeshire CB4 1YG, GB
Inventors:
DENG, Wenpeng; GB
BENNETT, Jan; GB
HEALY, David; GB
DAMES, Andrew Nicholas; GB
EVETT, James William; GB
Agent:
DUNLEAVY, Christopher; GB
JUMP, Timothy; GB
WALASKI, Jan; GB
GREY, Ian; GB
GILL, Siân; GB
DERRY, Paul; GB
ELEND, Almut; GB
HUTTER, Anton; GB
HEWETT, Jonathan; GB
HARRISON, Philip; GB
RUSSELL, Tim; GB
JOHNSON, Stephen; GB
BROWN, Alexander; GB
CHETTLE, John; GB
ANDERSON, Oliver; GB
HANDLEY, Matthew; GB
MAYS, Julie; GB
TAOR, Simon; GB
MCNAMARA, Kathryn; GB
CORK, Robert; GB
GILANI, Anwar; GB
SHELTON, Ruth; GB
MCDOUGALL, James; GB
CLARK, Jonathan; GB
COLONNA, Matthew; GB
DAINTY, Katherine; GB
FLETCHER, Scott; GB
HUDSON, George; GB
KENNEDY, Richard; GB
LEANSE, Thomas; GB
NEWCOMBE, Christopher; GB
PETTY, Catrin; GB
ROGAN, Jack; GB
SAYER, Robert; GB
THORNILEY, Peter; GB
WHITING, Gary; GB
PIOTROWICZ, Pawel; GB
BEASLEY, Benjamin; GB
HUNTER, Christopher; GB
ROSE, Kathryn; GB
VARLEY, James; GB
Priority Data:
1713895.930.08.2017GB
Title (EN) ULTRASONIC FLOW RATE METERING
(FR) MESURE DE DÉBIT ULTRASONORE
Abstract:
(EN) A method for an ultrasonic time-of-flight flow meter (1) includes driving an ultrasonic transducer (2, 3) using a first waveform (V1(t)) for a first duration (Δt1), the first waveform ( V1,(t)) configured to cause oscillation (21) of the ultrasonic transducer (2, 3), The method also includes driving the ultrasonic transducer (2, 3) using a second waveform (V2(t)) for a second duration (Δt2). There is a discontinuity between the first waveform (V1(t)) and the second waveform (V2(t)). The second waveform (V2(t)) and the second duration (Δt2) are configured to maintain a voltage (Vt-(t)) across the ultrasonic transducer (2, 3) within a predetermined range (Vh, VL).
(FR) L'invention concerne un procédé pour un débitmètre temps de vol ultrasonore (1) qui comprend la commande d'un transducteur ultrasonore (2, 3) en utilisant une première forme d'onde (V 1 (t)) ) pendant une première durée (Δt 1 ), la première forme d'onde( V 1 ,(t)) configurée pour provoquer l'oscillation (21) du transducteur ultrasonore (2, 3). Le procédé comprend également la commande du transducteur ultrasonore (2, 3) en utilisant une seconde forme d'onde(V 2 (t)) pendant une seconde durée (Δt 2 ). Il y a une discontinuité entre la première forme d'onde (V 1 (t)) et la seconde forme d'onde (V 2 (t)). La seconde forme d'onde (V 2 (t)) et la seconde durée (Δt 2 ) sont configurées pour maintenir une tension(V t -(t)) à travers le transducteur ultrasonore (2, 3) dans une plage prédéterminée (V h , V L ).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)