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1. (WO2018162250) METHOD FOR MEASURING A SPEED OF A FLUID
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Pub. No.: WO/2018/162250 International Application No.: PCT/EP2018/054451
Publication Date: 13.09.2018 International Filing Date: 22.02.2018
IPC:
G01P 5/24 (2006.01) ,G01F 1/66 (2006.01) ,G01D 4/00 (2006.01) ,G01D 3/08 (2006.01)
G PHYSICS
01
MEASURING; TESTING
P
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
5
Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
24
by measuring the direct influence of the streaming fluid on the properties of a detecting acoustical wave
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
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
4
Tariff metering apparatus
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
3
Measuring arrangements with provision for the special purposes referred to in the subgroups of this group
08
with provision for safeguarding the apparatus, e.g. against abnormal operation, against breakdown
Applicants:
SAGEMCOM ENERGY & TELECOM SAS [FR/FR]; 250, route de l'Empereur 92500 Rueil Malmaison, FR
Inventors:
TEBOULLE, Henri; FR
Agent:
LAVAUD, Thomas; FR
LAVIALLE, Bruno; FR
DECORCHEMONT, Audrey; FR
PROUVEZ, Julien; FR
Priority Data:
175199010.03.2017FR
Title (EN) METHOD FOR MEASURING A SPEED OF A FLUID
(FR) PROCEDE DE MESURE D'UNE VITESSE D'UN FLUIDE
Abstract:
(EN) A method for measuring a speed of a fluid, comprising measurement phases and detection phases each carried out between two measurement phases, each detection phase comprising the steps of; - measuring a spurious ultrasonic signal level; - comparing the spurious ultrasonic signal level with a detection threshold (S_n) capable of assuming a plurality of predefined values; - if the measured spurious ultrasonic signal level is less than the detection threshold (S_n), reducing the detection threshold (S_n), and repeating the measurement step and the comparison step; - when the measured spurious ultrasonic signal level becomes greater than or equal to the detection threshold (S_l), detecting a disturbance and, depending on the value of the detection threshold (S_l), determining if the disturbance originates from an anomaly or from attempted fraudulent activity.
(FR) Procédé de mesure d'une vitesse d'un fluide, comportant des phases de mesure et des phases de détection réalisées chacune entre deux phases de mesure, chaque phase de détection comportant les étapes; - de mesurer un niveau de signal ultrasonore parasite; - de comparer le niveau de signal ultrasonore parasite avec un seuil de détection (S_n) susceptible de prendre une pluralité de valeurs prédéfinies; - si le niveau de signal ultrasonore parasite mesuré est inférieur au seuil de détection (S_n), de réduire le seuil de détection (S_n), et de réitérer l'étape de mesure et l'étape de comparaison; - lorsque le niveau de signal ultrasonore parasite mesuré devient supérieur ou égal au seuil de détection (S_l), de détecter une perturbation et, en fonction de la valeur du seuil de détection (S_l), de déterminer si la perturbation provient d'une anomalie ou d'une tentative de fraude.
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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: French (FR)
Filing Language: French (FR)