Global Patent Index - EP 1242792 A1

EP 1242792 A1 2002-09-25 - METHOD AND DEVICE FOR DETECTING A DYSFUNCTION OF AN ULTRASONIC FLOWMETER

Title (en)

METHOD AND DEVICE FOR DETECTING A DYSFUNCTION OF AN ULTRASONIC FLOWMETER

Title (de)

VERFAHREN UND VORRICHTUNG ZUR FEHLERERKENNUNG FÜR EINEN ULTRASCHALLDURCHFLUSSMESSER

Title (fr)

PROCEDE ET DISPOSITIF DE DETECTION D'UN DYSFONCTIONNEMENT POUR UN DEBITMETRE A ULTRASONS

Publication

EP 1242792 A1 (FR)

Application

EP 00990063 A

Priority

  • FR 0003590 W
  • FR 9916699 A

Abstract (en)

[origin: FR2803383A1] The invention relates to a method for detecting a dysfunction such as clogging or ageing in a flowmeter comprising at least one transducer. Said method also enables the generation of a conditioned signal based on an analog signal from said transducer. The method comprises the following steps: measuring the receive signal (VIN) output from the transducer; comparing a characteristic of a received signal with a predetermined reference characteristic (VREF); storing a peak voltage (VPK) of the receive signal (VIN); generating a warning signal (VAL) when a triggering characteristic (VDEC) of the receive signal (VIN) is lower than the predetermined reference characteristic (VREF); defining a threshold voltage (VTH) which is proportionate to the peak amplitude of the receiving signal in such a way that (VTH) = K x (VPK), K being a factor that is dependent on the transducer; comparing the receive signal (VIN) to the threshold voltage (VTH); generating a conditioned output signal (VOUT) in a first state when a receive signal (VIN) is above a threshold voltage (VTH) and in a second state when the receive signal (VIN) is lower than the threshold voltage (VTH).

IPC 1-7 (main, further and additional classification)

G01F 1/66

IPC 8 full level (invention and additional information)

G01F 1/66 (2006.01)

CPC (invention and additional information)

G01F 1/667 (2013.01)

Citation (search report)

See references of WO 0150095A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

EPO simple patent family

FR 2803383 A1 20010706; FR 2803383 B1 20020329; AU 2686801 A 20010716; BR 0017057 A 20030107; CN 1192212 C 20050309; CN 1415068 A 20030430; EP 1242792 A1 20020925; JP 2003519375 A 20030617; MX PA02006401 A 20050826; RU 2002120506 A 20040310; RU 2232978 C2 20040720; US 6766276 B1 20040720; WO 0150095 A1 20010712

INPADOC legal status


2011-12-28 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20110701

2008-05-07 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20080407

2006-01-25 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: ACTARIS S.A.S.

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020725

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI