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1. WO2016141981 - RECIPROCAL TRANSCEIVER CIRCUIT FOR FLOW METER

Publication Number WO/2016/141981
Publication Date 15.09.2016
International Application No. PCT/EP2015/055035
International Filing Date 11.03.2015
IPC
G01F 1/66 2006.01
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW, OR LIQUID LEVEL; METERING BY VOLUME
1Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
66by measuring frequency, phase shift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters
G01S 7/523 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO 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
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
52of systems according to group G01S15/58
523Details of pulse systems
CPC
G01F 1/667
GPHYSICS
01MEASURING; TESTING
FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
1Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through the meter in a continuous flow
66by measuring frequency, phaseshift, or propagation time of electromagnetic or other waves, e.g. ultrasonic flowmeters
667Schematic arrangements of transducers of ultrasonic flowmeters; Circuits therefor
Applicants
  • DANFOSS A/S [DK]/[DK]
Inventors
  • JESPERSEN, Lars
Agents
  • MADSEN, Steen
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) RECIPROCAL TRANSCEIVER CIRCUIT FOR FLOW METER
(FR) CIRCUIT ÉMETTEUR-RÉCEPTEUR RÉCIPROQUE POUR DÉBITMÈTRE
Abstract
(EN)
The present invention relates to a transceiver circuit for a flow meter comprising a common signal path for signals to be transmitted and received, the transceiver circuit comprising a generator circuit, a signal processing circuit and a transimpedance amplifier, wherein the transimpedance amplifier comprises a combined input/output terminal being operatively connectable to one or more associated transducers, and wherein the transimpedance amplifier provides a separate transmitting impedance ZTx between an input terminal and the combined input/output terminal, and a separate receiving impedance ZRx between the combined input/output terminal and an output terminal.
(FR)
La présente invention concerne un circuit émetteur-récepteur pour un débitmètre comportant un trajet de signal commun pour des signaux devant être transmis et reçus, le circuit émetteur-récepteur comprenant un circuit générateur, un circuit de traitement de signaux et un amplificateur d'adaptation d'impédance, l'amplificateur d'adaptation d'impédance comprenant une borne d'entrée/sortie combinée apte à être connectée en fonctionnement à un ou plusieurs transducteur(s) associé(s), et l'amplificateur d'adaptation d'impédance fournissant une impédance de transmission distincte ZTx entre une borne d'entrée et la borne d'entrée/sortie combinée, et une impédance de réception distincte ZRx entre la borne d'entrée/sortie combinée et une borne de sortie.
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