EP 3545269 A1 20191002 - METHOD FOR DELAY MEASUREMENT FOR AN ULTRASONIC SIGNAL IN A FLOWING FLUID
Title (en)
METHOD FOR DELAY MEASUREMENT FOR AN ULTRASONIC SIGNAL IN A FLOWING FLUID
Title (de)
VERFAHREN ZUR LAUFZEITMESSUNG EINES ULTRASCHALLSIGNALS IN EINEM STRÖMENDEN FLUID
Title (fr)
PROCÉDÉ DE MESURE DE TEMPS DU PROPAGATION D'UN SIGNAL ULTRASONORE DANS UN FLUIDE EN ÉCOULEMENT
Publication
Application
Priority
- DE 102016014088 A 20161124
- DE 102017005208 A 20170601
- EP 2017001345 W 20171116
Abstract (en)
[origin: WO2018095562A1] The present invention relates to a method for ultrasonic delay measurement in a fluid, in which a fluid flowing through a measurement path is subjected to a first transmission signal, generated by an ultrasonic transducer, at a first frequency f1 and to a second transmission signal, generated by the ultrasonic transducer, at a second frequency f2, the first and second transmission signals are received by an ultrasonic transducer and first and second received signals each having multiple waves are generated, the delay difference is determined from the received signals, a phase difference (PD) between the first received signal at the first frequency f1 and the second received signal at the second frequency f2 is measured, and the position of a measurement point in the region of the waves (wave train) of the received signal is derived from the measured phase difference (PD).
IPC 8 full level
G01F 1/66 (2006.01); G01F 1/74 (2006.01); G01F 7/00 (2006.01); G01F 15/02 (2006.01); G01F 25/00 (2006.01)
CPC (source: EP)
G01F 1/662 (2013.01); G01F 1/667 (2013.01); G01F 1/668 (2013.01); G01F 1/74 (2013.01); G01F 7/00 (2013.01); G01F 15/02 (2013.01); G01F 25/10 (2022.01)
Citation (search report)
See references of WO 2018095562A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102017005208 A1 20180524; EP 3545269 A1 20191002; WO 2018095562 A1 20180531
DOCDB simple family (application)
DE 102017005208 A 20170601; EP 17800387 A 20171116; EP 2017001345 W 20171116