EP 1754025 A2 20070221 - DETERMINATION OF THE RECEPTION TIME FOR AN ULTRASOUND SIGNAL BY MEANS OF PULSE SHAPE DETECTION
Title (en)
DETERMINATION OF THE RECEPTION TIME FOR AN ULTRASOUND SIGNAL BY MEANS OF PULSE SHAPE DETECTION
Title (de)
BESTIMMUNG DES EMPFANGSZEITPUNKTS EINES ULTRASCHALLSINGALS MITTELS PULSFORMERFASSUNG
Title (fr)
DETERMINATION DE L'INSTANT DE RECEPTION D'UN SIGNAL ULTRASONORE PAR DETECTION DE FORME D'IMPULSION
Publication
Application
Priority
- EP 2005051761 W 20050421
- DE 102004025243 A 20040522
Abstract (en)
[origin: WO2005114112A2] The invention relates to an ultrasound flow sensor, comprising at least one ultrasound converter (A,B) for the transmission and receiving of ultrasound signals (A0,B0) and a receiver unit (4) arranged on the ultrasound converter (A,B) which detects a zero transition (N) of the ultrasound signal (A0,B0) as reception time, after the ultrasound signal (A0,B0) has exceeded a given threshold value (SW). The measurement accuracy of the sensor can be significantly improved, if the receiver unit (4) detects the time of a parameter characterizing the ultrasound signal (A0,B0) and records the relative time shift (deltat) of the characteristic parameter (Ampmax,Ts) as the zero transition (N0 or N1) detected as reception time (to).
IPC 8 full level
G01F 1/66 (2006.01); G01H 5/00 (2006.01); G01P 5/24 (2006.01)
IPC 8 main group level
G01F (2006.01)
CPC (source: EP US)
G01F 1/66 (2013.01 - EP US)
Citation (search report)
See references of WO 2005114112A2
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
WO 2005114112 A2 20051201; WO 2005114112 A3 20060413; DE 102004025243 A1 20051208; EP 1754025 A2 20070221; JP 2007538240 A 20071227; JP 4976287 B2 20120718; US 2007186680 A1 20070816; US 8744785 B2 20140603
DOCDB simple family (application)
EP 2005051761 W 20050421; DE 102004025243 A 20040522; EP 05733644 A 20050421; JP 2007517225 A 20050421; US 59189705 A 20050421