Verfahren und Vorrichtung zur Messung einer pulsierend schwankenden Durchflussrate

Details

Veröffentlichungs-Nr.

EP2824430

Aktenzeichen

EP14172401

Anmeldetag

13. Juni 2014

Veröffentlichung

10. April 2019

Erteilung

10. April 2019

Rechtsraum

EP

IPC

G01F1/66G01F1/72

Abstract

[Object] To provide a method and an apparatus capable of measuring a pulsatingly fluctuating flow rate under a general condition, without needing electrical conductivity for a fluid, and without allowing a phase lag corresponding to a calculation time or attenuation or a phase lag resulting from a relation between pressure difference and flow rate to occur. [Means to Accomplish the Object] Ultrasonic waves are repeatedly transmitted with respect to a pulsatingly fluctuating fluid, while the ultrasonic wave being received, and a signal indicative of the transmission and receipt, and a signal indicative of a timing of the transmission and receipt are recorded. Alternatively, the ultrasonic wave is transmitted and received based on a preliminarily set timing signal, and the signal indicative of the transmission and receipt is recorded. These signals are used to determine flow rates and transmission and receipt timings to plot a pulsating fluctuation. In the case of performing transmission and receipt of the ultrasonic wave based on the preliminarily set timing signal, it is preferable to phase-synchronize the timing signal with a pulsation reference signal.

Anmelder

Firma

Japan Aerospace Exploration Agency

Land

🇯🇵 Japan

Fachgebiete