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1. WO2016150385 - FPGA- AND DSP-BASED GAS ULTRASONIC FLOWMETER AND METERING METHOD THEREFOR

Publication Number WO/2016/150385
Publication Date 29.09.2016
International Application No. PCT/CN2016/077122
International Filing Date 23.03.2016
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
CPC
G01F 1/662
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
662Constructional details
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
G01F 1/74
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
74Devices for measuring flow of a fluid or flow of a fluent solid material in suspension in another fluid
G01N 2291/02836
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
02Indexing codes associated with the analysed material
028Material parameters
02836Flow rate, liquid level
G01N 2291/105
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2291Indexing codes associated with group G01N29/00
10Number of transducers
105two or more emitters, two or more receivers
G01N 29/024
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
29Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
02Analysing fluids
024by measuring propagation velocity or propagation time of acoustic waves
Applicants
  • 合肥工业大学 HEFEI UNIVERSITY OF TECHNOLOGY [CN]/[CN]
Inventors
  • 徐科军 XU, Kejun
  • 方敏 FANG, Min
  • 汪伟 WANG, Wei
  • 朱文姣 ZHU, Wenjiao
  • 沈子文 SHEN, Ziwen
Agents
  • 深圳市科进知识产权代理事务所(普通合伙) SHENZHEN KEJIN INTELLECTUAL PROPERTY OFFICE
Priority Data
201510130389.624.03.2015CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) FPGA- AND DSP-BASED GAS ULTRASONIC FLOWMETER AND METERING METHOD THEREFOR
(FR) DÉBITMÈTRE À ULTRASONS POUR GAZ À BASE DE FPGA ET DSP ET SON PROCÉDÉ DE MESURE
(ZH) 一种基于FPGA和DSP的气体超声流量计及其测量方法
Abstract
(EN)
An FPGA- and DSP-based gas ultrasonic flowmeter, consisting of a gas ultrasonic transducer and a sensor unit, a sending/receiving signal channel switching circuit, a drive signal generation and amplification circuit, an echo signal conditioning and collecting circuit, a time sequence controlling and signal processing circuit, a human-machine interface, a serial communicator and a power source management module. A variable threshold value zero-crossing detection method tracking a maximal peak value of an echo signal is adopted to calculate a transmission time of an ultrasonic echo, thereby further obtaining gas flow. Also provided is a metering method for the FPGA- and DSP-based gas ultrasonic flowmeter.
(FR)
L'invention concerne un débitmètre à ultrasons pour gaz à base de FPGA et DSP, consistant en un transducteur à ultrasons pour gaz et une unité de capteur, un circuit de commutation de canal de signal d'envoi/de réception, un circuit de génération et d'amplification de signal d'entraînement, un circuit de collecte et de conditionnement de signal d'écho, un circuit de commande de séquence temporelle et de traitement de signal, une interface homme-machine, un dispositif de communication série et un module de gestion de source d'alimentation. Un procédé de détection de passage par zéro d'une valeur seuil variable suivant une valeur de crête maximale d'un signal d'écho est adopté afin de calculer un temps de transmission d'un écho ultrasonore, ce qui permet d'obtenir en outre un débit de gaz. L'invention concerne également un procédé de mesure pour le débitmètre à ultrasons pour gaz à base de FPGA et DSP.
(ZH)
一种基于FPGA和DSP的气体超声流量计,由气体超声换能器和传感器单元、发射/接收信号通道切换电路、驱动信号生成和放大电路、回波信号调理与采集电路、时序控制与信号处理电路、人机接口、串口通讯和电源管理模块组成,采用跟踪回波信号最大峰值的可变阈值过零检测方法,计算超声回波的传播时间,进而获得气体流量。还提供一种基于FPGA和DSP的气体超声流量计的测量方法。
Latest bibliographic data on file with the International Bureau