AT10959U2 - ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES - Google Patents

ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES Download PDF

Info

Publication number
AT10959U2
AT10959U2 AT0055109U AT5512009U AT10959U2 AT 10959 U2 AT10959 U2 AT 10959U2 AT 0055109 U AT0055109 U AT 0055109U AT 5512009 U AT5512009 U AT 5512009U AT 10959 U2 AT10959 U2 AT 10959U2
Authority
AT
Austria
Prior art keywords
gas
temperature
sound signals
determined
flow
Prior art date
Application number
AT0055109U
Other languages
German (de)
Other versions
AT10959U3 (en
Original Assignee
Avl List Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Avl List Gmbh filed Critical Avl List Gmbh
Priority to AT0055109U priority Critical patent/AT10959U3/en
Publication of AT10959U2 publication Critical patent/AT10959U2/en
Publication of AT10959U3 publication Critical patent/AT10959U3/en
Priority to DE102010035859A priority patent/DE102010035859A1/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G01F1/668Compensating or correcting for variations in velocity of sound
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/02Compensating or correcting for variations in pressure, density or temperature
    • G01F15/04Compensating or correcting for variations in pressure, density or temperature of gases to be measured
    • G01F15/043Compensating or correcting for variations in pressure, density or temperature of gases to be measured using electrical means
    • G01F15/046Compensating or correcting for variations in pressure, density or temperature of gases to be measured using electrical means involving digital counting
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/22Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
    • G01K11/24Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of the velocity of propagation of sound
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K13/00Thermometers specially adapted for specific purposes
    • G01K13/02Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K15/00Testing or calibrating of thermometers
    • G01K15/005Calibration

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Measuring Volume Flow (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Claims (14)

österreichisches Patentamt AT 10 959 U2 2010-01-15 Ansprüche 1. Ultraschall-Gasdurchflusssensor, umfassend ein vom Gas durchströmtes Messrohr (1) mit zumindest einem Sende-Schallwandler (2) zur Schallgenerierung und zumindest einem Empfangs-Schallwandler (3) zum Empfang der zeitlich transienten Schallsignale und eine Sende-, Empfangs- und Auswerte-Elektronik (4), dadurch gekennzeichnet, dass zumindest ein Temperatursensor (5) für die Messung der Temperatur des Gases vorgesehen und mit der Auswerteelektronik (4) verbunden ist, wobei in der Auswerteelektronik (4) ein Auswertealgorithmus implementiert ist, der aus der Laufzeit der Schallsignale die Gastemperatur ermittelt und diese mit der vom Temperatursensor (5) gemessenen Temperatur des Gases vergleicht.Austrian Patent Office AT 10 959 U2 2010-01-15 Claims 1. Ultrasonic gas flow sensor, comprising a measuring tube (1) through which flows gas, with at least one transmitting transducer (2) for sound generation and at least one receiving transducer (3) for receiving the temporally transient sound signals and a transmitting, receiving and evaluation electronics (4), characterized in that at least one temperature sensor (5) for measuring the temperature of the gas is provided and connected to the transmitter (4), wherein in the transmitter (4) an evaluation algorithm is implemented which determines the gas temperature from the transit time of the sound signals and compares these with the temperature of the gas measured by the temperature sensor (5). 2. Gasdurchflusssensor nach Anspruch 1, dadurch gekennzeichnet, dass in der Auswerteelektronik (4) ein Auswertealgorithmus implementiert ist, der die Ermittlung der Temperatur des Gases aus der Laufzeit der Schallsignale durch die vom Temperatursensor (5) gemessene Temperatur des Gases kalibriert.2. Gas flow sensor according to claim 1, characterized in that in the transmitter (4) an evaluation algorithm is implemented, which calibrates the determination of the temperature of the gas from the running time of the sound signals by the temperature sensor (5) measured temperature of the gas. 3. Ultraschall-Gasdurchflusssensor, umfassend ein vom Gas durchströmtes Messrohr (1) mit zumindest einem Sende-Schallwandler (2) zur Schallgenerierung und zumindest einem Empfangs-Schallwandler (3) zum Empfang der zeitlich transienten Schallsignale und eine Sende-, Empfangs- und Auswerte-Elektronik (4), dadurch gekennzeichnet, dass zumindest ein Temperatursensor (5) für die Messung der Temperatur des Gases vorgesehen und mit der Auswerteelektronik (4) verbunden ist, wobei in der Auswerteelektronik (4) ein Auswertealgorithmus implementiert ist, der aus der Laufzeit der Schallsignale die Gastemperatur ermittelt und der weiters ein Qualitätskriterium für die vom Temperatursensor (5) gemessene Temperatur des Gases und auf gleicher Basis ein Qualitätskriterium für die aus der Laufzeit der Schallsignale ermittelte Temperatur bestimmt und die Werte beider Qualitätskriterien miteinander vergleicht.3. Ultrasonic gas flow sensor, comprising a gas flowed through the measuring tube (1) with at least one transmitting transducer (2) for generating sound and at least one receiving transducer (3) for receiving the temporally transient sound signals and a transmission, reception and evaluation -Electronics (4), characterized in that at least one temperature sensor (5) is provided for the measurement of the temperature of the gas and connected to the transmitter (4), wherein in the transmitter (4) an evaluation algorithm is implemented, which from the running time the sound signals determines the gas temperature and further determines a quality criterion for the temperature of the gas measured by the temperature sensor (5) and on the same basis a quality criterion for the temperature determined from the transit time of the sound signals and compares the values of both quality criteria. 4. Gasdurchflusssensor nach Anspruch 1, dadurch gekennzeichnet, dass als Qualitätskriterium das Signal/Rausch-Verhältnis herangezogen wird.4. Gas flow sensor according to claim 1, characterized in that is used as a quality criterion, the signal / noise ratio. 5. Gasdurchflusssensor nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zumindest ein weiterer Temperatursensor (6) für die Messung der Temperatur der Wand des Messrohres (1) vorgesehen und mit der Auswerteelektronik (4) verbunden ist.5. Gas flow sensor according to one of claims 1 to 4, characterized in that at least one further temperature sensor (6) for measuring the temperature of the wall of the measuring tube (1) is provided and connected to the evaluation electronics (4). 6. Gasdurchflusssensor nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass eine Einrichtung (8) zur Ermittlung der Gaszusammensetzung vorgesehen ist, insbesondere eine Lambda-Sonde.6. Gas flow sensor according to one of claims 1 to 5, characterized in that a device (8) is provided for determining the gas composition, in particular a lambda probe. 7. Vorrichtung zur Messung von Abgas-Strömungen von Verbrennungskraftmaschinen, dadurch gekennzeichnet, dass in den Abgasstrang der Verbrennungskraftmaschine ein Gasdurchflusssensor gemäß einem der Ansprüche 1 bis 6 eingebaut ist.7. A device for measuring exhaust gas flows of internal combustion engines, characterized in that in the exhaust line of the internal combustion engine, a gas flow sensor according to one of claims 1 to 6 is installed. 8. Verfahren zur Ermittlung des Durchflusses von Gasen, umfassend die Ermittlung der mittleren Strömungsgeschwindigkeit des Gases und weiter der strömenden Gasmenge aus der Laufzeit von zwei Schallsignalen zwischen Sender und Empfänger mit hoher zeitlicher Auflösung ermittelt wird, dadurch gekennzeichnet, dass die Temperatur des Gases bei bekannter Strömungsgeschwindigkeit aus der Laufzeit der Schallsignale ermittelt wird, dass die Temperatur des Gases unabhängig davon mit einer weiteren Messmethode ermittelt wird, und dass beide Temperaturwerte miteinander verglichen werden.8. A method for determining the flow of gases, comprising determining the average flow velocity of the gas and further the flowing gas quantity from the transit time of two sound signals between transmitter and receiver with high temporal resolution is determined, characterized in that the temperature of the gas at a known Flow rate is determined from the duration of the sound signals that the temperature of the gas is determined independently with a further measurement method, and that both temperature values are compared. 9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die mit der weiteren Messmethode ermittelte Temperatur des Gases mit einer Temperatur verglichen wird, die bei Strömungsgeschwindigkeit gleich Null aus der Laufzeit der Schallsignale ermittelt wurde.9. The method according to claim 8, characterized in that the determined with the further measurement method temperature of the gas is compared with a temperature which was determined at zero flow rate from the duration of the sound signals. 10. Verfahren nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass die Temperaturmessung und damit die Durchflussmessung aus der Bestimmung der Laufzeiten der Schallsignale durch Vergleich mit der mittels der weiteren Messmethode ermittelten Temperatur kalibriert wird. 5/11 österreichisches Patentamt AT 10 959 U2 2010-01-1510. The method according to claim 8 or 9, characterized in that the temperature measurement and thus the flow measurement from the determination of the transit times of the sound signals is calibrated by comparison with the temperature determined by means of the further measurement method. 5/11 Austrian Patent Office AT 10 959 U2 2010-01-15 11. Verfahren nach einem der Ansprüche 8 bis 10, dadurch gekennzeichnet, dass aus der Laufzeit der Schallsignale ein Wert für den Durchfluss berechnet und dieser zumindest mittels der Temperatur des Gases korrigiert wird.11. The method according to any one of claims 8 to 10, characterized in that calculated from the duration of the sound signals, a value for the flow and this is corrected at least by means of the temperature of the gas. 12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, dass der aus der Laufzeit der Schallsignale ermittelte Wert für den Durchfluss des Gases in Abhängigkeit von der Temperaturdifferenz der charakteristischen Temperatur des Gases und der Temperatur der Wand des Messrohres korrigiert wird.12. The method according to claim 11, characterized in that the determined from the running time of the sound signals value for the flow of the gas in response to the temperature difference of the characteristic temperature of the gas and the temperature of the wall of the measuring tube is corrected. 13. Verfahren zur Ermittlung des Durchflusses von Gasen, umfassend die Ermittlung der mittleren Strömungsgeschwindigkeit des Gases und weiter der strömenden Gasmenge aus der Laufzeit von zwei Schallsignalen zwischen Sender und Empfänger mit hoher zeitlicher Auflösung ermittelt wird, dadurch gekennzeichnet, dass die Temperatur des Gases bei bekannter Strömungsgeschwindigkeit aus der Laufzeit der Schallsignale ermittelt wird, dass die Temperatur des Gases unabhängig davon mit einer weiteren Messmethode ermittelt wird, und dass ein Qualitätskriterium für die Messwerte beider Methoden bestimmt und die Werte beider Qualitätskriterien miteinander verglichen werden.13. A method for determining the flow of gases, comprising determining the average flow velocity of the gas and further the flowing gas amount from the running time of two sound signals between the transmitter and receiver with high temporal resolution is determined, characterized in that the temperature of the gas at a known Flow rate from the running time of the sound signals is determined that the temperature of the gas is determined independently with a further measurement method, and that a quality criterion for the measured values of both methods determined and the values of both quality criteria are compared. 14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, dass als Qualitätskriterium das Signal/Rausch-Verhältnis der Werte beider Messmethoden ermittelt wird. Hierzu 5 Blatt Zeichnungen 6/1114. The method according to claim 13, characterized in that the signal / noise ratio of the values of both measuring methods is determined as a quality criterion. For this 5 sheets drawings 6/11
AT0055109U 2009-09-03 2009-09-03 ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES AT10959U3 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AT0055109U AT10959U3 (en) 2009-09-03 2009-09-03 ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES
DE102010035859A DE102010035859A1 (en) 2009-09-03 2010-08-30 Ultrasonic gas flow sensor and method for determining the flow of gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT0055109U AT10959U3 (en) 2009-09-03 2009-09-03 ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES

Publications (2)

Publication Number Publication Date
AT10959U2 true AT10959U2 (en) 2010-01-15
AT10959U3 AT10959U3 (en) 2010-06-15

Family

ID=41260062

Family Applications (1)

Application Number Title Priority Date Filing Date
AT0055109U AT10959U3 (en) 2009-09-03 2009-09-03 ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES

Country Status (2)

Country Link
AT (1) AT10959U3 (en)
DE (1) DE102010035859A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3139142A1 (en) * 2015-09-04 2017-03-08 Ceres Intellectual Property Company Limited Temperature measuring method

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8974114B2 (en) * 2012-05-02 2015-03-10 Daniel Measurement And Control, Inc. Temperature verification for ultrasonic flow meters
DE102012104042B4 (en) 2012-05-09 2021-09-16 Endress + Hauser Flowtec Ag Method for monitoring the operating status of an ultrasonic transducer in an ultrasonic flow meter
US9310237B2 (en) * 2012-09-07 2016-04-12 Daniel Measurement And Control, Inc. Ultrasonic flow metering using compensated computed temperature
US9335194B2 (en) 2013-09-16 2016-05-10 Agena A/S System or a method for measuring flow of fluid or gas
DE102014009581A1 (en) * 2014-07-01 2016-01-07 Krohne Messtechnik Gmbh Ultrasonic flowmeter and method for operating an ultrasonic flowmeter
FI128408B (en) 2017-07-07 2020-04-30 Flaekt Woods Ab Equipment and method for measuring an airflow
DE102017219573B4 (en) * 2017-11-03 2021-11-11 Cisma Solutions Aps Exhaust cover with sound source
CN109991441B (en) * 2019-05-06 2021-05-18 南京俊禄科技有限公司 Automatic calibration method for wind direction and anemometer
DE102021101256A1 (en) * 2021-01-21 2022-07-21 Krohne Ag Method for calibrating a temperature measuring unit based on ultrasonic measurement, method for measuring the temperature of a medium, temperature measuring unit and ultrasonic flowmeter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS629223A (en) * 1985-07-08 1987-01-17 Kawasaki Steel Corp Air flow rate measuring method using ultrasonic wave
TW295258U (en) * 1992-10-06 1997-01-01 Caldon Inc Apparatus for determining fluid flow
DE102005038599A1 (en) * 2005-08-16 2007-02-22 Robert Bosch Gmbh Ultrasonic measuring unit with integrated moisture detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3139142A1 (en) * 2015-09-04 2017-03-08 Ceres Intellectual Property Company Limited Temperature measuring method
US10608269B2 (en) 2015-09-04 2020-03-31 Ceres Intellectual Property Company Limited Temperature measuring method

Also Published As

Publication number Publication date
AT10959U3 (en) 2010-06-15
DE102010035859A1 (en) 2011-03-31

Similar Documents

Publication Publication Date Title
AT10959U2 (en) ULTRASONIC GAS FLOW SENSOR AND METHOD FOR DETERMINING THE FLOW OF GASES
EP1498700A3 (en) Ultrasonic gas flow sensor and device for measuring exhaust gas flows of internal combustion engines and method for determining the flow rate of gases
DE102005023874B4 (en) Portable vehicle exhaust gas flow sensor and corresponding method
DE102005059062B4 (en) Apparatus for determining a mass flow
US7934432B2 (en) Method for measuring the run time of an ultrasonic pulse in the determination of the flow velocity of a gas in a breathing gas volume flow sensor
EP2035821B1 (en) Use of an apparatus in a production facility for biogas and method for the ultrasonic determination of the concentrations of components in a biogas mixture
DE102010040396A1 (en) Flow meter for detecting a property of a fluid medium
US8234933B2 (en) Ultrasonic meter for determining physical quantity of a fluid based on a determined plurality of correlation coefficients
CN106932040B (en) A kind of metering method of gas flow
DE102004061404A1 (en) Ultrasonic flow meter and method for flow measurement by means of ultrasound
US20100288055A1 (en) Transit time correction in a flow sensor
CN106706056B (en) A kind of compensation method of heavy caliber ultrasonic water meter flow measurement
DE12833299T1 (en) System and method for combining adjacent flowmeters
CN101836090A (en) Triple redundancy vortex flowmeter system
KR101602031B1 (en) Method for determining the flow rate of fluids using the ultrasonic transit-time method
EP2877816B1 (en) Method and apparatus for operating an acoustic measuring apparatus
US20140025317A1 (en) Pressure guiding tube blockage diagnosing device and blockage diagnosing method
DE102017209080A1 (en) Method for operating an internal combustion engine device, internal combustion engine device and SCR control device
EP2739943A1 (en) Method for determining the flow rate using ultrasound
CN105486429B (en) A kind of ultrasonic calorimeter based on filtering algorithm
CN115388965A (en) Measurement algorithm of gas ultrasonic flow sensor
DE102015203636B3 (en) A system and method for determining a local temperature of exhaust gas flowing in an exhaust conduit
DE102015120636A1 (en) Method for determining a property of a hydrocarbon mixture and ultrasonic flowmeter
DE102008054257A1 (en) Method for determining flow velocity of respiratory gas, involves determining two ultrasonic run times and path lengths in gas with common velocity of sound
DE102018205296A1 (en) Apparatus for ultrasonic measurement of the flow of a fluid in a measuring channel, which achieves a weakening of the parasitic signals

Legal Events

Date Code Title Description
HA9K Mention of the inventor

Inventor name: HOHENBERG GUENTER DR., GRAZ (ST); HENZINGER RONALD

MM01 Lapse because of not paying annual fees

Effective date: 20150930