Modeling of temperature dependency of structural waves in an ultrasonic flow measurement system
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Matthias Bächle
Matthias Bächle obtained his bachelor’s and master’s degree in Electrical Engineering/Information Technology at the Karlsruhe Institute of Technology, Germany in 2014 and 2016, respectively. He is currently working as a research associate at the Institute of Industrial Information Technology (IIIT) at the Karlsruhe Institute of Technology, Germany, where he is pursuing his Ph.D. degree. His current research interests include signal processing techniques and their application to flow measurement using transit time of ultrasonic pulses.
and
Fernando Puente León
Fernando Puente León is a Professor with the Department of Electrical Engineering and Information Technology at Karlsruhe Institute of Technology, Germany, where he heads the Institute of Industrial Information Technology (IIIT). From 2001 to 2002, he was with DS2, Valencia, Spain. From 2002 to 2003, he was a Postdoctoral Research Associate with the Institut für Mess- und Regelungstechnik, University of Karlsruhe. From 2003 to 2008, he was a Professor with the Department of Electrical Engineering and Information Technology, Technische Universität München, Germany. His research interests include image processing, automated visual inspection, information fusion, measurement technology, pattern recognition, and communications.
Abstract
Structural waves transmitted solely through the pipe wall influence the accuracy in a clamp-on ultrasonic flow measurement system because of the superposition with the signals of interest. To improve the measurement against temperature variations, an algorithmic compensation of the structural waves using a temperature model is required. This paper proposes a temperature model for structural waves, using the Matching Pursuit method. In the first section, a sparse signal representation is presented to approximate the structural wave signals. The resulting signal coefficients are used to describe the temperature dependency in a linear model. The method is validated using measurements of structural waves in a circular pipe over a temperature range between
Zusammenfassung
Strukturschallwellen, welche sich nur über die Rohrwand ausbreiten, beeinflussen aufgrund der Überlagerung mit dem Nutzsignal die Genauigkeit in einem Clamp-On-Durchflussmesssystem. Um die Messung robust gegenüber Temperaturänderungen zu machen, wird eine algorithmische Kompensation der Strukturschallwellen mithilfe eines Temperaturmodells benötigt. In dieser Arbeit wird ein Temperaturmodell für Strukturschallwellen basierend auf der Matching-Pursuit-Methode vorgestellt. Im ersten Abschnitt wird eine geeignete Signaldarstellung eingeführt, um die Strukturschallwellen mit möglichst wenig Koeffizienten zu approximieren. Die Signalkoeffizienten werden verwendet, um die Temperaturabhängigkeit durch ein lineares Modell zu beschreiben. Die Methode wird anhand von Strukturschallmessungen an einem Rohr über einem Temperaturbereich von
About the authors
Matthias Bächle obtained his bachelor’s and master’s degree in Electrical Engineering/Information Technology at the Karlsruhe Institute of Technology, Germany in 2014 and 2016, respectively. He is currently working as a research associate at the Institute of Industrial Information Technology (IIIT) at the Karlsruhe Institute of Technology, Germany, where he is pursuing his Ph.D. degree. His current research interests include signal processing techniques and their application to flow measurement using transit time of ultrasonic pulses.
Fernando Puente León is a Professor with the Department of Electrical Engineering and Information Technology at Karlsruhe Institute of Technology, Germany, where he heads the Institute of Industrial Information Technology (IIIT). From 2001 to 2002, he was with DS2, Valencia, Spain. From 2002 to 2003, he was a Postdoctoral Research Associate with the Institut für Mess- und Regelungstechnik, University of Karlsruhe. From 2003 to 2008, he was a Professor with the Department of Electrical Engineering and Information Technology, Technische Universität München, Germany. His research interests include image processing, automated visual inspection, information fusion, measurement technology, pattern recognition, and communications.
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Articles in the same Issue
- Frontmatter
- Editorial
- 4. Workshop „Messtechnische Anwendungen von Ultraschall“ 2018 im Kloster Drübeck
- Beiträge
- An inverse approach to the characterisation of material parameters of piezoelectric discs with triple-ring-electrodes
- Eindimensionaler phononischer Kristall zur Schallisolierung in Stäben
- Modeling of temperature dependency of structural waves in an ultrasonic flow measurement system
- Nichtinvasive Temperaturüberwachung in Gewebephantomen durch ortsaufgelöste Messung der Longitudinalwellengeschwindigkeit mittels Ultraschall-Annular-Arrays
- Ultraschallbasierte Messung der Strömungsgeschwindigkeit von Flüssigkeiten und Gasen für den Einsatz in Drainageleitungen in Tunneln
- Evaluierung der Sicherheit von Tiefbrunnen durch Ultraschallmessungen
Articles in the same Issue
- Frontmatter
- Editorial
- 4. Workshop „Messtechnische Anwendungen von Ultraschall“ 2018 im Kloster Drübeck
- Beiträge
- An inverse approach to the characterisation of material parameters of piezoelectric discs with triple-ring-electrodes
- Eindimensionaler phononischer Kristall zur Schallisolierung in Stäben
- Modeling of temperature dependency of structural waves in an ultrasonic flow measurement system
- Nichtinvasive Temperaturüberwachung in Gewebephantomen durch ortsaufgelöste Messung der Longitudinalwellengeschwindigkeit mittels Ultraschall-Annular-Arrays
- Ultraschallbasierte Messung der Strömungsgeschwindigkeit von Flüssigkeiten und Gasen für den Einsatz in Drainageleitungen in Tunneln
- Evaluierung der Sicherheit von Tiefbrunnen durch Ultraschallmessungen
