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Enhancement of remotely controlled laboratory for Active Noise Control and acoustic experiments
Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing.
Blekinge Institute of Technology, Faculty of Engineering, Department of Applied Signal Processing.
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2014 (English)Conference paper (Refereed)
Abstract [en]

The latest important developments in the remotely controlled Active Noise Control (ANC) and Acoustics laboratory at Blekinge Institute of Technology (BTH), Sweden, are introduced. The remotely controlled laboratory is based on the Virtual Instruments Systems in Reality (VISIR) concept, and concerns multi-channel measurement and control of the sound field in a heating ventilation and air conditioning (HVAC) duct. Originally the ventilation duct was equipped with a fixed number of microphones at fixed spatial locations in the duct. A microphone positioning system has been designed and implemented. It enables control of the spatial positions of a number of microphones inside the HVAC duct using a suitable web interface for controlling stepper motors via a National Instruments (NI) PXI system. With the new developments, the spatial number of selectable positions for the microphones have been extended substantially. The new microphone positioning control system is presented and to enhance the user interaction with the laboratory equipment, an audio and visual system is also proposed.

Place, publisher, year, edition, pages
IEEE , 2014. 285-290 p.
Series
International Conference on Remote Engineering and Virtual Instrumentation, ISSN 2330-9997
Keyword [en]
Acoustics, Active noise control, Remote control laboratories, VISIR
National Category
Signal Processing
Identifiers
URN: urn:nbn:se:bth-6546DOI: 10.1109/REV.2014.6784276ISI: 000353337400058ISBN: 978-1-4799-2024-2 (print)OAI: oai:DiVA.org:bth-6546DiVA: diva2:834064
Conference
International Conference on Remote Engineering and Virtual Instrumentation (REV), Porto
Available from: 2014-11-20 Created: 2014-11-20 Last updated: 2017-01-31Bibliographically approved
In thesis
1. Measurements, Analysis Techniques and Experiments in Sound and Vibration: Applied to Operational MRI Scanners and in Remote Laboratories.
Open this publication in new window or tab >>Measurements, Analysis Techniques and Experiments in Sound and Vibration: Applied to Operational MRI Scanners and in Remote Laboratories.
2017 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

High quality noise and vibration measurements outside of a laboratory environment on real life structures and applications are not trivial. True boundary and operating conditions enforce unique challenges on the measurements. Measurements in hazardous situations such as high magnetic fields, and high temperature environments, etc., where ordinary measurement equipment and methods may not be employed, require further precautions. Post measurements objectives such as analysis, design and strategic decisions, e.g., control, rely heavily on the quality and integrity of the measurements (data).

The quality of the experimental data is highly correlated with the on-field expertise. Practical or hands-on experience with measurements can be imparted to prospective students, researchers and technicians in the form of laboratory experiments involving real equipment and practical applications. However, achieving expertise in the field of sound and vibration measurements in general and their active control in particular is a time consuming and expensive process. Consequently most institutions can only afford a single setup, resulting in the compromise of the quality of expertise.

In this thesis, the challenges in the field of sound and vibration measurements in high magnetic field are addressed. The analysis and measurement of vibration transferred from an operational magnetic resonance imaging (MRI) scanner to adjacent floors is taken as an example. Improvised experimental measurement methods and custom-made frequency analysis techniques are proposed in order to address the challenges and study the vibration transfer. The methods may be extended to other operational industrial machinery and hazardous environments. To encourage and develop expertise in the field of acoustic/vibration measurements and active noise control on practical test beds, remotely controlled laboratory setups are introduced. The developed laboratory setup, which is accessed and controlled via the Internet, is the first of its kind in the active noise control and acoustic measurements area. The laboratory setup can be shared and utilized 24/7 globally, thus reducing the associated costs and eliminating time restrictions.

Place, publisher, year, edition, pages
Blekinge Tekniska Högskola, 2017. 251 p.
Series
Blekinge Institute of Technology Doctoral Dissertation Series, ISSN 1653-2090 ; 3
Keyword
Active Noise Control, Remote Laboratories, Sound and Vibration Measurements, Vibration Analysis, Vibration Transmission
National Category
Signal Processing
Identifiers
urn:nbn:se:bth-13821 (URN)978-91-7295-336-9 (ISBN)
Public defence
2017-02-22, 10:00 (English)
Opponent
Supervisors
Available from: 2017-02-01 Created: 2017-01-24 Last updated: 2017-03-08Bibliographically approved

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Khan, ImranGustavsson, IngvarHåkansson, Lars
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CiteExportLink to record
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Citation style
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