The Study of Acoustic Source Localization using a Small Microphone Array for Condition Monitoring

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Zhen, Dong ; Gu, Fengshou ; Ball, Andrew (2010)
  • Publisher: University of Huddersfield
  • Subject: TJ | T1

The aim of this research is to investigate microphone array techniques based condition monitoring (CM). In this paper, a cost effective microphone array configured with 4-sensors and data acquisition systems is investigated theoretically and experimentally to evaluate its performance in characterising sound sources in different acoustic environments. Time delay estimation (TDE) is used as a basic tool for calculating the time delay of the sound source arrived at each of the 4-sensors and hence the\ud localization parameters of the sound source such as azimuth, elevation and distance can be\ud calculated from the TDE information. Results are presented for experimental studies both in a semianechoic chamber, an outdoor environment and an enclosure. Comparing the results obtained under\ud different conditions, it has confirmed that the microphone array system can catch the location of the main sound source and also has ability to track and give the azimuthal trajectory of a moving target with high degree of accuracy.
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    13 references, page 1 of 2

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    6. Li, W., Gu, F. and Ball, A.D., A Study of the Noise from Diesel Engines Using Independent Component Analysis, Mechanical Systems and Signal Processing, Vol.15, No. 6, pp.1165-1184, 2001.

    7. B. Payne, A.D. Ball, F. Gu and W. Li , (Invited Paper) A Head-to-head Assessment of the Relative Fault Detection and Diagnosis Capabilities of Conventional Vibration and Airborne Acoustic Monitoring, COMADEM 2000, Texas, USA, pp 233-242, 2000.

    8. Albarbar, A., Gennish, R.; Gu, F.; Ball, A. Lubricating oil condition monitoring using vibration and air-borne acoustic measurements, Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004, v 3, Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis - 2004, 2004, p 205-209.

    9. S. A. Al-Hashmi, S. Al-Hashmi, F. Gu, A.D. Ball, T. Fen, and K. , “A Comparison of the Cavitation Monitoring of a Centrifugal Pump Using Vibration and Acoustic Methods”, Proceedings of the 17th International Congress on Condition Monitoring and Diagnostic Engineering Management, 2004, Cambridge UK August 2004.

    10. A. Albarbar, F. Gu, A.D. Ball, R. Gennish, M, Ali, G. Harris, Diesel Engine Injector Condition Monitoring Using Air-borne Acoustics Measurements, Proceedings of 18th International Congress on Condition Monitoring and Diagnostic Engineering Management (COMADEM 2005), pp 143-152, Cranfield University, U.K.

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