Full Content is available to subscribers

Subscribe/Learn More  >

Modeling, Validation, and Vibration Reduction in an Electronic Stethoscope

[+] Author Affiliations
Garrett Nelson, Rajesh Rajamani, Arthur Erdman

University of Minnesota, Minneapolis, MN

Paper No. DSCC2014-6197, pp. V003T46A005; 8 pages
  • ASME 2014 Dynamic Systems and Control Conference
  • Volume 3: Industrial Applications; Modeling for Oil and Gas, Control and Validation, Estimation, and Control of Automotive Systems; Multi-Agent and Networked Systems; Control System Design; Physical Human-Robot Interaction; Rehabilitation Robotics; Sensing and Actuation for Control; Biomedical Systems; Time Delay Systems and Stability; Unmanned Ground and Surface Robotics; Vehicle Motion Controls; Vibration Analysis and Isolation; Vibration and Control for Energy Harvesting; Wind Energy
  • San Antonio, Texas, USA, October 22–24, 2014
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 978-0-7918-4620-9
  • Copyright © 2014 by ASME


This paper focuses on the influence of noise and vibration on auscultation with a digital stethoscope. Two types of vibrations, namely inputs through the patient chest and disturbances from the physician, influence the auscultation signal. The goal of this work is to reduce the influence of disturbances from the physician on the stethoscope’s digital signal without effectively reducing the coupling between the transducer and the patient’s chest.

A multi-DOF rigid body vibration model consisting of discrete connected components is developed for a digital stethoscope. The model is experimentally validated and its parameters identified by using a thorax simulator and vibration shaker. The introduction of vibration isolation so as to reduce the influence of physician noise on the transducer is then pursued. It is shown that directly introducing soft foam vibration isolation between the transducer and the rest of the stethoscope structure leads to a reduction in coupling with the patient’s chest. On the other hand, if the vibration isolation is introduced between the heavy transducer housing above the transducer and the rest of the stethoscope, then vibration isolation from the physician is achieved with a much less reduction in patient coupling. Experimental results are presented to study the influence of the proposed design changes.

Copyright © 2014 by ASME
Topics: Modeling , Vibration



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In