Hostname: page-component-76fb5796d-zzh7m Total loading time: 0 Render date: 2024-04-26T04:27:15.305Z Has data issue: false hasContentIssue false
  • English
  • Français

Electronic Acoustic Sensor

Published online by Cambridge University Press:  01 February 2011

Vivek Bharti  and
Fred L. DeRoos
Vivek Bharti
Affiliation:
vbharti@mmm.com, 3M Center, Corporate Research Materials Laboratory, 3M Center, 201-1W-28, Saint Paul, MN, 55144, United States
Fred L. DeRoos
Affiliation:
flderoos@MMM.COM, 3M Center, Corporate Research Analytical Laboratory, United States
Get access

Abstract

The Stethoscope (acoustic sensor) is a fundamental tool for the diagnosis of diseases and conditions of the cardiovascular (CV) system. It serves as the most commonly employed technique for diagnosis of such diseases and conditions in primary health care and in circumstances where sophisticated medical equipment is not available, such as remote areas. The piezoelectric sensor was used as an acoustic sensor. The sensitivity of the sensor was improved more than 20 times with our new design. The signal-to-noise ratio was further improved by using unique sensor housing and by using an electronic amplifier in the differential mode.

Keywords

sensoracousticpiezoelectric
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 889: Symposium W – Electroresponsive Polymers and Their Applications , 2005 , 0889-W01-11
Copyright
Copyright © Materials Research Society 2006

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Barrett, Michael J., Lacey, Carolyn S., Sekara, Amy E., Linden, Erica A. and Gracely, Edward J., Chest, 126, 470 (2004).Google Scholar
2. Syed, Z. H.., Guttag, , Levine, R. A., Nesta, F., and Curtis, D., patent no. US2004/0260188A1, published Dec. 23, 2004.Google Scholar
3. O'Connor, Joseph J. et al. , The New England Journal of Medicine, 318, 1611 (1988).Google Scholar
4. Mangione, S., and Nieman, L. Z., J. Amer. Med. Assoc., 278, 717 (1997).Google Scholar
5. Mangione, S., Nieman, L. Z., Gracely, E., and Kaye, D., Annals of Internal Medicine, 119, 47 (1993).Google Scholar
6. Woywodt, A., Hofer, M., Pilz, B., Schneider, W., Dietz, R., and Luft, Friedrich C., Arch Intern. Med, 159, 2477 (1999).Google Scholar
7. Issenberg, B. S., McGaghie, W. C., Hart, I. R., Mayer, J. W., Felner, J. M., Petrusa, E.R., Waug, R. A., Brown, D. D., Safford, R. R., Ira, H., David, L., and Ewy, G. A., J. Amer. Med. Assoc., 282, 861 (1999).Google Scholar
8. Woywodt, A., Herrmann, A., Kielstein, J. T., Haller, H., Haubitz, M., and Purnhagen, H., Postgrad Med J., 80, 355 (2004).Google Scholar
9. Dahl, L. B., Hasvold, P., Arild, E., and Hasvold, T., Arch. Dis Child, 87, 297 (2002).Google Scholar