NDLI: Acoustic sensor pad for physiological monitoring

Content Provider	IEEE Xplore Digital Library
Author	Scanlon, M.V.
Copyright Year	1997
Description	Author affiliation: Army Res. Lab., Adelphi, MD, USA (Scanlon, M.V.)
Abstract	The Army Research Laboratory has developed an acoustic sensor pad technology that is useful for combat casualty care and soldier performance monitoring. Heartbeats, breaths, motion, and other physiological sounds relating to injured and uninjured soldiers can be detected, transmitted, and analyzed for diagnostic purposes. The acoustic sensor pad is a fluid-filled bladder with a hydrophone that couples well to the soldier's torso. Since the human body is mostly water, the pad acts as a fluid extension of the body to form an acoustical conduit to a sensitive hydrophone within the pad that detects body sounds. The sensing pad can be a hand-held version for the field medic or doctor, or a torso-sized pad incorporated into casualty transport hardware such as litters or gurneys. Acoustic analysis of the sensor-pad output can provide amplitude, phase, frequency, duration, rate, and correlative information that may be useful for medical diagnosis, patient care, and research. Data collected with prototype devices show excellent signal-to-noise ratios for heart and breath sounds; such devices could be used in the field to detect conditions such as irregular heartbeats, cardiac distress, obstructed airways, sucking chest wounds, fluid in the lungs, or other respiratory and circulatory emergencies. Joint time-frequency Fourier analysis of sensor output shows that human cardiopulmonary function contains infrasonic (sounds below 20 Hz) signals, which cannot be beard with human ears, but may be useful for medical diagnostics. If soldiers were equipped with small monitoring sensor pads with transmit capability to carry in contact with the torso, squad performance level could be assessed, or those missing in action could be medically interrogated from a remote location for heart and breathing sounds. The technology can also be used to monitor operators of vehicles or aircraft, and initiate appropriate safety actions in the event of sudden incapacitation resulting from weapons fire, heart attack, or blackout.
Starting Page	747
Ending Page	750
File Size	660363
Page Count	4
File Format	PDF
ISBN	0780342623
ISSN	1094687X
DOI	10.1109/IEMBS.1997.757744
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-10-30
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Acoustic sensors Biomedical monitoring Acoustic signal detection Humans Sonar equipment Torso Medical diagnostic imaging Medical diagnosis Heart Remote monitoring
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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