Document Detail


Low latency breathing frequency detection and monitoring on a personal computer.
MedLine Citation:
PMID:  21767133     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We demonstrate a low latency respiratory/breathing frequency detection system that is fast (<5 ms), easy to operate, requires no batteries or external power supply and operates fully via computer-standard USB connection. Exercises in controlling ones breathing frequency, usually referred to as paced-breathing exercises, have shown positive effects in treating pulmonary diseases, cardiovascular diseases and stress/anxiety-related disorders. We developed a breathing frequency detection system which uses two pairs of microphones to detect exhalation activity, eliminate noise from the environment and stream the recording data via USB connection to a personal computer. It showed 97.1% reliability (10 subjects) when monitoring breathing activity in non-guided free breathing and 100% reliability (10 subjects) when monitoring breathing activity during interactive paced-breathing exercises. We also evaluated the breathing frequency detection systems noise elimination functionality which showed a reduction of 84.2 dB for stationary (white noise) and a reduction of 79.3 dB for non-stationary (hands clapping) noise.
Authors:
Matevz Leskovsek; Dragomira Ahlin; Rok Cancer; Milan Hosta; Dusan Enova; Nika Pusenjak; Matjaz Bunc
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-7-18
Journal Detail:
Title:  Journal of medical engineering & technology     Volume:  -     ISSN:  1464-522X     ISO Abbreviation:  -     Publication Date:  2011 Jul 
Date Detail:
Created Date:  2011-7-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702125     Medline TA:  J Med Eng Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Faculty of Electrical Engineering, University of Ljubljana , Ljubljana , Slovenia.
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