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Development and Evaluation of Algorithms for Breath Alcohol Screening
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems. Hök Instrument AB, Sweden.ORCID iD: 0000-0003-3286-2572
Hök Instrument AB, Sweden.
Mälardalen University, School of Innovation, Design and Engineering, Embedded Systems.ORCID iD: 0000-0002-5832-5452
2016 (English)In: Sensors, ISSN 1424-8220, E-ISSN 1424-8220, Vol. 16, no 4, 469Article in journal (Other academic) Published
Abstract [en]

Breath alcohol screening is important for traffic safety, access control and other areas of health promotion. A family of sensor devices useful for these purposes is being developed and evaluated. This paper is focusing on algorithms for the determination of breath alcohol concentration in diluted breath samples using carbon dioxide to compensate for the dilution. The examined algorithms make use of signal averaging, weighting and personalization to reduce estimation errors. Evaluation has been performed by using data from a previously conducted human study. It is concluded that these features in combination will significantly reduce the random error compared to the signal averaging algorithm taken alone.

Place, publisher, year, edition, pages
2016. Vol. 16, no 4, 469
National Category
Medical Engineering
Identifiers
URN: urn:nbn:se:mdh:diva-29905DOI: 10.3390/s16040469ISI: 000375153700049Scopus ID: 2-s2.0-84962424447OAI: oai:DiVA.org:mdh-29905DiVA: diva2:881496
Available from: 2015-12-10 Created: 2015-12-10 Last updated: 2016-08-25Bibliographically approved
In thesis
1. High Performance Breath Analysis
Open this publication in new window or tab >>High Performance Breath Analysis
2016 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Alcohol breath testing on a larger scale will save lives. Alcohol abuse is a major contributor to death and disease. Alcohol intake affects the human body by significantly longer response time to external stimuli. In situations where the senses need to be on alert this delay can be the difference between life and death. To make the alcohol breath test more available in everyday use, the mouthpiece has been removed. Instead, the exhaled alcohol is measured directly in a diluted sample. The dilution can be accounted for by simultaneous measurement of an endogenous tracer gas. Because of the lack of a mouthpiece several additional factors influence the alcohol measurement, e.g. the obvious lower abundance of analyte gas, shorter time of analysis and physiological aspects of the tracer gas. My studies include sensor development and validation through laboratory experiments as well as human subject studies. Several sensor parameters are crucial for the functionality of the alcohol detection system and are in need of careful investigation. Human behaviour and physiology also needs further understanding. A better understanding of the system provides vital knowledge for the design of smarter algorithms. Planning, conducting and evaluation of these studies lie within the scope of the licentiate thesis.

Place, publisher, year, edition, pages
Västerås: Mälardalen University, 2016. 87 p.
Series
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 225
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electronics
Identifiers
urn:nbn:se:mdh:diva-29883 (URN)978-91-7485-249-3 (ISBN)
Presentation
2016-01-28, Delta, Mälardalens högskola, Västerås, 09:15 (English)
Opponent
Available from: 2015-12-11 Created: 2015-12-09 Last updated: 2017-01-03Bibliographically approved

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