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Critical Performance of a New Breath Alcohol Analyzer for Screening Applications
Hök Instrument AB.ORCID-id: 0000-0003-3286-2572
Hök Instrument AB.
Mälardalens högskola, Akademin för innovation, design och teknik, Inbyggda system.ORCID-id: 0000-0002-5832-5452
2014 (engelsk)Inngår i: Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP), 2014 IEEE Ninth International Conference on, 2014, s. 1-4Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

In screening applications there is a need forimproved breath alcohol analyzers. Accuracy, specificity,usability, and through-put are critical to the device performance. Objective: To characterize the critical performance of a newcontactless breath alcohol analyzer. Methods: The device ischaracterized by measurements using artificial breath gas andhuman subjects. Breath sampling is performed in ambient airusing carbon dioxide as a biomarker. Results: Resolution andinter-individual variation, response time, and specificity wereshown to meet the requirements of industrial standards. Thefeasibility of contactless measurement was demonstrated. Conclusions: The new device exhibits sufficient performance inmoderately diluted breath samples. Further work is underway toreach the objective of unobtrusive breath alcohol analysis.

sted, utgiver, år, opplag, sider
2014. s. 1-4
HSV kategori
Identifikatorer
URN: urn:nbn:se:mdh:diva-29903DOI: 10.1109/ISSNIP.2014.6827626ISI: 000356411200040Scopus ID: 2-s2.0-84903733096ISBN: 978-1-4799-2842-2 (tryckt)OAI: oai:DiVA.org:mdh-29903DiVA, id: diva2:881464
Konferanse
IEEE Ninth International Conference on Intelligent Sensors, Sensor Networks and Information Processing (ISSNIP) Singapore 21-24 April 2014
Tilgjengelig fra: 2015-12-10 Laget: 2015-12-10 Sist oppdatert: 2017-10-04bibliografisk kontrollert
Inngår i avhandling
1. High Performance Breath Analysis
Åpne denne publikasjonen i ny fane eller vindu >>High Performance Breath Analysis
2016 (engelsk)Licentiatavhandling, med artikler (Annet vitenskapelig)
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.

sted, utgiver, år, opplag, sider
Västerås: Mälardalen University, 2016. s. 87
Serie
Mälardalen University Press Licentiate Theses, ISSN 1651-9256 ; 225
HSV kategori
Forskningsprogram
elektronik
Identifikatorer
urn:nbn:se:mdh:diva-29883 (URN)978-91-7485-249-3 (ISBN)
Presentation
2016-01-28, Delta, Mälardalens högskola, Västerås, 09:15 (engelsk)
Opponent
Tilgjengelig fra: 2015-12-11 Laget: 2015-12-09 Sist oppdatert: 2017-01-03bibliografisk kontrollert
2. High performance breath alcohol analysis
Åpne denne publikasjonen i ny fane eller vindu >>High performance breath alcohol analysis
2017 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

Alcohol breath testing on a larger scale will save lives. Alcohol intake affects the human body by significantly longer response time to external stimuli. In demanding situations where the senses need to be on alert a prolonged reaction time can be the difference between life and death, both for the intoxicated subject and for surrounding  individuals.

The aims of this thesis include investigations of a new type of breath alcohol sensor, designed for operation without a mouthpiece, both with regards to sensor performance as well as usability in relation to various breath  alcohol  screening applications.

In many situations where breath alcohol screening is suitable, there is a need for quick and easy use. The instrument should interfere as little as possible with the regular routines and procedures. One such task is driving. To accommodate for these needs in an in-vehicle application, the breath alcohol sensing system must be seamlessly installed in the vehicle and not interfere with the normal behavior of the sober driver. Driving is also a task requiring high level of concentration over a prolonged period of time. In the U.S. alone thousands of lives are annually lost in accidents where the driver was under the influence of  alcohol.  Similar numbers have been recorded for Europe. The potential for a system handling the needs for ease-of-use is huge and may result in successful products.

The results presented within this thesis provide experimental evidence of sufficient sensor performance for screening applications with an instrument operating without a mouthpiece. Smarter calculation methods were also shown to be a feasible path to improved measurement reliability. Important steps towards an even more passive solution for in-vehicle screening is also presented. Experiments showed that given enough time and sensor resolution, passive alcohol detection systems are feasible.

sted, utgiver, år, opplag, sider
Västerås: Malardalen University Press, 2017
Serie
Mälardalen University Press Dissertations, ISSN 1651-4238 ; 240
HSV kategori
Forskningsprogram
elektronik
Identifikatorer
urn:nbn:se:mdh:diva-36634 (URN)978-91-7485-350-6 (ISBN)
Disputas
2017-11-15, Delta, Mälardalens högskola, Västerås, 09:15 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2017-10-04 Laget: 2017-10-04 Sist oppdatert: 2017-10-12bibliografisk kontrollert

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