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Smartphone-based O2 Deficiency Monitoring Device
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 Title & Authors
Smartphone-based O2 Deficiency Monitoring Device
Loh, Byoung Gook;
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-deficiency related accidents occur every year and the most effective way to prevent them is to measure concentration in air with a properly-calibrated monitoring device before entering low- areas. An electro-chemical sensor, Texas Instrument gas platform, and iPhone are used to construct a smartphone-based monitoring device. The smartphone based measuring approach offers advantages of small size, accessibility, internet-connectivity, and programmability in comparison to conventional measuring devices. Multiple gas sensors can be conveniently interfaced to single smartphone, allowing for creating a network of gas sensors distributed across workplaces and remote monitoring via existing mobile communication network. To check proper function of the monitoring device the sensor was exposed to shallow and deep human breaths. The readings decreased immediately after being exposed to exhalation and recovered during inhalation to a calibrated level of 20.9%. When readings decreased below a preset warning value of 19.5%, a low warning was successfully activated on the smartphone.
deficiency;electro-chemical gas sensor;smartphone;sensor network;bluetooth low energy;
 Cited by
H. Y. Kim et. al., "A Study on the Effects of Working Environment (Oxygen Concentration, Harmful Gas, etc.) on Physiology and Motility", Korea Occupational Safety and Health Research Institute, Publication No. 2008-128-1455, pp.1-4, 2008.

National Institute for Occupational Safety and Health (USA), Criteria for a Recommended Standard Working in Confined Spaces, Publication No. 80-106, pp.3-5, 1979.

National Institute for Occupational Safety and Health (USA), A Guide to Safety in Confined Spaces, Publication No. 87-113, pp.1-10, 1987.

OSHA 1910.146, Permit-required Confined Spaces, American Operation Safety and Health Standard, 1993.

Workers' Compensation Board of British Columbia, Hazards of Confined Space, pp.1-6, 2006.

Workers' Compensation Board of British Columbia, No Warning with Deadly Lack of Oxygen in Air, 2006.

K Rogers, The Respiratory System, The Britanica Eduatinal Publishing Group, pp.60-84, 2010.

T. Watanabe and M. Morita, "Asphyxia due to $O_2$ Deficiency by Gaseous Substances," Forensic Science International, Vol. 96, pp. 47-59, 1998. crossref(new window)

AlphaSense, O2-A2 Oxygen Sensor, Publication No. O2-A2/APR13, 2013.

Texas_Instrument, Gas Sensor Platform Reference Design, 2013.

N. McManus, "Oxygen: Health Effects and Regulatory Limits Part I: Physiological and Toxicological Effects of Oxygen Deficiency and Enrichment", NorthWest Occupational Health and Safety(Canada), 2009.