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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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 Abstract
-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.
 Keywords
deficiency;electro-chemical gas sensor;smartphone;sensor network;bluetooth low energy;
 Language
English
 Cited by
 References
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