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Sensors 2015, 15(1), 1479-1495; doi:10.3390/s150101479

Chemical Sensor Platform for Non-Invasive Monitoring of Activity and Dehydration

1
Centre of Sensors, Information and Communication Systems, Faculty of Electrical Engineering and Communication, Brno University of Technology, Technická 3058/10, CZ‑61600 Brno, Czech Republic
2
Central European Institute of Technology, Brno University of Technology, Technická 3058/10, CZ‑61600 Brno, Czech Republic
*
Author to whom correspondence should be addressed.
Received: 14 November 2014 / Accepted: 29 December 2014 / Published: 14 January 2015
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Abstract

A non-invasive solution for monitoring of the activity and dehydration of organisms is proposed in the work. For this purpose, a wireless standalone chemical sensor platform using two separate measurement techniques has been developed. The first approach for activity monitoring is based on humidity measurement. Our solution uses new humidity sensor based on a nanostructured TiO2 surface for sweat rate monitoring. The second technique is based on monitoring of potassium concentration in urine. High level of potassium concentration denotes clear occurrence of dehydration. Furthermore, a Wireless Body Area Network (WBAN) was developed for this sensor platform to manage data transfer among devices and the internet. The WBAN coordinator controls the sensor devices and collects and stores the measured data. The collected data is particular to individuals and can be shared with physicians, emergency systems or athletes’ coaches. Long-time monitoring of activity and potassium concentration in urine can help maintain the appropriate water intake of elderly people or athletes and to send warning signals in the case of near dehydration. The created sensor system was calibrated and tested in laboratory and real conditions as well. The measurement results are discussed. View Full-Text
Keywords: sensor; dehydration monitoring; potassium ion selective electrode; data acquisition; humidity; urine; sweat sensor; perspiration monitor sensor; dehydration monitoring; potassium ion selective electrode; data acquisition; humidity; urine; sweat sensor; perspiration monitor
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Solovei, D.; Žák, J.; Majzlíková, P.; Sedláček, J.; Hubálek, J. Chemical Sensor Platform for Non-Invasive Monitoring of Activity and Dehydration. Sensors 2015, 15, 1479-1495.

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