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J. Low Power Electron. Appl. 2017, 7(4), 26; doi:10.3390/jlpea7040026

Inkjet Printed Fully-Passive Body-Worn Wireless Sensors for Smart and Connected Community (SCC)

1
Electrical and Computer Engineering, Herff College of Engineering, University of Memphis, Memphis, TN 38152, USA
2
Division of Social and Behavioral Sciences, School of Public Health, University of Memphis, Memphis, TN 38152, USA
3
Henderson County Community Hospital, Lexington, TN 38351, USA
4
Baptist Minor Medical Center, Memphis, TN 38111, USA
*
Author to whom correspondence should be addressed.
Received: 30 September 2017 / Revised: 30 October 2017 / Accepted: 4 November 2017 / Published: 9 November 2017
(This article belongs to the Special Issue Low-Power Electronic Circuits for Monolithic Smart Wireless Sensors)
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Abstract

Future Smart and Connected Communities (SCC) will utilize distributed sensors and embedded computing to seamlessly generate meaningful data that can assist individuals, communities, and society with interlocking physical, social, behavioral, economic, and infrastructural interaction. SCC will require newer technologies for seamless and unobtrusive sensing and computation in natural settings. This work presents a new technology for health monitoring with low-cost body-worn disposable fully passive electronic sensors, along with a scanner, smartphone app, and web-server for a complete smart sensor system framework. The novel wireless resistive analog passive (WRAP) sensors are printed using an inkjet printing (IJP) technique on paper with silver inks (Novacentrix Ag B40, sheet resistance of 21 mΩ/sq) and incorporate a few discrete surface mounted electronic components (overall thickness of <1 mm). These zero-power flexible sensors are powered through a wireless inductive link from a low-power scanner (500 mW during scanning burst of 100 ms) by amplitude modulation at the carrier signal of 13.56 MHz. While development of various WRAP sensors is ongoing, this paper describes development of a WRAP temperature sensor in detail as an illustration. The prototypes were functionally verified at various temperatures with energy consumption of as low as 50 mJ per scan. The data is analyzed with a smartphone app that computes severity (Events-of-Interest, or EoI) using a real-time algorithm. The severity can then be anonymously shared with a custom web-server, and visualized either in temporal or spatial domains. This research aims to reduce ER visits of patients by enabling self-monitoring, thereby improving community health for SSC. View Full-Text
Keywords: body-worn sensor; electronic patch sensor; passive sensor; inkjet printed electronic circuit; mHealth; smart and connected community; smart health; wearables; wireless sensor body-worn sensor; electronic patch sensor; passive sensor; inkjet printed electronic circuit; mHealth; smart and connected community; smart health; wearables; wireless sensor
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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

Morshed, B.I.; Harmon, B.; Zaman, M.S.; Rahman, M.J.; Afroz, S.; Rahman, M. Inkjet Printed Fully-Passive Body-Worn Wireless Sensors for Smart and Connected Community (SCC). J. Low Power Electron. Appl. 2017, 7, 26.

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J. Low Power Electron. Appl. EISSN 2079-9268 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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