University of Oulu

D. Nguyen, C. Mc Caffrey, O. Silvén and M. Kögler, "Physically Flexible Ultralow-Power Wireless Sensor," in IEEE Transactions on Instrumentation and Measurement, vol. 71, pp. 1-7, 2022, Art no. 9505207, doi: 10.1109/TIM.2022.3164157

Physically flexible ultralow-power wireless sensor

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Author: Nguyen, Dung1; Mc Caffrey, Colm2; Silvén, Olli3;
Organizations: 1VTT Technical Research Centre of Finland, 90570 Oulu, Finland
2Device Concept Laboratory, Huawei Technologies Finland Oy, 00180 Helsinki, Finland
3Center for Machine Vision and Signal Analy- sis, Faculty of Information Technology and Electrical Engineering, University of Oulu, 90570 Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.1 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2022
Publish Date: 2022-04-26


The key challenges of local sensor networks are in supporting high sensor density, information security, physical size, and especially energy efficiency at a level that could eliminate the need for batteries or external power supplies. This article presents a novel scheme that answers all issues at the cost of minor information losses in low data rate applications that tolerate latency. Experimental verification is made using a sensor node implemented on a flexible electronics platform. Lightly encrypted data are transmitted by embedding it into Bluetooth advertising packets, contributing to ultralow-energy wireless power consumption, and theoretically enabling an unlimited number of nodes in the local network. In the experiments, the energy dissipation per transmitted 14-B information packet varied between 19.83 and 105.93 μW depending on the system configuration, while the data loss rates ranged from 7.4% to 0.004%, respectively. As the flexible substrate can be attached to various surfaces, the applications extend from wearable to industrial condition monitoring devices.

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Series: IEEE transactions on instrumentation and measurement
ISSN: 0018-9456
ISSN-E: 1557-9662
ISSN-L: 0018-9456
Volume: 71
Pages: 1 - 7
DOI: 10.1109/TIM.2022.3164157
Type of Publication: A1 Journal article – refereed
Field of Science: 213 Electronic, automation and communications engineering, electronics
113 Computer and information sciences
Funding: This work was supported by the European Union’s Horizon 2020 Research and Innovation Program through the Project Smart and Flexible Energy Supply Platform for Wearable Electronics (Smart2Go) under Grant 825143.
Copyright information: © The Author(s) 2022. This work is licensed under a Creative Commons Attribution 4.0 License. For more information, see