A Wireless Implantable Sensor Design With Subcutaneous Energy Harvesting for Long-Term IoT Healthcare Applications

Implantable biomedical device; Data visualization; Digital storage; Internet of things; Light sources; Low power electronics; Secondary batteries; Silicones; Skin; Solar cell arrays; Solar concentrators; Solar energy; Supercapacitor; Wireless telecommunication systems; Implantable biomedical devices; Neck; Self-powered systems; Solar panels; Wireless communications; Wrist; Energy harvesting

Abstract :

[en] In this paper, a wireless implantable sensor prototype with subcutaneous solar energy harvesting is proposed. To evaluate the performance of a flexible solar panel under skin, ex-vivo experiments are conducted under natural sunlight and artificial light sources. The results show that the solar panel covered by a 3 mm thick porcine flap can output tens of microWatts to a few milliWatts depending on the light conditions. The subcutaneous solar energy harvester is tested on different body parts, which suggests the optimal position for the harvester to implant is between neck and shoulder. A wireless implantable system powered by the subcutaneous energy harvester is presented, which consists of a power management circuit, a temperature sensor, and a Bluetooth low energy module. An application is developed for data visualization on mobile devices, which can be a gateway for future IoT-based healthcare applications. The entire device is embedded in a transparent silicone housing (38 mm × 32 mm × 4 mm), including a 7 mAh rechargeable battery for energy storage. The average power consumption of the implants is about 30 μW in a 10 min operation cycle. With the subcutaneous solar energy harvester, the self-powered operation of the implantable sensor prototype is demonstrated by long-term experimental results. Two worst-case scenarios (no exposure to light and battery depletion) are considered with ex-vivo experiment simulations. © 2018 IEEE.

Disciplines :

Electrical & electronics engineering

Author, co-author :

Wu, T.; Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC 3800, Australia

Redouté, Jean-Michel ; Université de Liège - ULiège > Dép. d'électric., électron. et informat. (Inst.Montefiore) > Systèmes microélectroniques intégrés

Yuce, M. R.; Department of Electrical and Computer Systems Engineering, Monash University, Melbourne, VIC 3800, Australia

Language :

English

Title :

A Wireless Implantable Sensor Design With Subcutaneous Energy Harvesting for Long-Term IoT Healthcare Applications

Publication date :

2018

Journal title :

IEEE Access

ISSN :

2169-3536

Publisher :

Institute of Electrical and Electronics Engineers Inc.

Volume :

Pages :

35801-35808

Peer reviewed :

Peer Reviewed verified by ORBi

Funders :

FT130100430

Available on ORBi :

since 04 February 2019

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