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A wireless implantable sensor network system for in vivo monitoring of physiological signals.

Authors
Type
Published Article
Journal
IEEE Transactions on Information Technology in Biomedicine
1558-0032
Publisher
Institute of Electrical and Electronics Engineers
Publication Date
Volume
15
Issue
4
Pages
577–584
Identifiers
DOI: 10.1109/TITB.2011.2149536
PMID: 21536536
Source
Medline
License
Unknown

Abstract

A wireless implantable sensor network system (WISNS) is designed for in vivo monitoring physiological signals of a population of animals. WISNS can simultaneously monitor more than 15 animals, communicating three kinds of analog information among sensor nodes. Analog signals are transmitted to relay node at 800-KHz carrier by AM. Relay nodes digitalize and package them into messages, and then forward to the Wireless sensor network by Nordic RF technology (NWSN). Smaller overall dimensions (<2 cm (3)), lower power regulation, and dedicated packaging make the system suitable and compatible for implantable devices. The implantable sensor node, protocol stack of NWSN, and performance of the system are evaluated and optimized with ECG monitoring test of rats. Compared with those commercially available sensor nodes, our implantable one is leading in the weight and volume miniaturization, and our WISNS solution shows huge potential in achieving the compatibility of different animals.

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