Development of basic system of ingestible core body thermometer with small size and low energy consumption powered by gastric acid battery

Shinya Yoshida, Hiroshi Miyaguchi, Tsutomu Nakamura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In this study, we have developed a basic system of an ingestible core body thermometer powered by a gastric acid battery. A custom integrated circuit (IC) with voltage boosting, coding, modulating and transmitting functions was prototyped. A small gastric acid battery based on a pair of Mg and Pt thin-film electrodes was also fabricated by microfabrication technology. Charge storage in a storage capacitor was succeeded with the battery and IC at the boosted voltage of about 3 V. Then, an evaluation board of this system was prepared. The footprint for mounting the essential electrical components was reasonably small, which suggested the possibility to miniaturize this system to a tablet size. Magnetic-field coupling telecommunication of measured temperature data between a small transmission coil and a loop antenna as a receiver was successfully demonstrated. The power consumption for one time temperature measurement and telecommunication measured 10∼30 pJ. These results proved the feasibility of the ingestible thermometer system.

Original languageEnglish
Title of host publicationIEEE SENSORS 2017 - Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-3
Number of pages3
ISBN (Electronic)9781509010127
DOIs
Publication statusPublished - 2017 Dec 21
Event16th IEEE SENSORS Conference, ICSENS 2017 - Glasgow, United Kingdom
Duration: 2017 Oct 302017 Nov 1

Publication series

NameProceedings of IEEE Sensors
Volume2017-December
ISSN (Print)1930-0395
ISSN (Electronic)2168-9229

Other

Other16th IEEE SENSORS Conference, ICSENS 2017
CountryUnited Kingdom
CityGlasgow
Period17/10/3017/11/1

Keywords

  • core body temperature
  • gastric acid battery
  • ingestible sensor

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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