Wireless magnetic sensing system for bioengineering application

S. Hashi, K. Ishiyama

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)


A wireless temperature sensing system for isolated areas such as those in an organism is proposed. The sensor does not need a power supply within it and is only composed of a temperature-sensitive ferrite core, a wound coil and a chip capacitor. Therefore, the sensor is designed as an LC series circuit. The sensor is driven and signals from the sensor are received by using the loop coil with electromagnetic induction. The system can measure the temperature by receiving a field at the resonant frequency corresponding to the temperature of the sensor. As the inductance of the sensor coil changes with the temperature, the resonant frequency is varied. In addition, we proposed magnetic motion-sensing system using same LC resonant sensor. The magnetic signal of the sensor is detected by pick-up coil array. It can be assumed that the flux density from the sensor is a magnetic dipole field. Therefore, the position and orientation of the sensor can be calculated by solving an inverse problem.

Original languageEnglish
Title of host publicationIEEE SENSORS 2012 - Proceedings
Publication statusPublished - 2012
Event11th IEEE SENSORS 2012 Conference - Taipei, Taiwan, Province of China
Duration: 2012 Oct 282012 Oct 31

Publication series

NameProceedings of IEEE Sensors


Conference11th IEEE SENSORS 2012 Conference
Country/TerritoryTaiwan, Province of China


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