Abstract
A wireless intra-oral device has been fabricated to measure the temperature in a mouth. It contains a silicon CMOS chip attached printed circuit board and a button battery. A ring oscillator on the chip generates continuous wave which frequency depends on ambient temperature. The frequency shift is detected by a short wave radio wirelessly at the distance of 30 cm. The circuit draws 51 μfrom a 1.55 V silver-oxide button battery for watches and it gives more than ten days running time.
Original language | English |
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Pages (from-to) | 6-10 |
Number of pages | 5 |
Journal | IEEJ Transactions on Sensors and Micromachines |
Volume | 130 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2010 |
Keywords
- Denture
- Intra-oral temperature
- Non-invasive diagnosis hiroshima university
- Thermometry
- Wireless
ASJC Scopus subject areas
- Mechanical Engineering
- Electrical and Electronic Engineering