MR素子を用いた電子方位計ウオッチの開発

概要

論文の詳細を見る
We have developed Electronic Compass Watch which senses earth's magnetic field electrically and displays magnetic direction by liquid crystal. In order to realize Electronic Compass sized to wristwatch, miniature, current saving magnetic field sensor using magnetoresistive device and bias field coils are newly designed and analog circuit around this sensor are integrated with microprocessor into CMOS LSI. This Electronic Compass Watch can indicate magnetic direction with the measuring error less than 10 degrees in temperature range from 10 to 40℃. This paper principally describes the construction of this sensor and the peripheral circuit.
社団法人日本時計学会の論文
1994-06-20