Title:
GEOMAGNETIC SENSOR CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/010811
Kind Code:
A1
Abstract:
Provided is a geomagnetic sensor control device, the circuit scale of which can be reduced and with which a highly accurate measured value can be obtained. The geomagnetic sensor control device comprises an analog circuit part (1) for outputting a plurality of magnetic field measurement values corresponding to the sensor output signals of a plurality of magnetic sensors (3, 4, 5) and a digital circuit portion (2) for receiving the three-axis magnetic field measurement values from the analog circuit part (1) and performing digital processing. The analog circuit part (1) performs analog offset correction on the offsets included in the sensor output signals. The digital circuit portion (2) performs digital sensitivity correction on the magnetic field measurement values of the sensor output signals on which the offset correction has been performed.
Inventors:
HIROBE, Kisei (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
廣部 希世 (〒01 東京都大田区雪谷大塚町１番７号 アルプス電気株式会社内 Tokyo, 〒1458501, JP)
廣部 希世 (〒01 東京都大田区雪谷大塚町１番７号 アルプス電気株式会社内 Tokyo, 〒1458501, JP)
Application Number:
JP2009/062407
Publication Date:
January 28, 2010
Filing Date:
July 08, 2009
Export Citation:
Assignee:
ALPS ELECTRIC CO., LTD. (1-7 Yukigaya-otsukamachi, Ota-ku Tokyo, 01, 〒1458501, JP)
アルプス電気株式会社 (〒01 東京都大田区雪谷大塚町１番７号 Tokyo, 〒1458501, JP)
HIROBE, Kisei (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
アルプス電気株式会社 (〒01 東京都大田区雪谷大塚町１番７号 Tokyo, 〒1458501, JP)
HIROBE, Kisei (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
International Classes:
G01C17/28; G01R33/02; G01R33/09
Attorney, Agent or Firm:
AOKI, Hiroyoshi et al. (7F Nibancho Cashew Bldg, 4-3 Niban-cho, Chiyoda-k, Tokyo 84, 〒1020084, JP)