Title:
センサ・モジュール、補正方法、プログラム及び記録媒体
Document Type and Number:
Japanese Patent JP4915996
Kind Code:
B2
Abstract:
A sensor module maintaining high detection accuracy. Correction data of a detected magnetic field is updated only in a case that a fluctuation band acquired from an output signal of an acceleration sensor is less than a threshold value and a difference between an azimuth angle acquired from an output signal of a terrestrial magnetism sensor and an inclination angle acquired from an output signal of acceleration sensor is less than the threshold value. Therefore, the correction data is updated only in a case that a magnetic field at a position of a mobile object is stably detected, and an accuracy of the correction data can be maintained.
Inventors:
High
Fuse Akihiro
Fuse Akihiro
Application Number:
JP2006274614A
Publication Date:
April 11, 2012
Filing Date:
October 06, 2006
Export Citation:
Assignee:
株式会社リコー
International Classes:
G01C17/38
Domestic Patent References:
| JP5071964A | ||||
| JP2002196055A | ||||
| JP2002207071A | ||||
| JP2005291728A | ||||
| JP9081308A |
Foreign References:
| WO1999050619A1 | ||||
| WO2003100449A1 | ||||
| WO2006035505A1 |
Attorney, Agent or Firm:
Atsushi Tateishi