| 摘要 |
PROBLEM TO BE SOLVED: To provide a geomagnetic sensor capable of reducing the influence of abnormal disturbance magnetic field by detecting disturbance magnetic field with high accuracy, and a mobile body display device provided with the geomagnetic sensor. SOLUTION: In this device, when the total magnetic force ¾F¾ of geomagnetism F detected in an optional measuring point is within a substantially ring-like window 110A provided in a predetermined area on an azimuth sphere 100, and a magnetic dipδis also within the window 110A, normal geomagnetism is determined, and in other cases, abnormal geomagnetism is determined, whereby disturbance of geomagnetism by disturbance magnetic field can be detected with high accuracy. By providing such a geomagnetic sensor, a reliable mobile body display device for displaying only accurate information can be provided. COPYRIGHT: (C)2006,JPO&NCIPI |
