公开(公告)号：US5982176A

公开(公告)日：1999-11-09

申请号：US411939

申请日：1995-03-28

申请人： Yoshihisa Kawamura ,  Kazuo Kurihara ,  Zenkichi Nakamura ,  Kietsu Iwabuchi ,  Toshio Aizawa ,  Hideo Suyama

发明人： Yoshihisa Kawamura ,  Kazuo Kurihara ,  Zenkichi Nakamura ,  Kietsu Iwabuchi ,  Toshio Aizawa ,  Hideo Suyama

IPC分类号： G01C17/30 ,  G01R33/02 ,  G01R33/09 ,  G01R33/06 ,  G01C17/28 ,  G01C17/32

CPC分类号： G01R33/09 ,  G01C17/30 ,  H01J2229/0038

摘要： A geomagnetic direction sensor has a plurality of magnetic cores for converging terrestrial magnetism arranged circumferentially with pre-set gaps, and magneto-resistive effect devices in the gaps so as to lie substantially at right angles to the direction of the magnetic field in the gaps. The geomagnetic direction sensor has at least a pair of magneto-resistive effect devices lying substantially at right angles to each other. The magnetic core is formed of a magnetic material having soft magnetic properties. The current is supplied to the excitation coils placed around the magnetic core for applying a bias magnetic field to the magneto-resistive effect devices. Another set of magneto-resistive effect devices are connected in series with the magneto-resistive effect devices arranged within the gap so as to be substantially parallel to the direction of the magnetic field.

摘要翻译： 地磁方向传感器具有多个磁芯，用于会聚具有预先设定的间隙的周向布置的地磁，以及间隙中的磁阻效应器件，其基本上与间隙中的磁场方向成直角。 地磁方向传感器具有至少一对基本上彼此成直角的磁阻效应装置。 磁芯由具有软磁特性的磁性材料形成。 电流被提供给放置在磁芯周围的激励线圈，用于向磁阻效应器件施加偏置磁场。 另一组磁阻效应器件与布置在间隙内的磁阻效应器件串联连接，以便基本上平行于磁场的方向。