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    • 4. 发明授权
    • Magnetic sensor method and apparatus
    • 磁传感器方法和装置
    • US07898247B2
    • 2011-03-01
    • US12365398
    • 2009-02-04
    • Alan Shane EdelsteinWilliam S. Coblenz
    • Alan Shane EdelsteinWilliam S. Coblenz
    • G01R33/02
    • G01R33/0029G01D1/00G01D15/00G01D21/00
    • A magnetic field sensing device comprising at least one magnetic sensor attached to a base structure, rotating member; and at least one flux concentrator mounted on the rotating member; whereby as the rotating member turns, the at least one flux concentrator shields the magnetic sensor so as to modulate the output of the at least one magnetic sensor. A second embodiment comprises a rotating member that rotates about an axis with at least one flux concentrator positioned thereon having a longitudinal axis in the radial direction of the rotating member; and at least one vector-type magnetic sensor fixedly mounted in the near proximity to the axis of the rotating member such that the magnetic field detected is modulated due to the rotation of the rotating member. Optionally, at least one fixed flux concentrator may be positioned along the periphery of the rotating member so as to increase magnetic flux input.
    • 一种磁场感测装置,包括附接到基座结构,旋转构件的至少一个磁性传感器; 以及安装在所述旋转构件上的至少一个磁通集中器; 由此随着旋转构件转动,至少一个磁通集中器屏蔽磁性传感器,以便调制至少一个磁性传感器的输出。 第二实施例包括旋转构件,该旋转构件围绕轴线旋转,其中至少一个磁通集中器位于其上,具有在旋转构件的径向方向上的纵向轴线; 以及至少一个固定安装在旋转构件的轴线附近的矢量式磁传感器,使得由于旋转构件的旋转而检测到的磁场被调制。 可选地,可以沿着旋转构件的周边定位至少一个固定的磁通集中器,以便增加磁通量输入。