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    • 2. 发明申请
    • SPEED AND/OR POSITION INCREMENTAL SENSOR
    • 速度和/或位置增量传感器
    • WO1996008727A1
    • 1996-03-21
    • PCT/FR1995001191
    • 1995-09-15
    • MOVING MAGNET TECHNOLOGIES S.A.
    • MOVING MAGNET TECHNOLOGIES S.A.OUDET, Claude
    • G01P03/487
    • H01L43/065G01B7/003G01D5/147G01P3/488
    • Position and/or speed incremental sensor of the type comprising a movable element (1) of a soft material having at least one tooth movable in a direction OY opposite a permanent magnet (9) magnetized in a direction OZ substantially perpendicular to the OY axis and a probe (10) sensitive to the direction and the intensity of a magnetic field, such as a Hall probe, arranged in the air gap between the magnet (9) and the tooth of the movable element so that its more sensitive axis is substantially directed along the OZ axis. The Hall probe (10) is located in the vicinity of a singular point along the OZ axis, wherein the average value of the magnetic field is low and preferably less than +/- 20mT and is essentially equal to the switching field average value of the integrated circuit associated with the Hall probe.
    • 位置和/或速度递增传感器,其类型包括柔性材料的可移动元件(1),其具有至少一个齿,所述至少一个齿可沿与基本上垂直于所述OY轴线的方向OZ磁化的永磁体(9)相反的方向OY移动;以及 对磁性体(9)和可动元件的齿之间的空气间隙布置的磁场方向和强度(例如霍尔探针)敏感的探针(10),使得其更敏感的轴线基本上被定向 沿OZ轴。 霍尔探测器(10)位于沿着OZ轴的奇异点附近,其中磁场的平均值低,优选小于+/- 20mT,并且基本上等于 与霍尔探头相关的集成电路。