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    Ferrous object sensor assembly
    1.
    发明公开
    Ferrous object sensor assembly 无效
    FERROUS对象传感器总成

    公开(公告)号：EP0387781A3

    公开(公告)日：1991-02-06

    申请号：EP90104717.5

    申请日：1990-03-13

    申请人： DURAKOOL INCORPORATED

    发明人： Wolf, Ronald J. ,  Hedeen, Larry

    IPC分类号： G01R33/06

    CPC分类号： G01V3/08

    摘要： A ferrous object sensor assembly (50) in accordance with the invention is capable of sensing the presence or absence of an object of high magnetic permeability, such as a tooth or notch on a rotatably mounted ferrous wheel at zero speed and imme­diately upon power-up and, thus, may be used as a proximity sensor. The ferrous object sensor assembly (50) is comprised of a permanent magnet (34) and a magnetic flux responsive sensor (30) having a sensing plane (32) which produces an electrical output signal varying as a function of the change in magnetic flux density. The ferrous object sensor assembly (50) does not rely upon pole face magnetism as some known conventional sen­sors but, rather, relies upon the radial component of magnetic flux emanating from a lateral surface of the magnet (34) inter­mediate opposing pole faces (P′, P˝). Since the ferrous object sensor assembly (50) does not rely on pole face magnetism, its electrical output signal is relatively stable over a relatively wide temperature range.

    Contactless angular position sensor
    2.
    发明公开
    Contactless angular position sensor 失效
    BerührungsfreierDrehpositionssensor。

    公开(公告)号：EP0575971A1

    公开(公告)日：1993-12-29

    申请号：EP93110001.0

    申请日：1993-06-22

    申请人： DURAKOOL INCORPORATED

    发明人： Wolf, Ronald J. ,  Hedeen, Larry

    IPC分类号： G01D5/14

    CPC分类号： G01D3/02 ,  G01D3/0365 ,  G01D5/145

    摘要： An angular position sensor (20, 20', 200) for sensing the angular position of a pivotally mounted device (28) includes a magnetically sensitive device (24, 210), such as a Hall effect IC, and a plurality of flux concentrators (44, 46, 206), rigidly disposed relative to the Hall effect IC (24, 210), forming an assembly. The assembly is disposed in a housing (22, 221) a fixed distance from a rotatably mounted standard magnet (42, 202) defining a fixed air gap therebetween. The magnet (42, 202) is disposed in rotatably mounted magnet holder which also acts as a drive arm (24, 210) that is adapted to be mechanically coupled to a pivotally mounted device (28). The configuration of the flux concentrators (44, 46, 206) assembled to the magnetically sensitive device (24, 210) cause the output of the Hall effect IC (24, 210) to be generally linear. In order to avoid problems associated with electrically adjustable angular position sensors, the angular position sensor (20, 20', 200) in accordance with the present invention is adjusted mechanically. In particular, a flux concentrator (48, 208), preferably having a halo shape, is disposed adjacent the magnet (42, 202). The sensor (20, 20', 200) is calibrated by varying the distance between the halo-shaped flux concentrator (48, 208) and the magnet. In one embodiment of the invention, the halo-shaped flux concentrator (48, 208) is formed to provide temperature compensation for the sensor. The sensor (20, 20') is hermetically sealed and is thus unaffected by wear or vibration. In an alternative embodiment, a circular magnet (202) with a central aperture (216) is utilized. In order to reduce the overall length of the sensor, the magnetic sensing element (218) is disposed within the central aperture (216).

    摘要翻译： 用于检测枢转安装的装置（28）的角位置的角位置传感器（20,20'，200）包括诸如霍尔效应IC的磁敏装置（24,210）和多个磁通集中器 44,46,206），其相对于霍尔效应IC（24,210）刚性设置，形成组件。 组件设置在与可旋转地安装的标准磁体（42,202）固定距离的壳体（22,221）中，该标准磁体限定了它们之间的固定气隙。 磁体（42,202）设置在可旋转地安装的磁体保持器中，该磁体保持器还用作适于机械地联接到枢转安装的装置（28）的驱动臂（24,210）。 组装到磁敏装置（24,210）上的通量集中器（44,46,206）的结构使霍尔效应IC（24,210）的输出大致线性。 为了避免与电动可调角度位置传感器相关的问题，根据本发明的角度位置传感器（20,20'，200）被机械地调节。 特别地，优选地具有卤素形状的通量聚集器（48,208）被布置在磁体（42,202）附近。 传感器（20,20'，200）通过改变卤素状集中器（48,208）和磁体之间的距离来校准。 在本发明的一个实施例中，形成了卤素状磁通集中器（48,208），以为传感器提供温度补偿。 传感器（20,20'）被密封，因此不受磨损或振动的影响。 在替代实施例中，使用具有中心孔（216）的圆形磁体（202）。 为了减小传感器的总长度，磁感应元件（218）设置在中心孔（216）内。

    Ferrous object sensor assembly
    3.
    发明公开
    Ferrous object sensor assembly 无效
    Eiserne Objekte detektierende Anordnung。

    公开(公告)号：EP0387781A2

    公开(公告)日：1990-09-19

    申请号：EP90104717.5

    申请日：1990-03-13

    申请人： DURAKOOL INCORPORATED

    发明人： Wolf, Ronald J. ,  Hedeen, Larry

    IPC分类号： G01R33/06

    CPC分类号： G01V3/08

    摘要： A ferrous object sensor assembly (50) in accordance with the invention is capable of sensing the presence or absence of an object of high magnetic permeability, such as a tooth or notch on a rotatably mounted ferrous wheel at zero speed and imme­diately upon power-up and, thus, may be used as a proximity sensor. The ferrous object sensor assembly (50) is comprised of a permanent magnet (34) and a magnetic flux responsive sensor (30) having a sensing plane (32) which produces an electrical output signal varying as a function of the change in magnetic flux density. The ferrous object sensor assembly (50) does not rely upon pole face magnetism as some known conventional sen­sors but, rather, relies upon the radial component of magnetic flux emanating from a lateral surface of the magnet (34) inter­mediate opposing pole faces (P′, P˝). Since the ferrous object sensor assembly (50) does not rely on pole face magnetism, its electrical output signal is relatively stable over a relatively wide temperature range.

    摘要翻译： 根据本发明的黑色物体传感器组件（50）能够以零速度感测高可磁性物体的存在或不存在，例如在可旋转地安装的铁轮上的齿或凹口，并且在加电 因此，可以用作接近传感器。 有色金属物体传感器组件（50）由具有感测平面（32）的永磁体（34）和磁通响应传感器（30）组成，该传感平面（32）产生作为磁通密度变化的函数而变化的电输出信号 。 有色金属物体传感器组件（50）不依赖于磁极表面磁性作为一些已知的常规传感器，而是依赖于从相对磁极面（P min）之间的磁体（34）的侧表面发出的磁通量的径向分量 ，P秒）。 由于黑色物体传感器组件（50）不依赖于极面磁性，其电输出信号在较宽的温度范围内相对稳定。