公开(公告)号：US5606255A

公开(公告)日：1997-02-25

申请号：US28965

申请日：1993-03-10

申请人： Nobuyuki Shimbo ,  Junichi Ishiwata ,  Takatoshi Oyama ,  Fumio Ono ,  Michio Ishikawa

发明人： Nobuyuki Shimbo ,  Junichi Ishiwata ,  Takatoshi Oyama ,  Fumio Ono ,  Michio Ishikawa

IPC分类号： G01D5/245 ,  G01D5/14 ,  G01P3/488 ,  G01B7/14 ,  G01R33/06

CPC分类号： G01D5/147

摘要： A Hall effect sensing apparatus for a moving object includes a moving magnetic member having concave and convex segments alternately at is periphery, a detector including a pair of Hall effect elements for converting a magnetic signal to an electric signal, a processing circuit for processing signals from the detector, a magnet for providing magnetic field to the Hall effect elements, and a yoke provided in close proximity to the magnet. The yoke has a smaller surface area than that of the magnet and is movably arranged so as to adjust detecting sensitivity of the sensing apparatus. Therefore, even though there are some variances of magnetic characteristics in the detector, the detecting sensitivity of the sensing apparatus can be adjusted to an optimum level by observing a signal outputted from the processing circuit.

摘要翻译： 一种用于移动物体的霍尔效应感测装置包括：在周边交替地具有凹凸段的移动磁性部件，包括用于将磁信号转换为电信号的一对霍尔效应元件的检测器，用于处理来自 检测器，用于向霍尔效应元件提供磁场的磁体和靠近磁体设置的磁轭。 轭具有比磁体更小的表面积，并且可移动地布置，以便调节检测装置的检测灵敏度。 因此，即使在检测器中存在磁特性的一些变化，也可以通过观察从处理电路输出的信号将感测装置的检测灵敏度调整到最佳水平。