公开(公告)号：US06784659B2

公开(公告)日：2004-08-31

申请号：US10011543

申请日：2001-12-05

申请人： Michael J. Haji-Sheikh ,  Mark Plagens ,  Robert Kryzanowski

发明人： Michael J. Haji-Sheikh ,  Mark Plagens ,  Robert Kryzanowski

IPC分类号： G01P354

CPC分类号： G01D5/145 ,  G01D5/2451 ,  G01P3/487

摘要： The ring magnet speed and direction sensing scheme according to the present invention addresses many of the shortcomings of the prior art. In accordance with various aspects of the present invention, a pair of bridges placed on the same semiconductor chip are provided for sensing the passing of north/south transition points on a ring magnet. In accordance with an exemplary embodiment, the bridge contains a first group of runners that are perpendicular to a second group of runners. The bridges are placed to cause the signal from one bridge to slightly follow the signal from the other bridge. Placement of the bridges on the same chip enables highly accurate readings.

摘要翻译： 根据本发明的环形磁体速度和方向感测方案解决了现有技术的许多缺点。 根据本发明的各个方面，设置放置在同一半导体芯片上的一对桥，用于感测环形磁铁上的北/南过渡点的通过。 根据示例性实施例，桥梁包含垂直于第二组跑步者的第一组跑步者。 这些桥被放置成使来自一个桥的信号稍微跟随来自另一个桥的信号。 在同一个芯片上放置桥梁可以实现高精度读数。