公开(公告)号：US20110285395A1

公开(公告)日：2011-11-24

申请号：US12949841

申请日：2010-11-19

申请人： Robert Hendrikus Margaretha van Veldhoven ,  Andreas Bernardus Maria Jansman ,  Jaap Ruigrok

发明人： Robert Hendrikus Margaretha van Veldhoven ,  Andreas Bernardus Maria Jansman ,  Jaap Ruigrok

IPC分类号： G01R33/09

CPC分类号： G01R33/09 ,  G01R33/096

摘要： An AMR sensor, comprises at least first and second AMR sensor elements to which opposite bias fields are applied. The first and second AMR sensor element outputs are combined to derive a sensor response which is substantially anti-symmetric in the region close to zero external magnetic field. This arrangement shifts the zero detection point of the AMR sensor elements away from a maximum of the response curve, so that sensitivity in proximity to a zero input field is obtained. To overcome the problem that the response is not anti-symmetric, the signals from (at least) two sensor elements are combined.

摘要翻译： AMR传感器包括至少第一和第二AMR传感器元件，相应的偏置场被施加到该传感器元件。 组合第一和第二AMR传感器元件输出以导出在接近零的外部磁场的区域中基本上反对称的传感器响应。 该布置使得AMR传感器元件的零点检测点远离响应曲线的最大值，从而获得接近零输入场的灵敏度。 为了克服响应不是反对称的问题，来自（至少）两个传感器元件的信号被组合。