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    • 120. 发明授权
    • Electronic compass system
    • 电子罗盘系统
    • US07266452B2
    • 2007-09-04
    • US11557358
    • 2006-11-07
    • Harold C. OckerseJon H. BechtelMark D. Bugno
    • Harold C. OckerseJon H. BechtelMark D. Bugno
    • G01C21/28G01C17/38
    • G01C17/28G01C17/30G01C17/38
    • An electronic compass system includes a magnetic sensor circuit having at least two sensing elements for sensing perpendicular components of the Earth's magnetic field vector. A processing circuit is coupled to the sensor circuit to filter, process, and compute a heading. The processing circuit may determine whether too much noise is present in the output signals received from said magnetic sensor circuit as a function of the relative strength of the Earth's magnetic field vector. The magnetic sensor circuit may include three magnetic field sensing elements contained in a common integrated package having a plurality of leads extending therefrom for mounting to a circuit board. The sensing elements need not be perpendicular to each other or parallel or perpendicular with the circuit board. The electronic compass system is particularly well suited for implementation in a vehicle rearview mirror assembly.
    • 电子罗盘系统包括具有用于感测地球磁场矢量的垂直分量的至少两个感测元件的磁传感器电路。 处理电路耦合到传感器电路以过滤,处理和计算标题。 处理电路可以确定从所述磁传感器电路接收的输出信号中是否存在过多的噪声作为地球磁场矢量的相对强度的函数。 磁传感器电路可以包括三个磁场感测元件,其包含在具有从其延伸的多个引线的公共集成封装中,用于安装到电路板。 感测元件不需要彼此垂直或与电路板平行或垂直。 电子罗盘系统特别适用于车辆后视镜组件中的实施。